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Merge pull request #369 from jbenet/utp

Browse Source 
Add utp as a transport
This commit is contained in:
Juan Batiz-Benet
2014-11-20 18:39:18 -08:00
parent 6adfa35c3e c3fd9b5b20
commit 8bf7948722
74 changed files with 3527 additions and 2185 deletions
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3
Dockerfile
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@ -4,7 +4,7 @@ MAINTAINER Brian Tiger Chow <btc@perfmode.com>
COPY . /go/src/github.com/jbenet/go-ipfs
RUN cd /go/src/github.com/jbenet/go-ipfs/cmd/ipfs && go install
EXPOSE 4001 5001
EXPOSE 4001 5001 4002/udp
ENTRYPOINT ["ipfs"]
@ -12,3 +12,4 @@ CMD ["daemon", "--init"]
# build: docker build -t go-ipfs .
# run: docker run -p 4001:4001 -p 5001:5001 go-ipfs:latest daemon --init
# run: docker run -p 4002:4002/udp -p 4001:4001 -p 5001:5001 go-ipfs:latest daemon --init

22
Godeps/Godeps.json generated
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@ -1,6 +1,6 @@
{
"ImportPath": "github.com/jbenet/go-ipfs",
"GoVersion": "go1.3.3",
"GoVersion": "go1.3",
"Packages": [
"./..."
],
@ -73,10 +73,6 @@
"ImportPath": "github.com/facebookgo/stackerr",
"Rev": "060fbf9364c89acd41bf710e9e92915a90e7a5b5"
},
{
"ImportPath": "github.com/gonuts/flag",
"Rev": "741a6cbd37a30dedc93f817e7de6aaf0ca38a493"
},
{
"ImportPath": "github.com/gorilla/context",
"Rev": "14f550f51af52180c2eefed15e5fd18d63c0a64a"
@ -86,12 +82,12 @@
"Rev": "4b8fbc56f3b2400a7c7ea3dba9b3539787c486b6"
},
{
"ImportPath": "github.com/inconshreveable/go-update",
"Rev": "221d034a558b4c21b0624b2a450c076913854a57"
"ImportPath": "github.com/h2so5/utp",
"Rev": "654d875bb65e96729678180215cf080fe2810371"
},
{
"ImportPath": "github.com/jbenet/commander",
"Rev": "e0cf317891f0ab6f1ac64dfcb754b4fb5e69f7df"
"ImportPath": "github.com/inconshreveable/go-update",
"Rev": "221d034a558b4c21b0624b2a450c076913854a57"
},
{
"ImportPath": "github.com/jbenet/go-base58",
@ -115,8 +111,12 @@
},
{
"ImportPath": "github.com/jbenet/go-multiaddr",
"Comment": "0.1.2-27-g62a88e0",
"Rev": "62a88e015e1bf5d6aaca29aec1aba0722f21c8d3"
"Comment": "0.1.2-30-g99cf3ed",
"Rev": "99cf3edc711751cf7b43505fac0e3913f6b9a75c"
},
{
"ImportPath": "github.com/jbenet/go-multiaddr-net",
"Rev": "b6265d8119558acf3912db44abb34d97c30c3220"
},
{
"ImportPath": "github.com/jbenet/go-multihash",

27
Godeps/_workspace/src/github.com/gonuts/flag/LICENSE generated vendored
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@ -1,27 +0,0 @@
Copyright (c) 2012 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

6
Godeps/_workspace/src/github.com/gonuts/flag/README.md generated vendored
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@ -1,6 +0,0 @@
flag
=======
[![Build Status](https://drone.io/github.com/gonuts/flag/status.png)](https://drone.io/github.com/gonuts/flag/latest)
A fork of the official "flag" package but with the flag.Value interface extended to provide a ``Get() interface{}`` method.

83
Godeps/_workspace/src/github.com/gonuts/flag/example_test.go generated vendored
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@ -1,83 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// These examples demonstrate more intricate uses of the flag package.
package flag_test
import (
"errors"
"flag"
"fmt"
"strings"
"time"
)
// Example 1: A single string flag called "species" with default value "gopher".
var species = flag.String("species", "gopher", "the species we are studying")
// Example 2: Two flags sharing a variable, so we can have a shorthand.
// The order of initialization is undefined, so make sure both use the
// same default value. They must be set up with an init function.
var gopherType string
func init() {
const (
defaultGopher = "pocket"
usage = "the variety of gopher"
)
flag.StringVar(&gopherType, "gopher_type", defaultGopher, usage)
flag.StringVar(&gopherType, "g", defaultGopher, usage+" (shorthand)")
}
// Example 3: A user-defined flag type, a slice of durations.
type interval []time.Duration
// String is the method to format the flag's value, part of the flag.Value interface.
// The String method's output will be used in diagnostics.
func (i *interval) String() string {
return fmt.Sprint(*i)
}
// Set is the method to set the flag value, part of the flag.Value interface.
// Set's argument is a string to be parsed to set the flag.
// It's a comma-separated list, so we split it.
func (i *interval) Set(value string) error {
// If we wanted to allow the flag to be set multiple times,
// accumulating values, we would delete this if statement.
// That would permit usages such as
// -deltaT 10s -deltaT 15s
// and other combinations.
if len(*i) > 0 {
return errors.New("interval flag already set")
}
for _, dt := range strings.Split(value, ",") {
duration, err := time.ParseDuration(dt)
if err != nil {
return err
}
*i = append(*i, duration)
}
return nil
}
// Define a flag to accumulate durations. Because it has a special type,
// we need to use the Var function and therefore create the flag during
// init.
var intervalFlag interval
func init() {
// Tie the command-line flag to the intervalFlag variable and
// set a usage message.
flag.Var(&intervalFlag, "deltaT", "comma-separated list of intervals to use between events")
}
func Example() {
// All the interesting pieces are with the variables declared above, but
// to enable the flag package to see the flags defined there, one must
// execute, typically at the start of main (not init!):
// flag.Parse()
// We don't run it here because this is not a main function and
// the testing suite has already parsed the flags.
}

22
Godeps/_workspace/src/github.com/gonuts/flag/export_test.go generated vendored
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@ -1,22 +0,0 @@
// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package flag
import "os"
// Additional routines compiled into the package only during testing.
// ResetForTesting clears all flag state and sets the usage function as directed.
// After calling ResetForTesting, parse errors in flag handling will not
// exit the program.
func ResetForTesting(usage func()) {
commandLine = NewFlagSet(os.Args[0], ContinueOnError)
Usage = usage
}
// CommandLine returns the default FlagSet.
func CommandLine() *FlagSet {
return commandLine
}

816
Godeps/_workspace/src/github.com/gonuts/flag/flag.go generated vendored
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@ -1,816 +0,0 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
/*
Package flag implements command-line flag parsing.
Usage:
Define flags using flag.String(), Bool(), Int(), etc.
This declares an integer flag, -flagname, stored in the pointer ip, with type *int.
import "flag"
var ip = flag.Int("flagname", 1234, "help message for flagname")
If you like, you can bind the flag to a variable using the Var() functions.
var flagvar int
func init() {
flag.IntVar(&flagvar, "flagname", 1234, "help message for flagname")
}
Or you can create custom flags that satisfy the Value interface (with
pointer receivers) and couple them to flag parsing by
flag.Var(&flagVal, "name", "help message for flagname")
For such flags, the default value is just the initial value of the variable.
After all flags are defined, call
flag.Parse()
to parse the command line into the defined flags.
Flags may then be used directly. If you're using the flags themselves,
they are all pointers; if you bind to variables, they're values.
fmt.Println("ip has value ", *ip)
fmt.Println("flagvar has value ", flagvar)
After parsing, the arguments after the flag are available as the
slice flag.Args() or individually as flag.Arg(i).
The arguments are indexed from 0 up to flag.NArg().
Command line flag syntax:
-flag
-flag=x
-flag x // non-boolean flags only
One or two minus signs may be used; they are equivalent.
The last form is not permitted for boolean flags because the
meaning of the command
cmd -x *
will change if there is a file called 0, false, etc. You must
use the -flag=false form to turn off a boolean flag.
Flag parsing stops just before the first non-flag argument
("-" is a non-flag argument) or after the terminator "--".
Integer flags accept 1234, 0664, 0x1234 and may be negative.
Boolean flags may be 1, 0, t, f, true, false, TRUE, FALSE, True, False.
Duration flags accept any input valid for time.ParseDuration.
The default set of command-line flags is controlled by
top-level functions. The FlagSet type allows one to define
independent sets of flags, such as to implement subcommands
in a command-line interface. The methods of FlagSet are
analogous to the top-level functions for the command-line
flag set.
*/
package flag
import (
"errors"
"fmt"
"io"
"os"
"sort"
"strconv"
"time"
)
// ErrHelp is the error returned if the flag -help is invoked but no such flag is defined.
var ErrHelp = errors.New("flag: help requested")
// -- bool Value
type boolValue bool
func newBoolValue(val bool, p *bool) *boolValue {
*p = val
return (*boolValue)(p)
}
func (b *boolValue) Set(s string) error {
v, err := strconv.ParseBool(s)
*b = boolValue(v)
return err
}
func (b *boolValue) Get() interface{} { return bool(*b) }
func (b *boolValue) String() string { return fmt.Sprintf("%v", *b) }
// -- int Value
type intValue int
func newIntValue(val int, p *int) *intValue {
*p = val
return (*intValue)(p)
}
func (i *intValue) Set(s string) error {
v, err := strconv.ParseInt(s, 0, 64)
*i = intValue(v)
return err
}
func (i *intValue) Get() interface{} { return int(*i) }
func (i *intValue) String() string { return fmt.Sprintf("%v", *i) }
// -- int64 Value
type int64Value int64
func newInt64Value(val int64, p *int64) *int64Value {
*p = val
return (*int64Value)(p)
}
func (i *int64Value) Set(s string) error {
v, err := strconv.ParseInt(s, 0, 64)
*i = int64Value(v)
return err
}
func (i *int64Value) Get() interface{} { return int64(*i) }
func (i *int64Value) String() string { return fmt.Sprintf("%v", *i) }
// -- uint Value
type uintValue uint
func newUintValue(val uint, p *uint) *uintValue {
*p = val
return (*uintValue)(p)
}
func (i *uintValue) Set(s string) error {
v, err := strconv.ParseUint(s, 0, 64)
*i = uintValue(v)
return err
}
func (i *uintValue) Get() interface{} { return uint(*i) }
func (i *uintValue) String() string { return fmt.Sprintf("%v", *i) }
// -- uint64 Value
type uint64Value uint64
func newUint64Value(val uint64, p *uint64) *uint64Value {
*p = val
return (*uint64Value)(p)
}
func (i *uint64Value) Set(s string) error {
v, err := strconv.ParseUint(s, 0, 64)
*i = uint64Value(v)
return err
}
func (i *uint64Value) Get() interface{} { return uint64(*i) }
func (i *uint64Value) String() string { return fmt.Sprintf("%v", *i) }
// -- string Value
type stringValue string
func newStringValue(val string, p *string) *stringValue {
*p = val
return (*stringValue)(p)
}
func (s *stringValue) Set(val string) error {
*s = stringValue(val)
return nil
}
func (s *stringValue) Get() interface{} { return s.String() }
func (s *stringValue) String() string { return fmt.Sprintf("%s", *s) }
// -- float64 Value
type float64Value float64
func newFloat64Value(val float64, p *float64) *float64Value {
*p = val
return (*float64Value)(p)
}
func (f *float64Value) Set(s string) error {
v, err := strconv.ParseFloat(s, 64)
*f = float64Value(v)
return err
}
func (f *float64Value) Get() interface{} { return float64(*f) }
func (f *float64Value) String() string { return fmt.Sprintf("%v", *f) }
// -- time.Duration Value
type durationValue time.Duration
func newDurationValue(val time.Duration, p *time.Duration) *durationValue {
*p = val
return (*durationValue)(p)
}
func (d *durationValue) Set(s string) error {
v, err := time.ParseDuration(s)
*d = durationValue(v)
return err
}
func (d *durationValue) Get() interface{} { return *(*time.Duration)(d) }
func (d *durationValue) String() string { return (*time.Duration)(d).String() }
// Value is the interface to the dynamic value stored in a flag.
// (The default value is represented as a string.)
type Value interface {
String() string
Set(string) error
Get() interface{}
}
// ErrorHandling defines how to handle flag parsing errors.
type ErrorHandling int
const (
ContinueOnError ErrorHandling = iota
ExitOnError
PanicOnError
)
// A FlagSet represents a set of defined flags.
type FlagSet struct {
// Usage is the function called when an error occurs while parsing flags.
// The field is a function (not a method) that may be changed to point to
// a custom error handler.
Usage func()
name string
parsed bool
actual map[string]*Flag
formal map[string]*Flag
args []string // arguments after flags
exitOnError bool // does the program exit if there's an error?
errorHandling ErrorHandling
output io.Writer // nil means stderr; use out() accessor
}
// A Flag represents the state of a flag.
type Flag struct {
Name string // name as it appears on command line
Usage string // help message
Value Value // value as set
DefValue string // default value (as text); for usage message
}
// sortFlags returns the flags as a slice in lexicographical sorted order.
func sortFlags(flags map[string]*Flag) []*Flag {
list := make(sort.StringSlice, len(flags))
i := 0
for _, f := range flags {
list[i] = f.Name
i++
}
list.Sort()
result := make([]*Flag, len(list))
for i, name := range list {
result[i] = flags[name]
}
return result
}
func (f *FlagSet) out() io.Writer {
if f.output == nil {
return os.Stderr
}
return f.output
}
// SetOutput sets the destination for usage and error messages.
// If output is nil, os.Stderr is used.
func (f *FlagSet) SetOutput(output io.Writer) {
f.output = output
}
// VisitAll visits the flags in lexicographical order, calling fn for each.
// It visits all flags, even those not set.
func (f *FlagSet) VisitAll(fn func(*Flag)) {
for _, flag := range sortFlags(f.formal) {
fn(flag)
}
}
// VisitAll visits the command-line flags in lexicographical order, calling
// fn for each. It visits all flags, even those not set.
func VisitAll(fn func(*Flag)) {
commandLine.VisitAll(fn)
}
// Visit visits the flags in lexicographical order, calling fn for each.
// It visits only those flags that have been set.
func (f *FlagSet) Visit(fn func(*Flag)) {
for _, flag := range sortFlags(f.actual) {
fn(flag)
}
}
// Visit visits the command-line flags in lexicographical order, calling fn
// for each. It visits only those flags that have been set.
func Visit(fn func(*Flag)) {
commandLine.Visit(fn)
}
// Lookup returns the Flag structure of the named flag, returning nil if none exists.
func (f *FlagSet) Lookup(name string) *Flag {
return f.formal[name]
}
// Lookup returns the Flag structure of the named command-line flag,
// returning nil if none exists.
func Lookup(name string) *Flag {
return commandLine.formal[name]
}
// Set sets the value of the named flag.
func (f *FlagSet) Set(name, value string) error {
flag, ok := f.formal[name]
if !ok {
return fmt.Errorf("no such flag -%v", name)
}
err := flag.Value.Set(value)
if err != nil {
return err
}
if f.actual == nil {
f.actual = make(map[string]*Flag)
}
f.actual[name] = flag
return nil
}
// Set sets the value of the named command-line flag.
func Set(name, value string) error {
return commandLine.Set(name, value)
}
// PrintDefaults prints, to standard error unless configured
// otherwise, the default values of all defined flags in the set.
func (f *FlagSet) PrintDefaults() {
f.VisitAll(func(flag *Flag) {
format := " -%s=%s: %s\n"
if _, ok := flag.Value.(*stringValue); ok {
// put quotes on the value
format = " -%s=%q: %s\n"
}
fmt.Fprintf(f.out(), format, flag.Name, flag.DefValue, flag.Usage)
})
}
// PrintDefaults prints to standard error the default values of all defined command-line flags.
func PrintDefaults() {
commandLine.PrintDefaults()
}
// defaultUsage is the default function to print a usage message.
func defaultUsage(f *FlagSet) {
fmt.Fprintf(f.out(), "Usage of %s:\n", f.name)
f.PrintDefaults()
}
// NOTE: Usage is not just defaultUsage(commandLine)
// because it serves (via godoc flag Usage) as the example
// for how to write your own usage function.
// Usage prints to standard error a usage message documenting all defined command-line flags.
// The function is a variable that may be changed to point to a custom function.
var Usage = func() {
fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
PrintDefaults()
}
// NFlag returns the number of flags that have been set.
func (f *FlagSet) NFlag() int { return len(f.actual) }
// NFlag returns the number of command-line flags that have been set.
func NFlag() int { return len(commandLine.actual) }
// Arg returns the i'th argument. Arg(0) is the first remaining argument
// after flags have been processed.
func (f *FlagSet) Arg(i int) string {
if i < 0 || i >= len(f.args) {
return ""
}
return f.args[i]
}
// Arg returns the i'th command-line argument. Arg(0) is the first remaining argument
// after flags have been processed.
func Arg(i int) string {
return commandLine.Arg(i)
}
// NArg is the number of arguments remaining after flags have been processed.
func (f *FlagSet) NArg() int { return len(f.args) }
// NArg is the number of arguments remaining after flags have been processed.
func NArg() int { return len(commandLine.args) }
// Args returns the non-flag arguments.
func (f *FlagSet) Args() []string { return f.args }
// Args returns the non-flag command-line arguments.
func Args() []string { return commandLine.args }
// BoolVar defines a bool flag with specified name, default value, and usage string.
// The argument p points to a bool variable in which to store the value of the flag.
func (f *FlagSet) BoolVar(p *bool, name string, value bool, usage string) {
f.Var(newBoolValue(value, p), name, usage)
}
// BoolVar defines a bool flag with specified name, default value, and usage string.
// The argument p points to a bool variable in which to store the value of the flag.
func BoolVar(p *bool, name string, value bool, usage string) {
commandLine.Var(newBoolValue(value, p), name, usage)
}
// Bool defines a bool flag with specified name, default value, and usage string.
// The return value is the address of a bool variable that stores the value of the flag.
func (f *FlagSet) Bool(name string, value bool, usage string) *bool {
p := new(bool)
f.BoolVar(p, name, value, usage)
return p
}
// Bool defines a bool flag with specified name, default value, and usage string.
// The return value is the address of a bool variable that stores the value of the flag.
func Bool(name string, value bool, usage string) *bool {
return commandLine.Bool(name, value, usage)
}
// IntVar defines an int flag with specified name, default value, and usage string.
// The argument p points to an int variable in which to store the value of the flag.
func (f *FlagSet) IntVar(p *int, name string, value int, usage string) {
f.Var(newIntValue(value, p), name, usage)
}
// IntVar defines an int flag with specified name, default value, and usage string.
// The argument p points to an int variable in which to store the value of the flag.
func IntVar(p *int, name string, value int, usage string) {
commandLine.Var(newIntValue(value, p), name, usage)
}
// Int defines an int flag with specified name, default value, and usage string.
// The return value is the address of an int variable that stores the value of the flag.
func (f *FlagSet) Int(name string, value int, usage string) *int {
p := new(int)
f.IntVar(p, name, value, usage)
return p
}
// Int defines an int flag with specified name, default value, and usage string.
// The return value is the address of an int variable that stores the value of the flag.
func Int(name string, value int, usage string) *int {
return commandLine.Int(name, value, usage)
}
// Int64Var defines an int64 flag with specified name, default value, and usage string.
// The argument p points to an int64 variable in which to store the value of the flag.
func (f *FlagSet) Int64Var(p *int64, name string, value int64, usage string) {
f.Var(newInt64Value(value, p), name, usage)
}
// Int64Var defines an int64 flag with specified name, default value, and usage string.
// The argument p points to an int64 variable in which to store the value of the flag.
func Int64Var(p *int64, name string, value int64, usage string) {
commandLine.Var(newInt64Value(value, p), name, usage)
}
// Int64 defines an int64 flag with specified name, default value, and usage string.
// The return value is the address of an int64 variable that stores the value of the flag.
func (f *FlagSet) Int64(name string, value int64, usage string) *int64 {
p := new(int64)
f.Int64Var(p, name, value, usage)
return p
}
// Int64 defines an int64 flag with specified name, default value, and usage string.
// The return value is the address of an int64 variable that stores the value of the flag.
func Int64(name string, value int64, usage string) *int64 {
return commandLine.Int64(name, value, usage)
}
// UintVar defines a uint flag with specified name, default value, and usage string.
// The argument p points to a uint variable in which to store the value of the flag.
func (f *FlagSet) UintVar(p *uint, name string, value uint, usage string) {
f.Var(newUintValue(value, p), name, usage)
}
// UintVar defines a uint flag with specified name, default value, and usage string.
// The argument p points to a uint variable in which to store the value of the flag.
func UintVar(p *uint, name string, value uint, usage string) {
commandLine.Var(newUintValue(value, p), name, usage)
}
// Uint defines a uint flag with specified name, default value, and usage string.
// The return value is the address of a uint variable that stores the value of the flag.
func (f *FlagSet) Uint(name string, value uint, usage string) *uint {
p := new(uint)
f.UintVar(p, name, value, usage)
return p
}
// Uint defines a uint flag with specified name, default value, and usage string.
// The return value is the address of a uint variable that stores the value of the flag.
func Uint(name string, value uint, usage string) *uint {
return commandLine.Uint(name, value, usage)
}
// Uint64Var defines a uint64 flag with specified name, default value, and usage string.
// The argument p points to a uint64 variable in which to store the value of the flag.
func (f *FlagSet) Uint64Var(p *uint64, name string, value uint64, usage string) {
f.Var(newUint64Value(value, p), name, usage)
}
// Uint64Var defines a uint64 flag with specified name, default value, and usage string.
// The argument p points to a uint64 variable in which to store the value of the flag.
func Uint64Var(p *uint64, name string, value uint64, usage string) {
commandLine.Var(newUint64Value(value, p), name, usage)
}
// Uint64 defines a uint64 flag with specified name, default value, and usage string.
// The return value is the address of a uint64 variable that stores the value of the flag.
func (f *FlagSet) Uint64(name string, value uint64, usage string) *uint64 {
p := new(uint64)
f.Uint64Var(p, name, value, usage)
return p
}
// Uint64 defines a uint64 flag with specified name, default value, and usage string.
// The return value is the address of a uint64 variable that stores the value of the flag.
func Uint64(name string, value uint64, usage string) *uint64 {
return commandLine.Uint64(name, value, usage)
}
// StringVar defines a string flag with specified name, default value, and usage string.
// The argument p points to a string variable in which to store the value of the flag.
func (f *FlagSet) StringVar(p *string, name string, value string, usage string) {
f.Var(newStringValue(value, p), name, usage)
}
// StringVar defines a string flag with specified name, default value, and usage string.
// The argument p points to a string variable in which to store the value of the flag.
func StringVar(p *string, name string, value string, usage string) {
commandLine.Var(newStringValue(value, p), name, usage)
}
// String defines a string flag with specified name, default value, and usage string.
// The return value is the address of a string variable that stores the value of the flag.
func (f *FlagSet) String(name string, value string, usage string) *string {
p := new(string)
f.StringVar(p, name, value, usage)
return p
}
// String defines a string flag with specified name, default value, and usage string.
// The return value is the address of a string variable that stores the value of the flag.
func String(name string, value string, usage string) *string {
return commandLine.String(name, value, usage)
}
// Float64Var defines a float64 flag with specified name, default value, and usage string.
// The argument p points to a float64 variable in which to store the value of the flag.
func (f *FlagSet) Float64Var(p *float64, name string, value float64, usage string) {
f.Var(newFloat64Value(value, p), name, usage)
}
// Float64Var defines a float64 flag with specified name, default value, and usage string.
// The argument p points to a float64 variable in which to store the value of the flag.
func Float64Var(p *float64, name string, value float64, usage string) {
commandLine.Var(newFloat64Value(value, p), name, usage)
}
// Float64 defines a float64 flag with specified name, default value, and usage string.
// The return value is the address of a float64 variable that stores the value of the flag.
func (f *FlagSet) Float64(name string, value float64, usage string) *float64 {
p := new(float64)
f.Float64Var(p, name, value, usage)
return p
}
// Float64 defines a float64 flag with specified name, default value, and usage string.
// The return value is the address of a float64 variable that stores the value of the flag.
func Float64(name string, value float64, usage string) *float64 {
return commandLine.Float64(name, value, usage)
}
// DurationVar defines a time.Duration flag with specified name, default value, and usage string.
// The argument p points to a time.Duration variable in which to store the value of the flag.
func (f *FlagSet) DurationVar(p *time.Duration, name string, value time.Duration, usage string) {
f.Var(newDurationValue(value, p), name, usage)
}
// DurationVar defines a time.Duration flag with specified name, default value, and usage string.
// The argument p points to a time.Duration variable in which to store the value of the flag.
func DurationVar(p *time.Duration, name string, value time.Duration, usage string) {
commandLine.Var(newDurationValue(value, p), name, usage)
}
// Duration defines a time.Duration flag with specified name, default value, and usage string.
// The return value is the address of a time.Duration variable that stores the value of the flag.
func (f *FlagSet) Duration(name string, value time.Duration, usage string) *time.Duration {
p := new(time.Duration)
f.DurationVar(p, name, value, usage)
return p
}
// Duration defines a time.Duration flag with specified name, default value, and usage string.
// The return value is the address of a time.Duration variable that stores the value of the flag.
func Duration(name string, value time.Duration, usage string) *time.Duration {
return commandLine.Duration(name, value, usage)
}
// Var defines a flag with the specified name and usage string. The type and
// value of the flag are represented by the first argument, of type Value, which
// typically holds a user-defined implementation of Value. For instance, the
// caller could create a flag that turns a comma-separated string into a slice
// of strings by giving the slice the methods of Value; in particular, Set would
// decompose the comma-separated string into the slice.
func (f *FlagSet) Var(value Value, name string, usage string) {
// Remember the default value as a string; it won't change.
flag := &Flag{name, usage, value, value.String()}
_, alreadythere := f.formal[name]
if alreadythere {
msg := fmt.Sprintf("%s flag redefined: %s", f.name, name)
fmt.Fprintln(f.out(), msg)
panic(msg) // Happens only if flags are declared with identical names
}
if f.formal == nil {
f.formal = make(map[string]*Flag)
}
f.formal[name] = flag
}
// Var defines a flag with the specified name and usage string. The type and
// value of the flag are represented by the first argument, of type Value, which
// typically holds a user-defined implementation of Value. For instance, the
// caller could create a flag that turns a comma-separated string into a slice
// of strings by giving the slice the methods of Value; in particular, Set would
// decompose the comma-separated string into the slice.
func Var(value Value, name string, usage string) {
commandLine.Var(value, name, usage)
}
// failf prints to standard error a formatted error and usage message and
// returns the error.
func (f *FlagSet) failf(format string, a ...interface{}) error {
err := fmt.Errorf(format, a...)
fmt.Fprintln(f.out(), err)
f.usage()
return err
}
// usage calls the Usage method for the flag set, or the usage function if
// the flag set is commandLine.
func (f *FlagSet) usage() {
if f == commandLine {
Usage()
} else if f.Usage == nil {
defaultUsage(f)
} else {
f.Usage()
}
}
// parseOne parses one flag. It returns whether a flag was seen.
func (f *FlagSet) parseOne() (bool, error) {
if len(f.args) == 0 {
return false, nil
}
s := f.args[0]
if len(s) == 0 || s[0] != '-' || len(s) == 1 {
return false, nil
}
num_minuses := 1
if s[1] == '-' {
num_minuses++
if len(s) == 2 { // "--" terminates the flags
f.args = f.args[1:]
return false, nil
}
}
name := s[num_minuses:]
if len(name) == 0 || name[0] == '-' || name[0] == '=' {
return false, f.failf("bad flag syntax: %s", s)
}
// it's a flag. does it have an argument?
f.args = f.args[1:]
has_value := false
value := ""
for i := 1; i < len(name); i++ { // equals cannot be first
if name[i] == '=' {
value = name[i+1:]
has_value = true
name = name[0:i]
break
}
}
m := f.formal
flag, alreadythere := m[name] // BUG
if !alreadythere {
if name == "help" || name == "h" { // special case for nice help message.
f.usage()
return false, ErrHelp
}
return false, f.failf("flag provided but not defined: -%s", name)
}
if fv, ok := flag.Value.(*boolValue); ok { // special case: doesn't need an arg
if has_value {
if err := fv.Set(value); err != nil {
f.failf("invalid boolean value %q for -%s: %v", value, name, err)
}
} else {
fv.Set("true")
}
} else {
// It must have a value, which might be the next argument.
if !has_value && len(f.args) > 0 {
// value is the next arg
has_value = true
value, f.args = f.args[0], f.args[1:]
}
if !has_value {
return false, f.failf("flag needs an argument: -%s", name)
}
if err := flag.Value.Set(value); err != nil {
return false, f.failf("invalid value %q for flag -%s: %v", value, name, err)
}
}
if f.actual == nil {
f.actual = make(map[string]*Flag)
}
f.actual[name] = flag
return true, nil
}
// Parse parses flag definitions from the argument list, which should not
// include the command name. Must be called after all flags in the FlagSet
// are defined and before flags are accessed by the program.
// The return value will be ErrHelp if -help was set but not defined.
func (f *FlagSet) Parse(arguments []string) error {
f.parsed = true
f.args = arguments
for {
seen, err := f.parseOne()
if seen {
continue
}
if err == nil {
break
}
switch f.errorHandling {
case ContinueOnError:
return err
case ExitOnError:
os.Exit(2)
case PanicOnError:
panic(err)
}
}
return nil
}
// Parsed reports whether f.Parse has been called.
func (f *FlagSet) Parsed() bool {
return f.parsed
}
// Parse parses the command-line flags from os.Args[1:]. Must be called
// after all flags are defined and before flags are accessed by the program.
func Parse() {
// Ignore errors; commandLine is set for ExitOnError.
commandLine.Parse(os.Args[1:])
}
// Parsed returns true if the command-line flags have been parsed.
func Parsed() bool {
return commandLine.Parsed()
}
// The default set of command-line flags, parsed from os.Args.
var commandLine = NewFlagSet(os.Args[0], ExitOnError)
// NewFlagSet returns a new, empty flag set with the specified name and
// error handling property.
func NewFlagSet(name string, errorHandling ErrorHandling) *FlagSet {
f := &FlagSet{
name: name,
errorHandling: errorHandling,
}
return f
}
// Init sets the name and error handling property for a flag set.
// By default, the zero FlagSet uses an empty name and the
// ContinueOnError error handling policy.
func (f *FlagSet) Init(name string, errorHandling ErrorHandling) {
f.name = name
f.errorHandling = errorHandling
}

288
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@ -1,288 +0,0 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package flag_test
import (
"bytes"
"fmt"
"os"
"sort"
"strings"
"testing"
"time"
. "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/gonuts/flag"
)
var (
test_bool = Bool("test_bool", false, "bool value")
test_int = Int("test_int", 0, "int value")
test_int64 = Int64("test_int64", 0, "int64 value")
test_uint = Uint("test_uint", 0, "uint value")
test_uint64 = Uint64("test_uint64", 0, "uint64 value")
test_string = String("test_string", "0", "string value")
test_float64 = Float64("test_float64", 0, "float64 value")
test_duration = Duration("test_duration", 0, "time.Duration value")
)
func boolString(s string) string {
if s == "0" {
return "false"
}
return "true"
}
func TestEverything(t *testing.T) {
m := make(map[string]*Flag)
desired := "0"
visitor := func(f *Flag) {
if len(f.Name) > 5 && f.Name[0:5] == "test_" {
m[f.Name] = f
ok := false
switch {
case f.Value.String() == desired:
ok = true
case f.Name == "test_bool" && f.Value.String() == boolString(desired):
ok = true
case f.Name == "test_duration" && f.Value.String() == desired+"s":
ok = true
}
if !ok {
t.Error("Visit: bad value", f.Value.String(), "for", f.Name)
}
}
}
VisitAll(visitor)
if len(m) != 8 {
t.Error("VisitAll misses some flags")
for k, v := range m {
t.Log(k, *v)
}
}
m = make(map[string]*Flag)
Visit(visitor)
if len(m) != 0 {
t.Errorf("Visit sees unset flags")
for k, v := range m {
t.Log(k, *v)
}
}
// Now set all flags
Set("test_bool", "true")
Set("test_int", "1")
Set("test_int64", "1")
Set("test_uint", "1")
Set("test_uint64", "1")
Set("test_string", "1")
Set("test_float64", "1")
Set("test_duration", "1s")
desired = "1"
Visit(visitor)
if len(m) != 8 {
t.Error("Visit fails after set")
for k, v := range m {
t.Log(k, *v)
}
}
// Now test they're visited in sort order.
var flagNames []string
Visit(func(f *Flag) { flagNames = append(flagNames, f.Name) })
if !sort.StringsAreSorted(flagNames) {
t.Errorf("flag names not sorted: %v", flagNames)
}
}
func TestUsage(t *testing.T) {
called := false
ResetForTesting(func() { called = true })
if CommandLine().Parse([]string{"-x"}) == nil {
t.Error("parse did not fail for unknown flag")
}
if !called {
t.Error("did not call Usage for unknown flag")
}
}
func testParse(f *FlagSet, t *testing.T) {
if f.Parsed() {
t.Error("f.Parse() = true before Parse")
}
boolFlag := f.Bool("bool", false, "bool value")
bool2Flag := f.Bool("bool2", false, "bool2 value")
intFlag := f.Int("int", 0, "int value")
int64Flag := f.Int64("int64", 0, "int64 value")
uintFlag := f.Uint("uint", 0, "uint value")
uint64Flag := f.Uint64("uint64", 0, "uint64 value")
stringFlag := f.String("string", "0", "string value")
float64Flag := f.Float64("float64", 0, "float64 value")
durationFlag := f.Duration("duration", 5*time.Second, "time.Duration value")
extra := "one-extra-argument"
args := []string{
"-bool",
"-bool2=true",
"--int", "22",
"--int64", "0x23",
"-uint", "24",
"--uint64", "25",
"-string", "hello",
"-float64", "2718e28",
"-duration", "2m",
extra,
}
if err := f.Parse(args); err != nil {
t.Fatal(err)
}
if !f.Parsed() {
t.Error("f.Parse() = false after Parse")
}
if *boolFlag != true {
t.Error("bool flag should be true, is ", *boolFlag)
}
if *bool2Flag != true {
t.Error("bool2 flag should be true, is ", *bool2Flag)
}
if *intFlag != 22 {
t.Error("int flag should be 22, is ", *intFlag)
}
if *int64Flag != 0x23 {
t.Error("int64 flag should be 0x23, is ", *int64Flag)
}
if *uintFlag != 24 {
t.Error("uint flag should be 24, is ", *uintFlag)
}
if *uint64Flag != 25 {
t.Error("uint64 flag should be 25, is ", *uint64Flag)
}
if *stringFlag != "hello" {
t.Error("string flag should be `hello`, is ", *stringFlag)
}
if *float64Flag != 2718e28 {
t.Error("float64 flag should be 2718e28, is ", *float64Flag)
}
if *durationFlag != 2*time.Minute {
t.Error("duration flag should be 2m, is ", *durationFlag)
}
if len(f.Args()) != 1 {
t.Error("expected one argument, got", len(f.Args()))
} else if f.Args()[0] != extra {
t.Errorf("expected argument %q got %q", extra, f.Args()[0])
}
}
func TestParse(t *testing.T) {
ResetForTesting(func() { t.Error("bad parse") })
testParse(CommandLine(), t)
}
func TestFlagSetParse(t *testing.T) {
testParse(NewFlagSet("test", ContinueOnError), t)
}
// Declare a user-defined flag type.
type flagVar []string
func (f *flagVar) String() string {
return fmt.Sprint([]string(*f))
}
func (f *flagVar) Set(value string) error {
*f = append(*f, value)
return nil
}
func (f *flagVar) Get() interface{} { return []string(*f) }
func TestUserDefined(t *testing.T) {
var flags FlagSet
flags.Init("test", ContinueOnError)
var v flagVar
flags.Var(&v, "v", "usage")
if err := flags.Parse([]string{"-v", "1", "-v", "2", "-v=3"}); err != nil {
t.Error(err)
}
if len(v) != 3 {
t.Fatal("expected 3 args; got ", len(v))
}
expect := "[1 2 3]"
if v.String() != expect {
t.Errorf("expected value %q got %q", expect, v.String())
}
}
func TestSetOutput(t *testing.T) {
var flags FlagSet
var buf bytes.Buffer
flags.SetOutput(&buf)
flags.Init("test", ContinueOnError)
flags.Parse([]string{"-unknown"})
if out := buf.String(); !strings.Contains(out, "-unknown") {
t.Logf("expected output mentioning unknown; got %q", out)
}
}
// This tests that one can reset the flags. This still works but not well, and is
// superseded by FlagSet.
func TestChangingArgs(t *testing.T) {
ResetForTesting(func() { t.Fatal("bad parse") })
oldArgs := os.Args
defer func() { os.Args = oldArgs }()
os.Args = []string{"cmd", "-before", "subcmd", "-after", "args"}
before := Bool("before", false, "")
if err := CommandLine().Parse(os.Args[1:]); err != nil {
t.Fatal(err)
}
cmd := Arg(0)
os.Args = Args()
after := Bool("after", false, "")
Parse()
args := Args()
if !*before || cmd != "subcmd" || !*after || len(args) != 1 || args[0] != "args" {
t.Fatalf("expected true subcmd true [args] got %v %v %v %v", *before, cmd, *after, args)
}
}
// Test that -help invokes the usage message and returns ErrHelp.
func TestHelp(t *testing.T) {
var helpCalled = false
fs := NewFlagSet("help test", ContinueOnError)
fs.Usage = func() { helpCalled = true }
var flag bool
fs.BoolVar(&flag, "flag", false, "regular flag")
// Regular flag invocation should work
err := fs.Parse([]string{"-flag=true"})
if err != nil {
t.Fatal("expected no error; got ", err)
}
if !flag {
t.Error("flag was not set by -flag")
}
if helpCalled {
t.Error("help called for regular flag")
helpCalled = false // reset for next test
}
// Help flag should work as expected.
err = fs.Parse([]string{"-help"})
if err == nil {
t.Fatal("error expected")
}
if err != ErrHelp {
t.Fatal("expected ErrHelp; got ", err)
}
if !helpCalled {
t.Fatal("help was not called")
}
// If we define a help flag, that should override.
var help bool
fs.BoolVar(&help, "help", false, "help flag")
helpCalled = false
err = fs.Parse([]string{"-help"})
if err != nil {
t.Fatal("expected no error for defined -help; got ", err)
}
if helpCalled {
t.Fatal("help was called; should not have been for defined help flag")
}
}

26
Godeps/_workspace/src/github.com/h2so5/utp/.gitignore generated vendored Normal file
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
*.prof
_ucat_test/libutp

7
Godeps/_workspace/src/github.com/h2so5/utp/.travis.yml generated vendored Normal file
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@ -0,0 +1,7 @@
language: go
script:
- GO_UTP_LOGGING=2 go test -v -bench .
- go test -v -race
- GO_UTP_LOGGING=2 go run benchmark/main.go -h
- GO_UTP_LOGGING=2 cd _ucat_test; make test

21
Godeps/_workspace/src/github.com/h2so5/utp/LICENSE generated vendored Normal file
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@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2014 Ron Hashimoto
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

57
Godeps/_workspace/src/github.com/h2so5/utp/README.md generated vendored Normal file
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utp
===
μTP (Micro Transport Protocol) implementation
[![Build status](https://ci.appveyor.com/api/projects/status/j1be8y7p6nd2wqqw?svg=true)](https://ci.appveyor.com/project/h2so5/utp)
[![Build Status](https://travis-ci.org/h2so5/utp.svg)](https://travis-ci.org/h2so5/utp)
[![GoDoc](https://godoc.org/github.com/h2so5/utp?status.svg)](http://godoc.org/github.com/h2so5/utp)
http://www.bittorrent.org/beps/bep_0029.html
**warning: This is a buggy alpha version.**
## Benchmark History
[![Benchmark status](http://107.170.244.57:80/go-utp-bench.php)]()
## Installation
```
go get github.com/h2so5/utp
```
## Example
Echo server
```go
package main
import (
"time"
"github.com/h2so5/utp"
)
func main() {
ln, _ := utp.Listen("utp", ":11000")
defer ln.Close()
conn, _ := ln.AcceptUTP()
conn.SetKeepAlive(time.Minute)
defer conn.Close()
for {
var buf [1024]byte
l, err := conn.Read(buf[:])
if err != nil {
break
}
_, err = conn.Write(buf[:l])
if err != nil {
break
}
}
}
```

34
Godeps/_workspace/src/github.com/h2so5/utp/addr.go generated vendored Normal file
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package utp
import "net"
type UTPAddr struct {
net.Addr
}
func (a UTPAddr) Network() string { return "utp" }
func utp2udp(n string) (string, error) {
switch n {
case "utp":
return "udp", nil
case "utp4":
return "udp4", nil
case "utp6":
return "udp6", nil
default:
return "", net.UnknownNetworkError(n)
}
}
func ResolveUTPAddr(n, addr string) (*UTPAddr, error) {
udpnet, err := utp2udp(n)
if err != nil {
return nil, err
}
udp, err := net.ResolveUDPAddr(udpnet, addr)
if err != nil {
return nil, err
}
return &UTPAddr{Addr: udp}, nil
}

276
Godeps/_workspace/src/github.com/h2so5/utp/benchmark/main.go generated vendored Normal file
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package main
import (
"bytes"
"crypto/md5"
"flag"
"fmt"
"io"
"log"
"math/rand"
"sync"
"time"
"github.com/davecheney/profile"
"github.com/dustin/go-humanize"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/h2so5/utp"
)
type RandReader struct{}
func (r RandReader) Read(p []byte) (n int, err error) {
for i := range p {
p[i] = byte(rand.Int())
}
return len(p), nil
}
type ByteCounter struct {
n int64
mutex sync.RWMutex
}
func (b *ByteCounter) Write(p []byte) (n int, err error) {
b.mutex.Lock()
defer b.mutex.Unlock()
b.n += int64(len(p))
return len(p), nil
}
func (b *ByteCounter) Length() int64 {
b.mutex.RLock()
defer b.mutex.RUnlock()
return b.n
}
var h = flag.Bool("h", false, "Human readable")
func main() {
var l = flag.Int("c", 10485760, "Payload length (bytes)")
var s = flag.Bool("s", false, "Stream mode(Low memory usage, but Slow)")
flag.Parse()
defer profile.Start(profile.CPUProfile).Stop()
if *h {
fmt.Printf("Payload: %s\n", humanize.IBytes(uint64(*l)))
} else {
fmt.Printf("Payload: %d\n", *l)
}
c2s := c2s(int64(*l), *s)
n, p := humanize.ComputeSI(c2s)
if *h {
fmt.Printf("C2S: %f%sbps\n", n, p)
} else {
fmt.Printf("C2S: %f\n", c2s)
}
s2c := s2c(int64(*l), *s)
n, p = humanize.ComputeSI(s2c)
if *h {
fmt.Printf("S2C: %f%sbps\n", n, p)
} else {
fmt.Printf("S2C: %f\n", s2c)
}
avg := (c2s + s2c) / 2.0
n, p = humanize.ComputeSI(avg)
if *h {
fmt.Printf("AVG: %f%sbps\n", n, p)
} else {
fmt.Printf("AVG: %f\n", avg)
}
}
func c2s(l int64, stream bool) float64 {
ln, err := utp.Listen("utp", "127.0.0.1:0")
if err != nil {
log.Fatal(err)
}
raddr, err := utp.ResolveUTPAddr("utp", ln.Addr().String())
if err != nil {
log.Fatal(err)
}
c, err := utp.DialUTPTimeout("utp", nil, raddr, 1000*time.Millisecond)
if err != nil {
log.Fatal(err)
}
defer c.Close()
if err != nil {
log.Fatal(err)
}
s, err := ln.Accept()
if err != nil {
log.Fatal(err)
}
defer s.Close()
ln.Close()
rch := make(chan int)
sendHash := md5.New()
readHash := md5.New()
counter := ByteCounter{}
var bps float64
if stream {
go func() {
defer c.Close()
io.Copy(io.MultiWriter(c, sendHash, &counter), io.LimitReader(RandReader{}, l))
}()
go func() {
io.Copy(readHash, s)
close(rch)
}()
go func() {
for {
select {
case <-time.After(time.Second):
if *h {
fmt.Printf("\r <--> %s ", humanize.IBytes(uint64(counter.Length())))
} else {
fmt.Printf("\r <--> %d ", counter.Length())
}
case <-rch:
fmt.Printf("\r")
return
}
}
}()
start := time.Now()
<-rch
bps = float64(l*8) / (float64(time.Now().Sub(start)) / float64(time.Second))
} else {
var sendBuf, readBuf bytes.Buffer
io.Copy(io.MultiWriter(&sendBuf, sendHash), io.LimitReader(RandReader{}, l))
go func() {
defer c.Close()
io.Copy(c, &sendBuf)
}()
go func() {
io.Copy(&readBuf, s)
rch <- 0
}()
start := time.Now()
<-rch
bps = float64(l*8) / (float64(time.Now().Sub(start)) / float64(time.Second))
io.Copy(sendHash, &sendBuf)
io.Copy(readHash, &readBuf)
}
if !bytes.Equal(sendHash.Sum(nil), readHash.Sum(nil)) {
log.Fatal("Broken payload")
}
return bps
}
func s2c(l int64, stream bool) float64 {
ln, err := utp.Listen("utp", "127.0.0.1:0")
if err != nil {
log.Fatal(err)
}
raddr, err := utp.ResolveUTPAddr("utp", ln.Addr().String())
if err != nil {
log.Fatal(err)
}
c, err := utp.DialUTPTimeout("utp", nil, raddr, 1000*time.Millisecond)
if err != nil {
log.Fatal(err)
}
defer c.Close()
if err != nil {
log.Fatal(err)
}
s, err := ln.Accept()
if err != nil {
log.Fatal(err)
}
defer s.Close()
ln.Close()
rch := make(chan int)
sendHash := md5.New()
readHash := md5.New()
counter := ByteCounter{}
var bps float64
if stream {
go func() {
defer s.Close()
io.Copy(io.MultiWriter(s, sendHash, &counter), io.LimitReader(RandReader{}, l))
}()
go func() {
io.Copy(readHash, c)
close(rch)
}()
go func() {
for {
select {
case <-time.After(time.Second):
if *h {
fmt.Printf("\r <--> %s ", humanize.IBytes(uint64(counter.Length())))
} else {
fmt.Printf("\r <--> %d ", counter.Length())
}
case <-rch:
fmt.Printf("\r")
return
}
}
}()
start := time.Now()
<-rch
bps = float64(l*8) / (float64(time.Now().Sub(start)) / float64(time.Second))
} else {
var sendBuf, readBuf bytes.Buffer
io.Copy(io.MultiWriter(&sendBuf, sendHash), io.LimitReader(RandReader{}, l))
go func() {
defer s.Close()
io.Copy(s, &sendBuf)
}()
go func() {
io.Copy(&readBuf, c)
rch <- 0
}()
start := time.Now()
<-rch
bps = float64(l*8) / (float64(time.Now().Sub(start)) / float64(time.Second))
io.Copy(sendHash, &sendBuf)
io.Copy(readHash, &readBuf)
}
if !bytes.Equal(sendHash.Sum(nil), readHash.Sum(nil)) {
log.Fatal("Broken payload")
}
return bps
}

230
Godeps/_workspace/src/github.com/h2so5/utp/buffer.go generated vendored Normal file
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@ -0,0 +1,230 @@
package utp
import (
"errors"
"math"
"time"
)
type packetBuffer struct {
root *packetBufferNode
size int
begin int
}
type packetBufferNode struct {
p *packet
next *packetBufferNode
pushed time.Time
}
func newPacketBuffer(size, begin int) *packetBuffer {
return &packetBuffer{
size: size,
begin: begin,
}
}
func (b *packetBuffer) push(p *packet) error {
if int(p.header.seq) > b.begin+b.size-1 {
return errors.New("out of bounds")
} else if int(p.header.seq) < b.begin {
if int(p.header.seq)+math.MaxUint16 > b.begin+b.size-1 {
return errors.New("out of bounds")
}
}
if b.root == nil {
b.root = &packetBufferNode{}
}
n := b.root
i := b.begin
for {
if i == int(p.header.seq) {
n.p = p
n.pushed = time.Now()
return nil
} else if n.next == nil {
n.next = &packetBufferNode{}
}
n = n.next
i = (i + 1) % (math.MaxUint16 + 1)
}
return nil
}
func (b *packetBuffer) fetch(id uint16) *packet {
for p := b.root; p != nil; p = p.next {
if p.p != nil {
if p.p.header.seq < id {
p.p = nil
} else if p.p.header.seq == id {
r := p.p
p.p = nil
return r
}
}
}
return nil
}
func (b *packetBuffer) compact() {
for b.root != nil && b.root.p == nil {
b.root = b.root.next
b.begin = (b.begin + 1) % (math.MaxUint16 + 1)
}
}
func (b *packetBuffer) first() *packet {
if b.root == nil || b.root.p == nil {
return nil
}
return b.root.p
}
func (b *packetBuffer) frontPushedTime() (time.Time, error) {
if b.root == nil || b.root.p == nil {
return time.Time{}, errors.New("no first packet")
}
return b.root.pushed, nil
}
func (b *packetBuffer) fetchSequence() []*packet {
var a []*packet
for ; b.root != nil && b.root.p != nil; b.root = b.root.next {
a = append(a, b.root.p)
b.begin = (b.begin + 1) % (math.MaxUint16 + 1)
}
return a
}
func (b *packetBuffer) sequence() []*packet {
var a []*packet
n := b.root
for ; n != nil && n.p != nil; n = n.next {
a = append(a, n.p)
}
return a
}
func (b *packetBuffer) space() int {
s := b.size
for p := b.root; p != nil; p = p.next {
s--
}
return s
}
func (b *packetBuffer) empty() bool {
return b.root == nil
}
// test use only
func (b *packetBuffer) all() []*packet {
var a []*packet
for p := b.root; p != nil; p = p.next {
if p.p != nil {
a = append(a, p.p)
}
}
return a
}
func (b *packetBuffer) generateSelectiveACK() []byte {
if b.empty() {
return nil
}
var ack []byte
var bit uint
var octet byte
for p := b.root.next; p != nil; p = p.next {
if p.p != nil {
octet |= (1 << bit)
}
bit++
if bit == 8 {
ack = append(ack, octet)
bit = 0
octet = 0
}
}
if bit != 0 {
ack = append(ack, octet)
}
for len(ack) > 0 && ack[len(ack)-1] == 0 {
ack = ack[:len(ack)-1]
}
return ack
}
func (b *packetBuffer) processSelectiveACK(ack []byte) {
if b.empty() {
return
}
p := b.root.next
if p == nil {
return
}
for _, a := range ack {
for i := 0; i < 8; i++ {
acked := (a & 1) != 0
a >>= 1
if acked {
p.p = nil
}
p = p.next
if p == nil {
return
}
}
}
}
type timedBuffer struct {
d time.Duration
root *timedBufferNode
}
type timedBufferNode struct {
val float64
next *timedBufferNode
pushed time.Time
}
func (b *timedBuffer) push(val float64) {
var before *timedBufferNode
for n := b.root; n != nil; n = n.next {
if time.Now().Sub(n.pushed) >= b.d {
if before != nil {
before.next = nil
} else {
b.root = nil
}
break
}
before = n
}
b.root = &timedBufferNode{
val: val,
next: b.root,
pushed: time.Now(),
}
}
func (b *timedBuffer) min() float64 {
if b.root == nil {
return 0
}
min := b.root.val
for n := b.root; n != nil; n = n.next {
if min > n.val {
min = n.val
}
}
return min
}

761
Godeps/_workspace/src/github.com/h2so5/utp/conn.go generated vendored Normal file
View File

@ -0,0 +1,761 @@
package utp
import (
"bytes"
"errors"
"io"
"math"
"math/rand"
"net"
"syscall"
"time"
)
type UTPConn struct {
conn net.PacketConn
raddr net.Addr
rid, sid, seq, ack, lastAck uint16
rtt, rttVar, minRtt, rto, dupAck int64
diff, maxWindow uint32
rdeadline, wdeadline time.Time
state state
lastTimedOut time.Time
outch chan *outgoingPacket
outchch chan int
sendch chan *outgoingPacket
sendchch chan int
recvch chan *packet
recvchch chan int
readch chan []byte
readchch chan int
winch chan uint32
quitch chan int
activech chan int
connch chan error
finch chan int
closech chan<- uint16
eofid uint16
keepalivech chan time.Duration
readbuf bytes.Buffer
recvbuf *packetBuffer
sendbuf *packetBuffer
stat statistics
}
type statistics struct {
sentPackets int
resentPackets int
receivedPackets int
receivedDuplicatedACKs int
packetTimedOuts int
sentSelectiveACKs int
receivedSelectiveACKs int
rtoSum int
rtoCount int
}
func dial(n string, laddr, raddr *UTPAddr, timeout time.Duration) (*UTPConn, error) {
udpnet, err := utp2udp(n)
if err != nil {
return nil, err
}
// TODO extract
if laddr == nil {
addr, err := net.ResolveUDPAddr(udpnet, ":0")
if err != nil {
return nil, err
}
laddr = &UTPAddr{Addr: addr}
}
conn, err := net.ListenPacket(udpnet, laddr.Addr.String())
if err != nil {
return nil, err
}
id := uint16(rand.Intn(math.MaxUint16))
c := newUTPConn()
c.conn = conn
c.raddr = raddr.Addr
c.rid = id
c.sid = id + 1
c.seq = 1
c.state = state_syn_sent
c.sendbuf = newPacketBuffer(window_size, 1)
go c.recv()
go c.loop()
select {
case c.sendch <- &outgoingPacket{st_syn, nil, nil}:
case <-c.sendchch:
return nil, errors.New("use of closed network connection")
}
var t <-chan time.Time
if timeout != 0 {
t = time.After(timeout)
}
select {
case err := <-c.connch:
if err != nil {
c.closed()
return nil, err
}
ulog.Printf(1, "Conn(%v): Connected", c.LocalAddr())
return c, nil
case <-t:
c.quitch <- 0
return nil, &timeoutError{}
}
}
func newUTPConn() *UTPConn {
rto := 60
return &UTPConn{
minRtt: math.MaxInt64,
maxWindow: mtu,
rto: int64(rto),
outch: make(chan *outgoingPacket, 1),
outchch: make(chan int),
sendch: make(chan *outgoingPacket, 1),
sendchch: make(chan int),
recvch: make(chan *packet, 2),
recvchch: make(chan int),
winch: make(chan uint32, 1),
quitch: make(chan int),
activech: make(chan int),
readch: make(chan []byte, 1),
readchch: make(chan int),
connch: make(chan error, 1),
finch: make(chan int, 1),
keepalivech: make(chan time.Duration),
stat: statistics{
rtoSum: rto,
rtoCount: 1,
},
}
}
func (c *UTPConn) ok() bool { return c != nil && c.conn != nil }
func (c *UTPConn) Close() error {
if !c.ok() {
return syscall.EINVAL
}
select {
case <-c.activech:
default:
c.quitch <- 0
ulog.Printf(2, "Conn(%v): Wait for close", c.LocalAddr())
<-c.finch
}
return nil
}
func (c *UTPConn) LocalAddr() net.Addr {
return &UTPAddr{Addr: c.conn.LocalAddr()}
}
func (c *UTPConn) RemoteAddr() net.Addr {
return &UTPAddr{Addr: c.raddr}
}
func (c *UTPConn) Read(b []byte) (int, error) {
if !c.ok() {
return 0, syscall.EINVAL
}
if c.readbuf.Len() == 0 {
var timeout <-chan time.Time
if !c.rdeadline.IsZero() {
timeout = time.After(c.rdeadline.Sub(time.Now()))
}
select {
case b := <-c.readch:
if b == nil {
return 0, io.EOF
}
_, err := c.readbuf.Write(b)
if err != nil {
return 0, err
}
case <-c.readchch:
loop:
for {
select {
case b := <-c.readch:
_, err := c.readbuf.Write(b)
if err != nil {
return 0, err
}
default:
break loop
}
}
if c.readbuf.Len() == 0 {
return 0, io.EOF
}
case <-timeout:
return 0, &timeoutError{}
}
}
return c.readbuf.Read(b)
}
func (c *UTPConn) Write(b []byte) (int, error) {
if !c.ok() {
return 0, syscall.EINVAL
}
var wrote uint64
for {
l := uint64(len(b)) - wrote
if l > mss {
l = mss
}
select {
case c.outch <- &outgoingPacket{st_data, nil, b[wrote : wrote+l]}:
case <-c.outchch:
return 0, errors.New("use of closed network connection")
}
wrote += l
ulog.Printf(4, "Conn(%v): Write %d/%d bytes", c.LocalAddr(), wrote, len(b))
if l < mss {
break
}
}
return len(b), nil
}
func (c *UTPConn) SetDeadline(t time.Time) error {
if !c.ok() {
return syscall.EINVAL
}
if err := c.SetReadDeadline(t); err != nil {
return err
}
if err := c.SetWriteDeadline(t); err != nil {
return err
}
return nil
}
func (c *UTPConn) SetReadDeadline(t time.Time) error {
if !c.ok() {
return syscall.EINVAL
}
c.rdeadline = t
return nil
}
func (c *UTPConn) SetWriteDeadline(t time.Time) error {
if !c.ok() {
return syscall.EINVAL
}
c.wdeadline = t
return nil
}
func (c *UTPConn) SetKeepAlive(d time.Duration) error {
if !c.ok() {
return syscall.EINVAL
}
select {
case <-c.activech:
default:
c.keepalivech <- d
}
return nil
}
func readPacket(data []byte) (*packet, error) {
p := globalPool.get()
err := p.UnmarshalBinary(data)
if err != nil {
return nil, err
}
if p.header.ver != version {
return nil, errors.New("unsupported header version")
}
return p, nil
}
func (c *UTPConn) recv() {
for {
var buf [mtu]byte
len, addr, err := c.conn.ReadFrom(buf[:])
if err != nil {
return
}
if addr.String() != c.raddr.String() {
continue
}
p, err := readPacket(buf[:len])
if err == nil {
select {
case c.recvch <- p:
case <-c.recvchch:
return
}
}
}
}
func (c *UTPConn) loop() {
var recvExit, sendExit bool
var lastReceived time.Time
var keepalive <-chan time.Time
go func() {
var window uint32 = window_size * mtu
for {
if window >= mtu {
select {
case b := <-c.outch:
select {
case c.sendch <- b:
window -= mtu
case <-c.sendchch:
return
}
case <-c.outchch:
return
case w := <-c.winch:
window = w
}
} else {
window = <-c.winch
}
}
}()
for {
select {
case <-c.sendchch:
sendExit = true
default:
}
select {
case <-c.recvchch:
recvExit = true
default:
}
select {
case p := <-c.recvch:
ack := c.processPacket(p)
lastReceived = time.Now()
if ack {
out := &outgoingPacket{st_state, nil, nil}
selack := c.sendbuf.generateSelectiveACK()
if len(selack) > 0 {
out.ext = []extension{
extension{
typ: ext_selective_ack,
payload: selack,
},
}
c.stat.sentSelectiveACKs++
}
c.sendPacket(out)
}
case b := <-c.sendch:
c.sendPacket(b)
case <-time.After(time.Duration(c.rto) * time.Millisecond):
if !c.state.active && time.Now().Sub(lastReceived) > reset_timeout {
ulog.Printf(2, "Conn(%v): Connection timed out", c.LocalAddr())
c.sendPacket(&outgoingPacket{st_reset, nil, nil})
c.close()
} else {
t, err := c.sendbuf.frontPushedTime()
if err == nil && c.lastTimedOut != t && time.Now().Sub(t) > time.Duration(c.rto)*time.Millisecond {
c.lastTimedOut = t
c.stat.packetTimedOuts++
c.maxWindow /= 2
if c.maxWindow < mtu {
c.maxWindow = mtu
}
for _, p := range c.sendbuf.sequence() {
c.resendPacket(p)
}
}
}
case d := <-c.keepalivech:
if d <= 0 {
keepalive = nil
} else {
keepalive = time.Tick(d)
}
case <-keepalive:
ulog.Printf(2, "Conn(%v): Send keepalive", c.LocalAddr())
c.sendPacket(&outgoingPacket{st_state, nil, nil})
case <-c.quitch:
if c.state.exit != nil {
c.state.exit(c)
}
}
if recvExit && sendExit {
return
}
}
}
func (c *UTPConn) sendPacket(b *outgoingPacket) {
p := c.makePacket(b)
bin, err := p.MarshalBinary()
if err == nil {
ulog.Printf(3, "SEND %v -> %v: %v", c.conn.LocalAddr(), c.raddr, p.String())
c.stat.sentPackets++
_, err = c.conn.WriteTo(bin, c.raddr)
if err != nil {
return
}
if b.typ != st_state {
c.sendbuf.push(p)
} else {
globalPool.put(p)
}
}
}
func (c *UTPConn) resendPacket(p *packet) {
bin, err := p.MarshalBinary()
if err == nil {
ulog.Printf(3, "RESEND %v -> %v: %v", c.conn.LocalAddr(), c.raddr, p.String())
c.stat.resentPackets++
_, err = c.conn.WriteTo(bin, c.raddr)
if err != nil {
return
}
}
}
func currentMicrosecond() uint32 {
return uint32(time.Now().Nanosecond() / 1000)
}
func (c *UTPConn) processPacket(p *packet) bool {
var ack bool
if p.header.t == 0 {
c.diff = 0
} else {
t := currentMicrosecond()
if t > p.header.t {
c.diff = t - p.header.t
if c.minRtt > int64(c.diff) {
c.minRtt = int64(c.diff)
}
}
}
ulog.Printf(3, "RECV %v -> %v: %v", c.raddr, c.conn.LocalAddr(), p.String())
c.stat.receivedPackets++
if p.header.typ == st_state {
f := c.sendbuf.first()
if f != nil && p.header.ack == f.header.seq {
for _, e := range p.ext {
if e.typ == ext_selective_ack {
ulog.Printf(3, "Conn(%v): Receive Selective ACK", c.LocalAddr())
c.stat.receivedSelectiveACKs++
c.sendbuf.processSelectiveACK(e.payload)
}
}
}
s := c.sendbuf.fetch(p.header.ack)
if s != nil {
current := currentMicrosecond()
if current > s.header.t {
e := int64(current-s.header.t) / 1000
if c.rtt == 0 {
c.rtt = e
c.rttVar = e / 2
} else {
d := c.rtt - e
if d < 0 {
d = -d
}
c.rttVar += (d - c.rttVar) / 4
c.rtt = c.rtt - c.rtt/8 + e/8
}
c.rto = c.rtt + c.rttVar*4
if c.rto < 60 {
c.rto = 60
} else if c.rto > 1000 {
c.rto = 1000
}
c.stat.rtoSum += int(c.rto)
c.stat.rtoCount++
}
if c.diff != 0 {
ourDelay := float64(c.diff)
offTarget := 100000.0 - ourDelay
windowFactor := float64(mtu) / float64(c.maxWindow)
delayFactor := offTarget / 100000.0
gain := 3000.0 * delayFactor * windowFactor
c.maxWindow = uint32(int(c.maxWindow) + int(gain))
if c.maxWindow < mtu {
c.maxWindow = mtu
}
ulog.Printf(4, "Conn(%v): Update maxWindow: %d", c.LocalAddr(), c.maxWindow)
}
globalPool.put(s)
}
c.sendbuf.compact()
if c.lastAck == p.header.ack {
c.dupAck++
if c.dupAck >= 2 {
ulog.Printf(3, "Conn(%v): Receive 3 duplicated acks: %d", c.LocalAddr(), p.header.ack)
c.stat.receivedDuplicatedACKs++
p := c.sendbuf.first()
if p != nil {
c.maxWindow /= 2
if c.maxWindow < mtu {
c.maxWindow = mtu
}
ulog.Printf(4, "Conn(%v): Update maxWindow: %d", c.LocalAddr(), c.maxWindow)
c.resendPacket(p)
}
c.dupAck = 0
}
} else {
c.dupAck = 0
}
c.lastAck = p.header.ack
if p.header.ack == c.seq-1 {
wnd := p.header.wnd
if wnd > c.maxWindow {
wnd = c.maxWindow
}
ulog.Printf(4, "Conn(%v): Reset window: %d", c.LocalAddr(), wnd)
go func() {
c.winch <- wnd
}()
}
if c.state.state != nil {
c.state.state(c, p)
}
globalPool.put(p)
} else if p.header.typ == st_reset {
globalPool.put(p)
c.close()
} else {
if c.recvbuf == nil {
return false
}
ack = true
c.recvbuf.push(p)
for _, s := range c.recvbuf.fetchSequence() {
c.ack = s.header.seq
switch s.header.typ {
case st_data:
if c.state.data != nil {
c.state.data(c, s)
}
case st_fin:
if c.state.fin != nil {
c.state.fin(c, s)
}
case st_state:
if c.state.state != nil {
c.state.state(c, s)
}
}
globalPool.put(s)
}
}
return ack
}
func (c *UTPConn) makePacket(b *outgoingPacket) *packet {
wnd := window_size * mtu
if c.recvbuf != nil {
wnd = c.recvbuf.space() * mtu
}
id := c.sid
if b.typ == st_syn {
id = c.rid
}
p := globalPool.get()
p.header.typ = b.typ
p.header.ver = version
p.header.id = id
p.header.t = currentMicrosecond()
p.header.diff = c.diff
p.header.wnd = uint32(wnd)
p.header.seq = c.seq
p.header.ack = c.ack
if b.typ == st_fin {
c.eofid = c.seq
}
if !(b.typ == st_state && len(b.payload) == 0) {
c.seq++
}
p.payload = p.payload[:len(b.payload)]
copy(p.payload, b.payload)
return p
}
func (c *UTPConn) close() {
if !c.state.closed {
close(c.outchch)
close(c.readchch)
close(c.sendchch)
close(c.recvchch)
close(c.activech)
close(c.finch)
c.closed()
// Accepted connection
if c.closech != nil {
c.closech <- c.sid
} else {
c.conn.Close()
}
ulog.Printf(1, "Conn(%v): Closed", c.LocalAddr())
ulog.Printf(1, "Conn(%v): * SentPackets: %d", c.LocalAddr(), c.stat.sentPackets)
ulog.Printf(1, "Conn(%v): * ResentPackets: %d", c.LocalAddr(), c.stat.resentPackets)
ulog.Printf(1, "Conn(%v): * ReceivedPackets: %d", c.LocalAddr(), c.stat.receivedPackets)
ulog.Printf(1, "Conn(%v): * ReceivedDuplicatedACKs: %d", c.LocalAddr(), c.stat.receivedDuplicatedACKs)
ulog.Printf(1, "Conn(%v): * PacketTimedOuts: %d", c.LocalAddr(), c.stat.packetTimedOuts)
ulog.Printf(1, "Conn(%v): * SentSelectiveACKs: %d", c.LocalAddr(), c.stat.sentSelectiveACKs)
ulog.Printf(1, "Conn(%v): * ReceivedSelectiveACKs: %d", c.LocalAddr(), c.stat.receivedSelectiveACKs)
ulog.Printf(1, "Conn(%v): * AverageRTO: %d", c.LocalAddr(), c.stat.rtoSum/c.stat.rtoCount)
}
}
func (c *UTPConn) closed() {
ulog.Printf(2, "Conn(%v): Change state: CLOSED", c.LocalAddr())
c.state = state_closed
}
func (c *UTPConn) closing() {
ulog.Printf(2, "Conn(%v): Change state: CLOSING", c.LocalAddr())
c.state = state_closing
}
func (c *UTPConn) syn_sent() {
ulog.Printf(2, "Conn(%v): Change state: SYN_SENT", c.LocalAddr())
c.state = state_syn_sent
}
func (c *UTPConn) connected() {
ulog.Printf(2, "Conn(%v): Change state: CONNECTED", c.LocalAddr())
c.state = state_connected
}
func (c *UTPConn) fin_sent() {
ulog.Printf(2, "Conn(%v): Change state: FIN_SENT", c.LocalAddr())
c.state = state_fin_sent
}
type state struct {
data func(c *UTPConn, p *packet)
fin func(c *UTPConn, p *packet)
state func(c *UTPConn, p *packet)
exit func(c *UTPConn)
active bool
closed bool
}
var state_closed state = state{
closed: true,
}
var state_closing state = state{
data: func(c *UTPConn, p *packet) {
select {
case c.readch <- append([]byte(nil), p.payload...):
case <-c.readchch:
}
if c.recvbuf.empty() && c.sendbuf.empty() {
c.close()
}
},
state: func(c *UTPConn, p *packet) {
if c.recvbuf.empty() && c.sendbuf.empty() {
c.close()
}
},
}
var state_syn_sent state = state{
state: func(c *UTPConn, p *packet) {
c.recvbuf = newPacketBuffer(window_size, int(p.header.seq))
c.connected()
c.connch <- nil
},
exit: func(c *UTPConn) {
go func() {
select {
case c.outch <- &outgoingPacket{st_fin, nil, nil}:
case <-c.outchch:
}
}()
c.fin_sent()
},
active: true,
}
var state_connected state = state{
data: func(c *UTPConn, p *packet) {
select {
case c.readch <- append([]byte(nil), p.payload...):
case <-c.readchch:
}
},
fin: func(c *UTPConn, p *packet) {
if c.recvbuf.empty() && c.sendbuf.empty() {
c.close()
} else {
c.closing()
}
},
exit: func(c *UTPConn) {
go func() {
select {
case c.outch <- &outgoingPacket{st_fin, nil, nil}:
case <-c.outchch:
}
}()
c.fin_sent()
},
active: true,
}
var state_fin_sent state = state{
state: func(c *UTPConn, p *packet) {
if p.header.ack == c.eofid {
if c.recvbuf.empty() && c.sendbuf.empty() {
c.close()
} else {
c.closing()
}
}
},
}

68
Godeps/_workspace/src/github.com/h2so5/utp/dial.go generated vendored Normal file
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@ -0,0 +1,68 @@
package utp
import (
"errors"
"net"
"time"
)
func Dial(n, addr string) (*UTPConn, error) {
raddr, err := ResolveUTPAddr(n, addr)
if err != nil {
return nil, err
}
return DialUTP(n, nil, raddr)
}
func DialUTP(n string, laddr, raddr *UTPAddr) (*UTPConn, error) {
return dial(n, laddr, raddr, 0)
}
func DialUTPTimeout(n string, laddr, raddr *UTPAddr, timeout time.Duration) (*UTPConn, error) {
return dial(n, laddr, raddr, timeout)
}
// A Dialer contains options for connecting to an address.
//
// The zero value for each field is equivalent to dialing without
// that option. Dialing with the zero value of Dialer is therefore
// equivalent to just calling the Dial function.
type Dialer struct {
// Timeout is the maximum amount of time a dial will wait for
// a connect to complete. If Deadline is also set, it may fail
// earlier.
//
// The default is no timeout.
//
// With or without a timeout, the operating system may impose
// its own earlier timeout. For instance, TCP timeouts are
// often around 3 minutes.
Timeout time.Duration
// LocalAddr is the local address to use when dialing an
// address. The address must be of a compatible type for the
// network being dialed.
// If nil, a local address is automatically chosen.
LocalAddr net.Addr
}
// Dial connects to the address on the named network.
//
// See func Dial for a description of the network and address parameters.
func (d *Dialer) Dial(n, addr string) (*UTPConn, error) {
raddr, err := ResolveUTPAddr(n, addr)
if err != nil {
return nil, err
}
var laddr *UTPAddr
if d.LocalAddr != nil {
var ok bool
laddr, ok = d.LocalAddr.(*UTPAddr)
if !ok {
return nil, errors.New("Dialer.LocalAddr is not a UTPAddr")
}
}
return DialUTPTimeout(n, laddr, raddr, d.Timeout)
}

329
Godeps/_workspace/src/github.com/h2so5/utp/listener.go generated vendored Normal file
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@ -0,0 +1,329 @@
package utp
import (
"errors"
"math"
"math/rand"
"net"
"syscall"
"time"
)
type UTPListener struct {
// RawConn represents an out-of-band connection.
// This allows a single socket to handle multiple protocols.
RawConn net.PacketConn
conn net.PacketConn
conns map[uint16]*UTPConn
accept chan (*UTPConn)
err chan (error)
lasterr error
deadline time.Time
closech chan int
connch chan uint16
closed bool
}
func Listen(n, laddr string) (*UTPListener, error) {
addr, err := ResolveUTPAddr(n, laddr)
if err != nil {
return nil, err
}
return ListenUTP(n, addr)
}
func ListenUTP(n string, laddr *UTPAddr) (*UTPListener, error) {
udpnet, err := utp2udp(n)
if err != nil {
return nil, err
}
conn, err := listenPacket(udpnet, laddr.Addr.String())
if err != nil {
return nil, err
}
l := UTPListener{
RawConn: newRawConn(conn),
conn: conn,
conns: make(map[uint16]*UTPConn),
accept: make(chan (*UTPConn), 10),
err: make(chan (error), 1),
closech: make(chan int),
connch: make(chan uint16),
lasterr: nil,
}
l.listen()
return &l, nil
}
type incoming struct {
p *packet
addr net.Addr
}
func (l *UTPListener) listen() {
inch := make(chan incoming)
raw := l.RawConn.(*rawConn)
// reads udp packets
go func() {
for {
var buf [mtu]byte
len, addr, err := l.conn.ReadFrom(buf[:])
if err != nil {
l.err <- err
return
}
p, err := readPacket(buf[:len])
if err == nil {
inch <- incoming{p, addr}
} else {
select {
case <-raw.closed:
default:
i := rawIncoming{b: buf[:len], addr: addr}
select {
case raw.in <- i:
default:
// discard the oldest packet
<-raw.in
raw.in <- i
}
}
}
}
}()
go func() {
for {
select {
case i := <-inch:
l.processPacket(i.p, i.addr)
case <-l.closech:
ulog.Printf(2, "Listener(%v): Stop listening", l.conn.LocalAddr())
close(l.accept)
l.closed = true
case id := <-l.connch:
if _, ok := l.conns[id]; !ok {
delete(l.conns, id+1)
ulog.Printf(2, "Listener(%v): Connection closed #%d (alive: %d)", l.conn.LocalAddr(), id, len(l.conns))
if l.closed && len(l.conns) == 0 {
ulog.Printf(2, "Listener(%v): All accepted connections are closed", l.conn.LocalAddr())
l.conn.Close()
ulog.Printf(1, "Listener(%v): Closed", l.conn.LocalAddr())
return
}
}
}
}
}()
ulog.Printf(1, "Listener(%v): Start listening", l.conn.LocalAddr())
}
func listenPacket(n, addr string) (net.PacketConn, error) {
if n == "mem" {
return nil, errors.New("TODO implement in-memory packet connection")
}
return net.ListenPacket(n, addr)
}
func (l *UTPListener) processPacket(p *packet, addr net.Addr) {
switch p.header.typ {
case st_data, st_fin, st_state, st_reset:
if c, ok := l.conns[p.header.id]; ok {
select {
case c.recvch <- p:
case <-c.recvchch:
}
}
case st_syn:
if l.closed {
return
}
sid := p.header.id + 1
if _, ok := l.conns[p.header.id]; !ok {
seq := rand.Intn(math.MaxUint16)
c := newUTPConn()
c.conn = l.conn
c.raddr = addr
c.rid = p.header.id + 1
c.sid = p.header.id
c.seq = uint16(seq)
c.ack = p.header.seq
c.diff = currentMicrosecond() - p.header.t
c.state = state_connected
c.closech = l.connch
c.recvbuf = newPacketBuffer(window_size, int(p.header.seq))
c.sendbuf = newPacketBuffer(window_size, seq)
go c.loop()
select {
case c.recvch <- p:
case <-c.recvchch:
}
l.conns[sid] = c
ulog.Printf(2, "Listener(%v): New incoming connection #%d from %v (alive: %d)", l.conn.LocalAddr(), sid, addr, len(l.conns))
l.accept <- c
}
}
}
func (l *UTPListener) Accept() (net.Conn, error) {
return l.AcceptUTP()
}
func (l *UTPListener) AcceptUTP() (*UTPConn, error) {
if l == nil || l.conn == nil {
return nil, syscall.EINVAL
}
if l.lasterr != nil {
return nil, l.lasterr
}
var timeout <-chan time.Time
if !l.deadline.IsZero() {
timeout = time.After(l.deadline.Sub(time.Now()))
}
select {
case conn := <-l.accept:
if conn == nil {
return nil, errors.New("use of closed network connection")
}
return conn, nil
case err := <-l.err:
l.lasterr = err
return nil, err
case <-timeout:
return nil, &timeoutError{}
}
}
func (l *UTPListener) Addr() net.Addr {
return &UTPAddr{Addr: l.conn.LocalAddr()}
}
func (l *UTPListener) Close() error {
if l == nil || l.conn == nil {
return syscall.EINVAL
}
l.closech <- 0
l.RawConn.Close()
return nil
}
func (l *UTPListener) SetDeadline(t time.Time) error {
if l == nil || l.conn == nil {
return syscall.EINVAL
}
l.deadline = t
return nil
}
type rawIncoming struct {
b []byte
addr net.Addr
}
type rawConn struct {
conn net.PacketConn
rdeadline, wdeadline time.Time
in chan rawIncoming
closed chan int
}
func newRawConn(conn net.PacketConn) *rawConn {
return &rawConn{
conn: conn,
in: make(chan rawIncoming, 100),
closed: make(chan int),
}
}
func (c *rawConn) ok() bool { return c != nil && c.conn != nil }
func (c *rawConn) ReadFrom(b []byte) (n int, addr net.Addr, err error) {
if !c.ok() {
return 0, nil, syscall.EINVAL
}
select {
case <-c.closed:
return 0, nil, errors.New("use of closed network connection")
default:
}
var timeout <-chan time.Time
if !c.rdeadline.IsZero() {
timeout = time.After(c.rdeadline.Sub(time.Now()))
}
select {
case r := <-c.in:
return copy(b, r.b), r.addr, nil
case <-timeout:
return 0, nil, &timeoutError{}
}
}
func (c *rawConn) WriteTo(b []byte, addr net.Addr) (n int, err error) {
if !c.ok() {
return 0, syscall.EINVAL
}
select {
case <-c.closed:
return 0, errors.New("use of closed network connection")
default:
}
return c.conn.WriteTo(b, addr)
}
func (c *rawConn) Close() error {
if !c.ok() {
return syscall.EINVAL
}
select {
case <-c.closed:
return errors.New("use of closed network connection")
default:
close(c.closed)
}
return nil
}
func (c *rawConn) LocalAddr() net.Addr {
if !c.ok() {
return nil
}
return c.conn.LocalAddr()
}
func (c *rawConn) SetDeadline(t time.Time) error {
if !c.ok() {
return syscall.EINVAL
}
if err := c.SetReadDeadline(t); err != nil {
return err
}
if err := c.SetWriteDeadline(t); err != nil {
return err
}
return nil
}
func (c *rawConn) SetReadDeadline(t time.Time) error {
if !c.ok() {
return syscall.EINVAL
}
c.rdeadline = t
return nil
}
func (c *rawConn) SetWriteDeadline(t time.Time) error {
if !c.ok() {
return syscall.EINVAL
}
c.wdeadline = t
return nil
}

50
Godeps/_workspace/src/github.com/h2so5/utp/log.go generated vendored Normal file
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@ -0,0 +1,50 @@
package utp
import (
"log"
"os"
"strconv"
)
type logger struct {
level int
}
var ulog *logger
func init() {
logenv := os.Getenv("GO_UTP_LOGGING")
var level int
if len(logenv) > 0 {
l, err := strconv.Atoi(logenv)
if err != nil {
log.Print("warning: GO_UTP_LOGGING must be numeric")
} else {
level = l
}
}
ulog = &logger{level}
}
func (l *logger) Print(level int, v ...interface{}) {
if l.level < level {
return
}
log.Print(v...)
}
func (l *logger) Printf(level int, format string, v ...interface{}) {
if l.level < level {
return
}
log.Printf(format, v...)
}
func (l *logger) Println(level int, v ...interface{}) {
if l.level < level {
return
}
log.Println(v...)
}

240
Godeps/_workspace/src/github.com/h2so5/utp/packet.go generated vendored Normal file
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@ -0,0 +1,240 @@
package utp
import (
"bytes"
"encoding/binary"
"fmt"
"io"
"sync"
)
type header struct {
typ, ver int
id uint16
t, diff, wnd uint32
seq, ack uint16
}
type extension struct {
typ int
payload []byte
}
type packet struct {
header header
ext []extension
payload []byte
}
type outgoingPacket struct {
typ int
ext []extension
payload []byte
}
func (p *packet) MarshalBinary() ([]byte, error) {
firstExt := ext_none
if len(p.ext) > 0 {
firstExt = p.ext[0].typ
}
buf := new(bytes.Buffer)
var beforeExt = []interface{}{
// | type | ver |
uint8(((byte(p.header.typ) << 4) & 0xF0) | (byte(p.header.ver) & 0xF)),
// | extension |
uint8(firstExt),
}
var afterExt = []interface{}{
// | connection_id |
uint16(p.header.id),
// | timestamp_microseconds |
uint32(p.header.t),
// | timestamp_difference_microseconds |
uint32(p.header.diff),
// | wnd_size |
uint32(p.header.wnd),
// | seq_nr |
uint16(p.header.seq),
// | ack_nr |
uint16(p.header.ack),
}
for _, v := range beforeExt {
err := binary.Write(buf, binary.BigEndian, v)
if err != nil {
return nil, err
}
}
if len(p.ext) > 0 {
for i, e := range p.ext {
next := ext_none
if i < len(p.ext)-1 {
next = p.ext[i+1].typ
}
var ext = []interface{}{
// | extension |
uint8(next),
// | len |
uint8(len(e.payload)),
}
for _, v := range ext {
err := binary.Write(buf, binary.BigEndian, v)
if err != nil {
return nil, err
}
}
_, err := buf.Write(e.payload)
if err != nil {
return nil, err
}
}
}
for _, v := range afterExt {
err := binary.Write(buf, binary.BigEndian, v)
if err != nil {
return nil, err
}
}
_, err := buf.Write(p.payload)
if err != nil {
return nil, err
}
return buf.Bytes(), nil
}
func (p *packet) UnmarshalBinary(data []byte) error {
p.ext = nil
buf := bytes.NewReader(data)
var tv, e uint8
var beforeExt = []interface{}{
// | type | ver |
(*uint8)(&tv),
// | extension |
(*uint8)(&e),
}
for _, v := range beforeExt {
err := binary.Read(buf, binary.BigEndian, v)
if err != nil {
return err
}
}
for e != ext_none {
currentExt := int(e)
var l uint8
var ext = []interface{}{
// | extension |
(*uint8)(&e),
// | len |
(*uint8)(&l),
}
for _, v := range ext {
err := binary.Read(buf, binary.BigEndian, v)
if err != nil {
return err
}
}
payload := make([]byte, l)
size, err := buf.Read(payload[:])
if err != nil {
return err
}
if size != len(payload) {
return io.EOF
}
p.ext = append(p.ext, extension{typ: currentExt, payload: payload})
}
var afterExt = []interface{}{
// | connection_id |
(*uint16)(&p.header.id),
// | timestamp_microseconds |
(*uint32)(&p.header.t),
// | timestamp_difference_microseconds |
(*uint32)(&p.header.diff),
// | wnd_size |
(*uint32)(&p.header.wnd),
// | seq_nr |
(*uint16)(&p.header.seq),
// | ack_nr |
(*uint16)(&p.header.ack),
}
for _, v := range afterExt {
err := binary.Read(buf, binary.BigEndian, v)
if err != nil {
return err
}
}
p.header.typ = int((tv >> 4) & 0xF)
p.header.ver = int(tv & 0xF)
l := buf.Len()
if l > 0 {
p.payload = p.payload[:l]
_, err := buf.Read(p.payload[:])
if err != nil {
return err
}
}
return nil
}
func (p packet) String() string {
var s string = fmt.Sprintf("[%d ", p.header.id)
switch p.header.typ {
case st_data:
s += "ST_DATA"
case st_fin:
s += "ST_FIN"
case st_state:
s += "ST_STATE"
case st_reset:
s += "ST_RESET"
case st_syn:
s += "ST_SYN"
}
s += fmt.Sprintf(" seq:%d ack:%d len:%d", p.header.seq, p.header.ack, len(p.payload))
s += "]"
return s
}
var globalPool packetPool
type packetPool struct {
root *packetPoolNode
mutex sync.Mutex
}
type packetPoolNode struct {
p *packet
next *packetPoolNode
}
func (o *packetPool) get() *packet {
o.mutex.Lock()
defer o.mutex.Unlock()
r := o.root
if r != nil {
o.root = o.root.next
return r.p
} else {
return &packet{
payload: make([]byte, 0, mss),
}
}
}
func (o *packetPool) put(p *packet) {
o.mutex.Lock()
defer o.mutex.Unlock()
o.root = &packetPoolNode{
p: p,
next: o.root,
}
}

3
Godeps/_workspace/src/github.com/h2so5/utp/ucat/.gitignore generated vendored Normal file
View File

@ -0,0 +1,3 @@
ucat
random
.trash/

34
Godeps/_workspace/src/github.com/h2so5/utp/ucat/Makefile generated vendored Normal file
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@ -0,0 +1,34 @@
# Run tests
testnames=simple
tests=$(addprefix test_, $(testnames))
trash=.trash/
all: ucat
test: clean ucat ${tests}
@echo ${tests}
@echo "*** tests passed ***"
# not sue why this doesn't work:
# test_%: test_%.sh
test_simple: test_simple.sh
mkdir -p ${trash}
@echo "*** running $@ ***"
./$@.sh
clean:
@echo "*** $@ ***"
-rm -r ${trash}
deps: random ucat
ucat:
go build
random:
@echo "*** installing $@ ***"
go get github.com/jbenet/go-random/random
go build -o random github.com/jbenet/go-random/random
.PHONY: clean ucat ${tests}

49
Godeps/_workspace/src/github.com/h2so5/utp/ucat/test_simple.sh generated vendored Normal file
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@ -0,0 +1,49 @@
#!/bin/sh
set -e # exit on error
# set -v # verbose
log() {
echo "--> $1"
}
test_send() {
file=$1_
count=$2
addr=localhost:8765
# generate random data
log "generating $count bytes of random data"
./random $count $RANDOM > ${file}expected
# dialer sends
log "sending from dialer"
./ucat -v $addr 2>&1 <${file}expected | sed "s/^/ dialer1: /" &
./ucat -v -l $addr 2>&1 >${file}actual1 | sed "s/^/listener1: /"
diff ${file}expected ${file}actual1
if test $? != 0; then
log "sending from dialer failed. compare with:\n"
log "diff ${file}expected ${file}actual1"
exit 1
fi
# listener sends
log "sending from listener"
./ucat -v -l $addr 2>&1 <${file}expected | sed "s/^/listener2: /" &
./ucat -v $addr 2>&1 >${file}actual2 | sed "s/^/ dialer2: /"
diff ${file}expected ${file}actual2
if test $? != 0; then
log "sending from listener failed. compare with:\n"
log "diff ${file}expected ${file}actual2"
exit 1
fi
echo rm ${file}{expected,actual1,actual2}
rm ${file}{expected,actual1,actual2}
return 0
}
test_send ".trash/1KB" 1024
test_send ".trash/1MB" 1048576
test_send ".trash/1GB" 1073741824

188
Godeps/_workspace/src/github.com/h2so5/utp/ucat/ucat.go generated vendored Normal file
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@ -0,0 +1,188 @@
// package ucat provides an implementation of netcat using the go utp package.
// It is meant to exercise the utp implementation.
// Usage:
// ucat [<local address>] <remote address>
// ucat -l <local address>
//
// Address format is: [host]:port
//
// Note that uTP's congestion control gives priority to tcp flows (web traffic),
// so you could use this ucat tool to transfer massive files without hogging
// all the bandwidth.
package main
import (
"flag"
"fmt"
"io"
"net"
"os"
"os/signal"
"syscall"
utp "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/h2so5/utp"
)
var verbose = false
// Usage prints out the usage of this module.
// Assumes flags use go stdlib flag pacakage.
var Usage = func() {
text := `ucat - uTP netcat in Go
Usage:
listen: %s [<local address>] <remote address>
dial: %s -l <local address>
Address format is Go's: [host]:port
`
fmt.Fprintf(os.Stderr, text, os.Args[0], os.Args[0])
flag.PrintDefaults()
}
type args struct {
listen bool
verbose bool
localAddr string
remoteAddr string
}
func parseArgs() args {
var a args
// setup + parse flags
flag.BoolVar(&a.listen, "listen", false, "listen for connections")
flag.BoolVar(&a.listen, "l", false, "listen for connections (short)")
flag.BoolVar(&a.verbose, "v", false, "verbose debugging")
flag.Usage = Usage
flag.Parse()
osArgs := flag.Args()
if len(osArgs) < 1 {
exit("")
}
if a.listen {
a.localAddr = osArgs[0]
} else {
if len(osArgs) > 1 {
a.localAddr = osArgs[0]
a.remoteAddr = osArgs[1]
} else {
a.remoteAddr = osArgs[0]
}
}
return a
}
func main() {
args := parseArgs()
verbose = args.verbose
var err error
if args.listen {
err = Listen(args.localAddr)
} else {
err = Dial(args.localAddr, args.remoteAddr)
}
if err != nil {
exit("%s", err)
}
}
func exit(format string, vals ...interface{}) {
if format != "" {
fmt.Fprintf(os.Stderr, "ucat error: "+format+"\n", vals...)
}
Usage()
os.Exit(1)
}
func log(format string, vals ...interface{}) {
if verbose {
fmt.Fprintf(os.Stderr, "ucat log: "+format+"\n", vals...)
}
}
// Listen listens and accepts one incoming uTP connection on a given port,
// and pipes all incoming data to os.Stdout.
func Listen(localAddr string) error {
l, err := utp.Listen("utp", localAddr)
if err != nil {
return err
}
log("listening at %s", l.Addr())
c, err := l.Accept()
if err != nil {
return err
}
log("accepted connection from %s", c.RemoteAddr())
// should be able to close listener here, but utp.Listener.Close
// closes all open connections.
defer l.Close()
netcat(c)
return c.Close()
}
// Dial connects to a remote address and pipes all os.Stdin to the remote end.
// If localAddr is set, uses it to Dial from.
func Dial(localAddr, remoteAddr string) error {
var laddr net.Addr
var err error
if localAddr != "" {
laddr, err = utp.ResolveUTPAddr("utp", localAddr)
if err != nil {
return fmt.Errorf("failed to resolve address %s", localAddr)
}
}
if laddr != nil {
log("dialing %s from %s", remoteAddr, laddr)
} else {
log("dialing %s", remoteAddr)
}
d := utp.Dialer{LocalAddr: laddr}
c, err := d.Dial("utp", remoteAddr)
if err != nil {
return err
}
log("connected to %s", c.RemoteAddr())
netcat(c)
return c.Close()
}
func netcat(c net.Conn) {
log("piping stdio to connection")
done := make(chan struct{})
go func() {
n, _ := io.Copy(c, os.Stdin)
log("sent %d bytes", n)
done <- struct{}{}
}()
go func() {
n, _ := io.Copy(os.Stdout, c)
log("received %d bytes", n)
done <- struct{}{}
}()
// wait until we exit.
sigc := make(chan os.Signal, 1)
signal.Notify(sigc, syscall.SIGHUP, syscall.SIGINT,
syscall.SIGTERM, syscall.SIGQUIT)
select {
case <-done:
case <-sigc:
}
}

29
Godeps/_workspace/src/github.com/h2so5/utp/utp.go generated vendored Normal file
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@ -0,0 +1,29 @@
package utp
import "time"
const (
version = 1
st_data = 0
st_fin = 1
st_state = 2
st_reset = 3
st_syn = 4
ext_none = 0
ext_selective_ack = 1
header_size = 20
mtu = 3200
mss = mtu - header_size
window_size = 100
reset_timeout = time.Second
)
type timeoutError struct{}
func (e *timeoutError) Error() string { return "i/o timeout" }
func (e *timeoutError) Timeout() bool { return true }
func (e *timeoutError) Temporary() bool { return true }

601
Godeps/_workspace/src/github.com/h2so5/utp/utp_test.go generated vendored Normal file
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@ -0,0 +1,601 @@
package utp
import (
"bytes"
"io"
"io/ioutil"
"math"
"math/rand"
"net"
"reflect"
"testing"
"time"
)
func init() {
rand.Seed(time.Now().Unix())
}
func TestReadWrite(t *testing.T) {
ln, err := Listen("utp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
raddr, err := ResolveUTPAddr("utp", ln.Addr().String())
if err != nil {
t.Fatal(err)
}
c, err := DialUTPTimeout("utp", nil, raddr, 1000*time.Millisecond)
if err != nil {
t.Fatal(err)
}
defer c.Close()
err = ln.SetDeadline(time.Now().Add(1000 * time.Millisecond))
if err != nil {
t.Fatal(err)
}
s, err := ln.Accept()
if err != nil {
t.Fatal(err)
}
ln.Close()
payload := []byte("Hello!")
_, err = c.Write(payload)
if err != nil {
t.Fatal(err)
}
err = s.SetDeadline(time.Now().Add(1000 * time.Millisecond))
if err != nil {
t.Fatal(err)
}
var buf [256]byte
l, err := s.Read(buf[:])
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(payload, buf[:l]) {
t.Errorf("expected payload of %v; got %v", payload, buf[:l])
}
payload2 := []byte("World!")
_, err = s.Write(payload2)
if err != nil {
t.Fatal(err)
}
err = c.SetDeadline(time.Now().Add(1000 * time.Millisecond))
if err != nil {
t.Fatal(err)
}
l, err = c.Read(buf[:])
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(payload2, buf[:l]) {
t.Errorf("expected payload of %v; got %v", payload2, buf[:l])
}
}
func TestRawReadWrite(t *testing.T) {
ln, err := Listen("utp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
raddr, err := net.ResolveUDPAddr("udp", ln.Addr().String())
if err != nil {
t.Fatal(err)
}
c, err := net.DialUDP("udp", nil, raddr)
if err != nil {
t.Fatal(err)
}
defer c.Close()
payload := []byte("Hello!")
_, err = c.Write(payload)
if err != nil {
t.Fatal(err)
}
var buf [256]byte
n, addr, err := ln.RawConn.ReadFrom(buf[:])
if !bytes.Equal(payload, buf[:n]) {
t.Errorf("expected payload of %v; got %v", payload, buf[:n])
}
if addr.String() != c.LocalAddr().String() {
t.Errorf("expected addr of %v; got %v", c.LocalAddr(), addr.String())
}
}
func TestLongReadWriteC2S(t *testing.T) {
ln, err := Listen("utp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
raddr, err := ResolveUTPAddr("utp", ln.Addr().String())
if err != nil {
t.Fatal(err)
}
c, err := DialUTPTimeout("utp", nil, raddr, 1000*time.Millisecond)
if err != nil {
t.Fatal(err)
}
defer c.Close()
err = ln.SetDeadline(time.Now().Add(1000 * time.Millisecond))
if err != nil {
t.Fatal(err)
}
s, err := ln.Accept()
if err != nil {
t.Fatal(err)
}
defer s.Close()
ln.Close()
var payload [10485760]byte
for i := range payload {
payload[i] = byte(rand.Int())
}
rch := make(chan []byte)
ech := make(chan error, 2)
go func() {
defer c.Close()
_, err := c.Write(payload[:])
if err != nil {
ech <- err
}
}()
go func() {
b, err := ioutil.ReadAll(s)
if err != nil {
ech <- err
rch <- nil
} else {
ech <- nil
rch <- b
}
}()
err = <-ech
if err != nil {
t.Fatal(err)
}
r := <-rch
if r == nil {
return
}
if !bytes.Equal(r, payload[:]) {
t.Errorf("expected payload of %d; got %d", len(payload[:]), len(r))
}
}
func TestLongReadWriteS2C(t *testing.T) {
ln, err := Listen("utp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
raddr, err := ResolveUTPAddr("utp", ln.Addr().String())
if err != nil {
t.Fatal(err)
}
c, err := DialUTPTimeout("utp", nil, raddr, 1000*time.Millisecond)
if err != nil {
t.Fatal(err)
}
defer c.Close()
err = ln.SetDeadline(time.Now().Add(1000 * time.Millisecond))
if err != nil {
t.Fatal(err)
}
s, err := ln.Accept()
if err != nil {
t.Fatal(err)
}
defer s.Close()
ln.Close()
var payload [10485760]byte
for i := range payload {
payload[i] = byte(rand.Int())
}
rch := make(chan []byte)
ech := make(chan error, 2)
go func() {
defer s.Close()
_, err := s.Write(payload[:])
if err != nil {
ech <- err
}
}()
go func() {
b, err := ioutil.ReadAll(c)
if err != nil {
ech <- err
rch <- nil
} else {
ech <- nil
rch <- b
}
}()
err = <-ech
if err != nil {
t.Fatal(err)
}
r := <-rch
if r == nil {
return
}
if !bytes.Equal(r, payload[:]) {
t.Errorf("expected payload of %d; got %d", len(payload[:]), len(r))
}
}
func TestAccept(t *testing.T) {
ln, err := Listen("utp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
c, err := DialUTPTimeout("utp", nil, ln.Addr().(*UTPAddr), 200*time.Millisecond)
if err != nil {
t.Fatal(err)
}
defer c.Close()
err = ln.SetDeadline(time.Now().Add(100 * time.Millisecond))
_, err = ln.Accept()
if err != nil {
t.Fatal(err)
}
}
func TestAcceptDeadline(t *testing.T) {
ln, err := Listen("utp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
err = ln.SetDeadline(time.Now().Add(time.Millisecond))
_, err = ln.Accept()
if err == nil {
t.Fatal("Accept should failed")
}
}
func TestAcceptClosedListener(t *testing.T) {
ln, err := Listen("utp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
err = ln.Close()
if err != nil {
t.Fatal(err)
}
_, err = ln.Accept()
if err == nil {
t.Fatal("Accept should failed")
}
_, err = ln.Accept()
if err == nil {
t.Fatal("Accept should failed")
}
}
func TestDialer(t *testing.T) {
ln, err := Listen("utp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
d := Dialer{}
c, err := d.Dial("utp", ln.Addr().String())
if err != nil {
t.Fatal(err)
}
defer c.Close()
}
func TestDialerAddrs(t *testing.T) {
ln, err := Listen("utp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
laddr, err := ResolveUTPAddr("utp", "127.0.0.1:45678")
if err != nil {
t.Fatal(err)
}
d := Dialer{LocalAddr: laddr}
c1, err := d.Dial("utp", ln.Addr().String())
if err != nil {
t.Fatal(err)
}
defer c1.Close()
c2, err := ln.Accept()
if err != nil {
t.Fatal(err)
}
defer c2.Close()
eq := func(a, b net.Addr) bool {
return a.String() == b.String()
}
if !eq(d.LocalAddr, c2.RemoteAddr()) {
t.Fatal("dialer.LocalAddr not equal to c2.RemoteAddr ")
}
if !eq(c1.LocalAddr(), c2.RemoteAddr()) {
t.Fatal("c1.LocalAddr not equal to c2.RemoteAddr ")
}
if !eq(c2.LocalAddr(), c1.RemoteAddr()) {
t.Fatal("c2.LocalAddr not equal to c1.RemoteAddr ")
}
}
func TestDialerTimeout(t *testing.T) {
timeout := time.Millisecond * 200
d := Dialer{Timeout: timeout}
done := make(chan struct{})
go func() {
_, err := d.Dial("utp", "127.0.0.1:34567")
if err == nil {
t.Fatal("should not connect")
}
done <- struct{}{}
}()
select {
case <-time.After(timeout * 2):
t.Fatal("should have ended already")
case <-done:
}
}
func TestPacketBinary(t *testing.T) {
h := header{
typ: st_fin,
ver: version,
id: 100,
t: 50000,
diff: 10000,
wnd: 65535,
seq: 100,
ack: 200,
}
e := []extension{
extension{
typ: ext_selective_ack,
payload: []byte{0, 1, 0, 1},
},
extension{
typ: ext_selective_ack,
payload: []byte{100, 0, 200, 0},
},
}
p := packet{
header: h,
ext: e,
payload: []byte("abcdefg"),
}
b, err := p.MarshalBinary()
if err != nil {
t.Fatal(err)
}
p2 := packet{payload: make([]byte, 0, mss)}
err = p2.UnmarshalBinary(b)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(p, p2) {
t.Errorf("expected packet of %v; got %v", p, p2)
}
}
func TestUnmarshalShortPacket(t *testing.T) {
b := make([]byte, 18)
p := packet{}
err := p.UnmarshalBinary(b)
if err == nil {
t.Fatal("UnmarshalBinary should fail")
} else if err != io.EOF {
t.Fatal(err)
}
}
func TestWriteOnClosedChannel(t *testing.T) {
ln, err := Listen("utp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
c, err := DialUTPTimeout("utp", nil, ln.Addr().(*UTPAddr), 200*time.Millisecond)
if err != nil {
t.Fatal(err)
}
go func() {
for {
_, err := c.Write([]byte{100})
if err != nil {
return
}
}
}()
c.Close()
}
func TestReadOnClosedChannel(t *testing.T) {
ln, err := Listen("utp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
c, err := DialUTPTimeout("utp", nil, ln.Addr().(*UTPAddr), 200*time.Millisecond)
if err != nil {
t.Fatal(err)
}
go func() {
for {
var buf [16]byte
_, err := c.Read(buf[:])
if err != nil {
return
}
}
}()
c.Close()
}
func TestPacketBuffer(t *testing.T) {
size := 12
b := newPacketBuffer(12, 1)
if b.space() != size {
t.Errorf("expected space == %d; got %d", size, b.space())
}
for i := 1; i <= size; i++ {
b.push(&packet{header: header{seq: uint16(i)}})
}
if b.space() != 0 {
t.Errorf("expected space == 0; got %d", b.space())
}
a := []byte{255, 7}
ack := b.generateSelectiveACK()
if !bytes.Equal(a, ack) {
t.Errorf("expected ack == %v; got %v", a, ack)
}
err := b.push(&packet{header: header{seq: 15}})
if err == nil {
t.Fatal("push should fail")
}
all := b.all()
if len(all) != size {
t.Errorf("expected %d packets sequence; got %d", size, len(all))
}
f := b.fetch(6)
if f == nil {
t.Fatal("fetch should not fail")
}
b.compact()
err = b.push(&packet{header: header{seq: 15}})
if err != nil {
t.Fatal(err)
}
err = b.push(&packet{header: header{seq: 17}})
if err != nil {
t.Fatal(err)
}
for i := 7; i <= size; i++ {
f := b.fetch(uint16(i))
if f == nil {
t.Fatal("fetch should not fail")
}
}
a = []byte{128, 2}
ack = b.generateSelectiveACK()
if !bytes.Equal(a, ack) {
t.Errorf("expected ack == %v; got %v", a, ack)
}
all = b.all()
if len(all) != 2 {
t.Errorf("expected 2 packets sequence; got %d", len(all))
}
b.compact()
if b.space() != 9 {
t.Errorf("expected space == 9; got %d", b.space())
}
ack = b.generateSelectiveACK()
b.processSelectiveACK(ack)
all = b.all()
if len(all) != 1 {
t.Errorf("expected size == 1; got %d", len(all))
}
}
func TestPacketBufferBoundary(t *testing.T) {
begin := math.MaxUint16 - 3
b := newPacketBuffer(12, begin)
for i := begin; i != 5; i = (i + 1) % (math.MaxUint16 + 1) {
err := b.push(&packet{header: header{seq: uint16(i)}})
if err != nil {
t.Fatal(err)
}
}
}
func TestTimedBufferNode(t *testing.T) {
b := timedBuffer{d: time.Millisecond * 100}
b.push(100)
b.push(200)
time.Sleep(time.Millisecond * 200)
b.push(300)
b.push(400)
m := b.min()
if m != 300 {
t.Errorf("expected min == 300; got %d", m)
}
}

11
Godeps/_workspace/src/github.com/jbenet/commander/AUTHORS generated vendored
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@ -1,11 +0,0 @@
# This is the official list of Go-Commander authors for copyright purposes.
# This file is distinct from the CONTRIBUTORS files.
# See the latter for an explanation.
# Names should be added to this file as
# Name or Organization <email address>
# The email address is not required for organizations.
# Please keep the list sorted.
Google Inc

31
Godeps/_workspace/src/github.com/jbenet/commander/CONTRIBUTORS generated vendored
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@ -1,31 +0,0 @@
# This is the official list of people who can contribute
# (and typically have contributed) code to the Go-Commander repository.
# The AUTHORS file lists the copyright holders; this file
# lists people. For example, Google employees are listed here
# but not in AUTHORS, because Google holds the copyright.
#
# The submission process automatically checks to make sure
# that people submitting code are listed in this file (by email address).
#
# Names should be added to this file only after verifying that
# the individual or the individual's organization has agreed to
# the appropriate Contributor License Agreement, found here:
#
# http://code.google.com/legal/individual-cla-v1.0.html
# http://code.google.com/legal/corporate-cla-v1.0.html
#
# The agreement for individuals can be filled out on the web.
#
# When adding J Random Contributor's name to this file,
# either J's name or J's organization's name should be
# added to the AUTHORS file, depending on whether the
# individual or corporate CLA was used.
# Names should be added to this file like so:
# Name <email address>
# Please keep the list sorted.
Juan Batiz-Benet <juan@benet.ai>
Sebastien Binet <seb.binet@gmail.com>
Yves Junqueira <yves.junqueira@gmail.com>

27
Godeps/_workspace/src/github.com/jbenet/commander/LICENSE generated vendored
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@ -1,27 +0,0 @@
Copyright (c) 2012 The Go-Commander Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

107
Godeps/_workspace/src/github.com/jbenet/commander/README.md generated vendored
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@ -1,107 +0,0 @@
commander
============
[![Build Status](https://drone.io/github.com/gonuts/commander/status.png)](https://drone.io/github.com/gonuts/commander/latest)
``commander`` is a spin off of [golang](http://golang.org) ``go tool`` infrastructure to provide commands and sub-commands.
A ``commander.Command`` has a ``Subcommands`` field holding ``[]*commander.Command`` subcommands, referenced by name from the command line.
So a ``Command`` can have sub commands.
So you can have, _e.g._:
```sh
$ mycmd action1 [options...]
$ mycmd subcmd1 action1 [options...]
```
Example provided by:
- [hwaf](https://github.com/hwaf/hwaf)
- [examples/my-cmd](examples/my-cmd)
## Documentation
Is available on [godoc](http://godoc.org/github.com/gonuts/commander)
## Installation
Is performed with the usual:
```sh
$ go get github.com/gonuts/commander
```
## Example
See the simple ``my-cmd`` example command for how this all hangs
together [there](http://github.com/gonuts/commander/blob/master/examples/my-cmd/main.go):
```sh
$ my-cmd cmd1
my-cmd-cmd1: hello from cmd1 (quiet=true)
$ my-cmd cmd1 -q
my-cmd-cmd1: hello from cmd1 (quiet=true)
$ my-cmd cmd1 -q=0
my-cmd-cmd1: hello from cmd1 (quiet=false)
$ my-cmd cmd2
my-cmd-cmd2: hello from cmd2 (quiet=true)
$ my-cmd subcmd1 cmd1
my-cmd-subcmd1-cmd1: hello from subcmd1-cmd1 (quiet=true)
$ my-cmd subcmd1 cmd2
my-cmd-subcmd1-cmd2: hello from subcmd1-cmd2 (quiet=true)
$ my-cmd subcmd2 cmd1
my-cmd-subcmd2-cmd1: hello from subcmd2-cmd1 (quiet=true)
$ my-cmd subcmd2 cmd2
my-cmd-subcmd2-cmd2: hello from subcmd2-cmd2 (quiet=true)
$ my-cmd help
Usage:
my-cmd command [arguments]
The commands are:
cmd1 runs cmd1 and exits
cmd2 runs cmd2 and exits
subcmd1 subcmd1 subcommand. does subcmd1 thingies
subcmd2 subcmd2 subcommand. does subcmd2 thingies
Use "my-cmd help [command]" for more information about a command.
Additional help topics:
Use "my-cmd help [topic]" for more information about that topic.
$ my-cmd help subcmd1
Usage:
subcmd1 command [arguments]
The commands are:
cmd1 runs cmd1 and exits
cmd2 runs cmd2 and exits
Use "subcmd1 help [command]" for more information about a command.
Additional help topics:
Use "subcmd1 help [topic]" for more information about that topic.
```
## TODO
- automatically generate the bash/zsh/csh autocompletion lists
- automatically generate Readme examples text
- test cases

358
Godeps/_workspace/src/github.com/jbenet/commander/commands.go generated vendored
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@ -1,358 +0,0 @@
// Copyright 2012 The Go-Commander Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//
// Based on the original work by The Go Authors:
// Copyright 2011 The Go Authors. All rights reserved.
// commander helps creating command line programs whose arguments are flags,
// commands and subcommands.
package commander
import (
"bytes"
"fmt"
"io"
"os"
"os/exec"
"sort"
"strings"
"text/template"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/gonuts/flag"
)
// UsageSection differentiates between sections in the usage text.
type Listing int
const (
CommandsList = iota
HelpTopicsList
Unlisted
)
// A Command is an implementation of a subcommand.
type Command struct {
// UsageLine is the short usage message.
// The first word in the line is taken to be the command name.
UsageLine string
// Short is the short description line shown in command lists.
Short string
// Long is the long description shown in the 'help <this-command>' output.
Long string
// List reports which list to show this command in Usage and Help.
// Choose between {CommandsList (default), HelpTopicsList, Unlisted}
List Listing
// Run runs the command.
// The args are the arguments after the command name.
Run func(cmd *Command, args []string) error
// Flag is a set of flags specific to this command.
Flag flag.FlagSet
// CustomFlags indicates that the command will do its own
// flag parsing.
CustomFlags bool
// Subcommands are dispatched from this command
Subcommands []*Command
// Parent command, nil for root.
Parent *Command
// UsageTemplate formats the usage (short) information displayed to the user
// (leave empty for default)
UsageTemplate string
// HelpTemplate formats the help (long) information displayed to the user
// (leave empty for default)
HelpTemplate string
// Stdout and Stderr by default are os.Stdout and os.Stderr, but you can
// point them at any io.Writer
Stdout io.Writer
Stderr io.Writer
}
// Name returns the command's name: the first word in the usage line.
func (c *Command) Name() string {
name := c.UsageLine
i := strings.Index(name, " ")
if i >= 0 {
name = name[:i]
}
return name
}
// Usage prints the usage details to the standard error output.
func (c *Command) Usage() {
c.usage()
}
// FlagOptions returns the flag's options as a string
func (c *Command) FlagOptions() string {
var buf bytes.Buffer
c.Flag.SetOutput(&buf)
c.Flag.PrintDefaults()
str := string(buf.Bytes())
if len(str) > 0 {
return fmt.Sprintf("\nOptions:\n%s", str)
}
return ""
}
// Runnable reports whether the command can be run; otherwise
// it is a documentation pseudo-command such as importpath.
func (c *Command) Runnable() bool {
return c.Run != nil
}
// Type to allow us to use sort.Sort on a slice of Commands
type CommandSlice []*Command
func (c CommandSlice) Len() int {
return len(c)
}
func (c CommandSlice) Less(i, j int) bool {
return c[i].Name() < c[j].Name()
}
func (c CommandSlice) Swap(i, j int) {
c[i], c[j] = c[j], c[i]
}
// Sort the commands
func (c *Command) SortCommands() {
sort.Sort(CommandSlice(c.Subcommands))
}
// Init the command
func (c *Command) init() {
if c.Parent != nil {
return // already initialized.
}
// setup strings
if len(c.UsageLine) < 1 {
c.UsageLine = Defaults.UsageLine
}
if len(c.UsageTemplate) < 1 {
c.UsageTemplate = Defaults.UsageTemplate
}
if len(c.HelpTemplate) < 1 {
c.HelpTemplate = Defaults.HelpTemplate
}
if c.Stderr == nil {
c.Stderr = os.Stderr
}
if c.Stdout == nil {
c.Stdout = os.Stdout
}
// init subcommands
for _, cmd := range c.Subcommands {
cmd.init()
}
// init hierarchy...
for _, cmd := range c.Subcommands {
cmd.Parent = c
}
}
// Dispatch executes the command using the provided arguments.
// If a subcommand exists matching the first argument, it is dispatched.
// Otherwise, the command's Run function is called.
func (c *Command) Dispatch(args []string) error {
if c == nil {
return fmt.Errorf("Called Run() on a nil Command")
}
// Ensure command is initialized.
c.init()
// First, try a sub-command
if len(args) > 0 {
for _, cmd := range c.Subcommands {
n := cmd.Name()
if n == args[0] {
return cmd.Dispatch(args[1:])
}
}
// help is builtin (but after, to allow overriding)
if args[0] == "help" {
return c.help(args[1:])
}
// then, try out an external binary (git-style)
bin, err := exec.LookPath(c.FullName() + "-" + args[0])
if err == nil {
cmd := exec.Command(bin, args[1:]...)
cmd.Stdin = os.Stdin
cmd.Stdout = c.Stdout
cmd.Stderr = c.Stderr
return cmd.Run()
}
}
// then, try running this command
if c.Runnable() {
if !c.CustomFlags {
var err = error(nil)
c.Flag.Usage = func() {
c.Usage()
err = fmt.Errorf("Failed to parse flags.")
}
c.Flag.Parse(args)
if err != nil {
return err
}
args = c.Flag.Args()
}
return c.Run(c, args)
}
// TODO: try an alias
//...
// Last, print usage
if err := c.usage(); err != nil {
return err
}
return nil
}
func (c *Command) usage() error {
// c.SortCommands()
err := tmpl(c.Stderr, c.UsageTemplate, c)
if err != nil {
fmt.Println(err)
}
return err
}
// help implements the 'help' command.
func (c *Command) help(args []string) error {
// help exactly for this command?
if len(args) == 0 {
if len(c.Long) > 0 {
return tmpl(c.Stdout, c.HelpTemplate, c)
} else {
return c.usage()
}
}
arg := args[0]
// is this help for a subcommand?
for _, cmd := range c.Subcommands {
n := cmd.Name()
// strip out "<parent>-"" name
if strings.HasPrefix(n, c.Name()+"-") {
n = n[len(c.Name()+"-"):]
}
if n == arg {
return cmd.help(args[1:])
}
}
return fmt.Errorf("Unknown help topic %#q. Run '%v help'.\n", arg, c.Name())
}
func (c *Command) MaxLen() (res int) {
res = 0
for _, cmd := range c.Subcommands {
i := len(cmd.Name())
if i > res {
res = i
}
}
return
}
// ColFormat returns the column header size format for printing in the template
func (c *Command) ColFormat() string {
sz := c.MaxLen()
if sz < 11 {
sz = 11
}
return fmt.Sprintf("%%-%ds", sz)
}
// FullName returns the full name of the command, prefixed with parent commands
func (c *Command) FullName() string {
n := c.Name()
if c.Parent != nil {
n = c.Parent.FullName() + "-" + n
}
return n
}
// FullSpacedName returns the full name of the command, with ' ' instead of '-'
func (c *Command) FullSpacedName() string {
n := c.Name()
if c.Parent != nil {
n = c.Parent.FullSpacedName() + " " + n
}
return n
}
func (c *Command) SubcommandList(list Listing) []*Command {
var cmds []*Command
for _, cmd := range c.Subcommands {
if cmd.List == list {
cmds = append(cmds, cmd)
}
}
return cmds
}
var Defaults = Command{
UsageTemplate: `{{if .Runnable}}Usage: {{if .Parent}}{{.Parent.FullSpacedName}}{{end}} {{.UsageLine}}
{{else}}{{.FullSpacedName}} - {{end}}{{.Short}}
{{if commandList}}Commands:
{{range commandList}}
{{.Name | printf (colfmt)}} {{.Short}}{{end}}
Use "{{.Name}} help <command>" for more information about a command.
{{end}}{{.FlagOptions}}{{if helpList}}
Additional help topics:
{{range helpList}}
{{.Name | printf (colfmt)}} {{.Short}}{{end}}
Use "{{.Name}} help <topic>" for more information about that topic.
{{end}}`,
HelpTemplate: `{{if .Runnable}}Usage: {{if .Parent}}{{.Parent.FullSpacedName}}{{end}} {{.UsageLine}}
{{end}}{{.Long | trim}}
{{.FlagOptions}}
`,
}
// tmpl executes the given template text on data, writing the result to w.
func tmpl(w io.Writer, text string, data interface{}) error {
t := template.New("top")
t.Funcs(template.FuncMap{
"trim": strings.TrimSpace,
"colfmt": func() string { return data.(*Command).ColFormat() },
"commandList": func() []*Command { return data.(*Command).SubcommandList(CommandsList) },
"helpList": func() []*Command { return data.(*Command).SubcommandList(HelpTopicsList) },
})
template.Must(t.Parse(text))
return t.Execute(w, data)
}

34
Godeps/_workspace/src/github.com/jbenet/commander/examples/my-cmd/cmd_cmd1.go generated vendored
View File

@ -1,34 +0,0 @@
package main
import (
"fmt"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/gonuts/flag"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/commander"
)
var cmd_cmd1 = &commander.Command{
Run: ex_run_cmd_cmd1,
UsageLine: "cmd1 [options]",
Short: "runs cmd1 and exits",
Long: `
runs cmd1 and exits.
ex:
$ my-cmd cmd1
`,
Flag: *flag.NewFlagSet("my-cmd-cmd1", flag.ExitOnError),
}
func init() {
cmd_cmd1.Flag.Bool("q", true, "only print error and warning messages, all other output will be suppressed")
}
func ex_run_cmd_cmd1(cmd *commander.Command, args []string) error {
name := "my-cmd-" + cmd.Name()
quiet := cmd.Flag.Lookup("q").Value.Get().(bool)
fmt.Printf("%s: hello from cmd1 (quiet=%v)\n", name, quiet)
return nil
}
// EOF

34
Godeps/_workspace/src/github.com/jbenet/commander/examples/my-cmd/cmd_cmd2.go generated vendored
View File

@ -1,34 +0,0 @@
package main
import (
"fmt"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/gonuts/flag"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/commander"
)
func ex_make_cmd_cmd2() *commander.Command {
cmd := &commander.Command{
Run: ex_run_cmd_cmd2,
UsageLine: "cmd2 [options]",
Short: "runs cmd2 and exits",
Long: `
runs cmd2 and exits.
ex:
$ my-cmd cmd2
`,
Flag: *flag.NewFlagSet("my-cmd-cmd2", flag.ExitOnError),
}
cmd.Flag.Bool("q", true, "only print error and warning messages, all other output will be suppressed")
return cmd
}
func ex_run_cmd_cmd2(cmd *commander.Command, args []string) error {
name := "my-cmd-" + cmd.Name()
quiet := cmd.Flag.Lookup("q").Value.Get().(bool)
fmt.Printf("%s: hello from cmd2 (quiet=%v)\n", name, quiet)
return nil
}
// EOF

18
Godeps/_workspace/src/github.com/jbenet/commander/examples/my-cmd/cmd_subcmd1.go generated vendored
View File

@ -1,18 +0,0 @@
package main
import (
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/gonuts/flag"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/commander"
)
var cmd_subcmd1 = &commander.Command{
UsageLine: "subcmd1 <command>",
Short: "subcmd1 subcommand. does subcmd1 thingies",
Subcommands: []*commander.Command{
cmd_subcmd1_cmd1,
cmd_subcmd1_cmd2,
},
Flag: *flag.NewFlagSet("my-cmd-subcmd1", flag.ExitOnError),
}
// EOF

34
Godeps/_workspace/src/github.com/jbenet/commander/examples/my-cmd/cmd_subcmd1_cmd1.go generated vendored
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@ -1,34 +0,0 @@
package main
import (
"fmt"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/gonuts/flag"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/commander"
)
var cmd_subcmd1_cmd1 = &commander.Command{
Run: ex_run_cmd_subcmd1_cmd1,
UsageLine: "cmd1 [options]",
Short: "runs cmd1 and exits",
Long: `
runs cmd1 and exits.
ex:
$ my-cmd subcmd1 cmd1
`,
Flag: *flag.NewFlagSet("my-cmd-subcmd1-cmd1", flag.ExitOnError),
}
func init() {
cmd_subcmd1_cmd1.Flag.Bool("q", true, "only print error and warning messages, all other output will be suppressed")
}
func ex_run_cmd_subcmd1_cmd1(cmd *commander.Command, args []string) error {
name := "my-cmd-subcmd1-" + cmd.Name()
quiet := cmd.Flag.Lookup("q").Value.Get().(bool)
fmt.Printf("%s: hello from subcmd1-cmd1 (quiet=%v)\n", name, quiet)
return nil
}
// EOF

34
Godeps/_workspace/src/github.com/jbenet/commander/examples/my-cmd/cmd_subcmd1_cmd2.go generated vendored
View File

@ -1,34 +0,0 @@
package main
import (
"fmt"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/gonuts/flag"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/commander"
)
var cmd_subcmd1_cmd2 = &commander.Command{
Run: ex_run_cmd_subcmd1_cmd2,
UsageLine: "cmd2 [options]",
Short: "runs cmd2 and exits",
Long: `
runs cmd2 and exits.
ex:
$ my-cmd subcmd1 cmd2
`,
Flag: *flag.NewFlagSet("my-cmd-subcmd1-cmd2", flag.ExitOnError),
}
func init() {
cmd_subcmd1_cmd2.Flag.Bool("q", true, "only print error and warning messages, all other output will be suppressed")
}
func ex_run_cmd_subcmd1_cmd2(cmd *commander.Command, args []string) error {
name := "my-cmd-subcmd1-" + cmd.Name()
quiet := cmd.Flag.Lookup("q").Value.Get().(bool)
fmt.Printf("%s: hello from subcmd1-cmd2 (quiet=%v)\n", name, quiet)
return nil
}
// EOF

22
Godeps/_workspace/src/github.com/jbenet/commander/examples/my-cmd/cmd_subcmd2.go generated vendored
View File

@ -1,22 +0,0 @@
package main
import (
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/gonuts/flag"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/commander"
)
func ex_make_cmd_subcmd2() *commander.Command {
cmd := &commander.Command{
UsageLine: "subcmd2",
Short: "subcmd2 subcommand. does subcmd2 thingies (help list)",
List: commander.HelpTopicsList,
Subcommands: []*commander.Command{
ex_make_cmd_subcmd2_cmd1(),
ex_make_cmd_subcmd2_cmd2(),
},
Flag: *flag.NewFlagSet("my-cmd-subcmd2", flag.ExitOnError),
}
return cmd
}
// EOF

34
Godeps/_workspace/src/github.com/jbenet/commander/examples/my-cmd/cmd_subcmd2_cmd1.go generated vendored
View File

@ -1,34 +0,0 @@
package main
import (
"fmt"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/gonuts/flag"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/commander"
)
func ex_make_cmd_subcmd2_cmd1() *commander.Command {
cmd := &commander.Command{
Run: ex_run_cmd_subcmd2_cmd1,
UsageLine: "cmd1 [options]",
Short: "runs cmd1 and exits",
Long: `
runs cmd1 and exits.
ex:
$ my-cmd subcmd2 cmd1
`,
Flag: *flag.NewFlagSet("my-cmd-subcmd2-cmd1", flag.ExitOnError),
}
cmd.Flag.Bool("q", true, "only print error and warning messages, all other output will be suppressed")
return cmd
}
func ex_run_cmd_subcmd2_cmd1(cmd *commander.Command, args []string) error {
name := "my-cmd-subcmd2-" + cmd.Name()
quiet := cmd.Flag.Lookup("q").Value.Get().(bool)
fmt.Printf("%s: hello from subcmd2-cmd1 (quiet=%v)\n", name, quiet)
return nil
}
// EOF

34
Godeps/_workspace/src/github.com/jbenet/commander/examples/my-cmd/cmd_subcmd2_cmd2.go generated vendored
View File

@ -1,34 +0,0 @@
package main
import (
"fmt"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/gonuts/flag"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/commander"
)
func ex_make_cmd_subcmd2_cmd2() *commander.Command {
cmd := &commander.Command{
Run: ex_run_cmd_subcmd2_cmd2,
UsageLine: "cmd2 [options]",
Short: "runs cmd2 and exits",
Long: `
runs cmd2 and exits.
ex:
$ my-cmd subcmd2 cmd2
`,
Flag: *flag.NewFlagSet("my-cmd-subcmd2-cmd2", flag.ExitOnError),
}
cmd.Flag.Bool("q", true, "only print error and warning messages, all other output will be suppressed")
return cmd
}
func ex_run_cmd_subcmd2_cmd2(cmd *commander.Command, args []string) error {
name := "my-cmd-subcmd2-" + cmd.Name()
quiet := cmd.Flag.Lookup("q").Value.Get().(bool)
fmt.Printf("%s: hello from subcmd2-cmd2 (quiet=%v)\n", name, quiet)
return nil
}
// EOF

33
Godeps/_workspace/src/github.com/jbenet/commander/examples/my-cmd/main.go generated vendored
View File

@ -1,33 +0,0 @@
package main
import (
"fmt"
"os"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/commander"
)
var g_cmd = &commander.Command{
UsageLine: os.Args[0] + " does cool things",
}
func init() {
g_cmd.Subcommands = []*commander.Command{
cmd_cmd1,
ex_make_cmd_cmd2(),
cmd_subcmd1,
ex_make_cmd_subcmd2(),
}
}
func main() {
err := g_cmd.Dispatch(os.Args[1:])
if err != nil {
fmt.Printf("%v\n", err)
os.Exit(1)
}
return
}
// EOF

18
Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net/Godeps/Godeps.json generated vendored Normal file
View File

@ -0,0 +1,18 @@
{
"ImportPath": "github.com/jbenet/go-multiaddr-net",
"GoVersion": "go1.3",
"Packages": [
"./..."
],
"Deps": [
{
"ImportPath": "github.com/h2so5/utp",
"Rev": "654d875bb65e96729678180215cf080fe2810371"
},
{
"ImportPath": "github.com/jbenet/go-multiaddr",
"Comment": "0.1.2-30-g99cf3ed",
"Rev": "99cf3edc711751cf7b43505fac0e3913f6b9a75c"
}
]
}

5
Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net/Godeps/Readme generated vendored Normal file
View File

@ -0,0 +1,5 @@
This directory tree is generated automatically by godep.
Please do not edit.
See https://github.com/tools/godep for more information.

21
Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net/LICENSE generated vendored Normal file
View File

@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2014 Juan Batiz-Benet
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

16
Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net/Makefile generated vendored Normal file
View File

@ -0,0 +1,16 @@
all: install
godep:
go get github.com/tools/godep
# saves/vendors third-party dependencies to Godeps/_workspace
# -r flag rewrites import paths to use the vendored path
# ./... performs operation on all packages in tree
vendor: godep
godep save -r ./...
install: dep
cd multiaddr && go install
dep:
cd multiaddr && go get ./...

4
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net/README.md → Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net/README.md generated vendored
View File

@ -1,11 +1,11 @@
# multiaddr/net - Multiaddr friendly net
Package multiaddr/net provides Multiaddr specific versions of common
Package multiaddr/net provides [Multiaddr](http://github.com/jbenet/go-multiaddr) specific versions of common
functions in stdlib's net package. This means wrappers of
standard net symbols like net.Dial and net.Listen, as well
as conversion to/from net.Addr.
Docs:
- `multiaddr/net`: https://godoc.org/github.com/jbenet/go-multiaddr/net
- `multiaddr/net`: https://godoc.org/github.com/jbenet/go-multiaddr-net
- `multiaddr`: https://godoc.org/github.com/jbenet/go-multiaddr

34
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net/convert.go → Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net/convert.go generated vendored
View File

@ -5,6 +5,7 @@ import (
"net"
"strings"
utp "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/h2so5/utp"
ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
)
@ -55,6 +56,33 @@ func FromNetAddr(a net.Addr) (ma.Multiaddr, error) {
// Encapsulate
return ipm.Encapsulate(udpm), nil
case "utp", "utp4", "utp6":
acc, ok := a.(*utp.UTPAddr)
if !ok {
return nil, errIncorrectNetAddr
}
// Get UDP Addr
ac, ok := acc.Addr.(*net.UDPAddr)
if !ok {
return nil, errIncorrectNetAddr
}
// Get IP Addr
ipm, err := FromIP(ac.IP)
if err != nil {
return nil, errIncorrectNetAddr
}
// Get UDP Addr
utpm, err := ma.NewMultiaddr(fmt.Sprintf("/udp/%d/utp", ac.Port))
if err != nil {
return nil, errIncorrectNetAddr
}
// Encapsulate
return ipm.Encapsulate(utpm), nil
case "ip", "ip4", "ip6":
ac, ok := a.(*net.IPAddr)
if !ok {
@ -88,6 +116,8 @@ func ToNetAddr(maddr ma.Multiaddr) (net.Addr, error) {
return net.ResolveTCPAddr(network, host)
case "udp":
return net.ResolveUDPAddr(network, host)
case "utp":
return utp.ResolveUTPAddr(network, host)
case "ip":
return net.ResolveIPAddr(network, host)
}
@ -121,6 +151,10 @@ func DialArgs(m ma.Multiaddr) (string, string, error) {
}
network := parts[2]
if parts[2] == "udp" && len(parts) > 4 && parts[4] == "utp" {
network = parts[4]
}
var host string
switch parts[0] {
case "ip4":

35
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net/convert_test.go → Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net/convert_test.go generated vendored
View File

@ -4,6 +4,7 @@ import (
"net"
"testing"
utp "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/h2so5/utp"
ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
)
@ -88,17 +89,31 @@ func TestFromUDP(t *testing.T) {
})
}
func TestFromUTP(t *testing.T) {
testConvert(t, "/ip4/10.20.30.40/udp/1234/utp", func() (ma.Multiaddr, error) {
return FromNetAddr(&utp.UTPAddr{
Addr: &net.UDPAddr{
IP: net.ParseIP("10.20.30.40"),
Port: 1234,
},
})
})
}
func TestThinWaist(t *testing.T) {
addrs := map[string]bool{
"/ip4/127.0.0.1/udp/1234": true,
"/ip4/127.0.0.1/tcp/1234": true,
"/ip4/127.0.0.1/udp/1234/utp": true,
"/ip4/127.0.0.1/udp/1234/tcp/1234": true,
"/ip4/127.0.0.1/tcp/12345/ip4/1.2.3.4": true,
"/ip6/::1/tcp/80": true,
"/ip6/::1/udp/80": true,
"/ip6/::1": true,
"/ip6/::1/utp": false,
"/tcp/1234/ip4/1.2.3.4": false,
"/tcp/1234": false,
"/tcp/1234/utp": false,
"/tcp/1234/udp/1234": false,
"/ip4/1.2.3.4/ip4/2.3.4.5": true,
"/ip6/::1/ip4/2.3.4.5": true,
@ -117,21 +132,27 @@ func TestThinWaist(t *testing.T) {
}
func TestDialArgs(t *testing.T) {
m, err := ma.NewMultiaddr("/ip4/127.0.0.1/udp/1234")
test := func(e_maddr, e_nw, e_host string) {
m, err := ma.NewMultiaddr(e_maddr)
if err != nil {
t.Fatal("failed to construct", "/ip4/127.0.0.1/udp/1234")
t.Fatal("failed to construct", "/ip4/127.0.0.1/udp/1234", e_maddr)
}
nw, host, err := DialArgs(m)
if err != nil {
t.Fatal("failed to get dial args", "/ip4/127.0.0.1/udp/1234", err)
t.Fatal("failed to get dial args", e_maddr, m, err)
}
if nw != "udp" {
t.Error("failed to get udp network Dial Arg")
if nw != e_nw {
t.Error("failed to get udp network Dial Arg", e_nw, nw)
}
if host != "127.0.0.1:1234" {
t.Error("failed to get host:port Dial Arg")
if host != e_host {
t.Error("failed to get host:port Dial Arg", e_host, host)
}
}
test("/ip4/127.0.0.1/udp/1234", "udp", "127.0.0.1:1234")
test("/ip4/127.0.0.1/tcp/4321", "tcp", "127.0.0.1:4321")
test("/ip4/127.0.0.1/udp/1234/utp", "utp", "127.0.0.1:1234")
}

0
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net/doc.go → Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net/doc.go generated vendored
View File

0
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net/ip.go → Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net/ip.go generated vendored
View File

BIN
Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net/multiaddr/multiaddr generated vendored Normal file
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2
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/multiaddr/multiaddr.go → Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net/multiaddr/multiaddr.go generated vendored
View File

@ -7,7 +7,7 @@ import (
"os"
ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net"
)
// flags

28
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net/net.go → Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net/net.go generated vendored
View File

@ -4,6 +4,7 @@ import (
"fmt"
"net"
utp "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/h2so5/utp"
ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
)
@ -68,7 +69,7 @@ func (c *maConn) RemoteMultiaddr() ma.Multiaddr {
// and RemoteAddr options are Multiaddrs, instead of net.Addrs.
type Dialer struct {
// Dialer is just an embed net.Dialer, with all its options.
// Dialer is just an embedded net.Dialer, with all its options.
net.Dialer
// LocalAddr is the local address to use when dialing an
@ -103,10 +104,25 @@ func (d *Dialer) Dial(remote ma.Multiaddr) (Conn, error) {
}
// ok, Dial!
nconn, err := d.Dialer.Dial(rnet, rnaddr)
var nconn net.Conn
switch rnet {
case "tcp":
nconn, err = d.Dialer.Dial(rnet, rnaddr)
if err != nil {
return nil, err
}
case "utp":
// construct utp dialer, with options on our net.Dialer
utpd := utp.Dialer{
Timeout: d.Dialer.Timeout,
LocalAddr: d.Dialer.LocalAddr,
}
nconn, err = utpd.Dial(rnet, rnaddr)
if err != nil {
return nil, err
}
}
// get local address (pre-specified or assigned within net.Conn)
local := d.LocalAddr
@ -206,7 +222,13 @@ func Listen(laddr ma.Multiaddr) (Listener, error) {
return nil, err
}
nl, err := net.Listen(lnet, lnaddr)
var nl net.Listener
switch lnet {
case "utp":
nl, err = utp.Listen(lnet, lnaddr)
default:
nl, err = net.Listen(lnet, lnaddr)
}
if err != nil {
return nil, err
}

93
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net/net_test.go → Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net/net_test.go generated vendored
View File

@ -12,7 +12,7 @@ import (
func newMultiaddr(t *testing.T, m string) ma.Multiaddr {
maddr, err := ma.NewMultiaddr(m)
if err != nil {
t.Fatalf("failed to construct multiaddr: %s", m)
t.Fatal("failed to construct multiaddr:", m, err)
}
return maddr
}
@ -138,6 +138,36 @@ func TestListen(t *testing.T) {
wg.Wait()
}
func TestListenAddrs(t *testing.T) {
test := func(addr string, succeed bool) {
maddr := newMultiaddr(t, addr)
l, err := Listen(maddr)
if !succeed {
if err == nil {
t.Fatal("succeeded in listening", addr)
}
return
}
if succeed && err != nil {
t.Fatal("failed to listen", addr, err)
}
if l == nil {
t.Fatal("failed to listen", addr, succeed, err)
}
if err = l.Close(); err != nil {
t.Fatal("failed to close listener", addr, err)
}
}
test("/ip4/127.0.0.1/tcp/4324", true)
test("/ip4/127.0.0.1/udp/4325", false)
test("/ip4/127.0.0.1/udp/4326/udt", false)
test("/ip4/127.0.0.1/udp/4326/utp", true)
}
func TestListenAndDial(t *testing.T) {
maddr := newMultiaddr(t, "/ip4/127.0.0.1/tcp/4323")
@ -199,6 +229,67 @@ func TestListenAndDial(t *testing.T) {
wg.Wait()
}
func TestListenAndDialUTP(t *testing.T) {
maddr := newMultiaddr(t, "/ip4/127.0.0.1/udp/4323/utp")
listener, err := Listen(maddr)
if err != nil {
t.Fatal("failed to listen")
}
var wg sync.WaitGroup
wg.Add(1)
go func() {
cB, err := listener.Accept()
if err != nil {
t.Fatal("failed to accept")
}
if !cB.LocalMultiaddr().Equal(maddr) {
t.Fatal("local multiaddr not equal:", maddr, cB.LocalMultiaddr())
}
// echo out
buf := make([]byte, 1024)
for {
_, err := cB.Read(buf)
if err != nil {
break
}
cB.Write(buf)
}
wg.Done()
}()
cA, err := Dial(newMultiaddr(t, "/ip4/127.0.0.1/udp/4323/utp"))
if err != nil {
t.Fatal("failed to dial", err)
}
buf := make([]byte, 1024)
if _, err := cA.Write([]byte("beep boop")); err != nil {
t.Fatal("failed to write:", err)
}
if _, err := cA.Read(buf); err != nil {
t.Fatal("failed to read:", buf, err)
}
if !bytes.Equal(buf[:9], []byte("beep boop")) {
t.Fatal("failed to echo:", buf)
}
maddr2 := cA.RemoteMultiaddr()
if !maddr2.Equal(maddr) {
t.Fatal("remote multiaddr not equal:", maddr, maddr2)
}
cA.Close()
wg.Wait()
}
func TestIPLoopback(t *testing.T) {
if IP4Loopback.String() != "/ip4/127.0.0.1" {
t.Error("IP4Loopback incorrect:", IP4Loopback)

25
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/codec.go generated vendored
View File

@ -28,12 +28,14 @@ func stringToBytes(s string) ([]byte, error) {
if p == nil {
return nil, fmt.Errorf("no protocol with name %s", sp[0])
}
b = append(b, byte(p.Code))
b = append(b, CodeToVarint(p.Code)...)
sp = sp[1:]
a := addressStringToBytes(p, sp[1])
if p.Size > 0 {
a := addressStringToBytes(p, sp[0])
b = append(b, a...)
sp = sp[2:]
sp = sp[1:]
}
}
return b, nil
}
@ -50,19 +52,23 @@ func bytesToString(b []byte) (ret string, err error) {
s := ""
for len(b) > 0 {
p := ProtocolWithCode(int(b[0]))
code, n := ReadVarintCode(b)
b = b[n:]
p := ProtocolWithCode(code)
if p == nil {
return "", fmt.Errorf("no protocol with code %d", b[0])
return "", fmt.Errorf("no protocol with code %d", code)
}
s = strings.Join([]string{s, "/", p.Name}, "")
b = b[1:]
if p.Size > 0 {
a := addressBytesToString(p, b[:(p.Size/8)])
if len(a) > 0 {
s = strings.Join([]string{s, "/", a}, "")
}
b = b[(p.Size / 8):]
}
}
return s, nil
}
@ -78,12 +84,13 @@ func bytesSplit(b []byte) (ret [][]byte, err error) {
ret = [][]byte{}
for len(b) > 0 {
p := ProtocolWithCode(int(b[0]))
code, n := ReadVarintCode(b)
p := ProtocolWithCode(code)
if p == nil {
return [][]byte{}, fmt.Errorf("no protocol with code %d", b[0])
}
length := 1 + (p.Size / 8)
length := n + (p.Size / 8)
ret = append(ret, b[:length])
b = b[length:]
}

5
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/multiaddr.go generated vendored
View File

@ -67,14 +67,15 @@ func (m *multiaddr) Protocols() []*Protocol {
ps := []*Protocol{}
b := m.bytes[:]
for len(b) > 0 {
p := ProtocolWithCode(int(b[0]))
code, n := ReadVarintCode(b)
p := ProtocolWithCode(code)
if p == nil {
// this is a panic (and not returning err) because this should've been
// caught on constructing the Multiaddr
panic(fmt.Errorf("no protocol with code %d", b[0]))
}
ps = append(ps, p)
b = b[1+(p.Size/8):]
b = b[n+(p.Size/8):]
}
return ps
}

BIN
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/multiaddr/multiaddr generated vendored
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8
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/multiaddr_test.go generated vendored
View File

@ -68,6 +68,8 @@ func TestStringToBytes(t *testing.T) {
}
testString("/ip4/127.0.0.1/udp/1234", "047f0000011104d2")
testString("/ip4/127.0.0.1/tcp/4321", "047f0000010610e1")
testString("/ip4/127.0.0.1/udp/1234/ip4/127.0.0.1/tcp/4321", "047f0000011104d2047f0000010610e1")
}
func TestBytesToString(t *testing.T) {
@ -89,6 +91,8 @@ func TestBytesToString(t *testing.T) {
}
testString("/ip4/127.0.0.1/udp/1234", "047f0000011104d2")
testString("/ip4/127.0.0.1/tcp/4321", "047f0000010610e1")
testString("/ip4/127.0.0.1/udp/1234/ip4/127.0.0.1/tcp/4321", "047f0000011104d2047f0000010610e1")
}
func TestBytesSplitAndJoin(t *testing.T) {
@ -96,7 +100,7 @@ func TestBytesSplitAndJoin(t *testing.T) {
testString := func(s string, res []string) {
m, err := NewMultiaddr(s)
if err != nil {
t.Error("failed to convert", s)
t.Fatal("failed to convert", s, err)
}
split := Split(m)
@ -132,6 +136,8 @@ func TestBytesSplitAndJoin(t *testing.T) {
testString("/ip4/1.2.3.4/udp/1234", []string{"/ip4/1.2.3.4", "/udp/1234"})
testString("/ip4/1.2.3.4/tcp/1/ip4/2.3.4.5/udp/2",
[]string{"/ip4/1.2.3.4", "/tcp/1", "/ip4/2.3.4.5", "/udp/2"})
testString("/ip4/1.2.3.4/utp/ip4/2.3.4.5/udp/2/udt",
[]string{"/ip4/1.2.3.4", "/utp", "/ip4/2.3.4.5", "/udp/2", "/udt"})
}
func TestProtocols(t *testing.T) {

2
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/protocols.csv generated vendored
View File

@ -5,5 +5,7 @@ code size name
33 16 dccp
41 128 ip6
132 16 sctp
301 0 udt
302 0 utp
480 0 http
443 0 https

1 code size name
5 33 16 dccp
6 41 128 ip6
7 132 16 sctp
8 301 0 udt
9 302 0 utp
10 480 0 http
11 443 0 https

44
Godeps/_workspace/src/github.com/jbenet/go-multiaddr/protocols.go generated vendored
View File

@ -1,10 +1,15 @@
package multiaddr
import (
"encoding/binary"
)
// Protocol is a Multiaddr protocol description structure.
type Protocol struct {
Code int
Size int
Name string
VCode []byte
}
// replicating table here to:
@ -18,17 +23,21 @@ const (
P_DCCP = 33
P_IP6 = 41
P_SCTP = 132
P_UTP = 301
P_UDT = 302
)
// Protocols is the list of multiaddr protocols supported by this module.
var Protocols = []*Protocol{
&Protocol{P_IP4, 32, "ip4"},
&Protocol{P_TCP, 16, "tcp"},
&Protocol{P_UDP, 16, "udp"},
&Protocol{P_DCCP, 16, "dccp"},
&Protocol{P_IP6, 128, "ip6"},
&Protocol{P_IP4, 32, "ip4", CodeToVarint(P_IP4)},
&Protocol{P_TCP, 16, "tcp", CodeToVarint(P_TCP)},
&Protocol{P_UDP, 16, "udp", CodeToVarint(P_UDP)},
&Protocol{P_DCCP, 16, "dccp", CodeToVarint(P_DCCP)},
&Protocol{P_IP6, 128, "ip6", CodeToVarint(P_IP6)},
// these require varint:
&Protocol{P_SCTP, 16, "sctp"},
&Protocol{P_SCTP, 16, "sctp", CodeToVarint(P_SCTP)},
&Protocol{P_UTP, 0, "utp", CodeToVarint(P_UTP)},
&Protocol{P_UDT, 0, "udt", CodeToVarint(P_UDT)},
// {480, 0, "http"},
// {443, 0, "https"},
}
@ -52,3 +61,26 @@ func ProtocolWithCode(c int) *Protocol {
}
return nil
}
// CodeToVarint converts an integer to a varint-encoded []byte
func CodeToVarint(num int) []byte {
buf := make([]byte, (num/7)+1) // varint package is uint64
n := binary.PutUvarint(buf, uint64(num))
return buf[:n]
}
// VarintToCode converts a varint-encoded []byte to an integer protocol code
func VarintToCode(buf []byte) int {
num, _ := ReadVarintCode(buf)
return num
}
// ReadVarintCode reads a varint code from the beginning of buf.
// returns the code, and the number of bytes read.
func ReadVarintCode(buf []byte) (int, int) {
num, n := binary.Uvarint(buf)
if n < 0 {
panic("varints larger than uint64 not yet supported")
}
return int(num), n
}

2
cmd/ipfs/daemon.go
View File

@ -6,7 +6,7 @@ import (
manners "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/braintree/manners"
ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net"
cmds "github.com/jbenet/go-ipfs/commands"
cmdsHttp "github.com/jbenet/go-ipfs/commands/http"
core "github.com/jbenet/go-ipfs/core"

8
cmd/ipfs/init.go
View File

@ -177,9 +177,13 @@ func initConfig(configFilename string, dspathOverride string, nBitsForKeypair in
conf := &config.Config{
// setup the node addresses.
// setup the node's default addresses.
// Note: two swarm listen addrs, one tcp, one utp.
Addresses: config.Addresses{
Swarm: "/ip4/0.0.0.0/tcp/4001",
Swarm: []string{
"/ip4/0.0.0.0/tcp/4001",
"/ip4/0.0.0.0/udp/4002/utp",
},
API: "/ip4/127.0.0.1/tcp/5001",
},

2
cmd/ipfs/main.go
View File

@ -12,7 +12,7 @@ import (
// TODO rm direct reference to go-logging
logging "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-logging"
ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net"
cmds "github.com/jbenet/go-ipfs/commands"
cmdsCli "github.com/jbenet/go-ipfs/commands/cli"

2
config/config.go
View File

@ -36,7 +36,7 @@ type Datastore struct {
// Addresses stores the (string) multiaddr addresses for the node.
type Addresses struct {
Swarm string // address for the swarm network
Swarm []string // addresses for the swarm network
API string // address for the local API (RPC)
}

5
config/serialize.go
View File

@ -17,7 +17,10 @@ func ReadConfigFile(filename string, cfg interface{}) error {
}
defer f.Close()
return Decode(f, cfg)
if err := Decode(f, cfg); err != nil {
return fmt.Errorf("Failure to decode config: %s", err)
}
return nil
}
// WriteConfigFile writes the config from `cfg` into `filename`.

12
core/core.go
View File

@ -268,15 +268,15 @@ func initConnections(ctx context.Context, cfg *config.Config, pstore peer.Peerst
}
func listenAddresses(cfg *config.Config) ([]ma.Multiaddr, error) {
var listen []ma.Multiaddr
if len(cfg.Addresses.Swarm) > 0 {
maddr, err := ma.NewMultiaddr(cfg.Addresses.Swarm)
var err error
listen := make([]ma.Multiaddr, len(cfg.Addresses.Swarm))
for i, addr := range cfg.Addresses.Swarm {
listen[i], err = ma.NewMultiaddr(addr)
if err != nil {
return nil, fmt.Errorf("Failure to parse config.Addresses.Swarm: %s", cfg.Addresses.Swarm)
return nil, fmt.Errorf("Failure to parse config.Addresses.Swarm[%d]: %s", i, cfg.Addresses.Swarm)
}
listen = append(listen, maddr)
}
return listen, nil

4
core/core_test.go
View File

@ -17,7 +17,7 @@ func TestInitialization(t *testing.T) {
Type: "memory",
},
Addresses: config.Addresses{
Swarm: "/ip4/0.0.0.0/tcp/4001",
Swarm: []string{"/ip4/0.0.0.0/tcp/4001"},
API: "/ip4/127.0.0.1/tcp/8000",
},
},
@ -29,7 +29,7 @@ func TestInitialization(t *testing.T) {
Path: ".testdb",
},
Addresses: config.Addresses{
Swarm: "/ip4/0.0.0.0/tcp/4001",
Swarm: []string{"/ip4/0.0.0.0/tcp/4001"},
API: "/ip4/127.0.0.1/tcp/8000",
},
},

2
net/conn/conn.go
View File

@ -8,7 +8,7 @@ import (
context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.net/context"
msgio "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-msgio"
ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net"
peer "github.com/jbenet/go-ipfs/peer"
u "github.com/jbenet/go-ipfs/util"

46
net/conn/dial.go
View File

@ -1,30 +1,58 @@
package conn
import (
"fmt"
"strings"
context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.net/context"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net"
ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net"
peer "github.com/jbenet/go-ipfs/peer"
debugerror "github.com/jbenet/go-ipfs/util/debugerror"
)
// Dial connects to a particular peer, over a given network
// Example: d.Dial(ctx, "udp", peer)
func (d *Dialer) Dial(ctx context.Context, network string, remote peer.Peer) (Conn, error) {
laddr := d.LocalPeer.NetAddress(network)
if laddr == nil {
return nil, fmt.Errorf("No local address for network %s", network)
}
raddr := remote.NetAddress(network)
if raddr == nil {
return nil, fmt.Errorf("No remote address for network %s", network)
return nil, debugerror.Errorf("No remote address for network %s", network)
}
return d.DialAddr(ctx, raddr, remote)
}
// DialAddr connects to a peer over a particular address
// Ensures raddr is part of peer.Addresses()
// Example: d.DialAddr(ctx, peer.Addresses()[0], peer)
func (d *Dialer) DialAddr(ctx context.Context, raddr ma.Multiaddr, remote peer.Peer) (Conn, error) {
found := false
for _, addr := range remote.Addresses() {
if addr.Equal(raddr) {
found = true
}
}
if !found {
return nil, debugerror.Errorf("address %s is not in peer %s", raddr, remote)
}
network, _, err := manet.DialArgs(raddr)
if err != nil {
return nil, err
}
laddr := d.LocalPeer.NetAddress(network)
if laddr == nil {
return nil, debugerror.Errorf("No local address for network %s", network)
}
if strings.HasPrefix(raddr.String(), "/ip4/0.0.0.0") {
return nil, debugerror.Errorf("Attempted to connect to zero address: %s", raddr)
}
remote.SetType(peer.Remote)
remote, err := d.Peerstore.Add(remote)
remote, err = d.Peerstore.Add(remote)
if err != nil {
log.Errorf("Error putting peer into peerstore: %s", remote)
}

70
net/conn/dial_test.go
View File

@ -157,3 +157,73 @@ func TestDialer(t *testing.T) {
l.Close()
cancel()
}
func TestDialAddr(t *testing.T) {
// t.Skip("Skipping in favor of another test")
p1, err := setupPeer("/ip4/127.0.0.1/tcp/4334")
if err != nil {
t.Fatal("error setting up peer", err)
}
p2, err := setupPeer("/ip4/127.0.0.1/tcp/4335")
if err != nil {
t.Fatal("error setting up peer", err)
}
ctx, cancel := context.WithCancel(context.Background())
laddr := p1.NetAddress("tcp")
if laddr == nil {
t.Fatal("Listen address is nil.")
}
ps1 := peer.NewPeerstore()
ps2 := peer.NewPeerstore()
ps1.Add(p1)
ps2.Add(p2)
l, err := Listen(ctx, laddr, p1, ps1)
if err != nil {
t.Fatal(err)
}
go echoListen(ctx, l)
d := &Dialer{
Peerstore: ps2,
LocalPeer: p2,
}
raddr := p1.NetAddress("tcp")
if raddr == nil {
t.Fatal("Dial address is nil.")
}
c, err := d.DialAddr(ctx, raddr, p1)
if err != nil {
t.Fatal("error dialing peer", err)
}
// fmt.Println("sending")
c.Out() <- []byte("beep")
c.Out() <- []byte("boop")
out := <-c.In()
// fmt.Println("recving", string(out))
data := string(out)
if data != "beep" {
t.Error("unexpected conn output", data)
}
out = <-c.In()
data = string(out)
if string(out) != "boop" {
t.Error("unexpected conn output", data)
}
// fmt.Println("closing")
c.Close()
l.Close()
cancel()
}

7
net/conn/listen.go
View File

@ -1,9 +1,11 @@
package conn
import (
"fmt"
context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.net/context"
ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net"
peer "github.com/jbenet/go-ipfs/peer"
ctxc "github.com/jbenet/go-ipfs/util/ctxcloser"
@ -73,6 +75,7 @@ func (l *listener) listen() {
}
for {
log.Info("swarm listening on %s -- %v\n", l.Multiaddr(), l.Listener)
maconn, err := l.Listener.Accept()
if err != nil {
@ -120,7 +123,7 @@ func Listen(ctx context.Context, addr ma.Multiaddr, local peer.Peer, peers peer.
ml, err := manet.Listen(addr)
if err != nil {
return nil, err
return nil, fmt.Errorf("Failed to listen on %s: %s", addr, err)
}
// todo make this a variable

2
net/swarm/addrs.go
View File

@ -2,7 +2,7 @@ package swarm
import (
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.net/context"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net"
"github.com/jbenet/go-ipfs/util/eventlog"
ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"

60
net/swarm/conn.go
View File

@ -6,6 +6,7 @@ import (
conn "github.com/jbenet/go-ipfs/net/conn"
msg "github.com/jbenet/go-ipfs/net/message"
peer "github.com/jbenet/go-ipfs/peer"
context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.net/context"
ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
@ -95,8 +96,38 @@ func (s *Swarm) handleIncomingConn(nconn conn.Conn) {
}
}
// connSetup adds the passed in connection to its peerMap and starts
// the fanInSingle routine for that connection
// peerMultiConn returns the MultiConn responsible for handling this peer.
// if there is none, it creates one and returns it. Note that timeouts
// and connection teardowns will remove it.
func (s *Swarm) peerMultiConn(p peer.Peer) (*conn.MultiConn, error) {
s.connsLock.Lock()
mc, found := s.conns[p.Key()]
if found {
s.connsLock.Unlock()
return mc, nil
}
// multiconn doesn't exist, make a new one.
mc, err := conn.NewMultiConn(s.Context(), s.local, p, nil)
if err != nil {
s.connsLock.Unlock()
log.Errorf("error creating multiconn: %s", err)
return nil, err
}
s.conns[p.Key()] = mc
s.connsLock.Unlock()
// kick off reader goroutine
s.Children().Add(1)
mc.Children().Add(1) // child of Conn as well.
go s.fanInSingle(mc)
log.Debugf("added new multiconn: %s", mc)
return mc, nil
}
// connSetup takes a new connection, performs the IPFS handshake (handshake3)
// and then adds it to the appropriate MultiConn.
func (s *Swarm) connSetup(c conn.Conn) (conn.Conn, error) {
if c == nil {
return nil, errors.New("Tried to start nil connection.")
@ -126,35 +157,14 @@ func (s *Swarm) connSetup(c conn.Conn) (conn.Conn, error) {
}
// add to conns
s.connsLock.Lock()
mc, found := s.conns[c.RemotePeer().Key()]
if !found {
// multiconn doesn't exist, make a new one.
conns := []conn.Conn{c}
mc, err := conn.NewMultiConn(s.Context(), s.local, c.RemotePeer(), conns)
mc, err := s.peerMultiConn(c.RemotePeer())
if err != nil {
log.Errorf("error creating multiconn: %s", err)
c.Close()
return nil, err
}
s.conns[c.RemotePeer().Key()] = mc
s.connsLock.Unlock()
// kick off reader goroutine
s.Children().Add(1)
mc.Children().Add(1) // child of Conn as well.
go s.fanInSingle(mc)
log.Debugf("added new multiconn: %s", mc)
} else {
s.connsLock.Unlock() // unlock before adding new conn
mc.Add(c)
log.Debugf("multiconn found: %s", mc)
}
log.Debugf("multiconn added new conn %s", c)
return c, nil
}

17
net/swarm/swarm.go
View File

@ -5,7 +5,6 @@ package swarm
import (
"errors"
"fmt"
"strings"
"sync"
conn "github.com/jbenet/go-ipfs/net/conn"
@ -133,17 +132,15 @@ func (s *Swarm) Dial(peer peer.Peer) (conn.Conn, error) {
Peerstore: s.peers,
}
// If we are attempting to connect to the zero addr, fail out early
raddr := peer.NetAddress("tcp")
if raddr == nil {
return nil, fmt.Errorf("No remote address for network tcp")
// try to connect to one of the peer's known addresses.
// for simplicity, we do this sequentially.
// A future commit will do this asynchronously.
for _, addr := range peer.Addresses() {
c, err = d.DialAddr(s.Context(), addr, peer)
if err == nil {
break
}
if strings.HasPrefix(raddr.String(), "/ip4/0.0.0.0") {
return nil, fmt.Errorf("Attempted to connect to loopback address: %s", raddr)
}
c, err = d.Dial(s.Context(), "tcp", peer)
if err != nil {
return nil, err
}

2
server/http/http.go
View File

@ -8,7 +8,7 @@ import (
mux "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/gorilla/mux"
ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr/net"
manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net"
mh "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multihash"
core "github.com/jbenet/go-ipfs/core"