mirror of
https://github.com/ipfs/kubo.git
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58 lines
1.6 KiB
Go
58 lines
1.6 KiB
Go
package proxy
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import (
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ggio "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/gogo/protobuf/io"
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context "github.com/ipfs/go-ipfs/Godeps/_workspace/src/golang.org/x/net/context"
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inet "github.com/ipfs/go-ipfs/p2p/net"
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peer "github.com/ipfs/go-ipfs/p2p/peer"
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dhtpb "github.com/ipfs/go-ipfs/routing/dht/pb"
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)
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// RequestHandler handles routing requests locally
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type RequestHandler interface {
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HandleRequest(ctx context.Context, p peer.ID, m *dhtpb.Message) *dhtpb.Message
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}
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// Loopback forwards requests to a local handler
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type Loopback struct {
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Handler RequestHandler
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Local peer.ID
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}
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func (_ *Loopback) Bootstrap(ctx context.Context) error {
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return nil
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}
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// SendMessage intercepts local requests, forwarding them to a local handler
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func (lb *Loopback) SendMessage(ctx context.Context, m *dhtpb.Message) error {
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response := lb.Handler.HandleRequest(ctx, lb.Local, m)
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if response != nil {
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log.Warning("loopback handler returned unexpected message")
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}
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return nil
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}
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// SendRequest intercepts local requests, forwarding them to a local handler
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func (lb *Loopback) SendRequest(ctx context.Context, m *dhtpb.Message) (*dhtpb.Message, error) {
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return lb.Handler.HandleRequest(ctx, lb.Local, m), nil
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}
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func (lb *Loopback) HandleStream(s inet.Stream) {
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defer s.Close()
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pbr := ggio.NewDelimitedReader(s, inet.MessageSizeMax)
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var incoming dhtpb.Message
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if err := pbr.ReadMsg(&incoming); err != nil {
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log.Debug(err)
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return
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}
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ctx := context.TODO()
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outgoing := lb.Handler.HandleRequest(ctx, s.Conn().RemotePeer(), &incoming)
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pbw := ggio.NewDelimitedWriter(s)
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if err := pbw.WriteMsg(outgoing); err != nil {
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return // TODO logerr
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}
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}
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