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2002-05-14 Daniel Jacobowitz <drow@mvista.com>

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* ser-tcp.c: Include <netinet/udp.h>.  Rename tcp_open
        and tcp_close to net_open and net_close.
        (net_open): Accept "udp:" and "tcp:" specifications.  Connect
        using UDP if requested.  Don't try to disable Nagle on UDP
        sockets.
        * remote.c (remote_serial_open): New function.  Warn about UDP.
        (remote_open_1, remote_async_open_1, remote_cisco_open): Call it.

2002-05-14  Daniel Jacobowitz  <drow@mvista.com>

        * gdb.texinfo (Debug Session): Document new `udp:' and `tcp:'
        options for `target remote'.
This commit is contained in:
Daniel Jacobowitz
2002-05-14 04:26:25 +00:00
parent 5dbc6baa50
commit 9db8d71ff0
5 changed files with 92 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
gdb/ser-tcp.c
View File

@ -38,12 +38,13 @@
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>
#include <signal.h>
#include "gdb_string.h"
static int tcp_open (struct serial *scb, const char *name);
static void tcp_close (struct serial *scb);
static int net_open (struct serial *scb, const char *name);
static void net_close (struct serial *scb);
extern int (*ui_loop_hook) (int);
void _initialize_ser_tcp (void);
@ -55,17 +56,27 @@ void _initialize_ser_tcp (void);
/* Open a tcp socket */
static int
tcp_open (struct serial *scb, const char *name)
net_open (struct serial *scb, const char *name)
{
char *port_str, hostname[100];
int n, port, tmp;
int use_udp;
struct hostent *hostent;
struct sockaddr_in sockaddr;
use_udp = 0;
if (strncmp (name, "udp:", 4) == 0)
{
use_udp = 1;
name = name + 4;
}
else if (strncmp (name, "tcp:", 4) == 0)
name = name + 4;
port_str = strchr (name, ':');
if (!port_str)
error ("tcp_open: No colon in host name!"); /* Shouldn't ever happen */
error ("net_open: No colon in host name!"); /* Shouldn't ever happen */
tmp = min (port_str - name, (int) sizeof hostname - 1);
strncpy (hostname, name, tmp); /* Don't want colon */
@ -84,7 +95,11 @@ tcp_open (struct serial *scb, const char *name)
return -1;
}
scb->fd = socket (PF_INET, SOCK_STREAM, 0);
if (use_udp)
scb->fd = socket (PF_INET, SOCK_DGRAM, 0);
else
scb->fd = socket (PF_INET, SOCK_STREAM, 0);
if (scb->fd < 0)
return -1;
@ -102,7 +117,7 @@ tcp_open (struct serial *scb, const char *name)
if (n < 0 && errno != EINPROGRESS)
{
tcp_close (scb);
net_close (scb);
return -1;
}
@ -124,7 +139,7 @@ tcp_open (struct serial *scb, const char *name)
if (ui_loop_hook (0))
{
errno = EINTR;
tcp_close (scb);
net_close (scb);
return -1;
}
}
@ -142,7 +157,7 @@ tcp_open (struct serial *scb, const char *name)
{
if (polls > TIMEOUT * POLL_INTERVAL)
errno = ETIMEDOUT;
tcp_close (scb);
net_close (scb);
return -1;
}
}
@ -156,20 +171,23 @@ tcp_open (struct serial *scb, const char *name)
{
if (err)
errno = err;
tcp_close (scb);
net_close (scb);
return -1;
}
}
/* turn off nonblocking */
tmp = 0;
ioctl (scb->fd, FIONBIO, &tmp);
/* Disable Nagle algorithm. Needed in some cases. */
tmp = 1;
setsockopt (scb->fd, IPPROTO_TCP, TCP_NODELAY,
(char *)&tmp, sizeof (tmp));
if (use_udp == 0)
{
/* Disable Nagle algorithm. Needed in some cases. */
tmp = 1;
setsockopt (scb->fd, IPPROTO_TCP, TCP_NODELAY,
(char *)&tmp, sizeof (tmp));
}
/* If we don't do this, then GDB simply exits
when the remote side dies. */
signal (SIGPIPE, SIG_IGN);
@ -178,7 +196,7 @@ tcp_open (struct serial *scb, const char *name)
}
static void
tcp_close (struct serial *scb)
net_close (struct serial *scb)
{
if (scb->fd < 0)
return;
@ -194,8 +212,8 @@ _initialize_ser_tcp (void)
memset (ops, sizeof (struct serial_ops), 0);
ops->name = "tcp";
ops->next = 0;
ops->open = tcp_open;
ops->close = tcp_close;
ops->open = net_open;
ops->close = net_close;
ops->readchar = ser_unix_readchar;
ops->write = ser_unix_write;
ops->flush_output = ser_unix_nop_flush_output;