1 /* Serial interface for raw TCP connections on Un*x like systems
2 Copyright 1992, 1993, 1998-1999 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
25 #include <sys/types.h>
27 #include <netinet/in.h>
28 #include <arpa/inet.h>
30 #include <sys/socket.h>
32 #include <netinet/tcp.h>
36 #include "gdb_string.h"
38 static int tcp_open (serial_t scb, const char *name);
39 static void tcp_close (serial_t scb);
41 void _initialize_ser_tcp (void);
43 /* Open up a raw tcp socket */
46 tcp_open (serial_t scb, const char *name)
50 struct hostent *hostent;
51 struct sockaddr_in sockaddr;
54 struct protoent *protoent;
57 port_str = strchr (name, ':');
60 error ("tcp_open: No colon in host name!"); /* Shouldn't ever happen */
62 tmp = min (port_str - name, (int) sizeof hostname - 1);
63 strncpy (hostname, name, tmp); /* Don't want colon */
64 hostname[tmp] = '\000'; /* Tie off host name */
65 port = atoi (port_str + 1);
67 hostent = gethostbyname (hostname);
71 fprintf_unfiltered (gdb_stderr, "%s: unknown host\n", hostname);
76 for (i = 1; i <= 15; i++)
78 scb->fd = socket (PF_INET, SOCK_STREAM, 0);
82 /* Allow rapid reuse of this port. */
84 setsockopt (scb->fd, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, sizeof (tmp));
86 /* Enable TCP keep alive process. */
88 setsockopt (scb->fd, SOL_SOCKET, SO_KEEPALIVE, (char *) &tmp, sizeof (tmp));
90 sockaddr.sin_family = PF_INET;
91 sockaddr.sin_port = htons (port);
92 memcpy (&sockaddr.sin_addr.s_addr, hostent->h_addr,
93 sizeof (struct in_addr));
95 if (!connect (scb->fd, (struct sockaddr *) &sockaddr, sizeof (sockaddr)))
101 /* We retry for ECONNREFUSED because that is often a temporary condition, which
102 happens when the server is being restarted. */
104 if (errno != ECONNREFUSED)
110 protoent = getprotobyname ("tcp");
115 if (setsockopt (scb->fd, protoent->p_proto, TCP_NODELAY,
116 (char *) &tmp, sizeof (tmp)))
119 signal (SIGPIPE, SIG_IGN); /* If we don't do this, then GDB simply exits
120 when the remote side dies. */
126 tcp_close (serial_t scb)
136 _initialize_ser_tcp (void)
138 struct serial_ops *ops = XMALLOC (struct serial_ops);
139 memset (ops, sizeof (struct serial_ops), 0);
142 ops->open = tcp_open;
143 ops->close = tcp_close;
144 ops->readchar = ser_unix_readchar;
145 ops->write = ser_unix_write;
146 ops->flush_output = ser_unix_nop_flush_output;
147 ops->flush_input = ser_unix_flush_input;
148 ops->send_break = ser_unix_nop_send_break;
149 ops->go_raw = ser_unix_nop_raw;
150 ops->get_tty_state = ser_unix_nop_get_tty_state;
151 ops->set_tty_state = ser_unix_nop_set_tty_state;
152 ops->print_tty_state = ser_unix_nop_print_tty_state;
153 ops->noflush_set_tty_state = ser_unix_nop_noflush_set_tty_state;
154 ops->setbaudrate = ser_unix_nop_setbaudrate;
155 ops->setstopbits = ser_unix_nop_setstopbits;
156 ops->drain_output = ser_unix_nop_drain_output;
157 ops->async = ser_unix_async;
158 serial_add_interface (ops);