Mercurial > hg > freeDiameter
view libfdcore/tcp.c @ 740:4a9f08d6b6ba
Updated my mail address
author | Sebastien Decugis <sdecugis@nict.go.jp> |
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date | Thu, 24 Mar 2011 15:00:18 +0900 |
parents | 78b665400097 |
children | 867156be8353 |
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/********************************************************************************************************* * Software License Agreement (BSD License) * * Author: Sebastien Decugis <sdecugis@freediameter.net> * * * * Copyright (c) 2011, WIDE Project and NICT * * All rights reserved. * * * * Redistribution and use of this software 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 the WIDE Project or NICT nor the * * names of its contributors may be used to endorse or * * promote products derived from this software without * * specific prior written permission of WIDE Project and * * NICT. * * * * 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. * *********************************************************************************************************/ #include "fdcore-internal.h" #include "cnxctx.h" #include <netinet/tcp.h> #include <netinet/ip6.h> #include <sys/socket.h> /* Set the socket options for TCP sockets, before bind is called */ static int fd_tcp_setsockopt(int family, int sk) { int ret = 0; int opt; /* Clear the NODELAY option in case it was set, as requested by rfc3539#section-3.2 */ /* Note that this is supposed to be the default, so we could probably remove this call ... */ opt = 0; ret = setsockopt(sk, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt)); if (ret != 0) { ret = errno; TRACE_DEBUG(INFO, "Unable to set the socket TCP_NODELAY option: %s", strerror(ret)); return ret; } /* Under Linux, we may also set the TCP_CONGESTION option to one of the following strings: - reno (default) - bic - cubic - highspeed - htcp - hybla - illinois - lp - scalable - vegas - veno - westwood - yeah */ /* In case of v6 address, force the v6only option, we use a different socket for v4 */ #ifdef IPV6_V6ONLY if (family == AF_INET6) { opt = 1; CHECK_SYS(setsockopt(sk, IPPROTO_IPV6, IPV6_V6ONLY, &opt, sizeof(opt))); } #endif /* IPV6_V6ONLY */ #ifdef DEBUG { opt = 1; CHECK_SYS( setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) ); } #endif /* DEBUG */ /* There are also others sockopt that can be set, but nothing useful for us AFAICT */ return 0; } /* Create a socket server and bind it */ int fd_tcp_create_bind_server( int * sock, sSA * sa, socklen_t salen ) { TRACE_ENTRY("%p %p %d", sock, sa, salen); CHECK_PARAMS( sock && sa ); /* Create the socket */ CHECK_SYS( *sock = socket(sa->sa_family, SOCK_STREAM, IPPROTO_TCP) ); /* Set the socket options */ CHECK_FCT( fd_tcp_setsockopt(sa->sa_family, *sock) ); /* Bind the socket */ CHECK_SYS( bind( *sock, sa, salen ) ); /* We're done */ return 0; } /* Allow clients connections on server sockets */ int fd_tcp_listen( int sock ) { TRACE_ENTRY("%d", sock); CHECK_SYS( listen(sock, 5) ); return 0; } /* Create a client socket and connect to remote server */ int fd_tcp_client( int *sock, sSA * sa, socklen_t salen ) { int ret = 0; int s; TRACE_ENTRY("%p %p %d", sock, sa, salen); CHECK_PARAMS( sock && (*sock <= 0) && sa && salen ); /* Create the socket */ CHECK_SYS( s = socket(sa->sa_family, SOCK_STREAM, IPPROTO_TCP) ); /* Set the socket options */ CHECK_FCT( fd_tcp_setsockopt(sa->sa_family, s) ); /* Cleanup if we are cancelled */ pthread_cleanup_push(fd_cleanup_socket, &s); TRACE_DEBUG_sSA(FULL, "Attempting TCP connection with peer: ", sa, NI_NUMERICHOST | NI_NUMERICSERV, "..." ); /* Try connecting to the remote address */ ret = connect(s, sa, salen); pthread_cleanup_pop(0); if (ret < 0) { int lvl; switch (ret = errno) { case ECONNREFUSED: /* "Normal" errors */ lvl = FULL; break; default: lvl = INFO; } /* Some errors are expected, we log at different level */ TRACE_DEBUG( lvl, "connect returned an error: %s", strerror(ret)); CHECK_SYS_DO( close(s), /* continue */ ); *sock = -1; return ret; } /* Done! */ *sock = s; return ret; } /* Get the remote name of a TCP socket */ int fd_tcp_get_remote_ep(int sock, sSS * ss, socklen_t *sl) { TRACE_ENTRY("%d %p %p", sock, ss, sl); CHECK_PARAMS( ss && sl ); *sl = sizeof(sSS); CHECK_SYS(getpeername(sock, (sSA *)ss, sl)); return 0; }