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-rw-r--r--src/tcp_connecter.cpp307
1 files changed, 307 insertions, 0 deletions
diff --git a/src/tcp_connecter.cpp b/src/tcp_connecter.cpp
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--- /dev/null
+++ b/src/tcp_connecter.cpp
@@ -0,0 +1,307 @@
+/*
+ Copyright (c) 2007-2010 iMatix Corporation
+
+ This file is part of 0MQ.
+
+ 0MQ is free software; you can redistribute it and/or modify it under
+ the terms of the Lesser GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ 0MQ is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ Lesser GNU General Public License for more details.
+
+ You should have received a copy of the Lesser GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <string.h>
+
+#include <string>
+
+#include "../include/zmq.h"
+
+#include "tcp_connecter.hpp"
+#include "platform.hpp"
+#include "ip.hpp"
+#include "err.hpp"
+
+#ifdef ZMQ_HAVE_WINDOWS
+
+zmq::tcp_connecter_t::tcp_connecter_t () :
+ s (retired_fd)
+{
+ memset (&addr, 0, sizeof (addr));
+ addr_len = 0;
+}
+
+zmq::tcp_connecter_t::~tcp_connecter_t ()
+{
+ if (s != retired_fd)
+ close ();
+}
+
+int zmq::tcp_connecter_t::set_address (const char *protocol_, const char *addr_)
+{
+ if (strcmp (protocol_, "tcp") == 0)
+ return resolve_ip_hostname (&addr, &addr_len, addr_);
+
+ errno = EPROTONOSUPPORT;
+ return -1;
+}
+
+int zmq::tcp_connecter_t::open ()
+{
+ zmq_assert (s == retired_fd);
+
+ // Create the socket.
+ s = socket (addr.ss_family, SOCK_STREAM, IPPROTO_TCP);
+ if (s == INVALID_SOCKET) {
+ wsa_error_to_errno ();
+ return -1;
+ }
+
+ // Set to non-blocking mode.
+ unsigned long argp = 1;
+ int rc = ioctlsocket (s, FIONBIO, &argp);
+ wsa_assert (rc != SOCKET_ERROR);
+
+ // Disable Nagle's algorithm.
+ int flag = 1;
+ rc = setsockopt (s, IPPROTO_TCP, TCP_NODELAY, (char*) &flag,
+ sizeof (int));
+ wsa_assert (rc != SOCKET_ERROR);
+
+ // Connect to the remote peer.
+ rc = ::connect (s, (sockaddr*) &addr, addr_len);
+
+ // Connect was successfull immediately.
+ if (rc == 0)
+ return 0;
+
+ // Asynchronous connect was launched.
+ if (rc == SOCKET_ERROR && (WSAGetLastError () == WSAEINPROGRESS ||
+ WSAGetLastError () == WSAEWOULDBLOCK)) {
+ errno = EAGAIN;
+ return -1;
+ }
+
+ wsa_error_to_errno ();
+ return -1;
+}
+
+int zmq::tcp_connecter_t::close ()
+{
+ zmq_assert (s != retired_fd);
+ int rc = closesocket (s);
+ wsa_assert (rc != SOCKET_ERROR);
+ s = retired_fd;
+ return 0;
+}
+
+zmq::fd_t zmq::tcp_connecter_t::get_fd ()
+{
+ return s;
+}
+
+zmq::fd_t zmq::tcp_connecter_t::connect ()
+{
+ // Nonblocking connect have finished. Check whether an error occured.
+ int err = 0;
+ socklen_t len = sizeof err;
+ int rc = getsockopt (s, SOL_SOCKET, SO_ERROR, (char*) &err, &len);
+ zmq_assert (rc == 0);
+ if (err != 0) {
+
+ // Assert that the error was caused by the networking problems
+ // rather than 0MQ bug.
+ zmq_assert (err == WSAECONNREFUSED || err == WSAETIMEDOUT ||
+ err == WSAECONNABORTED);
+
+ errno = err;
+ return retired_fd;
+ }
+
+ // Return the newly connected socket.
+ fd_t result = s;
+ s = retired_fd;
+ return result;
+}
+
+#else
+
+#include <unistd.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netinet/tcp.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <fcntl.h>
+
+#ifdef ZMQ_HAVE_OPENVMS
+#include <ioctl.h>
+#endif
+
+zmq::tcp_connecter_t::tcp_connecter_t () :
+ s (retired_fd)
+{
+ memset (&addr, 0, sizeof (addr));
+}
+
+zmq::tcp_connecter_t::~tcp_connecter_t ()
+{
+ if (s != retired_fd)
+ close ();
+}
+
+int zmq::tcp_connecter_t::set_address (const char *protocol_, const char *addr_)
+{
+ if (strcmp (protocol_, "tcp") == 0)
+ return resolve_ip_hostname (&addr, &addr_len, addr_);
+ else if (strcmp (protocol_, "ipc") == 0)
+ return resolve_local_path (&addr, &addr_len, addr_);
+
+ errno = EPROTONOSUPPORT;
+ return -1;
+}
+
+int zmq::tcp_connecter_t::open ()
+{
+ zmq_assert (s == retired_fd);
+ struct sockaddr *sa = (struct sockaddr*) &addr;
+
+ if (AF_UNIX != sa->sa_family) {
+
+ // Create the socket.
+ s = socket (sa->sa_family, SOCK_STREAM, IPPROTO_TCP);
+ if (s == -1)
+ return -1;
+
+ // Set to non-blocking mode.
+#ifdef ZMQ_HAVE_OPENVMS
+ int flags = 1;
+ int rc = ioctl (s, FIONBIO, &flags);
+ errno_assert (rc != -1);
+#else
+ int flags = fcntl (s, F_GETFL, 0);
+ if (flags == -1)
+ flags = 0;
+ int rc = fcntl (s, F_SETFL, flags | O_NONBLOCK);
+ errno_assert (rc != -1);
+#endif
+
+ // Disable Nagle's algorithm.
+ int flag = 1;
+ rc = setsockopt (s, IPPROTO_TCP, TCP_NODELAY, (char*) &flag,
+ sizeof (int));
+ errno_assert (rc == 0);
+
+#ifdef ZMQ_HAVE_OPENVMS
+ // Disable delayed acknowledgements.
+ flag = 1;
+ rc = setsockopt (s, IPPROTO_TCP, TCP_NODELACK, (char*) &flag,
+ sizeof (int));
+ errno_assert (rc != SOCKET_ERROR);
+#endif
+
+ // Connect to the remote peer.
+ rc = ::connect (s, (struct sockaddr*) &addr, addr_len);
+
+ // Connect was successfull immediately.
+ if (rc == 0)
+ return 0;
+
+ // Asynchronous connect was launched.
+ if (rc == -1 && errno == EINPROGRESS) {
+ errno = EAGAIN;
+ return -1;
+ }
+
+ // Error occured.
+ int err = errno;
+ close ();
+ errno = err;
+ return -1;
+ }
+
+#ifndef ZMQ_HAVE_OPENVMS
+ else {
+
+ // Create the socket.
+ zmq_assert (AF_UNIX == sa->sa_family);
+ s = socket (AF_UNIX, SOCK_STREAM, 0);
+ if (s == -1)
+ return -1;
+
+ // Set the non-blocking flag.
+ int flag = fcntl (s, F_GETFL, 0);
+ if (flag == -1)
+ flag = 0;
+ int rc = fcntl (s, F_SETFL, flag | O_NONBLOCK);
+ errno_assert (rc != -1);
+
+ // Connect to the remote peer.
+ rc = ::connect (s, (struct sockaddr*) &addr, sizeof (sockaddr_un));
+
+ // Connect was successfull immediately.
+ if (rc == 0)
+ return 0;
+
+ // Error occured.
+ int err = errno;
+ close ();
+ errno = err;
+ return -1;
+ }
+#endif
+
+ zmq_assert (false);
+ return -1;
+}
+
+int zmq::tcp_connecter_t::close ()
+{
+ zmq_assert (s != retired_fd);
+ int rc = ::close (s);
+ if (rc != 0)
+ return -1;
+ s = retired_fd;
+ return 0;
+}
+
+zmq::fd_t zmq::tcp_connecter_t::get_fd ()
+{
+ return s;
+}
+
+zmq::fd_t zmq::tcp_connecter_t::connect ()
+{
+ // Following code should handle both Berkeley-derived socket
+ // implementations and Solaris.
+ int err = 0;
+#if defined ZMQ_HAVE_HPUX
+ int len = sizeof (err);
+#else
+ socklen_t len = sizeof (err);
+#endif
+ int rc = getsockopt (s, SOL_SOCKET, SO_ERROR, (char*) &err, &len);
+ if (rc == -1)
+ err = errno;
+ if (err != 0) {
+
+ // Assert that the error was caused by the networking problems
+ // rather than 0MQ bug.
+ zmq_assert (err == ECONNREFUSED || err == ETIMEDOUT);
+
+ errno = err;
+ return retired_fd;
+ }
+
+ fd_t result = s;
+ s = retired_fd;
+ return result;
+}
+
+#endif
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