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Different connecters simplified

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Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
This commit is contained in:
Martin Sustrik
2011-07-29 09:37:43 +02:00
parent f63db009a1
commit d5f3628ad0
8 changed files with 117 additions and 349 deletions
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31
src/ip.cpp
View File

@@ -28,6 +28,18 @@
#include "platform.hpp"
#include "stdint.hpp"
#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
#include <sys/un.h>
#endif
#if !defined ZMQ_HAVE_WINDOWS
#include <fcntl.h>
#endif
#if defined ZMQ_HAVE_OPENVMS
#include <ioctl.h>
#endif
#if defined ZMQ_HAVE_SOLARIS
#include <sys/sockio.h>
@@ -367,4 +379,23 @@ void zmq::tune_tcp_socket (fd_t s_)
#endif
}
void zmq::unblock_socket (fd_t s_)
{
#ifdef ZMQ_HAVE_WINDOWS
u_long nonblock = 1;
int rc = ioctlsocket (s_, FIONBIO, &nonblock);
wsa_assert (rc != SOCKET_ERROR);
#elif ZMQ_HAVE_OPENVMS
int nonblock = 1;
int rc = ioctl (s_, FIONBIO, &nonblock);
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
}

8
src/ip.hpp
View File

@@ -35,10 +35,6 @@
#include <netdb.h>
#endif
#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
#include <sys/un.h>
#endif
// Some platforms (notably Darwin/OSX and NetBSD) do not define all AI_
// flags for getaddrinfo(). This can be worked around safely by defining
// these to 0.
@@ -68,6 +64,10 @@ namespace zmq
// Tunes the supplied TCP socket for the best latency.
void tune_tcp_socket (fd_t s_);
// Sets the socket into non-blocking mode.
void unblock_socket (fd_t s_);
}
#endif

178
src/ipc_connecter.cpp
View File

@@ -18,32 +18,24 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ipc_connecter.hpp"
#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
#include <new>
#include <string>
#include "ipc_connecter.hpp"
#include "tcp_engine.hpp"
#include "io_thread.hpp"
#include "platform.hpp"
#include "random.hpp"
#include "ip.hpp"
#include "err.hpp"
#include "ip.hpp"
#if defined ZMQ_HAVE_WINDOWS
#include "windows.hpp"
#else
#include <unistd.h>
#include <sys/types.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
#endif
#include <sys/un.h>
zmq::ipc_connecter_t::ipc_connecter_t (class io_thread_t *io_thread_,
class session_t *session_, const options_t &options_,
@@ -175,84 +167,6 @@ int zmq::ipc_connecter_t::get_new_reconnect_ivl ()
return this_interval;
}
#ifdef ZMQ_HAVE_WINDOWS
int zmq::ipc_connecter_t::set_address (const char *protocol_, const char *addr_)
{
errno = EPROTONOSUPPORT;
return -1;
}
int zmq::ipc_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);
// 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::ipc_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::ipc_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.
if (err == WSAECONNREFUSED || err == WSAETIMEDOUT ||
err == WSAECONNABORTED || err == WSAEHOSTUNREACH ||
err == WSAENETUNREACH || err == WSAENETDOWN)
return retired_fd;
wsa_assert_no (err);
}
// Return the newly connected socket.
fd_t result = s;
s = retired_fd;
return result;
}
#else
int zmq::ipc_connecter_t::set_address (const char *addr_)
{
return resolve_local_path (&addr, &addr_len, addr_);
@@ -263,78 +177,23 @@ int zmq::ipc_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
// 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;
// Create the socket.
zmq_assert (AF_UNIX == sa->sa_family);
s = socket (AF_UNIX, SOCK_STREAM, 0);
if (s == -1)
return -1;
}
#ifndef ZMQ_HAVE_OPENVMS
else {
// Set the non-blocking flag.
unblock_socket (s);
// Create the socket.
zmq_assert (AF_UNIX == sa->sa_family);
s = socket (AF_UNIX, SOCK_STREAM, 0);
if (s == -1)
return -1;
// Connect to the remote peer.
int rc = ::connect (s, (struct sockaddr*) &addr, sizeof (sockaddr_un));
// 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 was successfull immediately.
if (rc == 0)
return 0;
// 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);
// Forward the error.
return -1;
}
@@ -379,3 +238,4 @@ zmq::fd_t zmq::ipc_connecter_t::connect ()
}
#endif

7
src/ipc_connecter.hpp
View File

@@ -21,6 +21,10 @@
#ifndef __IPC_CONNECTER_HPP_INCLUDED__
#define __IPC_CONNECTER_HPP_INCLUDED__
#include "platform.hpp"
#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
#include "fd.hpp"
#include "ip.hpp"
#include "own.hpp"
@@ -110,3 +114,6 @@ namespace zmq
}
#endif
#endif

20
src/signaler.cpp
View File

@@ -71,8 +71,6 @@
#include "windows.hpp"
#else
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>
#include <netinet/tcp.h>
#include <unistd.h>
#include <sys/types.h>
@@ -86,22 +84,8 @@ zmq::signaler_t::signaler_t ()
errno_assert (rc == 0);
// Set both fds to non-blocking mode.
#if defined ZMQ_HAVE_WINDOWS
unsigned long argp = 1;
rc = ioctlsocket (w, FIONBIO, &argp);
wsa_assert (rc != SOCKET_ERROR);
rc = ioctlsocket (r, FIONBIO, &argp);
wsa_assert (rc != SOCKET_ERROR);
#else
int flags = fcntl (w, F_GETFL, 0);
errno_assert (flags >= 0);
rc = fcntl (w, F_SETFL, flags | O_NONBLOCK);
errno_assert (rc == 0);
flags = fcntl (r, F_GETFL, 0);
errno_assert (flags >= 0);
rc = fcntl (r, F_SETFL, flags | O_NONBLOCK);
errno_assert (rc == 0);
#endif
unblock_socket (w);
unblock_socket (r);
}
zmq::signaler_t::~signaler_t ()

193
src/tcp_connecter.cpp
View File

@@ -177,8 +177,6 @@ int zmq::tcp_connecter_t::get_new_reconnect_ivl ()
return this_interval;
}
#ifdef ZMQ_HAVE_WINDOWS
int zmq::tcp_connecter_t::set_address (const char *addr_)
{
return resolve_ip_hostname (&addr, &addr_len, addr_);
@@ -190,61 +188,80 @@ int zmq::tcp_connecter_t::open ()
// Create the socket.
s = socket (addr.ss_family, SOCK_STREAM, IPPROTO_TCP);
#ifdef ZMQ_HAVE_WINDOWS
if (s == INVALID_SOCKET) {
wsa_error_to_errno ();
return -1;
}
#else
if (s == -1)
return -1;
#endif
// Set to non-blocking mode.
unsigned long argp = 1;
int rc = ioctlsocket (s, FIONBIO, &argp);
wsa_assert (rc != SOCKET_ERROR);
// Set the socket to non-blocking mode so that we get async connect().
unblock_socket (s);
// Connect to the remote peer.
rc = ::connect (s, (sockaddr*) &addr, addr_len);
int rc = ::connect (s, (struct sockaddr*) &addr, addr_len);
// Connect was successfull immediately.
if (rc == 0)
return 0;
// Asynchronous connect was launched.
#ifdef ZMQ_HAVE_WINDOWS
if (rc == SOCKET_ERROR && (WSAGetLastError () == WSAEINPROGRESS ||
WSAGetLastError () == WSAEWOULDBLOCK)) {
errno = EAGAIN;
return -1;
}
}
wsa_error_to_errno ();
#else
if (rc == -1 && errno == EINPROGRESS) {
errno = EAGAIN;
return -1;
}
#endif
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::connect ()
{
// Nonblocking connect have finished. Check whether an error occured.
// Async connect have finished. Check whether an error occured.
int err = 0;
socklen_t len = sizeof err;
#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);
// Assert if the error was caused by 0MQ bug.
// Networking problems are OK. No need to assert.
#ifdef ZMQ_HAVE_WINDOWS
zmq_assert (rc == 0);
if (err != 0) {
// Assert that the error was caused by the networking problems
// rather than 0MQ bug.
if (err == WSAECONNREFUSED || err == WSAETIMEDOUT ||
err == WSAECONNABORTED || err == WSAEHOSTUNREACH ||
err == WSAENETUNREACH || err == WSAENETDOWN)
return retired_fd;
wsa_assert_no (err);
}
#else
// Following code should handle both Berkeley-derived socket
// implementations and Solaris.
if (rc == -1)
err = errno;
if (err != 0) {
errno = err;
errno_assert (errno == ECONNREFUSED || errno == ECONNRESET ||
errno == ETIMEDOUT || errno == EHOSTUNREACH ||
errno == ENETUNREACH || errno == ENETDOWN);
return retired_fd;
}
#endif
// Return the newly connected socket.
fd_t result = s;
@@ -252,131 +269,15 @@ zmq::fd_t zmq::tcp_connecter_t::connect ()
return result;
}
#else
int zmq::tcp_connecter_t::set_address (const char *addr_)
{
return resolve_ip_hostname (&addr, &addr_len, addr_);
}
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
// 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 ()
void 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::connect ()
{
// Following code should handle both Berkeley-derived socket
// implementations and Solaris.
int err = 0;
#if defined ZMQ_HAVE_HPUX
int len = sizeof (err);
#ifdef ZMQ_HAVE_WINDOWS
int rc = closesocket (s);
wsa_assert (rc != SOCKET_ERROR);
#else
socklen_t len = sizeof (err);
int rc = ::close (s);
errno_assert (rc == 0);
#endif
int rc = getsockopt (s, SOL_SOCKET, SO_ERROR, (char*) &err, &len);
if (rc == -1)
err = errno;
if (err != 0) {
// Assert if the error was caused by 0MQ bug.
// Networking problems are OK. No need to assert.
errno = err;
errno_assert (errno == ECONNREFUSED || errno == ECONNRESET ||
errno == ETIMEDOUT || errno == EHOSTUNREACH ||
errno == ENETUNREACH || errno == ENETDOWN);
return retired_fd;
}
fd_t result = s;
s = retired_fd;
return result;
}
#endif

2
src/tcp_connecter.hpp
View File

@@ -74,7 +74,7 @@ namespace zmq
int open ();
// Close the connecting socket.
int close ();
void close ();
// Get the file descriptor of newly created connection. Returns
// retired_fd if the connection was unsuccessfull.

27
src/tcp_engine.cpp
View File

@@ -39,6 +39,7 @@
#include "session.hpp"
#include "config.hpp"
#include "err.hpp"
#include "ip.hpp"
zmq::tcp_engine_t::tcp_engine_t (fd_t fd_, const options_t &options_) :
s (fd_),
@@ -53,28 +54,12 @@ zmq::tcp_engine_t::tcp_engine_t (fd_t fd_, const options_t &options_) :
options (options_),
plugged (false)
{
int rc;
// Set the socket to the non-blocking mode.
#ifdef ZMQ_HAVE_WINDOWS
u_long nonblock = 1;
rc = ioctlsocket (s, FIONBIO, &nonblock);
wsa_assert (rc != SOCKET_ERROR);
#elif ZMQ_HAVE_OPENVMS
int nonblock = 1;
rc = ioctl (s, FIONBIO, &nonblock);
errno_assert (rc != -1);
#else
int flags = fcntl (s, F_GETFL, 0);
if (flags == -1)
flags = 0;
rc = fcntl (s, F_SETFL, flags | O_NONBLOCK);
errno_assert (rc != -1);
#endif
// Get the socket into non-blocking mode.
unblock_socket (s);
// Set the socket buffer limits for the underlying socket.
if (options.sndbuf) {
rc = setsockopt (s, SOL_SOCKET, SO_SNDBUF,
int rc = setsockopt (s, SOL_SOCKET, SO_SNDBUF,
(char*) &options.sndbuf, sizeof (int));
#ifdef ZMQ_HAVE_WINDOWS
wsa_assert (rc != SOCKET_ERROR);
@@ -83,7 +68,7 @@ zmq::tcp_engine_t::tcp_engine_t (fd_t fd_, const options_t &options_) :
#endif
}
if (options.rcvbuf) {
rc = setsockopt (s, SOL_SOCKET, SO_RCVBUF,
int rc = setsockopt (s, SOL_SOCKET, SO_RCVBUF,
(char*) &options.rcvbuf, sizeof (int));
#ifdef ZMQ_HAVE_WINDOWS
wsa_assert (rc != SOCKET_ERROR);
@@ -96,7 +81,7 @@ zmq::tcp_engine_t::tcp_engine_t (fd_t fd_, const options_t &options_) :
// Make sure that SIGPIPE signal is not generated when writing to a
// connection that was already closed by the peer.
int set = 1;
rc = setsockopt (s, SOL_SOCKET, SO_NOSIGPIPE, &set, sizeof (int));
int rc = setsockopt (s, SOL_SOCKET, SO_NOSIGPIPE, &set, sizeof (int));
errno_assert (rc == 0);
#endif
}