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-rw-r--r--src/Makefile.am2
-rw-r--r--src/session.cpp13
-rw-r--r--src/tcp_connecter.hpp3
-rw-r--r--src/vtcp_connecter.cpp249
-rw-r--r--src/vtcp_connecter.hpp121
-rw-r--r--src/vtcp_listener.cpp13
6 files changed, 394 insertions, 7 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index 73ba62e..1da5be9 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -64,6 +64,7 @@ libzmq_la_SOURCES = \
tcp_listener.hpp \
thread.hpp \
trie.hpp \
+ vtcp_connecter.hpp \
vtcp_listener.hpp \
windows.hpp \
wire.hpp \
@@ -118,6 +119,7 @@ libzmq_la_SOURCES = \
tcp_listener.cpp \
thread.cpp \
trie.cpp \
+ vtcp_connecter.cpp \
vtcp_listener.cpp \
xpub.cpp \
xrep.cpp \
diff --git a/src/session.cpp b/src/session.cpp
index d14b58c..b857724 100644
--- a/src/session.cpp
+++ b/src/session.cpp
@@ -25,6 +25,7 @@
#include "pipe.hpp"
#include "likely.hpp"
#include "tcp_connecter.hpp"
+#include "vtcp_connecter.hpp"
#include "pgm_sender.hpp"
#include "pgm_receiver.hpp"
@@ -315,6 +316,18 @@ void zmq::session_t::start_connecting (bool wait_)
return;
}
+#if defined ZMQ_HAVE_VTCP
+ if (protocol == "vtcp") {
+
+ vtcp_connecter_t *connecter = new (std::nothrow) vtcp_connecter_t (
+ io_thread, this, options, address.c_str (),
+ wait_);
+ alloc_assert (connecter);
+ launch_child (connecter);
+ return;
+ }
+#endif
+
#if defined ZMQ_HAVE_OPENPGM
// Both PGM and EPGM transports are using the same infrastructure.
diff --git a/src/tcp_connecter.hpp b/src/tcp_connecter.hpp
index 524e9cc..41f2c93 100644
--- a/src/tcp_connecter.hpp
+++ b/src/tcp_connecter.hpp
@@ -30,9 +30,6 @@
namespace zmq
{
- // A base class for different connecters. It handles auto-reconnection
- // on behalf of the derived class.
-
class tcp_connecter_t : public own_t, public io_object_t
{
public:
diff --git a/src/vtcp_connecter.cpp b/src/vtcp_connecter.cpp
new file mode 100644
index 0000000..cda469b
--- /dev/null
+++ b/src/vtcp_connecter.cpp
@@ -0,0 +1,249 @@
+/*
+ Copyright (c) 2007-2011 iMatix Corporation
+ Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
+
+ This file is part of 0MQ.
+
+ 0MQ is free software; you can redistribute it and/or modify it under
+ the terms of the GNU Lesser 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
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "vtcp_connecter.hpp"
+
+#if defined ZMQ_HAVE_VTCP
+
+#include <new>
+#include <string>
+
+#include "tcp_engine.hpp"
+#include "io_thread.hpp"
+#include "platform.hpp"
+#include "ip.hpp"
+#include "err.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
+
+zmq::vtcp_connecter_t::vtcp_connecter_t (class io_thread_t *io_thread_,
+ class session_t *session_, const options_t &options_,
+ const char *address_, bool wait_) :
+ own_t (io_thread_, options_),
+ io_object_t (io_thread_),
+ s (retired_fd),
+ handle_valid (false),
+ wait (wait_),
+ session (session_),
+ current_reconnect_ivl(options.reconnect_ivl)
+{
+ memset (&addr, 0, sizeof (addr));
+ addr_len = 0;
+ subport = 0;
+
+ int rc = set_address (address_);
+ zmq_assert (rc == 0);
+}
+
+zmq::vtcp_connecter_t::~vtcp_connecter_t ()
+{
+ if (wait)
+ cancel_timer (reconnect_timer_id);
+ if (handle_valid)
+ rm_fd (handle);
+
+ if (s != retired_fd)
+ close ();
+}
+
+int zmq::vtcp_connecter_t::set_address (const char *addr_)
+{
+ const char *delimiter = strrchr (addr_, '.');
+ if (!delimiter) {
+ errno = EINVAL;
+ return -1;
+ }
+ std::string addr_str (addr_, delimiter - addr_);
+ std::string subport_str (delimiter + 1);
+ subport = (vtcp_subport_t) atoi (subport_str.c_str ());
+ int rc = resolve_ip_hostname (&addr, &addr_len, addr_str.c_str ());
+ if (rc != 0)
+ return -1;
+
+ return 0;
+}
+
+void zmq::vtcp_connecter_t::process_plug ()
+{
+ if (wait)
+ add_reconnect_timer();
+ else
+ start_connecting ();
+}
+
+void zmq::vtcp_connecter_t::in_event ()
+{
+ // We are not polling for incomming data, so we are actually called
+ // because of error here. However, we can get error on out event as well
+ // on some platforms, so we'll simply handle both events in the same way.
+ out_event ();
+}
+
+void zmq::vtcp_connecter_t::out_event ()
+{
+ fd_t fd = connect ();
+ rm_fd (handle);
+ handle_valid = false;
+
+ // Handle the error condition by attempt to reconnect.
+ if (fd == retired_fd) {
+ close ();
+ wait = true;
+ add_reconnect_timer();
+ return;
+ }
+
+ // Create the engine object for this connection.
+ tcp_engine_t *engine = new (std::nothrow) tcp_engine_t (fd, options);
+ alloc_assert (engine);
+
+ // Attach the engine to the corresponding session object.
+ send_attach (session, engine);
+
+ // Shut the connecter down.
+ terminate ();
+}
+
+void zmq::vtcp_connecter_t::timer_event (int id_)
+{
+ zmq_assert (id_ == reconnect_timer_id);
+ wait = false;
+ start_connecting ();
+}
+
+void zmq::vtcp_connecter_t::start_connecting ()
+{
+ // Open the connecting socket.
+ int rc = open ();
+
+ // Connect may succeed in synchronous manner.
+ if (rc == 0) {
+ handle = add_fd (s);
+ handle_valid = true;
+ out_event ();
+ return;
+ }
+
+ // Connection establishment may be dealyed. Poll for its completion.
+ else if (rc == -1 && errno == EAGAIN) {
+ handle = add_fd (s);
+ handle_valid = true;
+ set_pollout (handle);
+ return;
+ }
+
+ // Handle any other error condition by eventual reconnect.
+ wait = true;
+ add_reconnect_timer();
+}
+
+void zmq::vtcp_connecter_t::add_reconnect_timer()
+{
+ add_timer (get_new_reconnect_ivl(), reconnect_timer_id);
+}
+
+int zmq::vtcp_connecter_t::get_new_reconnect_ivl ()
+{
+#if defined ZMQ_HAVE_WINDOWS
+ int pid = (int) GetCurrentProcessId ();
+#else
+ int pid = (int) getpid ();
+#endif
+
+ // The new interval is the current interval + random value.
+ int this_interval = current_reconnect_ivl +
+ ((pid * 13) % options.reconnect_ivl);
+
+ // Only change the current reconnect interval if the maximum reconnect
+ // interval was set and if it's larger than the reconnect interval.
+ if (options.reconnect_ivl_max > 0 &&
+ options.reconnect_ivl_max > options.reconnect_ivl) {
+
+ // Calculate the next interval
+ current_reconnect_ivl = current_reconnect_ivl * 2;
+ if(current_reconnect_ivl >= options.reconnect_ivl_max) {
+ current_reconnect_ivl = options.reconnect_ivl_max;
+ }
+ }
+ return this_interval;
+}
+
+int zmq::vtcp_connecter_t::open ()
+{
+ zmq_assert (s == retired_fd);
+
+ uint16_t port = ntohs (((sockaddr_in*) &addr)->sin_port);
+ s = vtcp_connect (*(in_addr_t*) &addr, port);
+
+ // Connect was successfull immediately.
+ if (s != retired_fd)
+ return 0;
+
+ // Asynchronous connect was launched.
+ if (errno == EINPROGRESS) {
+ errno = EAGAIN;
+ return -1;
+ }
+
+ // Error occured.
+ return -1;
+}
+
+zmq::fd_t zmq::vtcp_connecter_t::connect ()
+{
+ int rc = vtcp_acceptc (s, subport);
+ if (rc != 0) {
+ int err = errno;
+ close ();
+ errno = err;
+ return retired_fd;
+ }
+
+ fd_t result = s;
+ s = retired_fd;
+ return result;
+}
+
+int zmq::vtcp_connecter_t::close ()
+{
+ zmq_assert (s != retired_fd);
+ int rc = ::close (s);
+ if (rc != 0)
+ return -1;
+ s = retired_fd;
+ return 0;
+}
+
+#endif
+
diff --git a/src/vtcp_connecter.hpp b/src/vtcp_connecter.hpp
new file mode 100644
index 0000000..61a592f
--- /dev/null
+++ b/src/vtcp_connecter.hpp
@@ -0,0 +1,121 @@
+/*
+ Copyright (c) 2007-2011 iMatix Corporation
+ Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
+
+ This file is part of 0MQ.
+
+ 0MQ is free software; you can redistribute it and/or modify it under
+ the terms of the GNU Lesser 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
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __VTCP_CONNECTER_HPP_INCLUDED__
+#define __VTCP_CONNECTER_HPP_INCLUDED__
+
+#include "platform.hpp"
+
+#if defined ZMQ_HAVE_VTCP
+
+#include <vtcp.h>
+
+#include "fd.hpp"
+#include "ip.hpp"
+#include "own.hpp"
+#include "io_object.hpp"
+#include "stdint.hpp"
+
+namespace zmq
+{
+
+ class vtcp_connecter_t : public own_t, public io_object_t
+ {
+ public:
+
+ // If 'delay' is true connecter first waits for a while, then starts
+ // connection process.
+ vtcp_connecter_t (class io_thread_t *io_thread_,
+ class session_t *session_, const options_t &options_,
+ const char *address_, bool delay_);
+ ~vtcp_connecter_t ();
+
+ private:
+
+ // ID of the timer used to delay the reconnection.
+ enum {reconnect_timer_id = 1};
+
+ // Handlers for incoming commands.
+ void process_plug ();
+
+ // Handlers for I/O events.
+ void in_event ();
+ void out_event ();
+ void timer_event (int id_);
+
+ // Internal function to start the actual connection establishment.
+ void start_connecting ();
+
+ // Internal function to add a reconnect timer
+ void add_reconnect_timer();
+
+ // Internal function to return a reconnect backoff delay.
+ // Will modify the current_reconnect_ivl used for next call
+ // Returns the currently used interval
+ int get_new_reconnect_ivl ();
+
+ // Set address to connect to.
+ int set_address (const char *addr_);
+
+ // Open TCP connecting socket. Returns -1 in case of error,
+ // 0 if connect was successfull immediately and 1 if async connect
+ // was launched.
+ int open ();
+
+ // Close the connecting socket.
+ int close ();
+
+ // Get the file descriptor of newly created connection. Returns
+ // retired_fd if the connection was unsuccessfull.
+ fd_t connect ();
+
+ // Address to connect to.
+ sockaddr_storage addr;
+ socklen_t addr_len;
+ vtcp_subport_t subport;
+
+ // Underlying socket.
+ fd_t s;
+
+ // Handle corresponding to the listening socket.
+ handle_t handle;
+
+ // If true file descriptor is registered with the poller and 'handle'
+ // contains valid value.
+ bool handle_valid;
+
+ // If true, connecter is waiting a while before trying to connect.
+ bool wait;
+
+ // Reference to the session we belong to.
+ class session_t *session;
+
+ // Current reconnect ivl, updated for backoff strategy
+ int current_reconnect_ivl;
+
+ vtcp_connecter_t (const vtcp_connecter_t&);
+ const vtcp_connecter_t &operator = (const vtcp_connecter_t&);
+ };
+
+}
+
+#endif
+
+#endif
diff --git a/src/vtcp_listener.cpp b/src/vtcp_listener.cpp
index 31fb9ac..60fad8c 100644
--- a/src/vtcp_listener.cpp
+++ b/src/vtcp_listener.cpp
@@ -50,15 +50,20 @@ zmq::vtcp_listener_t::~vtcp_listener_t ()
int zmq::vtcp_listener_t::set_address (const char *addr_)
{
- // Find the '.' at end that separates NIC name from service.
+ // VTCP doesn't allow for binding to a specific interface. Connection
+ // string has to begin with *: (INADDR_ANY).
+ if (strlen (addr_) < 2 || addr_ [0] != '*' || addr_ [1] != ':') {
+ errno = EADDRNOTAVAIL;
+ return -1;
+ }
+
+ // Parse port and subport.
const char *delimiter = strrchr (addr_, '.');
if (!delimiter) {
errno = EINVAL;
return -1;
}
-
- // Parse port and subport.
- std::string port_str (addr_, delimiter - addr_);
+ std::string port_str (addr_ + 2, delimiter - addr_ - 2);
std::string subport_str (delimiter + 1);
uint16_t port = (uint16_t) atoi (port_str.c_str ());
uint32_t subport = (uint32_t) atoi (subport_str.c_str ());
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 15:32:01 +0000