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-rw-r--r--src/Makefile.am6
-rw-r--r--src/app_thread.cpp2
-rw-r--r--src/config.hpp4
-rw-r--r--src/options.cpp4
-rw-r--r--src/options.hpp6
-rw-r--r--src/pgm_sender.cpp224
-rw-r--r--src/pgm_sender.hpp109
-rw-r--r--src/pgm_socket.cpp754
-rw-r--r--src/pgm_socket.hpp153
-rw-r--r--src/socket_base.cpp105
-rw-r--r--src/socket_base.hpp5
-rw-r--r--src/sub.cpp2
12 files changed, 1355 insertions, 19 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index a09c001..ce88b26 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -62,6 +62,8 @@ libzmq_la_SOURCES = $(pgm_sources) \
object.hpp \
options.hpp \
owned.hpp \
+ pgm_sender.hpp \
+ pgm_socket.hpp \
pipe.hpp \
platform.hpp \
poll.hpp \
@@ -102,6 +104,8 @@ libzmq_la_SOURCES = $(pgm_sources) \
object.cpp \
options.cpp \
owned.cpp \
+ pgm_sender.cpp \
+ pgm_socket.cpp \
pipe.cpp \
poll.cpp \
pub.cpp \
@@ -124,7 +128,7 @@ libzmq_la_SOURCES = $(pgm_sources) \
zmq_listener.cpp \
zmq_listener_init.cpp
-libzmq_la_LDFLAGS = -version-info @LTVER@
+libzmq_la_LDFLAGS = -version-info @LTVER@ @LIBZMQ_EXTRA_LDFLAFS@
if BUILD_PGM
libzmq_la_CXXFLAGS = -I$(top_srcdir)/foreign/openpgm/@pgm_basename@/openpgm/pgm/include/ -Wall @LIBZMQ_EXTRA_CXXFLAGS@
diff --git a/src/app_thread.cpp b/src/app_thread.cpp
index c48657a..feaa4d6 100644
--- a/src/app_thread.cpp
+++ b/src/app_thread.cpp
@@ -148,7 +148,7 @@ zmq::socket_base_t *zmq::app_thread_t::create_socket (int type_)
case ZMQ_P2P:
case ZMQ_REQ:
case ZMQ_REP:
- s = new socket_base_t (this);
+ s = new socket_base_t (this, type_);
break;
default:
// TODO: This should be EINVAL.
diff --git a/src/config.hpp b/src/config.hpp
index 17e67b9..43a4513 100644
--- a/src/config.hpp
+++ b/src/config.hpp
@@ -70,8 +70,10 @@ namespace zmq
// Maximal number of non-accepted connections that can be held by
// TCP listener object.
- tcp_connection_backlog = 10
+ tcp_connection_backlog = 10,
+ // Maximum transport data unit size for PGM (TPDU).
+ pgm_max_tpdu = 1500
};
}
diff --git a/src/options.cpp b/src/options.cpp
index cd07c44..804cb4f 100644
--- a/src/options.cpp
+++ b/src/options.cpp
@@ -24,6 +24,8 @@ zmq::options_t::options_t () :
lwm (0),
swap (0),
mask (0),
- affinity (0)
+ affinity (0),
+ rate (0),
+ recovery_ivl (0)
{
}
diff --git a/src/options.hpp b/src/options.hpp
index faf21b8..9f4a264 100644
--- a/src/options.hpp
+++ b/src/options.hpp
@@ -37,6 +37,12 @@ namespace zmq
uint64_t mask;
uint64_t affinity;
std::string identity;
+
+ // Maximum tranfer rate [kb/s].
+ uint32_t rate;
+
+ // Reliability time interval [s].
+ uint32_t recovery_ivl;
};
}
diff --git a/src/pgm_sender.cpp b/src/pgm_sender.cpp
new file mode 100644
index 0000000..60b4c3a
--- /dev/null
+++ b/src/pgm_sender.cpp
@@ -0,0 +1,224 @@
+/*
+ Copyright (c) 2007-2009 FastMQ Inc.
+
+ 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 "platform.hpp"
+
+#if defined ZMQ_HAVE_OPENPGM
+
+#include <iostream>
+
+#include "io_thread.hpp"
+#include "pgm_sender.hpp"
+#include "err.hpp"
+#include "wire.hpp"
+
+//#define PGM_SENDER_DEBUG
+//#define PGM_SENDER_DEBUG_LEVEL 1
+
+// level 1 = key behaviour
+// level 2 = processing flow
+// level 4 = infos
+
+#ifndef PGM_SENDER_DEBUG
+# define zmq_log(n, ...) while (0)
+#else
+# define zmq_log(n, ...) do { if ((n) <= PGM_SENDER_DEBUG_LEVEL) \
+ { printf (__VA_ARGS__);}} while (0)
+#endif
+
+#ifdef ZMQ_HAVE_LINUX
+zmq::pgm_sender_t::pgm_sender_t (io_thread_t *parent_,
+ const options_t &options_, const char *session_name_) :
+ io_object_t (parent_),
+ pgm_socket (false, options_),
+ options (options_),
+ session_name (session_name_),
+ inout (NULL),
+ out_buffer (NULL),
+ out_buffer_size (0),
+ write_size (0),
+ write_pos (0),
+ first_message_offset (-1)
+{
+
+}
+
+int zmq::pgm_sender_t::init (const char *network_)
+{
+ return pgm_socket.init (network_);
+}
+
+void zmq::pgm_sender_t::plug (i_inout *inout_)
+{
+
+ // Alocate 2 fds for PGM socket.
+ int downlink_socket_fd;
+ int uplink_socket_fd;
+
+ encoder.set_inout (inout_);
+
+ // Fill fds from PGM transport.
+ pgm_socket.get_sender_fds (&downlink_socket_fd, &uplink_socket_fd);
+
+ // Add downlink_socket_fd into poller.
+ handle = add_fd (downlink_socket_fd);
+
+ // Add uplink_socket_fd into the poller.
+ uplink_handle = add_fd (uplink_socket_fd);
+
+ // Set POLLIN. We wont never want to stop polling for uplink = we never
+ // want to stop porocess NAKs.
+ set_pollin (uplink_handle);
+
+ // Set POLLOUT for downlink_socket_handle.
+ set_pollout (handle);
+
+ inout = inout_;
+
+ zmq_log (1, "plug: downlink_socket_fd %i, uplink_socket_fd %i, %s(%i)",
+ downlink_socket_fd, uplink_socket_fd, __FILE__, __LINE__);
+
+ std::cout << std::flush;
+}
+
+void zmq::pgm_sender_t::unplug ()
+{
+ rm_fd (handle);
+ rm_fd (uplink_handle);
+ encoder.set_inout (NULL);
+ inout = NULL;
+}
+
+void zmq::pgm_sender_t::revive ()
+{
+ set_pollout (handle);
+}
+
+zmq::pgm_sender_t::~pgm_sender_t ()
+{
+ if (out_buffer) {
+ pgm_socket.free_buffer (out_buffer);
+ }
+}
+
+// In event on sender side means NAK or SPMR receiving from some peer.
+void zmq::pgm_sender_t::in_event ()
+{
+ pgm_socket.process_upstream ();
+}
+
+void zmq::pgm_sender_t::out_event ()
+{
+
+ // POLLOUT event from send socket. If write buffer is empty,
+ // try to read new data from the encoder.
+ if (write_pos == write_size) {
+
+ // Get buffer if we do not have already one.
+ if (!out_buffer) {
+ out_buffer = (unsigned char*)
+ pgm_socket.get_buffer (&out_buffer_size);
+ }
+
+ assert (out_buffer_size > 0);
+
+ // First two bytes /sizeof (uint16_t)/ are used to store message
+ // offset in following steps.
+ write_size = encoder.read (out_buffer + sizeof (uint16_t),
+ out_buffer_size - sizeof (uint16_t), &first_message_offset);
+ write_pos = 0;
+
+ // If there are no data to write stop polling for output.
+ if (!write_size) {
+ reset_pollout (handle);
+ } else {
+ // Addning uint16_t for offset in a case when encoder returned > 0B.
+ write_size += sizeof (uint16_t);
+ }
+ }
+
+ // If there are any data to write, write them into the socket.
+ // Note that all data has to written in one write_one_pkt_with_offset call.
+ if (write_pos < write_size) {
+ size_t nbytes = write_one_pkt_with_offset (out_buffer + write_pos,
+ write_size - write_pos, (uint16_t) first_message_offset);
+
+ // We can write all data or 0 which means rate limit reached.
+ if (write_size - write_pos != nbytes && nbytes != 0) {
+ zmq_log (1, "write_size - write_pos %i, nbytes %i, %s(%i)",
+ (int)(write_size - write_pos), (int)nbytes, __FILE__, __LINE__);
+ assert (false);
+ }
+
+ // PGM rate limit reached nbytes is 0.
+ if (!nbytes) {
+ zmq_log (1, "pgm rate limit reached, %s(%i)\n", __FILE__, __LINE__);
+ }
+
+ // After sending data slice is owned by tx window.
+ if (nbytes) {
+ out_buffer = NULL;
+ }
+
+ write_pos += nbytes;
+ }
+
+}
+
+/*
+void zmq::bp_pgm_sender_t::revive (pipe_t *pipe_)
+{
+ // We have some messages in encoder.
+ if (!shutting_down) {
+
+ // Forward the revive command to the pipe.
+ engine_base_t <false, true>::revive (pipe_);
+
+ // There is at least one engine (that one which sent revive) that
+ // has messages ready. Try to write data to the socket, thus
+ // eliminating one polling for POLLOUT event.
+ // Note that if write_size is zero it means that buffer is empty and
+ // we can read data from encoder.
+ if (!write_size) {
+ poller->set_pollout (handle);
+ out_event (handle);
+ }
+ }
+}
+
+*/
+size_t zmq::pgm_sender_t::write_one_pkt_with_offset (unsigned char *data_,
+ size_t size_, uint16_t offset_)
+{
+ zmq_log (1, "data_size %i, first message offset %i, %s(%i)",
+ (int) size_, offset_, __FILE__, __LINE__);
+
+ std::cout << std::flush;
+
+ // Put offset information in the buffer.
+ put_uint16 (data_, offset_);
+
+ // Send data.
+ size_t nbytes = pgm_socket.send (data_, size_);
+
+ return nbytes;
+}
+#endif
+
+#endif
diff --git a/src/pgm_sender.hpp b/src/pgm_sender.hpp
new file mode 100644
index 0000000..2ad2a15
--- /dev/null
+++ b/src/pgm_sender.hpp
@@ -0,0 +1,109 @@
+/*
+ Copyright (c) 2007-2009 FastMQ Inc.
+
+ 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/>.
+*/
+
+#ifndef __ZMQ_BP_PGM_SENDER_HPP_INCLUDED__
+#define __ZMQ_BP_PGM_SENDER_HPP_INCLUDED__
+
+#include "platform.hpp"
+
+#if defined ZMQ_HAVE_OPENPGM
+
+#include <vector>
+
+#include "stdint.hpp"
+#include "io_object.hpp"
+#include "i_engine.hpp"
+#include "options.hpp"
+#include "pgm_socket.hpp"
+#include "zmq_encoder.hpp"
+
+namespace zmq
+{
+
+ class pgm_sender_t : public io_object_t, public i_engine
+ {
+
+ public:
+ pgm_sender_t (class io_thread_t *parent_, const options_t &options_,
+ const char *session_name_);
+ ~pgm_sender_t ();
+
+ int init (const char *network_);
+
+ // i_engine interface implementation.
+ void plug (struct i_inout *inout_);
+ void unplug ();
+ void revive ();
+
+ // i_poll_events interface implementation.
+ void in_event ();
+ void out_event ();
+
+ private:
+
+ // Send one APDU with first message offset information.
+ // Note that first 2 bytes in data_ are used to store the offset_
+ // and thus user data has to start at data_ + sizeof (uint16_t).
+ size_t write_one_pkt_with_offset (unsigned char *data_, size_t size_,
+ uint16_t offset_);
+
+ // Message encoder.
+ zmq_encoder_t encoder;
+
+ // PGM socket.
+ pgm_socket_t pgm_socket;
+
+ // Socket options.
+ options_t options;
+
+ // Name of the session associated with the connecter.
+ std::string session_name;
+
+ // Poll handle associated with PGM socket.
+ handle_t handle;
+ handle_t uplink_handle;
+
+ // ?
+ i_inout *inout;
+
+ // Output buffer from pgm_socket.
+#ifdef ZMQ_HAVE_WINDOWS
+ unsigned char out_buffer [pgm_win_max_apdu];
+#else
+ unsigned char *out_buffer;
+
+ // Output buffer size.
+ size_t out_buffer_size;
+#endif
+
+ size_t write_size;
+ size_t write_pos;
+
+ // Offset of the first mesage in data chunk taken from encoder.
+ int first_message_offset;
+
+ pgm_sender_t (const pgm_sender_t&);
+ void operator = (const pgm_sender_t&);
+ };
+
+}
+
+#endif
+
+#endif
diff --git a/src/pgm_socket.cpp b/src/pgm_socket.cpp
new file mode 100644
index 0000000..5e2e764
--- /dev/null
+++ b/src/pgm_socket.cpp
@@ -0,0 +1,754 @@
+/*
+ Copyright (c) 2007-2009 FastMQ Inc.
+
+ 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 "platform.hpp"
+
+#if defined ZMQ_HAVE_OPENPGM
+
+#ifdef ZMQ_HAVE_LINUX
+#include <pgm/pgm.h>
+#else
+#include <Winsock2.h>
+#include <Wsrm.h>
+#include <ws2spi.h>
+#endif
+
+#include <string>
+#include <iostream>
+
+#include "options.hpp"
+#include "pgm_socket.hpp"
+#include "config.hpp"
+#include "err.hpp"
+
+//#define PGM_SOCKET_DEBUG
+//#define PGM_SOCKET_DEBUG_LEVEL 1
+
+// level 1 = key behaviour
+// level 2 = processing flow
+// level 4 = infos
+
+#ifndef PGM_SOCKET_DEBUG
+# define zmq_log(n, ...) while (0)
+#else
+# define zmq_log(n, ...) do { if ((n) <= PGM_SOCKET_DEBUG_LEVEL) \
+ { printf (__VA_ARGS__);}} while (0)
+#endif
+
+#ifdef ZMQ_HAVE_LINUX
+
+zmq::pgm_socket_t::pgm_socket_t (bool receiver_, const options_t &options_) :
+ g_transport (NULL),
+ options (options_),
+ receiver (receiver_),
+ port_number (0),
+ udp_encapsulation (false),
+ pgm_msgv (NULL),
+ nbytes_rec (0),
+ nbytes_processed (0),
+ pgm_msgv_processed (0),
+ pgm_msgv_len (0)
+{
+
+}
+
+int zmq::pgm_socket_t::init (const char *network_)
+{
+ // Check if we are encapsulating into UDP, natwork string has to
+ // start with udp:.
+ const char *network_ptr = network_;
+
+ if (strlen (network_) >= 4 && network_ [0] == 'u' &&
+ network_ [1] == 'd' && network_ [2] == 'p' &&
+ network_ [3] == ':') {
+
+ // Shift interface_ptr after ':'.
+ network_ptr += 4;
+
+ udp_encapsulation = true;
+ }
+
+ // Parse port number.
+ const char *port_delim = strchr (network_ptr, ':');
+ if (!port_delim) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ port_number = atoi (port_delim + 1);
+
+ // Store interface string.
+ if (port_delim <= network_ptr) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (port_delim - network_ptr >= (int) sizeof (network) - 1) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ memset (network, '\0', sizeof (network));
+ memcpy (network, network_ptr, port_delim - network_ptr);
+
+
+ zmq_log (1, "parsed: network %s, port %i, udp encaps. %s, %s(%i)\n",
+ network, port_number, udp_encapsulation ? "yes" : "no",
+ __FILE__, __LINE__);
+
+ // Open PGM transport.
+ int rc = open_transport ();
+ if (rc != 0)
+ return -1;
+
+ // For receiver transport preallocate pgm_msgv array.
+ // in_batch_size configured in confing.hpp
+ if (receiver) {
+ pgm_msgv_len = get_max_apdu_at_once (in_batch_size);
+ pgm_msgv = new pgm_msgv_t [pgm_msgv_len];
+ }
+
+ return 0;
+}
+
+int zmq::pgm_socket_t::open_transport (void)
+{
+
+ zmq_log (1, "Opening PGM: network %s, port %i, udp encaps. %s, %s(%i)\n",
+ network, port_number, udp_encapsulation ? "yes" : "no",
+ __FILE__, __LINE__);
+
+ // Can not open transport before destroying old one.
+ zmq_assert (g_transport == NULL);
+
+ // Set actual_tsi and prev_tsi to zeros.
+ memset (&tsi, '\0', sizeof (pgm_tsi_t));
+ memset (&retired_tsi, '\0', sizeof (pgm_tsi_t));
+
+ // Zero counter used in msgrecv.
+ nbytes_rec = 0;
+ nbytes_processed = 0;
+ pgm_msgv_processed = 0;
+
+ // Init PGM transport.
+ // Ensure threading enabled, ensure timer enabled and find PGM protocol id.
+ //
+ // Note that if you want to use gettimeofday and sleep for openPGM timing,
+ // set environment variables PGM_TIMER to "GTOD"
+ // and PGM_SLEEP to "USLEEP".
+ int rc = pgm_init ();
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // PGM transport GSI.
+ pgm_gsi_t gsi;
+
+ // PGM transport GSRs.
+ struct group_source_req recv_gsr, send_gsr;
+ size_t recv_gsr_len = 1;
+
+ rc = pgm_create_md5_gsi (&gsi);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // On success, 0 is returned. On invalid arguments, -EINVAL is returned.
+ // If more multicast groups are found than the recv_len parameter,
+ // -ENOMEM is returned.
+ rc = pgm_if_parse_transport (network, AF_INET, &recv_gsr,
+ &recv_gsr_len, &send_gsr);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (recv_gsr_len != 1) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ // If we are using UDP encapsulation update send_gsr & recv_gsr
+ // structures. Note that send_gsr & recv_gsr has to be updated after
+ // pgm_if_parse_transport call.
+ if (udp_encapsulation) {
+
+ // Use the same port for UDP encapsulation.
+ ((struct sockaddr_in*)&send_gsr.gsr_group)->sin_port =
+ g_htons (port_number);
+ ((struct sockaddr_in*)&recv_gsr.gsr_group)->sin_port =
+ g_htons (port_number);
+ }
+
+ rc = pgm_transport_create (&g_transport, &gsi, 0, port_number, &recv_gsr,
+ 1, &send_gsr);
+ if (rc != 0) {
+ return -1;
+ }
+
+ // Common parameters for receiver and sender.
+
+ // Set maximum transport protocol data unit size (TPDU).
+ rc = pgm_transport_set_max_tpdu (g_transport, pgm_max_tpdu);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Set maximum number of network hops to cross.
+ rc = pgm_transport_set_hops (g_transport, 16);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Receiver transport.
+ if (receiver) {
+
+ // Set transport->may_close_on_failure to true,
+ // after data los recvmsgv returns -1 errno set to ECONNRESET.
+ rc = pgm_transport_set_close_on_failure (g_transport, TRUE);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Set transport->can_send_data = FALSE.
+ // Note that NAKs are still generated by the transport.
+ rc = pgm_transport_set_recv_only (g_transport, false);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Set NAK transmit back-off interval [us].
+ rc = pgm_transport_set_nak_bo_ivl (g_transport, 50*1000);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Set timeout before repeating NAK [us].
+ rc = pgm_transport_set_nak_rpt_ivl (g_transport, 200*1000);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Set timeout for receiving RDATA.
+ rc = pgm_transport_set_nak_rdata_ivl (g_transport, 200*1000);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Set retries for NAK without NCF/DATA (NAK_DATA_RETRIES).
+ rc = pgm_transport_set_nak_data_retries (g_transport, 5);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Set retries for NCF after NAK (NAK_NCF_RETRIES).
+ rc = pgm_transport_set_nak_ncf_retries (g_transport, 2);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Set timeout for removing a dead peer [us].
+ rc = pgm_transport_set_peer_expiry (g_transport, 5*8192*1000);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Set expiration time of SPM Requests [us].
+ rc = pgm_transport_set_spmr_expiry (g_transport, 25*1000);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Set the size of the receive window.
+ //
+ // data rate [B/s] (options.rate is kb/s).
+ if (options.rate <= 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ rc = pgm_transport_set_rxw_max_rte (g_transport,
+ options.rate * 1000 / 8);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Recovery interval [s].
+ if (options.recovery_ivl <= 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ rc = pgm_transport_set_rxw_secs (g_transport, options.recovery_ivl);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Sender transport.
+ } else {
+
+ // Set transport->can_recv = FALSE, waiting_pipe wont not be read.
+ rc = pgm_transport_set_send_only (g_transport, TRUE);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Set the size of the send window.
+ //
+ // data rate [B/s] (options.rate is kb/s).
+ if (options.rate <= 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ rc = pgm_transport_set_txw_max_rte (g_transport,
+ options.rate * 1000 / 8);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Recovery interval [s].
+ if (options.recovery_ivl <= 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ rc = pgm_transport_set_txw_secs (g_transport, options.recovery_ivl);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Preallocate full transmit window. For simplification always
+ // worst case is used (40 bytes ipv6 header and 20 bytes UDP
+ // encapsulation).
+ int to_preallocate = options.recovery_ivl * (options.rate * 1000 / 8)
+ / (pgm_max_tpdu - 40 - 20);
+
+ rc = pgm_transport_set_txw_preallocate (g_transport, to_preallocate);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ zmq_log (1, "Preallocated %i slices in TX window. %s(%i)\n",
+ to_preallocate, __FILE__, __LINE__);
+
+ // Set interval of background SPM packets [us].
+ rc = pgm_transport_set_ambient_spm (g_transport, 8192 * 1000);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Set intervals of data flushing SPM packets [us].
+ guint spm_heartbeat[] = {4 * 1000, 4 * 1000, 8 * 1000, 16 * 1000,
+ 32 * 1000, 64 * 1000, 128 * 1000, 256 * 1000, 512 * 1000,
+ 1024 * 1000, 2048 * 1000, 4096 * 1000, 8192 * 1000};
+
+ rc = pgm_transport_set_heartbeat_spm (g_transport, spm_heartbeat,
+ G_N_ELEMENTS(spm_heartbeat));
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+ }
+
+ // Enable multicast loopback.
+ rc = pgm_transport_set_multicast_loop (g_transport, true);
+ if (rc != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Bind a transport to the specified network devices.
+ rc = pgm_transport_bind (g_transport);
+ if (rc != 0) {
+ return -1;
+ }
+
+ return 0;
+}
+
+zmq::pgm_socket_t::~pgm_socket_t ()
+{
+ // Celanup.
+ if (pgm_msgv) {
+ delete [] pgm_msgv;
+ }
+
+ if (g_transport)
+ close_transport ();
+}
+
+void zmq::pgm_socket_t::close_transport (void)
+{
+ // g_transport has to be valid.
+ zmq_assert (g_transport);
+
+ pgm_transport_destroy (g_transport, TRUE);
+
+ g_transport = NULL;
+}
+
+// Get receiver fds. recv_fd is from transport->recv_sock
+// waiting_pipe_fd is from transport->waiting_pipe [0]
+int zmq::pgm_socket_t::get_receiver_fds (int *recv_fd_,
+ int *waiting_pipe_fd_)
+{
+
+ // For POLLIN there are 2 pollfds in pgm_transport.
+ int fds_array_size = pgm_receiver_fd_count;
+ pollfd *fds = new pollfd [fds_array_size];
+ memset (fds, '\0', fds_array_size * sizeof (fds));
+
+ // Retrieve pollfds from pgm_transport.
+ int rc = pgm_transport_poll_info (g_transport, fds, &fds_array_size,
+ POLLIN);
+
+ // pgm_transport_poll_info has to return 2 pollfds for POLLIN.
+ // Note that fds_array_size parameter can be
+ // changed inside pgm_transport_poll_info call.
+ zmq_assert (rc == pgm_receiver_fd_count);
+
+ // Store pfds into user allocated space.
+ *recv_fd_ = fds [0].fd;
+ *waiting_pipe_fd_ = fds [1].fd;
+
+ delete [] fds;
+
+ return pgm_receiver_fd_count;
+}
+
+// Get fds and store them into user allocated memory.
+// sender_fd is from pgm_transport->send_sock.
+// receive_fd_ is from transport->recv_sock.
+int zmq::pgm_socket_t::get_sender_fds (int *send_fd_, int *receive_fd_)
+{
+
+ // Preallocate pollfds array.
+ int fds_array_size = pgm_sender_fd_count;
+ pollfd *fds = new pollfd [fds_array_size];
+ memset (fds, '\0', fds_array_size * sizeof (fds));
+
+ // Retrieve pollfds from pgm_transport
+ int rc = pgm_transport_poll_info (g_transport, fds, &fds_array_size,
+ POLLOUT | POLLIN);
+
+ // pgm_transport_poll_info has to return one pollfds for POLLOUT and
+ // second for POLLIN.
+ // Note that fds_array_size parameter can be
+ // changed inside pgm_transport_poll_info call.
+ zmq_assert (rc == pgm_sender_fd_count);
+
+ // Store pfds into user allocated space.
+ *receive_fd_ = fds [0].fd;
+ *send_fd_ = fds [1].fd;
+
+ delete [] fds;
+
+ return pgm_sender_fd_count;
+}
+
+// Send one APDU, transmit window owned memory.
+size_t zmq::pgm_socket_t::send (unsigned char *data_, size_t data_len_)
+{
+ iovec iov = {data_,data_len_};
+
+ ssize_t nbytes = pgm_transport_send_packetv (g_transport, &iov, 1,
+ MSG_DONTWAIT | MSG_WAITALL, true);
+
+ zmq_assert (nbytes != -EINVAL);
+
+ if (nbytes == -1 && errno != EAGAIN) {
+ errno_assert (false);
+ }
+
+ // If nbytes is -1 and errno is EAGAIN means that we can not send data
+ // now. We have to call write_one_pkt again.
+ nbytes = nbytes == -1 ? 0 : nbytes;
+
+ zmq_log (4, "wrote %iB, %s(%i)\n", (int)nbytes, __FILE__, __LINE__);
+
+ // We have to write all data as one packet.
+ if (nbytes > 0) {
+ zmq_assert (nbytes == (ssize_t)data_len_);
+ }
+
+ return nbytes;
+}
+
+// Return max TSDU size without fragmentation from current PGM transport.
+size_t zmq::pgm_socket_t::get_max_tsdu_size (void)
+{
+ return (size_t)pgm_transport_max_tsdu (g_transport, false);
+}
+
+// Returns how many APDUs are needed to fill reading buffer.
+size_t zmq::pgm_socket_t::get_max_apdu_at_once (size_t readbuf_size_)
+{
+ zmq_assert (readbuf_size_ > 0);
+
+ // Read max TSDU size without fragmentation.
+ size_t max_tsdu_size = get_max_tsdu_size ();
+
+ // Calculate number of APDUs needed to fill the reading buffer.
+ size_t apdu_count = (int)readbuf_size_ / max_tsdu_size;
+
+ if ((int) readbuf_size_ % max_tsdu_size)
+ apdu_count ++;
+
+ // Have to have at least one APDU.
+ zmq_assert (apdu_count);
+
+ return apdu_count;
+}
+
+// Allocate buffer for one packet from the transmit window, The memory buffer
+// is owned by the transmit window and so must be returned to the window with
+// content via pgm_transport_send() calls or unused with pgm_packetv_free1().
+void *zmq::pgm_socket_t::get_buffer (size_t *size_)
+{
+ // Store size.
+ *size_ = get_max_tsdu_size ();
+
+ // Allocate one packet.
+ return pgm_packetv_alloc (g_transport, false);
+}
+
+// Return an unused packet allocated from the transmit window
+// via pgm_packetv_alloc().
+void zmq::pgm_socket_t::free_buffer (void *data_)
+{
+ pgm_packetv_free1 (g_transport, data_, false);
+}
+
+// pgm_transport_recvmsgv is called to fill the pgm_msgv array up to
+// pgm_msgv_len. In subsequent calls data from pgm_msgv structure are
+// returned.
+ssize_t zmq::pgm_socket_t::receive (void **raw_data_)
+{
+
+ // We just sent all data from pgm_transport_recvmsgv up
+ // and have to return 0 that another engine in this thread is scheduled.
+ if (nbytes_rec == nbytes_processed && nbytes_rec > 0) {
+
+ // Reset all the counters.
+ nbytes_rec = 0;
+ nbytes_processed = 0;
+ pgm_msgv_processed = 0;
+
+ return 0;
+ }
+
+ // If we have are going first time or if we have processed all pgm_msgv_t
+ // structure previaously read from the pgm socket.
+ if (nbytes_rec == nbytes_processed) {
+
+ // Check program flow.
+ zmq_assert (pgm_msgv_processed == 0);
+ zmq_assert (nbytes_processed == 0);
+ zmq_assert (nbytes_rec == 0);
+
+ // Receive a vector of Application Protocol Domain Unit's (APDUs)
+ // from the transport.
+ nbytes_rec = pgm_transport_recvmsgv (g_transport, pgm_msgv,
+ pgm_msgv_len, MSG_DONTWAIT);
+
+ // In a case when no ODATA/RDATA fired POLLIN event (SPM...)
+ // pgm_transport_recvmsg returns -1 with errno == EAGAIN.
+ if (nbytes_rec == -1 && errno == EAGAIN) {
+
+ // In case if no RDATA/ODATA caused POLLIN 0 is
+ // returned.
+ nbytes_rec = 0;
+ return 0;
+ }
+
+ // For data loss nbytes_rec == -1 errno == ECONNRESET.
+ if (nbytes_rec == -1 && errno == ECONNRESET) {
+
+ // In case of dala loss -1 is returned.
+ zmq_log (1, "Data loss detected, %s(%i)\n", __FILE__, __LINE__);
+ nbytes_rec = 0;
+ return -1;
+ }
+
+ // Catch the rest of the errors.
+ if (nbytes_rec <= 0) {
+ zmq_log (1, "received %i B, errno %i, %s(%i)", (int)nbytes_rec,
+ errno, __FILE__, __LINE__);
+ errno_assert (nbytes_rec > 0);
+ }
+
+ zmq_log (4, "received %i bytes\n", (int)nbytes_rec);
+ }
+
+ zmq_assert (nbytes_rec > 0);
+
+ // Only one APDU per pgm_msgv_t structure is allowed.
+ zmq_assert (pgm_msgv [pgm_msgv_processed].msgv_iovlen == 1);
+
+ // Take pointers from pgm_msgv_t structure.
+ *raw_data_ = pgm_msgv[pgm_msgv_processed].msgv_iov->iov_base;
+ size_t raw_data_len = pgm_msgv[pgm_msgv_processed].msgv_iov->iov_len;
+
+ // Check if peer TSI did not change, this is detection of peer restart.
+ const pgm_tsi_t *current_tsi = pgm_msgv [pgm_msgv_processed].msgv_tsi;
+
+ // If empty store new TSI.
+ if (tsi_empty (&tsi)) {
+ // Store current peer TSI.
+ memcpy (&tsi, current_tsi, sizeof (pgm_tsi_t));
+#ifdef PGM_SOCKET_DEBUG
+ uint8_t *gsi = (uint8_t*)(&tsi)->gsi.identifier;
+#endif
+
+ zmq_log (1, "First peer TSI: %i.%i.%i.%i.%i.%i.%i, %s(%i)\n",
+ gsi [0], gsi [1], gsi [2], gsi [3], gsi [4], gsi [5],
+ ntohs (tsi.sport), __FILE__, __LINE__);
+ }
+
+ // Compare stored TSI with actual.
+ if (!tsi_equal (&tsi, current_tsi)) {
+ // Peer change detected.
+ zmq_log (1, "Peer change detected, %s(%i)\n", __FILE__, __LINE__);
+
+ // Compare with retired TSI, in case of match ignore APDU.
+ if (tsi_equal (&retired_tsi, current_tsi)) {
+ zmq_log (1, "Retired TSI - ignoring APDU, %s(%i)\n",
+ __FILE__, __LINE__);
+
+ // Move the the next pgm_msgv_t structure.
+ pgm_msgv_processed++;
+ nbytes_processed +=raw_data_len;
+
+ return 0;
+
+ } else {
+ zmq_log (1, "New TSI, %s(%i)\n", __FILE__, __LINE__);
+
+ // Store new TSI and move last valid to retired_tsi
+ memcpy (&retired_tsi, &tsi, sizeof (pgm_tsi_t));
+ memcpy (&tsi, current_tsi, sizeof (pgm_tsi_t));
+
+#ifdef PGM_SOCKET_DEBUG
+ uint8_t *gsi = (uint8_t*)(&retired_tsi)->gsi.identifier;
+#endif
+ zmq_log (1, "retired TSI: %i.%i.%i.%i.%i.%i.%i, %s(%i)\n",
+ gsi [0], gsi [1], gsi [2], gsi [3], gsi [4], gsi [5],
+ ntohs (retired_tsi.sport), __FILE__, __LINE__);
+
+#ifdef PGM_SOCKET_DEBUG
+ gsi = (uint8_t*)(&tsi)->gsi.identifier;
+#endif
+ zmq_log (1, " TSI: %i.%i.%i.%i.%i.%i.%i, %s(%i)\n",
+ gsi [0], gsi [1], gsi [2], gsi [3], gsi [4], gsi [5],
+ ntohs (tsi.sport), __FILE__, __LINE__);
+
+ // Peers change is recognized as a GAP.
+ return -1;
+ }
+
+ }
+
+ // Move the the next pgm_msgv_t structure.
+ pgm_msgv_processed++;
+ nbytes_processed +=raw_data_len;
+
+ zmq_log (4, "sendig up %i bytes\n", (int)raw_data_len);
+
+ return raw_data_len;
+}
+
+void zmq::pgm_socket_t::process_upstream (void)
+{
+ zmq_log (1, "On upstream packet, %s(%i)\n", __FILE__, __LINE__);
+ // We acctually do not want to read any data here we are going to
+ // process NAK.
+ pgm_msgv_t dummy_msg;
+
+ ssize_t dummy_bytes = pgm_transport_recvmsgv (g_transport, &dummy_msg,
+ 1, MSG_DONTWAIT);
+
+ // No data should be returned.
+ zmq_assert (dummy_bytes == -1 && errno == EAGAIN);
+}
+
+bool zmq::pgm_socket_t::tsi_equal (const pgm_tsi_t *tsi_a_,
+ const pgm_tsi_t *tsi_b_)
+{
+ // Compare 6B GSI.
+ const uint8_t *gsi_a = tsi_a_->gsi.identifier;
+ const uint8_t *gsi_b = tsi_b_->gsi.identifier;
+
+ if (gsi_a [0] != gsi_b [0] || gsi_a [1] != gsi_b [1] ||
+ gsi_a [2] != gsi_b [2] || gsi_a [3] != gsi_b [3] ||
+ gsi_a [4] != gsi_b [4] || gsi_a [5] != gsi_b [5]) {
+
+ return false;
+ }
+
+ // Compare source port.
+ if (tsi_a_->sport != tsi_b_->sport) {
+ return false;
+ }
+
+ return true;
+}
+
+bool zmq::pgm_socket_t::tsi_empty (const pgm_tsi_t *tsi_)
+{
+
+ uint8_t *gsi = (uint8_t*)tsi_->gsi.identifier;
+
+ // GSI.
+ if (gsi [0] != 0 || gsi [1] != 0 || gsi [2] != 0 ||
+ gsi [3] != 0 || gsi [4] != 0 || gsi [5] != 0) {
+ return false;
+ }
+
+ // Source port.
+ if (tsi_->sport != 0) {
+ return false;
+ }
+
+ return true;
+}
+
+#endif
+
+#endif
diff --git a/src/pgm_socket.hpp b/src/pgm_socket.hpp
new file mode 100644
index 0000000..632288d
--- /dev/null
+++ b/src/pgm_socket.hpp
@@ -0,0 +1,153 @@
+/*
+ Copyright (c) 2007-2009 FastMQ Inc.
+
+ 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/>.
+*/
+
+#ifndef __PGM_SOCKET_HPP_INCLUDED__
+#define __PGM_SOCKET_HPP_INCLUDED__
+
+#include "platform.hpp"
+
+#if defined ZMQ_HAVE_OPENPGM
+
+#ifdef ZMQ_HAVE_LINUX
+#include <glib.h>
+#include <pgm/pgm.h>
+#else
+#include <Winsock2.h>
+#endif
+
+#include "stdint.hpp"
+#include "options.hpp"
+
+namespace zmq
+{
+ // Encapsulates PGM socket.
+ class pgm_socket_t
+ {
+
+#ifdef ZMQ_HAVE_LINUX
+
+ public:
+ // If receiver_ is true PGM transport is not generating SPM packets.
+ // interface format: iface;mcast_group:port for raw PGM socket
+ // udp:iface;mcast_goup:port for UDP encapsulacion
+ pgm_socket_t (bool receiver_, const options_t &options_);
+
+ // Closes the transport.
+ ~pgm_socket_t ();
+
+ // Initialize PGM network structures (GSI, GSRs).
+ int init (const char *network_);
+
+ // Open PGM transport. Parameters are the same as in constructor.
+ int open_transport (void);
+
+ // Close transport.
+ void close_transport (void);
+
+ // Get receiver fds and store them into user allocated memory.
+ int get_receiver_fds (int *recv_fd_, int *waiting_pipe_fd_);
+
+ // Get sender and receiver fds and store it to user allocated
+ // memory. Receive fd is used to process NAKs from peers.
+ int get_sender_fds (int *send_fd_, int *receive_fd_);
+
+ // Send data as one APDU, transmit window owned memory.
+ size_t send (unsigned char *data_, size_t data_len_);
+
+ // Allocates one slice for packet in tx window.
+ void *get_buffer (size_t *size_);
+
+ // Fees memory allocated by get_buffer.
+ void free_buffer (void *data_);
+
+ // Receive data from pgm socket.
+ ssize_t receive (void **data_);
+
+ // POLLIN on sender side should mean NAK or SPMR receiving.
+ // process_upstream function is used to handle such a situation.
+ void process_upstream (void);
+
+ protected:
+
+ // OpenPGM transport
+ pgm_transport_t* g_transport;
+
+ private:
+
+ // Associated socket options.
+ options_t options;
+
+ // Returns max tsdu size without fragmentation.
+ size_t get_max_tsdu_size (void);
+
+ // Returns maximum count of apdus which fills readbuf_size_
+ size_t get_max_apdu_at_once (size_t readbuf_size_);
+
+ // Return true if TSI has empty GSI ('\0') and sport 0.
+ bool tsi_empty (const pgm_tsi_t *tsi_);
+
+ // Compare TSIs, return true if equal.
+ bool tsi_equal (const pgm_tsi_t *tsi_a_, const pgm_tsi_t *tsi_b_);
+
+ // true when pgm_socket should create receiving side.
+ bool receiver;
+
+ // TIBCO Rendezvous format network info.
+ char network [256];
+
+ // PGM transport port number.
+ uint16_t port_number;
+
+ // If we are using UDP encapsulation.
+ bool udp_encapsulation;
+
+ // Array of pgm_msgv_t structures to store received data
+ // from the socket (pgm_transport_recvmsgv).
+ pgm_msgv_t *pgm_msgv;
+
+ // How many bytes were read from pgm socket.
+ ssize_t nbytes_rec;
+
+ // How many bytes were processed from last pgm socket read.
+ ssize_t nbytes_processed;
+
+ // How many messages from pgm_msgv were already sent up.
+ ssize_t pgm_msgv_processed;
+
+ // Size of pgm_msgv array.
+ ssize_t pgm_msgv_len;
+
+ // Sender transport uses 2 fd.
+ enum {pgm_sender_fd_count = 2};
+
+ // Receiver transport uses 2 fd.
+ enum {pgm_receiver_fd_count = 2};
+
+ // TSI of the actual peer.
+ pgm_tsi_t tsi;
+
+ // Previous peer TSI.
+ pgm_tsi_t retired_tsi;
+
+#endif
+ };
+}
+#endif
+
+#endif
diff --git a/src/socket_base.cpp b/src/socket_base.cpp
index b4f7d6b..9412d67 100644
--- a/src/socket_base.cpp
+++ b/src/socket_base.cpp
@@ -17,6 +17,8 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <iostream>
+
#include <string>
#include <algorithm>
@@ -35,9 +37,12 @@
#include "uuid.hpp"
#include "pipe.hpp"
#include "err.hpp"
+#include "platform.hpp"
+#include "pgm_sender.hpp"
-zmq::socket_base_t::socket_base_t (app_thread_t *parent_) :
+zmq::socket_base_t::socket_base_t (app_thread_t *parent_, int type_) :
object_t (parent_),
+ type (type_),
current (0),
active (0),
pending_term_acks (0),
@@ -145,6 +150,22 @@ int zmq::socket_base_t::setsockopt (int option_, const void *optval_,
errno = EFAULT;
return -1;
+ case ZMQ_RATE:
+ if (optvallen_ != sizeof (uint32_t)) {
+ errno = EINVAL;
+ return -1;
+ }
+ options.rate = *((int32_t*) optval_);
+ return 0;
+
+ case ZMQ_RECOVERY_IVL:
+ if (optvallen_ != sizeof (uint32_t)) {
+ errno = EINVAL;
+ return -1;
+ }
+ options.recovery_ivl = *((int32_t*) optval_);
+ return 0;
+
default:
errno = EINVAL;
return -1;
@@ -170,6 +191,21 @@ int zmq::socket_base_t::connect (const char *addr_)
std::string session_name ("#");
session_name += uuid_t ().to_string ();
+ // Parse addr_ string.
+ std::string addr_type;
+ std::string addr_args;
+
+ std::string addr (addr_);
+ std::string::size_type pos = addr.find ("://");
+
+ if (pos == std::string::npos) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ addr_type = addr.substr (0, pos);
+ addr_args = addr.substr (pos + 3);
+
// Create the session.
io_thread_t *io_thread = choose_io_thread (options.affinity);
session_t *session = new session_t (io_thread, this, session_name.c_str (),
@@ -198,20 +234,63 @@ int zmq::socket_base_t::connect (const char *addr_)
send_plug (session);
send_own (this, session);
- // Create the connecter object. Supply it with the session name so that
- // it can bind the new connection to the session once it is established.
- zmq_connecter_t *connecter = new zmq_connecter_t (
- choose_io_thread (options.affinity), this, options,
- session_name.c_str ());
- int rc = connecter->set_address (addr_);
- if (rc != 0) {
- delete connecter;
- return -1;
+ if (addr_type == "tcp") {
+
+ // Create the connecter object. Supply it with the session name so that
+ // it can bind the new connection to the session once it is established.
+ zmq_connecter_t *connecter = new zmq_connecter_t (
+ choose_io_thread (options.affinity), this, options,
+ session_name.c_str ());
+ int rc = connecter->set_address (addr_args.c_str ());
+ if (rc != 0) {
+ delete connecter;
+ return -1;
+ }
+ send_plug (connecter);
+ send_own (this, connecter);
+
+ return 0;
}
- send_plug (connecter);
- send_own (this, connecter);
- return 0;
+#if defined ZMQ_HAVE_OPENPGM
+ if (addr_type == "pgm") {
+
+ switch (type) {
+ case ZMQ_PUB:
+ {
+ pgm_sender_t *pgm_sender =
+ new pgm_sender_t (choose_io_thread (options.affinity), options,
+ session_name.c_str ());
+
+ int rc = pgm_sender->init (addr_args.c_str ());
+ if (rc != 0) {
+ delete pgm_sender;
+ return -1;
+ }
+
+ // Reserve a sequence number for following 'attach' command.
+ session->inc_seqnum ();
+ send_attach (session, pgm_sender);
+
+ pgm_sender = NULL;
+
+ break;
+ }
+ case ZMQ_SUB:
+ zmq_assert (false);
+ break;
+ default:
+ errno = EINVAL;
+ return -1;
+ }
+
+ return 0;
+ }
+#endif
+
+ // Unknown address type.
+ errno = ENOTSUP;
+ return -1;
}
int zmq::socket_base_t::send (::zmq_msg_t *msg_, int flags_)
diff --git a/src/socket_base.hpp b/src/socket_base.hpp
index 5711dbe..398cd32 100644
--- a/src/socket_base.hpp
+++ b/src/socket_base.hpp
@@ -38,7 +38,7 @@ namespace zmq
{
public:
- socket_base_t (class app_thread_t *parent_);
+ socket_base_t (class app_thread_t *parent_, int type_);
virtual ~socket_base_t ();
// Interface for communication with the API layer.
@@ -87,6 +87,9 @@ namespace zmq
// fair queueing.
bool fetch (struct zmq_msg_t *msg_);
+ // Type of the socket.
+ int type;
+
// List of all I/O objects owned by this socket. The socket is
// responsible for deallocating them before it quits.
typedef std::set <class owned_t*> io_objects_t;
diff --git a/src/sub.cpp b/src/sub.cpp
index d4545b5..51e0c23 100644
--- a/src/sub.cpp
+++ b/src/sub.cpp
@@ -23,7 +23,7 @@
#include "err.hpp"
zmq::sub_t::sub_t (class app_thread_t *parent_) :
- socket_base_t (parent_),
+ socket_base_t (parent_, ZMQ_SUB),
all_count (0)
{
}