Added test for ZMQ_DGRAM socket type (unicast and multicast)

tests/test_dgram.cpp

@@ -0,0 +1,165 @@
+/*
+    Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
+
+    This file is part of libzmq, the ZeroMQ core engine in C++.
+
+    libzmq is free software; you can redistribute it and/or modify it under
+    the terms of the GNU Lesser General Public License (LGPL) as published
+    by the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    As a special exception, the Contributors give you permission to link
+    this library with independent modules to produce an executable,
+    regardless of the license terms of these independent modules, and to
+    copy and distribute the resulting executable under terms of your choice,
+    provided that you also meet, for each linked independent module, the
+    terms and conditions of the license of that module. An independent
+    module is a module which is not derived from or based on this library.
+    If you modify this library, you must extend this exception to your
+    version of the library.
+
+    libzmq 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 "testutil.hpp"
+
+int str_send_to (void *s_, const char *content_, const void *address_, const size_t addrlen_)
+{
+    zmq_msg_t msg;
+  
+    int rc = zmq_msg_init_size (&msg, addrlen_);
+    if (rc != 0)
+        return rc;
+
+    if (address_ != NULL)
+        memcpy (zmq_msg_data (&msg), address_, addrlen_);
+
+    rc = zmq_msg_send (&msg, s_, ZMQ_SNDMORE);
+    if (rc != 0) {
+        zmq_msg_close (&msg);
+        return rc;
+    }
+    
+    zmq_msg_close (&msg);
+    
+    rc = zmq_msg_init_size (&msg, strlen(content_));
+    if (rc != 0)
+        return rc;
+
+    memcpy (zmq_msg_data (&msg), content_, strlen(content_));
+    
+    rc = zmq_msg_send (&msg, s_, 0);
+
+    zmq_msg_close (&msg);
+
+    return rc;
+}
+
+int str_recv_from (void *s_, char **ptr_content_, void **ptr_address_, size_t *ptr_addrlen_)
+{
+    zmq_msg_t msg;
+  
+    int rc = zmq_msg_init (&msg);
+    if (rc != 0)
+        return -1;
+
+    rc = zmq_msg_recv (&msg, s_, ZMQ_RCVMORE);
+    if (rc == -1) {
+        zmq_msg_close(&msg);
+        return -1;
+    }
+
+    *ptr_addrlen_ = zmq_msg_size (&msg);
+    *ptr_address_ = malloc( *ptr_addrlen_ );
+    memcpy (*ptr_address_, zmq_msg_data (&msg), *ptr_addrlen_);
+    
+    rc = zmq_msg_recv (&msg, s_, 0);
+    if (rc == -1) {
+        zmq_msg_close(&msg);
+        return -1;
+    }
+    
+    *ptr_content_ = (char*) malloc (sizeof(char) * (zmq_msg_size (&msg) + 1));
+    memcpy (*ptr_content_, zmq_msg_data (&msg), zmq_msg_size (&msg));
+    *ptr_content_ [zmq_msg_size (&msg)] = '\0';
+    
+    printf( "received string: %s", *ptr_content_ );
+
+    zmq_msg_close (&msg);
+
+    return rc;
+}
+
+int main (void)
+{
+    setup_test_environment ();
+    void *ctx = zmq_ctx_new ();
+    assert (ctx);
+    
+    char* message_string;
+    void* address;
+    size_t address_length;
+
+    void *sender = zmq_socket (ctx, ZMQ_DGRAM);
+    void *listener = zmq_socket (ctx, ZMQ_DGRAM);
+
+    int rc = zmq_bind (listener, "udp://*:5556");
+    assert (rc == 0);
+
+    rc = zmq_connect (sender, "udp://127.0.0.1:5556");
+    assert (rc == 0);
+
+    msleep (SETTLE_TIME);
+
+    rc = str_send_to (sender, "Is someone there ?", NULL, 0);
+    assert (rc == 0);
+
+    rc = str_recv_from (listener, &message_string, &address, &address_length);
+    assert (rc == 0);
+    assert (address_length == sizeof(sockaddr_in));
+    
+    rc = str_send_to (sender, "Yes, there is !", address, address_length);
+    assert (rc == 0);
+
+    rc = zmq_close (sender);
+    assert (rc == 0);
+
+    rc = zmq_close (listener);
+    assert (rc == 0);
+    
+    
+    rc = zmq_bind (listener, "udp://226.1.1.1:5556");
+    assert (rc == 0);
+
+    rc = zmq_connect (sender, "udp://226.1.1.1:5556");
+    assert (rc == 0);
+
+    msleep (SETTLE_TIME);
+
+    rc = str_send_to (sender, "Is someone there [MULTICAST]?", NULL, 0);
+    assert (rc == 0);
+
+    rc = str_recv_from (listener, &message_string, &address, &address_length);
+    assert (rc == 0);
+    assert (address_length == sizeof(sockaddr_in));
+    
+    rc = str_send_to (sender, "Yes, there is [MULTICAST]!", address, address_length);
+    assert (rc == 0);
+
+    rc = zmq_close (sender);
+    assert (rc == 0);
+
+    rc = zmq_close (listener);
+    assert (rc == 0);
+
+    rc = zmq_ctx_term (ctx);
+    assert (rc == 0);
+
+    return 0 ;
+}