1 files changed, 90 insertions, 0 deletions
diff --git a/tests/test_many_sockets.cpp b/tests/test_many_sockets.cpp
new file mode 100644
index 0000000..e98a030
--- /dev/null
+++ b/tests/test_many_sockets.cpp
@@ -0,0 +1,90 @@
+/*
+    Copyright (c) 2007-2013 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 "testutil.hpp"
+#include <zmq.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <vector>
+
+void test_system_max ()
+{
+    // Keep allocating sockets until we run out of system resources
+    const int no_of_sockets = 2 * 65536;
+    void *ctx = zmq_ctx_new ();
+    zmq_ctx_set (ctx, ZMQ_MAX_SOCKETS, no_of_sockets);
+    std::vector <void*> sockets;
+
+    while (true) {
+        void *socket = zmq_socket (ctx, ZMQ_PAIR);
+        if (!socket)
+            break;
+        sockets.push_back (socket);
+    }
+    assert ((int) sockets.size () < no_of_sockets);
+
+    //  System is out of resources, further calls to zmq_socket should return NULL
+    for (unsigned int i = 0; i < 10; ++i) {
+        void *socket = zmq_socket (ctx, ZMQ_PAIR);
+        assert (socket == NULL);
+    }
+    // Clean up.
+    for (unsigned int i = 0; i < sockets.size (); ++i)
+        zmq_close (sockets [i]);
+
+    zmq_ctx_destroy (ctx);
+}
+
+void test_zmq_default_max ()
+{
+    //  Keep allocating sockets until we hit the default limit
+    void *ctx = zmq_ctx_new ();
+    std::vector<void*> sockets;
+
+    while (true) {
+        void *socket = zmq_socket (ctx, ZMQ_PAIR);
+        if (!socket)
+            break;
+        sockets.push_back (socket);
+    }
+    //  We may stop sooner if system has fewer available sockets
+    assert (sockets.size () <= ZMQ_MAX_SOCKETS_DFLT);
+
+    //  Further calls to zmq_socket should return NULL
+    for (unsigned int i = 0; i < 10; ++i) {
+        void *socket = zmq_socket (ctx, ZMQ_PAIR);
+        assert (socket == NULL);
+    }
+
+    //  Clean up
+    for (unsigned int i = 0; i < sockets.size (); ++i)
+        zmq_close (sockets [i]);
+
+    zmq_ctx_destroy (ctx);
+}
+
+int main (void)
+{
+    setup_test_environment ();
+
+    test_system_max ();
+    test_zmq_default_max ();
+
+    return 0;
+}