Add disconnect test

Add a new section to the connect delay test that disconnects and
reconnects a socket to ensure that some messages are appropriately
blocked.

tests/test_connect_delay.cpp

@@ -27,6 +27,111 @@
 
 #include "../include/zmq.h"
 
+static void *server (void *c)
+{
+    void *socket, *context;
+    char buffer[16];
+    int rc, val;
+
+    shoulddie = *(long *)sd;
+
+    context = zmq_init (1);
+    assert (context);
+
+    socket = zmq_socket (context, ZMQ_PULL);
+    assert (socket);
+
+    val = 0;
+    rc = zmq_setsockopt(socket, ZMQ_LINGER, &val, sizeof(val));
+    assert (rc == 0);
+
+    rc = zmq_bind (socket, "ipc:///tmp/recon");
+    assert (rc == 0);
+
+    memset (&buffer, 0, sizeof(buffer));
+    rc = zmq_recv (socket, &buffer, sizeof(buffer), 0);
+
+    //  Intentionally bail out
+    rc = zmq_close (socket);
+    assert (rc == 0);
+
+    rc = zmq_term (context);
+    assert (rc == 0);
+
+    usleep (200000);
+
+    context = zmq_init (1);
+    assert (context);
+
+    socket = zmq_socket (context, ZMQ_PULL);
+    assert (socket);
+
+    val = 0;
+    rc = zmq_setsockopt(socket, ZMQ_LINGER, &val, sizeof(val));
+    assert (rc == 0);
+
+    rc = zmq_bind (socket, "ipc:///tmp/recon");
+    assert (rc == 0);
+
+    usleep (200000);
+
+    memset (&buffer, 0, sizeof(buffer));
+    rc = zmq_recv (socket, &buffer, sizeof(buffer), ZMQ_DONTWAIT);
+    assert (rc != -1);
+
+    //  Start closing the socket while the connecting process is underway.
+    rc = zmq_close (socket);
+    assert (rc == 0);
+
+    rc = zmq_term (context);
+    assert (rc == 0);
+
+    pthread_exit(NULL);
+}
+
+static void *worker (void *n)
+{
+    void *socket, *context;
+    int rc, hadone, val;
+
+    context = zmq_init (1);
+    assert (context);
+
+    socket = zmq_socket (context, ZMQ_PUSH);
+    assert (socket);
+
+    val = 0;
+    rc = zmq_setsockopt(socket, ZMQ_LINGER, &val, sizeof(val));
+    assert (rc == 0);
+
+    val = 1;
+    rc = zmq_setsockopt (socket, ZMQ_DELAY_ATTACH_ON_CONNECT, &val, sizeof(val));
+    assert (rc == 0);
+
+    rc = zmq_connect (socket, "ipc:///tmp/recon");
+    assert (rc == 0);
+
+    hadone = 0;
+    //  Not checking RC as some may be -1
+    for (int i = 0; i < 4; i++) {
+        usleep(200000);
+        rc = zmq_send (socket, "hi", 2, ZMQ_DONTWAIT);
+        if (rc != -1) 
+            hadone ++;
+    }
+
+    assert (hadone >= 2);
+    assert (hadone < 4);
+
+    rc = zmq_close (socket);
+    assert (rc == 0);
+
+    rc = zmq_term (context);
+    assert (rc == 0);
+
+    pthread_exit(NULL);
+}
+
 int main (int argc, char *argv [])
 {
     fprintf (stderr, "test_connect_delay running...\n");
@@ -143,5 +248,15 @@ int main (int argc, char *argv [])
     rc = zmq_ctx_destroy(context);
     assert (rc == 0);
 
-    return 0;
+    fprintf (stderr, " Running DELAY_ATTACH_ON_CONNECT with disconnect\n");
+
+    pthread_t serv, work;
+
+    rc = pthread_create (&serv, NULL, server, NULL);
+    assert (rc == 0);
+
+    rc = pthread_create (&work, NULL, worker, NULL);
+    assert (rc == 0);
+    
+    pthread_exit(NULL);
 }