mirror of
https://github.com/zeromq/libzmq.git
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282 lines
9.8 KiB
C++
282 lines
9.8 KiB
C++
/*
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Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
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This file is part of libzmq, the ZeroMQ core engine in C++.
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libzmq is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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As a special exception, the Contributors give you permission to link
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this library with independent modules to produce an executable,
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regardless of the license terms of these independent modules, and to
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copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the
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terms and conditions of the license of that module. An independent
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module is a module which is not derived from or based on this library.
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If you modify this library, you must extend this exception to your
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version of the library.
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libzmq is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "testutil.hpp"
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static const int SERVER = 0;
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static const int CLIENT = 1;
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struct test_message_t {
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int turn;
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const char * text;
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};
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// NOTE: messages are sent without null terminator.
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const test_message_t dialog [] = {
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{CLIENT, "i can haz cheez burger?"},
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{SERVER, "y u no disonnect?"},
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{CLIENT, ""},
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};
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const int steps = sizeof(dialog) / sizeof(dialog[0]);
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bool has_more (void* socket)
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{
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int more = 0;
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size_t more_size = sizeof(more);
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int rc = zmq_getsockopt (socket, ZMQ_RCVMORE, &more, &more_size);
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if (rc != 0)
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return false;
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return more != 0;
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}
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bool get_identity (void* socket, char* data, size_t* size)
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{
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int rc = zmq_getsockopt (socket, ZMQ_IDENTITY, data, size);
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return rc == 0;
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}
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int main(int, char**)
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{
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setup_test_environment();
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void *context = zmq_ctx_new ();
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void *sockets [2];
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int rc = 0;
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sockets [SERVER] = zmq_socket (context, ZMQ_STREAM);
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int enabled = 1;
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rc = zmq_setsockopt (sockets [SERVER], ZMQ_STREAM_NOTIFY, &enabled, sizeof (enabled));
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assert (rc == 0);
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rc = zmq_bind (sockets [SERVER], "tcp://0.0.0.0:6666");
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assert (rc == 0);
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sockets [CLIENT] = zmq_socket (context, ZMQ_STREAM);
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rc = zmq_setsockopt (sockets [CLIENT], ZMQ_STREAM_NOTIFY, &enabled, sizeof (enabled));
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assert (rc == 0);
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rc = zmq_connect (sockets [CLIENT], "tcp://localhost:6666");
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assert (rc == 0);
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// wait for connect notification
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// Server: Grab the 1st frame (peer identity).
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zmq_msg_t peer_frame;
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rc = zmq_msg_init (&peer_frame);
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assert (rc == 0);
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rc = zmq_msg_recv (&peer_frame, sockets [SERVER], 0);
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assert (rc != -1);
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assert(zmq_msg_size (&peer_frame) > 0);
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assert (has_more (sockets [SERVER]));
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rc = zmq_msg_close (&peer_frame);
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assert (rc == 0);
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// Server: Grab the 2nd frame (actual payload).
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zmq_msg_t data_frame;
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rc = zmq_msg_init (&data_frame);
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assert (rc == 0);
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rc = zmq_msg_recv (&data_frame, sockets [SERVER], 0);
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assert (rc != -1);
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assert(zmq_msg_size (&data_frame) == 0);
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rc = zmq_msg_close (&data_frame);
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assert (rc == 0);
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// Client: Grab the 1st frame (peer identity).
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rc = zmq_msg_init (&peer_frame);
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assert (rc == 0);
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rc = zmq_msg_recv (&peer_frame, sockets [CLIENT], 0);
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assert (rc != -1);
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assert(zmq_msg_size (&peer_frame) > 0);
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assert (has_more (sockets [CLIENT]));
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rc = zmq_msg_close (&peer_frame);
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assert (rc == 0);
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// Client: Grab the 2nd frame (actual payload).
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rc = zmq_msg_init (&data_frame);
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assert (rc == 0);
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rc = zmq_msg_recv (&data_frame, sockets [CLIENT], 0);
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assert (rc != -1);
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assert(zmq_msg_size (&data_frame) == 0);
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rc = zmq_msg_close (&data_frame);
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assert (rc == 0);
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// Send initial message.
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char blob_data [256];
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size_t blob_size = sizeof(blob_data);
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rc = zmq_getsockopt (sockets [CLIENT], ZMQ_IDENTITY, blob_data, &blob_size);
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assert (rc != -1);
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assert(blob_size > 0);
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zmq_msg_t msg;
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rc = zmq_msg_init_size (&msg, blob_size);
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assert (rc == 0);
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memcpy (zmq_msg_data (&msg), blob_data, blob_size);
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rc = zmq_msg_send (&msg, sockets [dialog [0].turn], ZMQ_SNDMORE);
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assert (rc != -1);
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rc = zmq_msg_close (&msg);
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assert (rc == 0);
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rc = zmq_msg_init_size (&msg, strlen(dialog [0].text));
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assert (rc == 0);
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memcpy (zmq_msg_data (&msg), dialog [0].text, strlen(dialog [0].text));
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rc = zmq_msg_send (&msg, sockets [dialog [0].turn], ZMQ_SNDMORE);
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assert (rc != -1);
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rc = zmq_msg_close (&msg);
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assert (rc == 0);
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// TODO: make sure this loop doesn't loop forever if something is wrong
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// with the test (or the implementation).
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int step = 0;
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while (step < steps) {
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// Wait until something happens.
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zmq_pollitem_t items [] = {
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{ sockets [SERVER], 0, ZMQ_POLLIN, 0 },
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{ sockets [CLIENT], 0, ZMQ_POLLIN, 0 },
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};
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int rc = zmq_poll (items, 2, 100);
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assert (rc >= 0);
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// Check for data received by the server.
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if (items [SERVER].revents & ZMQ_POLLIN) {
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assert (dialog [step].turn == CLIENT);
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// Grab the 1st frame (peer identity).
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zmq_msg_t peer_frame;
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rc = zmq_msg_init (&peer_frame);
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assert (rc == 0);
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rc = zmq_msg_recv (&peer_frame, sockets [SERVER], 0);
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assert (rc != -1);
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assert(zmq_msg_size (&peer_frame) > 0);
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assert (has_more (sockets [SERVER]));
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// Grab the 2nd frame (actual payload).
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zmq_msg_t data_frame;
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rc = zmq_msg_init (&data_frame);
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assert (rc == 0);
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rc = zmq_msg_recv (&data_frame, sockets [SERVER], 0);
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assert (rc != -1);
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// Make sure payload matches what we expect.
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const char * const data = (const char*)zmq_msg_data (&data_frame);
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const int size = zmq_msg_size (&data_frame);
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// 0-length frame is a disconnection notification. The server
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// should receive it as the last step in the dialogue.
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if (size == 0) {
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++step;
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assert (step == steps);
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}
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else {
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assert ((size_t) size == strlen (dialog [step].text));
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int cmp = memcmp (dialog [step].text, data, size);
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assert (cmp == 0);
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++step;
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assert (step < steps);
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// Prepare the response.
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rc = zmq_msg_close (&data_frame);
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assert (rc == 0);
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rc = zmq_msg_init_size (&data_frame,
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strlen (dialog [step].text));
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assert (rc == 0);
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memcpy (zmq_msg_data (&data_frame), dialog [step].text,
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zmq_msg_size (&data_frame));
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// Send the response.
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rc = zmq_msg_send (&peer_frame, sockets [SERVER], ZMQ_SNDMORE);
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assert (rc != -1);
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rc = zmq_msg_send (&data_frame, sockets [SERVER], ZMQ_SNDMORE);
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assert (rc != -1);
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}
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// Release resources.
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rc = zmq_msg_close (&peer_frame);
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assert (rc == 0);
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rc = zmq_msg_close (&data_frame);
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assert (rc == 0);
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}
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// Check for data received by the client.
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if (items [CLIENT].revents & ZMQ_POLLIN) {
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assert (dialog [step].turn == SERVER);
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// Grab the 1st frame (peer identity).
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zmq_msg_t peer_frame;
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rc = zmq_msg_init (&peer_frame);
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assert (rc == 0);
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rc = zmq_msg_recv (&peer_frame, sockets [CLIENT], 0);
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assert (rc != -1);
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assert(zmq_msg_size (&peer_frame) > 0);
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assert (has_more (sockets [CLIENT]));
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// Grab the 2nd frame (actual payload).
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zmq_msg_t data_frame;
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rc = zmq_msg_init (&data_frame);
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assert (rc == 0);
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rc = zmq_msg_recv (&data_frame, sockets [CLIENT], 0);
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assert (rc != -1);
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assert(zmq_msg_size (&data_frame) > 0);
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// Make sure payload matches what we expect.
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const char * const data = (const char*)zmq_msg_data (&data_frame);
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const int size = zmq_msg_size (&data_frame);
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assert ((size_t)size == strlen(dialog [step].text));
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int cmp = memcmp(dialog [step].text, data, size);
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assert (cmp == 0);
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++step;
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// Prepare the response (next line in the dialog).
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assert (step < steps);
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rc = zmq_msg_close (&data_frame);
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assert (rc == 0);
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rc = zmq_msg_init_size (&data_frame, strlen (dialog [step].text));
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assert (rc == 0);
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memcpy (zmq_msg_data (&data_frame), dialog [step].text, zmq_msg_size (&data_frame));
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// Send the response.
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rc = zmq_msg_send (&peer_frame, sockets [CLIENT], ZMQ_SNDMORE);
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assert (rc != -1);
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rc = zmq_msg_send (&data_frame, sockets [CLIENT], ZMQ_SNDMORE);
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assert (rc != -1);
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// Release resources.
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rc = zmq_msg_close (&peer_frame);
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assert (rc == 0);
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rc = zmq_msg_close (&data_frame);
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assert (rc == 0);
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}
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}
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assert (step == steps);
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rc = zmq_close (sockets [CLIENT]);
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assert (rc == 0);
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rc = zmq_close (sockets [SERVER]);
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assert (rc == 0);
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rc = zmq_ctx_term (context);
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assert (rc == 0);
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return 0;
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}
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