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/* SPDX-License-Identifier: MPL-2.0 */
#include "testutil.hpp"
#include "testutil_unity.hpp"
#include <string.h>
SETUP_TEARDOWN_TESTCONTEXT
static const int SERVER = 0;
static const int CLIENT = 1;
struct test_message_t
{
int turn;
const char *text;
};
// NOTE: messages are sent without null terminator.
const test_message_t dialog[] = {
{CLIENT, "i can haz cheez burger?"},
{SERVER, "y u no disonnect?"},
{CLIENT, ""},
};
const int steps = sizeof (dialog) / sizeof (dialog[0]);
bool has_more (void *socket_)
{
int more = 0;
size_t more_size = sizeof (more);
int rc = zmq_getsockopt (socket_, ZMQ_RCVMORE, &more, &more_size);
if (rc != 0)
return false;
return more != 0;
}
void test_stream_disconnect ()
{
size_t len = MAX_SOCKET_STRING;
char bind_endpoint[MAX_SOCKET_STRING];
char connect_endpoint[MAX_SOCKET_STRING];
void *sockets[2];
sockets[SERVER] = test_context_socket (ZMQ_STREAM);
int enabled = 1;
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (
sockets[SERVER], ZMQ_STREAM_NOTIFY, &enabled, sizeof (enabled)));
TEST_ASSERT_SUCCESS_ERRNO (zmq_bind (sockets[SERVER], "tcp://0.0.0.0:*"));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_getsockopt (sockets[SERVER], ZMQ_LAST_ENDPOINT, bind_endpoint, &len));
// Apparently Windows can't connect to 0.0.0.0. A better fix would be welcome.
#ifdef ZMQ_HAVE_WINDOWS
snprintf (connect_endpoint, MAX_SOCKET_STRING * sizeof (char),
"tcp://127.0.0.1:%s", strrchr (bind_endpoint, ':') + 1);
#else
strcpy (connect_endpoint, bind_endpoint);
#endif
sockets[CLIENT] = test_context_socket (ZMQ_STREAM);
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (
sockets[CLIENT], ZMQ_STREAM_NOTIFY, &enabled, sizeof (enabled)));
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sockets[CLIENT], connect_endpoint));
// wait for connect notification
// Server: Grab the 1st frame (peer routing id).
zmq_msg_t peer_frame;
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_init (&peer_frame));
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_recv (&peer_frame, sockets[SERVER], 0));
TEST_ASSERT_GREATER_THAN_INT (0, zmq_msg_size (&peer_frame));
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&peer_frame));
TEST_ASSERT_TRUE (has_more (sockets[SERVER]));
// Server: Grab the 2nd frame (actual payload).
zmq_msg_t data_frame;
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_init (&data_frame));
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_recv (&data_frame, sockets[SERVER], 0));
TEST_ASSERT_EQUAL_INT (0, zmq_msg_size (&data_frame));
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&data_frame));
// Client: Grab the 1st frame (peer routing id).
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_init (&peer_frame));
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_recv (&peer_frame, sockets[CLIENT], 0));
TEST_ASSERT_GREATER_THAN_INT (0, zmq_msg_size (&peer_frame));
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&peer_frame));
TEST_ASSERT_TRUE (has_more (sockets[CLIENT]));
// Client: Grab the 2nd frame (actual payload).
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_init (&data_frame));
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_recv (&data_frame, sockets[CLIENT], 0));
TEST_ASSERT_EQUAL_INT (0, zmq_msg_size (&data_frame));
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&data_frame));
// Send initial message.
char blob_data[256];
size_t blob_size = sizeof (blob_data);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_getsockopt (sockets[CLIENT], ZMQ_ROUTING_ID, blob_data, &blob_size));
TEST_ASSERT_GREATER_THAN (0, blob_size);
zmq_msg_t msg;
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_init_size (&msg, blob_size));
memcpy (zmq_msg_data (&msg), blob_data, blob_size);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_msg_send (&msg, sockets[dialog[0].turn], ZMQ_SNDMORE));
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&msg));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_msg_init_size (&msg, strlen (dialog[0].text)));
memcpy (zmq_msg_data (&msg), dialog[0].text, strlen (dialog[0].text));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_msg_send (&msg, sockets[dialog[0].turn], ZMQ_SNDMORE));
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&msg));
// TODO: make sure this loop doesn't loop forever if something is wrong
// with the test (or the implementation).
int step = 0;
while (step < steps) {
// Wait until something happens.
zmq_pollitem_t items[] = {
{sockets[SERVER], 0, ZMQ_POLLIN, 0},
{sockets[CLIENT], 0, ZMQ_POLLIN, 0},
};
TEST_ASSERT_SUCCESS_ERRNO (zmq_poll (items, 2, 100));
// Check for data received by the server.
if (items[SERVER].revents & ZMQ_POLLIN) {
TEST_ASSERT_EQUAL_INT (CLIENT, dialog[step].turn);
// Grab the 1st frame (peer routing id).
zmq_msg_t peer_frame;
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_init (&peer_frame));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_msg_recv (&peer_frame, sockets[SERVER], 0));
TEST_ASSERT_GREATER_THAN_INT (0, zmq_msg_size (&peer_frame));
TEST_ASSERT_TRUE (has_more (sockets[SERVER]));
// Grab the 2nd frame (actual payload).
zmq_msg_t data_frame;
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_init (&data_frame));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_msg_recv (&data_frame, sockets[SERVER], 0));
// Make sure payload matches what we expect.
const char *const data =
static_cast<const char *> (zmq_msg_data (&data_frame));
const size_t size = zmq_msg_size (&data_frame);
// 0-length frame is a disconnection notification. The server
// should receive it as the last step in the dialogue.
if (size == 0) {
++step;
TEST_ASSERT_EQUAL_INT (steps, step);
} else {
TEST_ASSERT_EQUAL_INT (strlen (dialog[step].text), size);
TEST_ASSERT_EQUAL_STRING_LEN (dialog[step].text, data, size);
++step;
TEST_ASSERT_LESS_THAN_INT (steps, step);
// Prepare the response.
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&data_frame));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_msg_init_size (&data_frame, strlen (dialog[step].text)));
memcpy (zmq_msg_data (&data_frame), dialog[step].text,
zmq_msg_size (&data_frame));
// Send the response.
TEST_ASSERT_SUCCESS_ERRNO (
zmq_msg_send (&peer_frame, sockets[SERVER], ZMQ_SNDMORE));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_msg_send (&data_frame, sockets[SERVER], ZMQ_SNDMORE));
}
// Release resources.
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&peer_frame));
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&data_frame));
}
// Check for data received by the client.
if (items[CLIENT].revents & ZMQ_POLLIN) {
TEST_ASSERT_EQUAL_INT (SERVER, dialog[step].turn);
// Grab the 1st frame (peer routing id).
zmq_msg_t peer_frame;
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_init (&peer_frame));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_msg_recv (&peer_frame, sockets[CLIENT], 0));
TEST_ASSERT_GREATER_THAN_INT (0, zmq_msg_size (&peer_frame));
TEST_ASSERT_TRUE (has_more (sockets[CLIENT]));
// Grab the 2nd frame (actual payload).
zmq_msg_t data_frame;
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_init (&data_frame));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_msg_recv (&data_frame, sockets[CLIENT], 0));
TEST_ASSERT_GREATER_THAN_INT (0, zmq_msg_size (&data_frame));
// Make sure payload matches what we expect.
const char *const data =
static_cast<const char *> (zmq_msg_data (&data_frame));
const size_t size = zmq_msg_size (&data_frame);
TEST_ASSERT_EQUAL_INT (strlen (dialog[step].text), size);
TEST_ASSERT_EQUAL_STRING_LEN (dialog[step].text, data, size);
++step;
// Prepare the response (next line in the dialog).
TEST_ASSERT_LESS_THAN_INT (steps, step);
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&data_frame));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_msg_init_size (&data_frame, strlen (dialog[step].text)));
memcpy (zmq_msg_data (&data_frame), dialog[step].text,
zmq_msg_size (&data_frame));
// Send the response.
TEST_ASSERT_SUCCESS_ERRNO (
zmq_msg_send (&peer_frame, sockets[CLIENT], ZMQ_SNDMORE));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_msg_send (&data_frame, sockets[CLIENT], ZMQ_SNDMORE));
// Release resources.
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&peer_frame));
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&data_frame));
}
}
TEST_ASSERT_EQUAL_INT (steps, step);
test_context_socket_close (sockets[CLIENT]);
test_context_socket_close (sockets[SERVER]);
}
int main (int, char **)
{
setup_test_environment ();
UNITY_BEGIN ();
RUN_TEST (test_stream_disconnect);
return UNITY_END ();
}
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