libzmq/tests/testutil.hpp

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/*
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Copyright (c) 2007-2013 Contributors as noted in the AUTHORS file
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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
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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.
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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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#ifndef __TESTUTIL_HPP_INCLUDED__
#define __TESTUTIL_HPP_INCLUDED__
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#include "../include/zmq.h"
#include <string.h>
#undef NDEBUG
#include <assert.h>
#include <stdarg.h>
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#if defined _WIN32
#include <crtdbg.h>
#pragma warning(disable:4996)
#endif
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// Bounce a message from client to server and back
// For REQ/REP or DEALER/DEALER pairs only
void
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bounce (void *server, void *client)
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{
const char *content = "12345678ABCDEFGH12345678abcdefgh";
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// Send message from client to server
int rc = zmq_send (client, content, 32, ZMQ_SNDMORE);
assert (rc == 32);
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rc = zmq_send (client, content, 32, 0);
assert (rc == 32);
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// Receive message at server side
char buffer [32];
rc = zmq_recv (server, buffer, 32, 0);
assert (rc == 32);
int rcvmore;
size_t sz = sizeof (rcvmore);
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rc = zmq_getsockopt (server, ZMQ_RCVMORE, &rcvmore, &sz);
assert (rc == 0);
assert (rcvmore);
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rc = zmq_recv (server, buffer, 32, 0);
assert (rc == 32);
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rc = zmq_getsockopt (server, ZMQ_RCVMORE, &rcvmore, &sz);
assert (rc == 0);
assert (!rcvmore);
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// Send two parts back to client
rc = zmq_send (server, buffer, 32, ZMQ_SNDMORE);
assert (rc == 32);
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rc = zmq_send (server, buffer, 32, 0);
assert (rc == 32);
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// Receive the two parts at the client side
rc = zmq_recv (client, buffer, 32, 0);
assert (rc == 32);
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rc = zmq_getsockopt (client, ZMQ_RCVMORE, &rcvmore, &sz);
assert (rc == 0);
assert (rcvmore);
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rc = zmq_recv (client, buffer, 32, 0);
assert (rc == 32);
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rc = zmq_getsockopt (client, ZMQ_RCVMORE, &rcvmore, &sz);
assert (rc == 0);
assert (!rcvmore);
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// Check that message is still the same
assert (memcmp (buffer, content, 32) == 0);
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}
// Same as bounce, but expect messages to never arrive
// for security or subscriber reasons.
void
expect_bounce_fail (void *server, void *client)
{
const char *content = "12345678ABCDEFGH12345678abcdefgh";
char buffer [32];
// Send message from client to server
int rc = zmq_send (client, content, 32, ZMQ_SNDMORE);
assert (rc == 32);
rc = zmq_send (client, content, 32, 0);
assert (rc == 32);
// Receive message at server side (should not succeed)
int timeout = 150;
rc = zmq_setsockopt (server, ZMQ_RCVTIMEO, &timeout, sizeof (int));
assert (rc == 0);
rc = zmq_recv (server, buffer, 32, 0);
assert (rc == -1);
assert (zmq_errno () == EAGAIN);
// Send message from server to client to test other direction
rc = zmq_send (server, content, 32, ZMQ_SNDMORE);
assert (rc == 32);
rc = zmq_send (server, content, 32, 0);
assert (rc == 32);
// Receive message at client side (should not succeed)
rc = zmq_setsockopt (client, ZMQ_RCVTIMEO, &timeout, sizeof (int));
assert (rc == 0);
rc = zmq_recv (client, buffer, 32, 0);
assert (rc == -1);
assert (zmq_errno () == EAGAIN);
}
// Receive 0MQ string from socket and convert into C string
// Caller must free returned string. Returns NULL if the context
// is being terminated.
char *
s_recv (void *socket) {
char buffer [256];
int size = zmq_recv (socket, buffer, 255, 0);
if (size == -1)
return NULL;
if (size > 255)
size = 255;
buffer [size] = 0;
return strdup (buffer);
}
// Convert C string to 0MQ string and send to socket
int
s_send (void *socket, const char *string) {
int size = zmq_send (socket, string, strlen (string), 0);
return size;
}
// Sends string as 0MQ string, as multipart non-terminal
int
s_sendmore (void *socket, const char *string) {
int size = zmq_send (socket, string, strlen (string), ZMQ_SNDMORE);
return size;
}
#define streq(s1,s2) (!strcmp ((s1), (s2)))
#define strneq(s1,s2) (strcmp ((s1), (s2)))
const char *SEQ_END = (const char *) 1;
// Sends a message composed of frames that are C strings or null frames.
// The list must be terminated by SEQ_END.
// Example: s_send_seq (req, "ABC", 0, "DEF", SEQ_END);
void s_send_seq (void *socket, ...)
{
va_list ap;
va_start (ap, socket);
const char * data = va_arg (ap, const char *);
while (true)
{
const char * prev = data;
data = va_arg (ap, const char *);
bool end = data == SEQ_END;
if (!prev) {
int rc = zmq_send (socket, 0, 0, end ? 0 : ZMQ_SNDMORE);
assert (rc != -1);
}
else {
int rc = zmq_send (socket, prev, strlen (prev)+1, end ? 0 : ZMQ_SNDMORE);
assert (rc != -1);
}
if (end)
break;
}
va_end (ap);
}
// Receives message a number of frames long and checks that the frames have
// the given data which can be either C strings or 0 for a null frame.
// The list must be terminated by SEQ_END.
// Example: s_recv_seq (rep, "ABC", 0, "DEF", SEQ_END);
void s_recv_seq (void *socket, ...)
{
zmq_msg_t msg;
zmq_msg_init (&msg);
int more;
size_t more_size = sizeof(more);
va_list ap;
va_start (ap, socket);
const char * data = va_arg (ap, const char *);
while (true) {
int rc = zmq_msg_recv (&msg, socket, 0);
assert (rc != -1);
if (!data)
assert (zmq_msg_size (&msg) == 0);
else
assert (strcmp (data, (const char *)zmq_msg_data (&msg)) == 0);
data = va_arg (ap, const char *);
bool end = data == SEQ_END;
rc = zmq_getsockopt (socket, ZMQ_RCVMORE, &more, &more_size);
assert (rc == 0);
assert (!more == end);
if (end)
break;
}
va_end (ap);
zmq_msg_close (&msg);
}
// Sets a zero linger period on a socket and closes it.
void close_zero_linger (void *socket)
{
int linger = 0;
int rc = zmq_setsockopt (socket, ZMQ_LINGER, &linger, sizeof(linger));
assert (rc == 0 || errno == ETERM);
rc = zmq_close (socket);
assert (rc == 0);
}
void setup_test_environment()
{
#if defined _WIN32
_set_abort_behavior( 0, _WRITE_ABORT_MSG);
_CrtSetReportMode( _CRT_ASSERT, _CRTDBG_MODE_FILE );
_CrtSetReportFile( _CRT_ASSERT, _CRTDBG_FILE_STDERR );
#endif
}
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#endif