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//
// Copyright 2019 Staysail Systems, Inc. <info@staysail.tech>
// Copyright 2018 Capitar IT Group BV <info@capitar.com>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include <string.h>
#include <nng/nng.h>
#include <nng/protocol/reqrep0/rep.h>
#include <nng/protocol/reqrep0/req.h>
#include <acutest.h>
#include <testutil.h>
#ifndef NNI_PROTO
#define NNI_PROTO(x, y) (((x) << 4u) | (y))
#endif
void
test_req_rep_identity(void)
{
nng_socket s;
int p;
char * n;
TEST_CHECK(nng_req0_open(&s) == 0);
TEST_CHECK(nng_getopt_int(s, NNG_OPT_PROTO, &p) == 0);
TEST_CHECK(p == NNI_PROTO(3u, 0u)); // 48
TEST_CHECK(nng_getopt_int(s, NNG_OPT_PEER, &p) == 0);
TEST_CHECK(p == NNI_PROTO(3u, 1u)); // 49
TEST_CHECK(nng_getopt_string(s, NNG_OPT_PROTONAME, &n) == 0);
TEST_CHECK(strcmp(n, "req") == 0);
TEST_CHECK(nng_getopt_string(s, NNG_OPT_PEERNAME, &n) == 0);
TEST_CHECK(strcmp(n, "rep") == 0);
TEST_CHECK(nng_close(s) == 0);
TEST_CHECK(nng_rep0_open(&s) == 0);
TEST_CHECK(nng_getopt_int(s, NNG_OPT_PROTO, &p) == 0);
TEST_CHECK(p == NNI_PROTO(3u, 1u)); // 49
TEST_CHECK(nng_getopt_int(s, NNG_OPT_PEER, &p) == 0);
TEST_CHECK(p == NNI_PROTO(3u, 0u)); // 48
TEST_CHECK(nng_getopt_string(s, NNG_OPT_PROTONAME, &n) == 0);
TEST_CHECK(strcmp(n, "rep") == 0);
TEST_CHECK(nng_getopt_string(s, NNG_OPT_PEERNAME, &n) == 0);
TEST_CHECK(strcmp(n, "req") == 0);
TEST_CHECK(nng_close(s) == 0);
}
void
test_resend_option(void)
{
nng_socket req;
bool b;
size_t sz = sizeof(b);
const char *opt = NNG_OPT_REQ_RESENDTIME;
TEST_CHECK(nng_req0_open(&req) == 0);
TEST_CHECK(nng_setopt_ms(req, opt, 10) == 0);
TEST_CHECK(nng_setopt(req, opt, "", 1) == NNG_EINVAL);
TEST_CHECK(nng_getopt(req, opt, &b, &sz) == NNG_EINVAL);
TEST_CHECK(nng_setopt_bool(req, opt, true) == NNG_EBADTYPE);
TEST_CHECK(nng_getopt_bool(req, opt, &b) == NNG_EBADTYPE);
TEST_CHECK(nng_close(req) == 0);
}
void
test_req_recv_bad_state(void)
{
nng_socket req;
nng_msg * msg = NULL;
TEST_CHECK(nng_req0_open(&req) == 0);
TEST_CHECK(nng_recvmsg(req, &msg, 0) == NNG_ESTATE);
TEST_CHECK(msg == NULL);
TEST_CHECK(nng_close(req) == 0);
}
void
test_rep_send_bad_state(void)
{
nng_socket rep;
nng_msg * msg = NULL;
TEST_CHECK(nng_rep0_open(&rep) == 0);
TEST_CHECK(nng_msg_alloc(&msg, 0) == 0);
TEST_CHECK(nng_sendmsg(rep, msg, 0) == NNG_ESTATE);
nng_msg_free(msg);
TEST_CHECK(nng_close(rep) == 0);
}
#define SECOND 1000
void
test_req_rep_exchange(void)
{
nng_socket req;
nng_socket rep;
nng_msg * msg = NULL;
TEST_CHECK(nng_req0_open(&req) == 0);
TEST_CHECK(nng_rep0_open(&rep) == 0);
TEST_CHECK(nng_setopt_ms(req, NNG_OPT_RECVTIMEO, SECOND) == 0);
TEST_CHECK(nng_setopt_ms(rep, NNG_OPT_RECVTIMEO, SECOND) == 0);
TEST_CHECK(nng_setopt_ms(req, NNG_OPT_SENDTIMEO, SECOND) == 0);
TEST_CHECK(nng_setopt_ms(rep, NNG_OPT_SENDTIMEO, SECOND) == 0);
TEST_CHECK(testutil_marry(rep, req) == 0);
TEST_CHECK(nng_msg_alloc(&msg, 0) == 0);
TEST_CHECK(nng_msg_append(msg, "ping", 5) == 0);
TEST_CHECK(nng_msg_len(msg) == 5);
TEST_CHECK(strcmp(nng_msg_body(msg), "ping") == 0);
TEST_CHECK(nng_sendmsg(req, msg, 0) == 0);
msg = NULL;
TEST_CHECK(nng_recvmsg(rep, &msg, 0) == 0);
TEST_CHECK(msg != NULL);
TEST_CHECK(nng_msg_len(msg) == 5);
TEST_CHECK(strcmp(nng_msg_body(msg), "ping") == 0);
nng_msg_trim(msg, 5);
TEST_CHECK(nng_msg_append(msg, "pong", 5) == 0);
TEST_CHECK(nng_sendmsg(rep, msg, 0) == 0);
msg = NULL;
TEST_CHECK(nng_recvmsg(req, &msg, 0) == 0);
TEST_CHECK(msg != NULL);
TEST_CHECK(nng_msg_len(msg) == 5);
TEST_CHECK(strcmp(nng_msg_body(msg), "pong") == 0);
nng_msg_free(msg);
TEST_CHECK(nng_close(req) == 0);
TEST_CHECK(nng_close(rep) == 0);
}
void
test_req_cancel(void)
{
nng_msg * abc;
nng_msg * def;
nng_msg * cmd;
nng_duration retry = SECOND;
nng_socket req;
nng_socket rep;
TEST_CHECK(nng_rep_open(&rep) == 0);
TEST_CHECK(nng_req_open(&req) == 0);
TEST_CHECK(nng_setopt_ms(req, NNG_OPT_RECVTIMEO, SECOND) == 0);
TEST_CHECK(nng_setopt_ms(rep, NNG_OPT_RECVTIMEO, SECOND) == 0);
TEST_CHECK(nng_setopt_ms(req, NNG_OPT_SENDTIMEO, SECOND) == 0);
TEST_CHECK(nng_setopt_ms(rep, NNG_OPT_SENDTIMEO, SECOND) == 0);
TEST_CHECK(nng_setopt_ms(req, NNG_OPT_REQ_RESENDTIME, retry) == 0);
TEST_CHECK(nng_setopt_int(req, NNG_OPT_SENDBUF, 16) == 0);
TEST_CHECK(nng_msg_alloc(&abc, 0) == 0);
TEST_CHECK(nng_msg_append(abc, "abc", 4) == 0);
TEST_CHECK(nng_msg_alloc(&def, 0) == 0);
TEST_CHECK(nng_msg_append(def, "def", 4) == 0);
TEST_CHECK(testutil_marry(rep, req) == 0);
// Send req #1 (abc).
TEST_CHECK(nng_sendmsg(req, abc, 0) == 0);
// Sleep a bit. This is so that we ensure that our request gets
// to the far side. (If we cancel too fast, then our outgoing send
// will be canceled before it gets to the peer.)
testutil_sleep(100);
// Send the next next request ("def"). Note that
// the REP side server will have already buffered the receive
// request, and should simply be waiting for us to reply to abc.
TEST_CHECK(nng_sendmsg(req, def, 0) == 0);
// Receive the first request (should be abc) on the REP server.
TEST_CHECK(nng_recvmsg(rep, &cmd, 0) == 0);
TEST_ASSERT(cmd != NULL);
TEST_CHECK(nng_msg_len(cmd) == 4);
TEST_CHECK(strcmp(nng_msg_body(cmd), "abc") == 0);
// REP sends the reply to first command. This will be discarded
// by the REQ socket.
TEST_CHECK(nng_sendmsg(rep, cmd, 0) == 0);
// Now get the next command from the REP; should be "def".
TEST_CHECK(nng_recvmsg(rep, &cmd, 0) == 0);
TEST_ASSERT(cmd != NULL);
TEST_CHECK(nng_msg_len(cmd) == 4);
TEST_CHECK(strcmp(nng_msg_body(cmd), "def") == 0);
TEST_MSG("Received body was %s", nng_msg_body(cmd));
// And send it back to REQ.
TEST_CHECK(nng_sendmsg(rep, cmd, 0) == 0);
// Try a req command. This should give back "def"
TEST_CHECK(nng_recvmsg(req, &cmd, 0) == 0);
TEST_CHECK(nng_msg_len(cmd) == 4);
TEST_CHECK(strcmp(nng_msg_body(cmd), "def") == 0);
nng_msg_free(cmd);
TEST_CHECK(nng_close(req) == 0);
TEST_CHECK(nng_close(rep) == 0);
}
void
test_req_cancel_abort_recv(void)
{
nng_msg * abc;
nng_msg * def;
nng_msg * cmd;
nng_aio * aio;
nng_duration retry = SECOND * 10; // 10s (kind of never)
nng_socket req;
nng_socket rep;
TEST_CHECK(nng_rep_open(&rep) == 0);
TEST_CHECK(nng_req_open(&req) == 0);
TEST_CHECK(nng_aio_alloc(&aio, NULL, NULL) == 0);
TEST_CHECK(nng_setopt_ms(req, NNG_OPT_REQ_RESENDTIME, retry) == 0);
TEST_CHECK(nng_setopt_int(req, NNG_OPT_SENDBUF, 16) == 0);
TEST_CHECK(nng_setopt_ms(req, NNG_OPT_RECVTIMEO, 5 * SECOND) == 0);
TEST_CHECK(nng_setopt_ms(rep, NNG_OPT_RECVTIMEO, 5 * SECOND) == 0);
TEST_CHECK(nng_setopt_ms(req, NNG_OPT_SENDTIMEO, 5 * SECOND) == 0);
TEST_CHECK(nng_setopt_ms(rep, NNG_OPT_SENDTIMEO, 5 * SECOND) == 0);
TEST_CHECK(nng_msg_alloc(&abc, 0) == 0);
TEST_CHECK(nng_msg_append(abc, "abc", 4) == 0);
TEST_CHECK(nng_msg_alloc(&def, 0) == 0);
TEST_CHECK(nng_msg_append(def, "def", 4) == 0);
TEST_CHECK(testutil_marry(rep, req) == 0);
// Send req #1 (abc).
TEST_CHECK(nng_sendmsg(req, abc, 0) == 0);
// Wait for it to get ot the other side.
testutil_sleep(100);
nng_aio_set_timeout(aio, 5 * SECOND);
nng_recv_aio(req, aio);
// Give time for this recv to post properly.
testutil_sleep(100);
// Send the next next request ("def"). Note that
// the REP side server will have already buffered the receive
// request, and should simply be waiting for us to reply to
// abc.
TEST_CHECK(nng_sendmsg(req, def, 0) == 0);
// Our pending I/O should have been canceled.
nng_aio_wait(aio);
TEST_CHECK(nng_aio_result(aio) == NNG_ECANCELED);
// Receive the first request (should be abc) on the REP server.
TEST_CHECK(nng_recvmsg(rep, &cmd, 0) == 0);
TEST_CHECK(nng_msg_len(cmd) == 4);
TEST_CHECK(strcmp(nng_msg_body(cmd), "abc") == 0);
// REP sends the reply to first command. This will be
// discarded by the REQ socket.
TEST_CHECK(nng_sendmsg(rep, cmd, 0) == 0);
// Now get the next command from the REP; should be "def".
TEST_CHECK(nng_recvmsg(rep, &cmd, 0) == 0);
TEST_CHECK(nng_msg_len(cmd) == 4);
TEST_CHECK(strcmp(nng_msg_body(cmd), "def") == 0);
// And send it back to REQ.
TEST_CHECK(nng_sendmsg(rep, cmd, 0) == 0);
// Try a req command. This should give back "def"
TEST_CHECK(nng_recvmsg(req, &cmd, 0) == 0);
TEST_CHECK(nng_msg_len(cmd) == 4);
TEST_CHECK(strcmp(nng_msg_body(cmd), "def") == 0);
nng_msg_free(cmd);
nng_aio_free(aio);
TEST_CHECK(nng_close(req) == 0);
TEST_CHECK(nng_close(rep) == 0);
}
TEST_LIST = {
{ "req rep identity", test_req_rep_identity },
{ "resend option", test_resend_option },
{ "req recv bad state", test_req_recv_bad_state },
{ "rep send bad state", test_rep_send_bad_state },
{ "req rep exchange", test_req_rep_exchange },
{ "req cancel", test_req_cancel },
{ "req cancel abort recv", test_req_cancel_abort_recv },
{ NULL, NULL },
};
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