tests: multistress test converted to NUTS

2 files changed, 0 insertions, 853 deletions

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index a3569e6c..86a76069 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -130,7 +130,6 @@ add_nng_test1(httpclient 60 NNG_SUPP_HTTP)
 add_nng_test1(httpserver 30 NNG_SUPP_HTTP)
 add_nng_test(inproc 5)
 add_nng_test(ipcsupp 10)
-add_nng_test(multistress 60)
 add_nng_test(nonblock 60)
 add_nng_test(scalability 20 ON)
 add_nng_test(synch 5)
diff --git a/tests/multistress.c b/tests/multistress.c
deleted file mode 100644
index b9e48014..00000000
--- a/tests/multistress.c
+++ /dev/null
@@ -1,852 +0,0 @@
-//
-// Copyright 2024 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 <stdio.h>
-#include <string.h>
-#include <time.h>
-
-#include <nng/nng.h>
-#include <nng/protocol/bus0/bus.h>
-#include <nng/protocol/pair0/pair.h>
-#include <nng/protocol/pair1/pair.h>
-#include <nng/protocol/pipeline0/pull.h>
-#include <nng/protocol/pipeline0/push.h>
-#include <nng/protocol/pubsub0/pub.h>
-#include <nng/protocol/pubsub0/sub.h>
-#include <nng/protocol/reqrep0/rep.h>
-#include <nng/protocol/reqrep0/req.h>
-#include <nng/protocol/survey0/respond.h>
-#include <nng/protocol/survey0/survey.h>
-
-#include "convey.h"
-#include "stubs.h"
-
-#ifdef NDEBUG
-#define dprintf(...)
-#else
-#define dprintf printf
-#endif
-
-static int next_port = 20000; // port number kind of.
-
-const char *tcp4_template   = "tcp://127.0.0.1:%d";
-const char *tcp6_template   = "tcp://[::1]:%d";
-const char *inproc_template = "inproc://nng_multistress_%d";
-const char *ipc_template    = "ipc:///tmp/nng_multistress_%d";
-nng_time    end_time;
-
-const char *templates[] = {
-	"tcp://127.0.0.1:%d",
-// It would be nice to test TCPv6, but CI doesn't support it.
-// Outside of CI, it does seem to work though.
-#ifdef NNG_TEST_TCPV6
-	"tcp://[::1]:%d",
-#endif
-	"inproc://nng_multistress_%d",
-	"ipc:///tmp/nng_multistress_%d",
-};
-
-#define NTEMPLATES (sizeof(templates) / sizeof(templates[0]))
-
-char **addresses;
-int    naddresses;
-int    allocaddrs;
-
-typedef struct test_case {
-	nng_socket  sock;
-	const char *name;
-	int         nrecv;
-	int         nsend;
-	int         nfail;
-	nng_aio    *recd;
-	nng_aio    *sent;
-	nng_aio    *woke;
-	char        addr[NNG_MAXADDRLEN];
-	char        buf[32];
-
-} test_case;
-
-static test_case *cases;
-int               ncases;
-int               curcase;
-
-void
-fatal(const char *msg, int rv)
-{
-	fprintf(stderr, "%s: %s\n", msg, nng_strerror(rv));
-	abort();
-}
-
-void
-error(test_case *c, const char *msg, int rv)
-{
-	if ((rv == NNG_ECLOSED) || (rv == NNG_ECANCELED)) {
-		return;
-	}
-	fprintf(
-	    stderr, "%s: %s: %s (%d)\n", c->name, msg, nng_strerror(rv), rv);
-	c->nfail++;
-}
-
-// Get a random address -- TCP, IP, whatever.
-char *
-getaddr(char *buf)
-{
-	int i;
-	i = rand() % NTEMPLATES;
-
-	snprintf(buf, NNG_MAXADDRLEN, templates[i], next_port++);
-	return (buf);
-}
-
-// Request/Reply test.  For this test, we open a server socket,
-// and bind it to each protocol.  Then we run a bunch of clients
-// against it.
-
-// REP server implemented via callbacks.
-static void
-rep0_recd(void *arg)
-{
-	test_case *c = arg;
-	int        rv;
-
-	if ((rv = nng_aio_result(c->recd)) != 0) {
-		error(c, "recv", rv);
-		return;
-	}
-	c->nrecv++;
-	nng_aio_set_msg(c->sent, nng_aio_get_msg(c->recd));
-	nng_aio_set_msg(c->recd, NULL);
-	nng_send_aio(c->sock, c->sent);
-}
-
-static void
-rep0_sent(void *arg)
-{
-	test_case *c = arg;
-	int        rv;
-
-	if ((rv = nng_aio_result(c->sent)) != 0) {
-		error(c, "send", rv);
-		nng_msg_free(nng_aio_get_msg(c->sent));
-		nng_aio_set_msg(c->sent, NULL);
-		return;
-	}
-	c->nsend++;
-	nng_recv_aio(c->sock, c->recd);
-}
-
-static void
-req0_woke(void *arg)
-{
-	test_case *c   = arg;
-	nng_msg   *msg = NULL;
-	int        rv;
-
-	if ((rv = nng_aio_result(c->woke)) != 0) {
-		error(c, "sleep", rv);
-		return;
-	}
-	(void) snprintf(c->buf, sizeof(c->buf), "%u-%d", c->sock.id, c->nsend);
-	if (((rv = nng_msg_alloc(&msg, 0)) != 0) ||
-	    ((rv = nng_msg_append(msg, c->buf, strlen(c->buf) + 1)) != 0)) {
-		error(c, "alloc", rv);
-		nng_msg_free(msg);
-		return;
-	}
-	nng_aio_set_msg(c->sent, msg);
-	nng_send_aio(c->sock, c->sent);
-}
-
-static void
-req0_recd(void *arg)
-{
-	test_case *c   = arg;
-	nng_msg   *msg = NULL;
-	int        rv;
-
-	if ((rv = nng_aio_result(c->recd)) != 0) {
-		error(c, "recv", rv);
-		return;
-	}
-
-	msg = nng_aio_get_msg(c->recd);
-	if ((nng_msg_len(msg) != (strlen(c->buf) + 1)) ||
-	    (strcmp(c->buf, nng_msg_body(msg)) != 0)) {
-		error(c, "msg mismatch", rv);
-		nng_msg_free(msg);
-		return;
-	}
-
-	nng_msg_free(msg);
-	memset(c->buf, 0, sizeof(c->buf));
-
-	c->nrecv++;
-	nng_sleep_aio(rand() % 10, c->woke);
-}
-
-static void
-req0_sent(void *arg)
-{
-	test_case *c = arg;
-	int        rv;
-
-	if ((rv = nng_aio_result(c->sent)) != 0) {
-		error(c, "send", rv);
-		nng_msg_free(nng_aio_get_msg(c->sent));
-		nng_aio_set_msg(c->sent, NULL);
-		return;
-	}
-	c->nsend++;
-	nng_recv_aio(c->sock, c->recd);
-}
-
-void
-reqrep0_test(int ntests)
-{
-	test_case *srv, *cli;
-	int        i;
-	char       addr[NNG_MAXADDRLEN];
-	int        rv;
-
-	if (ntests < 2) {
-		// Need a client *and* a server.
-		return;
-	}
-
-	srv       = &cases[curcase++];
-	srv->name = "rep0";
-
-	if ((rv = nng_rep0_open(&srv->sock)) != 0) {
-		fatal("nng_rep0_open", rv);
-	}
-
-	if (((rv = nng_aio_alloc(&srv->sent, rep0_sent, srv)) != 0) ||
-	    ((rv = nng_aio_alloc(&srv->recd, rep0_recd, srv)) != 0)) {
-		fatal("nng_aio_alloc", rv);
-	}
-
-	nng_recv_aio(srv->sock, srv->recd);
-
-	for (i = 1; i < ntests; i++) {
-		cli       = &cases[curcase++];
-		cli->name = "req0";
-
-		if (((rv = nng_aio_alloc(&cli->sent, req0_sent, cli)) != 0) ||
-		    ((rv = nng_aio_alloc(&cli->recd, req0_recd, cli)) != 0) ||
-		    ((rv = nng_aio_alloc(&cli->woke, req0_woke, cli)) != 0)) {
-			fatal("nng_aio_alloc", rv);
-		}
-
-		if ((rv = nng_req0_open(&cli->sock)) != 0) {
-			fatal("nng_req0_open", rv);
-		}
-
-		getaddr(addr);
-		dprintf("DOING reqrep0 (req %u rep %u) address: %s\n",
-		    cli->sock.id, srv->sock.id, addr);
-
-		if ((rv = nng_listen(srv->sock, addr, NULL, 0)) != 0) {
-			fatal("nng_listen", rv);
-		}
-		if ((rv = nng_dial(cli->sock, addr, NULL, 0)) != 0) {
-			fatal("nng_dial", rv);
-		}
-
-		nng_sleep_aio(1, cli->woke);
-	}
-}
-
-// PAIRv0 test.  We just bind two sockets together, and bounce messages at
-// each other.  As we don't need to run synchronously, the receive is not
-// linked to the send.
-
-static void
-pair0_recd(void *arg)
-{
-	test_case *c = arg;
-	int        rv;
-	if ((rv = nng_aio_result(c->recd)) != 0) {
-		error(c, "recv", rv);
-		return;
-	}
-	c->nrecv++;
-	nng_msg_free(nng_aio_get_msg(c->recd));
-	nng_recv_aio(c->sock, c->recd);
-}
-
-static void
-pair0_woke(void *arg)
-{
-	test_case *c   = arg;
-	nng_msg   *msg = NULL;
-	int        rv;
-
-	if ((rv = nng_aio_result(c->woke)) != 0) {
-		error(c, "sleep", rv);
-		return;
-	}
-	if (((rv = nng_msg_alloc(&msg, 0)) != 0) ||
-	    ((rv = nng_msg_append_u32(msg, (unsigned) rand())) != 0)) {
-		error(c, "alloc", rv);
-		nng_msg_free(msg);
-		return;
-	}
-	nng_aio_set_msg(c->sent, msg);
-	nng_send_aio(c->sock, c->sent);
-}
-
-static void
-pair0_sent(void *arg)
-{
-	test_case *c = arg;
-	int        rv;
-	if ((rv = nng_aio_result(c->sent)) != 0) {
-		error(c, "send", rv);
-		nng_msg_free(nng_aio_get_msg(c->sent));
-		nng_aio_set_msg(c->sent, NULL);
-		return;
-	}
-	c->nsend++;
-	nng_sleep_aio(rand() % 10, c->woke);
-}
-
-void
-pair0_test(int ntests)
-{
-	test_case *srv, *cli;
-	char       addr[NNG_MAXADDRLEN];
-	int        rv;
-
-	if (ntests < 2) {
-		return;
-	}
-	srv       = &cases[curcase++];
-	srv->name = "pair0";
-	cli       = &cases[curcase++];
-	cli->name = "pair0";
-
-	if (((rv = nng_pair0_open(&srv->sock)) != 0) ||
-	    ((rv = nng_pair0_open(&cli->sock)) != 0)) {
-		fatal("nng_pair0_open", rv);
-	}
-
-	if (((rv = nng_aio_alloc(&srv->sent, pair0_sent, srv)) != 0) ||
-	    ((rv = nng_aio_alloc(&srv->recd, pair0_recd, srv)) != 0) ||
-	    ((rv = nng_aio_alloc(&srv->woke, pair0_woke, srv)) != 0) ||
-	    ((rv = nng_aio_alloc(&cli->sent, pair0_sent, cli)) != 0) ||
-	    ((rv = nng_aio_alloc(&cli->recd, pair0_recd, cli)) != 0) ||
-	    ((rv = nng_aio_alloc(&cli->woke, pair0_woke, cli)) != 0)) {
-		fatal("nng_aio_alloc", rv);
-	}
-
-	getaddr(addr);
-	dprintf("DOING pair0 (%u, %u) address: %s\n", cli->sock.id,
-	    srv->sock.id, addr);
-
-	if ((rv = nng_listen(srv->sock, addr, NULL, 0)) != 0) {
-		fatal("nng_listen", rv);
-	}
-	if ((rv = nng_dial(cli->sock, addr, NULL, 0)) != 0) {
-		fatal("nng_dial", rv);
-	}
-
-	nng_recv_aio(srv->sock, srv->recd);
-	nng_recv_aio(cli->sock, cli->recd);
-	nng_sleep_aio(1, srv->woke);
-	nng_sleep_aio(1, cli->woke);
-}
-
-// BUSv0 test.  We just bind sockets together into a full mesh, and bounce
-// messages at each other.  As we don't need to run synchronously, the
-// receive is not linked to the send.
-
-static void
-bus0_recd(void *arg)
-{
-	test_case *c = arg;
-	int        rv;
-	if ((rv = nng_aio_result(c->recd)) != 0) {
-		error(c, "recv", rv);
-		return;
-	}
-	c->nrecv++;
-	nng_msg_free(nng_aio_get_msg(c->recd));
-	nng_recv_aio(c->sock, c->recd);
-}
-
-static void
-bus0_woke(void *arg)
-{
-	test_case *c   = arg;
-	nng_msg   *msg = NULL;
-	int        rv;
-
-	if ((rv = nng_aio_result(c->woke)) != 0) {
-		error(c, "sleep", rv);
-		return;
-	}
-	if (((rv = nng_msg_alloc(&msg, 0)) != 0) ||
-	    ((rv = nng_msg_append_u32(msg, (unsigned) rand())) != 0)) {
-		nng_msg_free(msg);
-		error(c, "alloc", rv);
-		return;
-	}
-	nng_aio_set_msg(c->sent, msg);
-	nng_send_aio(c->sock, c->sent);
-}
-
-static void
-bus0_sent(void *arg)
-{
-	test_case *c = arg;
-	int        rv;
-	if ((rv = nng_aio_result(c->sent)) != 0) {
-		nng_msg_free(nng_aio_get_msg(c->sent));
-		nng_aio_set_msg(c->sent, NULL);
-		error(c, "send", rv);
-		return;
-	}
-	c->nsend++;
-	nng_sleep_aio(rand() % 10, c->woke);
-}
-
-void
-bus0_test(int ntests)
-{
-
-	if (ntests < 2) {
-		return;
-	}
-	for (int i = 0; i < ntests; i++) {
-		test_case *c = &cases[curcase + i];
-		int        rv;
-
-		getaddr(c->addr);
-
-		c->name = "bus0";
-		if (((rv = nng_aio_alloc(&c->recd, bus0_recd, c)) != 0) ||
-		    ((rv = nng_aio_alloc(&c->sent, bus0_sent, c)) != 0) ||
-		    ((rv = nng_aio_alloc(&c->woke, bus0_woke, c)) != 0)) {
-			fatal("nng_aio_alloc", rv);
-		}
-		if ((rv = nng_bus0_open(&c->sock)) != 0) {
-			fatal("nng_bus0_open", rv);
-		}
-		if ((rv = nng_listen(c->sock, c->addr, NULL, 0)) != 0) {
-			fatal("nng_listen", rv);
-		}
-		dprintf("DOING bus0 (%u) address: %s\n", c->sock.id, c->addr);
-
-		// We dial to everyone else who already listened.
-		for (int j = 0; j < i; j++) {
-			rv = nng_dial(
-			    c->sock, cases[curcase + j].addr, NULL, 0);
-			if (rv != 0) {
-				fatal("nng_dial", rv);
-			}
-		}
-	}
-
-	for (int i = 0; i < ntests; i++) {
-		test_case *c = &cases[curcase++];
-		nng_recv_aio(c->sock, c->recd);
-		nng_sleep_aio(1, c->woke);
-	}
-}
-
-void
-pub0_woke(void *arg)
-{
-	test_case *c   = arg;
-	nng_msg   *msg = NULL;
-	int        rv;
-
-	if ((rv = nng_aio_result(c->woke)) != 0) {
-		error(c, "sleep", rv);
-		return;
-	}
-	if (((rv = nng_msg_alloc(&msg, 0)) != 0) ||
-	    ((rv = nng_msg_append(msg, "SUB", 4)) != 0)) {
-		nng_msg_free(msg);
-		error(c, "alloc", rv);
-		return;
-	}
-	nng_aio_set_msg(c->sent, msg);
-	nng_send_aio(c->sock, c->sent);
-}
-
-void
-pub0_sent(void *arg)
-{
-	test_case *c = arg;
-	int        rv;
-	if ((rv = nng_aio_result(c->sent)) != 0) {
-		nng_msg_free(nng_aio_get_msg(c->sent));
-		nng_aio_set_msg(c->sent, NULL);
-		error(c, "send", rv);
-		return;
-	}
-	c->nsend++;
-	nng_sleep_aio(rand() % 10, c->woke);
-}
-
-void
-sub0_recd(void *arg)
-{
-	test_case *c = arg;
-	int        rv;
-
-	if ((rv = nng_aio_result(c->recd)) != 0) {
-		error(c, "recv", rv);
-		return;
-	}
-	c->nrecv++;
-	nng_msg_free(nng_aio_get_msg(c->recd));
-	nng_aio_set_msg(c->recd, NULL);
-	nng_recv_aio(c->sock, c->recd);
-}
-
-void
-pub0_sender(void *arg)
-{
-	test_case *c = arg;
-	for (;;) {
-		nng_msg *msg;
-		int      rv;
-
-		nng_msleep(rand() % 10);
-		if (nng_clock() > end_time) {
-			break;
-		}
-
-		if ((rv = nng_msg_alloc(&msg, 0)) != 0) {
-			error(c, "alloc", rv);
-			return;
-		}
-
-		if ((rv = nng_msg_append(msg, "SUB", 4)) != 0) {
-			nng_msg_free(msg);
-			error(c, "msg_append", rv);
-			return;
-		}
-
-		if ((rv = nng_sendmsg(c->sock, msg, 0)) != 0) {
-			nng_msg_free(msg);
-			error(c, "sendmsg", rv);
-			return;
-		}
-		c->nsend++;
-	}
-}
-
-void
-pubsub0_test(int ntests)
-{
-	test_case *srv;
-	int        rv;
-
-	if (ntests < 2) {
-		// Need a client *and* a server.
-		return;
-	}
-
-	srv       = &cases[curcase++];
-	srv->name = "pub0";
-
-	if ((rv = nng_pub0_open(&srv->sock)) != 0) {
-		fatal("nng_pub0_open", rv);
-	}
-	if (((rv = nng_aio_alloc(&srv->sent, pub0_sent, srv)) != 0) ||
-	    ((rv = nng_aio_alloc(&srv->woke, pub0_woke, srv)) != 0)) {
-		fatal("nng_aio_alloc", rv);
-	}
-
-	for (int i = 1; i < ntests; i++) {
-		test_case *cli = &cases[curcase++];
-
-		cli->name = "sub0";
-		getaddr(cli->addr);
-
-		if ((rv = nng_sub0_open(&cli->sock)) != 0) {
-			fatal("nng_sub0_open", rv);
-		}
-		if ((rv = nng_aio_alloc(&cli->recd, sub0_recd, cli)) != 0) {
-			fatal("nng_aio_alloc", rv);
-		}
-		rv = nng_sub0_socket_subscribe(cli->sock, "", 0);
-		if (rv != 0) {
-			fatal("subscribe", rv);
-		}
-
-		dprintf("DOING pubsub0 (pub %u sub %u) address: %s\n",
-		    cli->sock.id, srv->sock.id, cli->addr);
-
-		if ((rv = nng_listen(srv->sock, cli->addr, NULL, 0)) != 0) {
-			fatal("nng_listen", rv);
-		}
-		if ((rv = nng_dial(cli->sock, cli->addr, NULL, 0)) != 0) {
-			fatal("nng_dial", rv);
-		}
-
-		nng_recv_aio(cli->sock, cli->recd);
-	}
-
-	nng_sleep_aio(1, srv->woke);
-}
-
-void
-push0_sent(void *arg)
-{
-	test_case *c = arg;
-	int        rv;
-
-	if ((rv = nng_aio_result(c->sent)) != 0) {
-		nng_msg_free(nng_aio_get_msg(c->sent));
-		nng_aio_set_msg(c->sent, NULL);
-		error(c, "send", rv);
-		return;
-	}
-
-	c->nsend++;
-	nng_sleep_aio(rand() % 10, c->woke);
-}
-
-void
-push0_woke(void *arg)
-{
-	test_case *c   = arg;
-	nng_msg   *msg = NULL;
-	int        rv;
-
-	if ((rv = nng_aio_result(c->woke)) != 0) {
-		error(c, "sleep", rv);
-		return;
-	}
-	if (((rv = nng_msg_alloc(&msg, 0)) != 0) ||
-	    ((rv = nng_msg_append_u32(msg, (unsigned) rand())) != 0)) {
-		nng_msg_free(msg);
-		error(c, "alloc", rv);
-		return;
-	}
-	nng_aio_set_msg(c->sent, msg);
-	nng_send_aio(c->sock, c->sent);
-}
-
-void
-pull0_recd(void *arg)
-{
-	test_case *c = arg;
-	int        rv;
-
-	if ((rv = nng_aio_result(c->recd)) != 0) {
-		error(c, "recv", rv);
-		return;
-	}
-	c->nrecv++;
-	nng_msg_free(nng_aio_get_msg(c->recd));
-	nng_aio_set_msg(c->recd, NULL);
-	nng_recv_aio(c->sock, c->recd);
-}
-
-void
-pipeline0_pusher(void *arg)
-{
-	test_case *c = arg;
-	for (;;) {
-		nng_msg *msg;
-		int      rv;
-
-		nng_msleep(rand() % 10);
-		if (nng_clock() > end_time) {
-			break;
-		}
-
-		if ((rv = nng_msg_alloc(&msg, 0)) != 0) {
-			error(c, "alloc", rv);
-			return;
-		}
-
-		if ((rv = nng_msg_append(msg, "PUSH", 5)) != 0) {
-			nng_msg_free(msg);
-			error(c, "msg_append", rv);
-			return;
-		}
-
-		if ((rv = nng_sendmsg(c->sock, msg, 0)) != 0) {
-			nng_msg_free(msg);
-			error(c, "sendmsg", rv);
-			return;
-		}
-		c->nsend++;
-	}
-}
-
-void
-pipeline0_puller(void *arg)
-{
-	test_case *c = arg;
-	int        rv;
-
-	for (;;) {
-		nng_msg *msg;
-		if (nng_clock() > end_time) {
-			break;
-		}
-
-		if ((rv = nng_recvmsg(c->sock, &msg, 0)) != 0) {
-			error(c, "recvmsg", rv);
-			return;
-		}
-		c->nrecv++;
-		nng_msg_free(msg);
-	}
-}
-
-void
-pipeline0_test(int ntests)
-{
-	test_case *srv;
-	int        rv;
-
-	if (ntests < 2) {
-		// Need a client *and* a server.
-		return;
-	}
-
-	srv       = &cases[curcase++];
-	srv->name = "push0";
-
-	if ((rv = nng_push0_open(&srv->sock)) != 0) {
-		fatal("nng_push0_open", rv);
-	}
-	if (((rv = nng_aio_alloc(&srv->sent, push0_sent, srv)) != 0) ||
-	    ((rv = nng_aio_alloc(&srv->woke, push0_woke, srv)) != 0)) {
-		fatal("nng_aio_alloc", rv);
-	}
-
-	for (int i = 1; i < ntests; i++) {
-		test_case *cli = &cases[curcase++];
-
-		cli->name = "pull0";
-		getaddr(cli->addr);
-
-		if ((rv = nng_pull0_open(&cli->sock)) != 0) {
-			fatal("nng_sub0_open", rv);
-		}
-		if ((rv = nng_aio_alloc(&cli->recd, pull0_recd, cli)) != 0) {
-			fatal("nng_aio_alloc", rv);
-		}
-
-		dprintf("DOING pipeline0 (pull %u push %u) address: %s\n",
-		    cli->sock.id, srv->sock.id, cli->addr);
-
-		if ((rv = nng_listen(srv->sock, cli->addr, NULL, 0)) != 0) {
-			fatal("nng_listen", rv);
-		}
-		if ((rv = nng_dial(cli->sock, cli->addr, NULL, 0)) != 0) {
-			fatal("nng_dial", rv);
-		}
-
-		nng_recv_aio(cli->sock, cli->recd);
-	}
-
-	nng_sleep_aio(1, srv->woke);
-}
-
-Main({
-	int   i;
-	char *str;
-	int   tmo;
-
-	// Each run should truly be random.
-	srand((int) time(NULL));
-
-	if (((str = ConveyGetEnv("STRESSTIME")) == NULL) ||
-	    ((tmo = atoi(str)) < 1)) {
-		tmo = 30;
-	}
-	// We have to keep this relatively low by default because some
-	// platforms have limited resources.
-	if (((str = ConveyGetEnv("STRESSPRESSURE")) == NULL) ||
-	    ((ncases = atoi(str)) < 1)) {
-		ncases = 32;
-	}
-
-	// Reduce the likelihood of address in use conflicts between
-	// subsequent runs.
-	next_port += (rand() % 100) * 100;
-
-	i = ncases;
-
-	cases    = calloc(ncases, sizeof(test_case));
-	end_time = nng_clock() + (tmo * 1000);
-	while (i > 1) {
-		int x = rand() % NTEMPLATES;
-		if (x > i) {
-			x = i;
-		}
-		switch (rand() % 5) {
-		case 0:
-			reqrep0_test(x);
-			break;
-		case 1:
-			pair0_test(x);
-			break;
-		case 2:
-			pubsub0_test(x);
-			break;
-		case 3:
-			bus0_test(x);
-			break;
-		case 4:
-			pipeline0_test(x);
-			break;
-		default:
-			// that didn't work
-			break;
-		}
-		i = ncases - curcase;
-	}
-
-	dprintf("WAITING for %d sec...\n", tmo);
-	nng_msleep(tmo * 1000); // sleep 30 sec
-	for (i = 0; i < ncases; i++) {
-		nng_aio_stop(cases[i].woke);
-	}
-
-	Test("MultiProtocol/Transport Stress", {
-		Convey("All tests worked", {
-			for (i = 0; i < ncases; i++) {
-				test_case *c = &cases[i];
-				if (c->name == NULL) {
-					break;
-				}
-				nng_aio_stop(c->sent);
-				nng_aio_stop(c->recd);
-				nng_aio_stop(c->woke);
-				nng_aio_free(c->sent);
-				nng_aio_free(c->recd);
-				nng_aio_free(c->woke);
-
-				dprintf("RESULT socket %u (%s) sent %d "
-				        "recd %d fail %d\n",
-				    c->sock.id, c->name, c->nsend, c->nrecv,
-				    c->nfail);
-				So(c->nfail == 0);
-				So((c->sent == NULL) || (c->nsend > 0));
-				So((c->recd == NULL) || (c->nrecv > 0));
-			}
-		});
-	});
-
-	free(cases);
-	nng_fini();
-})