From 605f53bdc1dcfbe980c37300b4c5bf0335f8a8ee Mon Sep 17 00:00:00 2001
From: Garrett D'Amore <garrett@damore.org>
Date: Fri, 27 Apr 2018 10:36:24 -0700
Subject: Add nonblocking test (test case for bug 346).

---
 tests/CMakeLists.txt |   1 +
 tests/nonblock.c     | 123 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 124 insertions(+)
 create mode 100644 tests/nonblock.c

(limited to 'tests')

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index d658dd65..6db01e82 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -139,6 +139,7 @@ add_nng_test(ipc 5 NNG_TRANSPORT_IPC)
 add_nng_test(list 5 ON)
 add_nng_test(message 5 ON)
 add_nng_test(multistress 60 ON)
+add_nng_test(nonblock 60 ON)
 add_nng_test(options 5 ON)
 add_nng_test(platform 5 ON)
 add_nng_test(pollfd 5 ON)
diff --git a/tests/nonblock.c b/tests/nonblock.c
new file mode 100644
index 00000000..1ad3c2f8
--- /dev/null
+++ b/tests/nonblock.c
@@ -0,0 +1,123 @@
+//
+// Copyright 2018 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 "nng.h"
+#include "protocol/reqrep0/rep.h"
+#include "protocol/reqrep0/req.h"
+#include "supplemental/util/platform.h"
+
+#include "convey.h"
+#include "stubs.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef _WIN32
+#include <sys/select.h>
+#include <sys/time.h>
+#endif
+
+const char *addr = "inproc://bug346";
+
+void
+repthr(void *arg)
+{
+	nng_socket   rep = *(nng_socket *) arg;
+	nng_listener l;
+	int          ifd;
+	PLATFD       fd;
+
+	nng_listen(rep, addr, &l, NNG_FLAG_NONBLOCK);
+
+	nng_getopt_int(rep, NNG_OPT_RECVFD, &ifd);
+	fd = ifd;
+
+	for (;;) {
+		fd_set         fset;
+		struct timeval tmo;
+		char *         msgbuf;
+		size_t         msglen;
+
+		FD_ZERO(&fset);
+		FD_SET(fd, &fset);
+
+		tmo.tv_sec  = 0;
+		tmo.tv_usec = 20 * 1000; // 20 msec
+
+		select(1, &fset, NULL, NULL, &tmo);
+
+		for (;;) {
+			int rv;
+			rv = nng_recv(rep, &msgbuf, &msglen,
+			    NNG_FLAG_NONBLOCK | NNG_FLAG_ALLOC);
+			if (rv != 0) {
+				return;
+			}
+			nng_free(msgbuf, msglen);
+			int ok = 0;
+			rv     = nng_send(rep, &ok, 4, NNG_FLAG_NONBLOCK);
+			if (rv == NNG_ECLOSED) {
+				return;
+			}
+		}
+	}
+}
+
+void
+reqthr(void *arg)
+{
+	nng_socket req = *(nng_socket *) arg;
+
+	nng_dial(req, addr, NULL, NNG_FLAG_NONBLOCK);
+
+	int query = 0;
+	// We just keep pounding out requests, no wait for response.
+	for (;;) {
+		int rv;
+		rv = nng_send(req, &query, sizeof(query), 0);
+		if (rv == NNG_ECLOSED) {
+			return;
+		}
+		nng_msleep(50);
+	}
+}
+
+#define NCLIENTS 10
+nng_socket reqs[NCLIENTS];
+nng_socket rep;
+
+TestMain("Nonblocking Works", {
+
+	atexit(nng_fini);
+
+	Convey("Running for 15 sec", {
+
+		nng_thread *server;
+		nng_thread *clients[NCLIENTS];
+
+		So(nng_rep0_open(&rep) == 0);
+		for (int i = 0; i < NCLIENTS; i++) {
+			So(nng_req0_open(&reqs[i]) == 0);
+		}
+
+		nng_thread_create(&server, repthr, &rep);
+		for (int i = 0; i < NCLIENTS; i++) {
+			nng_thread_create(&clients[i], reqthr, &reqs[i]);
+		}
+
+		nng_msleep(15000);
+		nng_close(rep);
+		nng_thread_destroy(server);
+		for (int i = 0; i < NCLIENTS; i++) {
+			nng_close(reqs[i]);
+			nng_thread_destroy(clients[i]);
+		}
+	});
+})
-- 
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