fixes nanomsg#1526 NNG_USE_CLOCKID Bug?

This makes CLOCK_MONOTONIC the default (as it should have been)
for platforms that have it defined, except for Apple platforms which lack
support for using anything other than the real time clock with condition
variables.  (And unfortunately silently ignore attempts to do otherwise.)

src/platform/posix/posix_config.h

@@ -1,5 +1,5 @@
 //
-// Copyright 2019 Staysail Systems, Inc. <[email protected]>
+// Copyright 2021 Staysail Systems, Inc. <[email protected]>
 //
 // This software is supplied under the terms of the MIT License, a
 // copy of which should be located in the distribution where this
@@ -20,11 +20,14 @@
 //	the system lacks clock_gettime, then it will choose this automatically.
 //	This value may be ignored on platforms that don't use POSIX clocks.
 //
-// #define NNG_USE_CLOCKID
+// #define NNG_USE_CLOCKID CLOCK_MONOTONIC
 //	This macro may be defined to a different clock id (see
-//	clock_gettime()).  By default we use CLOCK_MONOTONIC if it exists,
-//	or CLOCK_REALTIME otherwise.  This is ignored if NNG_USE_GETTIMEOFDAY
-//	is defined.  Platforms that don't use POSIX clocks will probably
+//	clock_gettime()).  By default, we use CLOCK_MONOTONIC if it exists,
+//	or CLOCK_REALTIME otherwise.  (Except for macOS, which does not have
+//	a functional pthread_condattr_setclock().)
+//
+//	This is ignored if NNG_USE_GETTIMEOFDAY is defined.
+//	Platforms that don't use POSIX clocks will probably
 //	ignore any setting here.
 //
 // #define NNG_HAVE_BACKTRACE
@@ -61,21 +64,18 @@
 #endif
 #endif
 
+#ifndef NNG_USE_CLOCKID
+#if defined(__APPLE__)
 #define NNG_USE_CLOCKID CLOCK_REALTIME
-#ifndef CLOCK_REALTIME
-#define NNG_USE_GETTIMEOFDAY
-#elif !defined(NNG_USE_CLOCKID)
+#elif defined(CLOCK_MONOTONIC)
 #define NNG_USE_CLOCKID CLOCK_MONOTONIC
-#else
+#elif defined(CLOCK_REALTIME)
 #define NNG_USE_CLOCKID CLOCK_REALTIME
-#endif // CLOCK_REALTIME
-
-#if defined(NNG_HAVE_KQUEUE)
-// pass
 #else
-// fallback to poll(2)
-#define NNG_USE_POSIX_POLLQ_POLL 1
+#define NNG_USE_GETTIMEOFDAY
+#endif
 #endif
+
 #define NNG_USE_POSIX_RESOLV_GAI 1
 
 #endif // NNG_PLATFORM_POSIX

src/testing/marry.c

@@ -281,6 +281,10 @@ nuts_marry_ex(
 		replace_port_zero(url, addr, port);
 		url = addr;
 	}
+	if (((rv = nng_setopt_ms(s2, NNG_OPT_RECONNMINT, 10)) != 0) ||
+	    ((rv = nng_setopt_ms(s2, NNG_OPT_RECONNMAXT, 10)) != 0)) {
+		goto done;
+	}
 	if ((rv = nng_dial(s2, url, NULL, 0)) != 0) {
 		goto done;
 	}