Split this test into tcp and uds

The former fails in some platforms but we can test the latter.

bin/varnishtest/tests/s00010.vtc

-varnishtest "client h1 send timeouts"
+varnishtest "client h1 send timeouts - tcp"
 
 # XXX See https://github.com/varnishcache/varnish-cache/pull/2980#issuecomment-486214661
-feature cmd {test $(uname) != "SunOS"}
+feature cmd {test $(uname) != "SunOS" && test $(uname) != "Darwin"}
+
+feature SO_RCVTIMEO_WORKS
 
 server s1 {
 	rxreq
@@ -13,7 +15,6 @@ varnish v1 				\
 	-arg "-p idle_send_timeout=.1"	\
 	-arg "-p send_timeout=.1"	\
 	-arg "-a 127.0.0.1:0"		\
-	-arg "-a ${tmpdir}/v1.sock"	\
 	-vcl+backend {
 	import debug;
 
@@ -24,7 +25,6 @@ varnish v1 				\
 
 logexpect l1 -v v1 {
 	expect * * Debug "Hit total send timeout"
-	expect * * Debug "Hit total send timeout"
 } -start
 
 client c1 -rcvbuf 128 {
@@ -35,25 +35,14 @@ client c1 -rcvbuf 128 {
 	delay 2
 } -start
 
-client c1u -connect "${tmpdir}/v1.sock" -rcvbuf 128 {
-	txreq
-	non_fatal
-	rxresphdrs
-	# keep the session open for 2 seconds
-	delay 2
-} -start
-
 client c1 -wait
-client c1u -wait
 logexpect l1 -wait
 
-feature SO_RCVTIMEO_WORKS
 varnish v1 -cliok "param.set idle_send_timeout 1"
 varnish v1 -cliok "param.reset send_timeout"
 
 logexpect l2 -v v1 {
 	expect * * Debug "Hit idle send timeout"
-	expect * * Debug "Hit idle send timeout"
 } -start
 
 client c2 -rcvbuf 128 {
@@ -63,13 +52,5 @@ client c2 -rcvbuf 128 {
 	delay 2
 } -start
 
-client c2u -connect "${tmpdir}/v1.sock" -rcvbuf 128 {
-	txreq
-	rxresphdrs
-	# keep the session open for 2 seconds
-	delay 2
-} -start
-
 client c2 -wait
-client c2u -wait
 logexpect l2 -wait

bin/varnishtest/tests/s00012.vtc

+varnishtest "client h1 send timeouts - uds"
+
+feature SO_RCVTIMEO_WORKS
+
+server s1 {
+	rxreq
+	txresp -bodylen 100000
+} -start
+
+varnish v1 				\
+	-arg "-p timeout_idle=1"	\
+	-arg "-p idle_send_timeout=.1"	\
+	-arg "-p send_timeout=.1"	\
+	-arg "-a ${tmpdir}/v1.sock"	\
+	-vcl+backend {
+	import debug;
+
+	sub vcl_deliver {
+		debug.sndbuf(128b);
+	}
+} -start
+
+logexpect l1 -v v1 {
+	expect * * Debug "Hit total send timeout"
+} -start
+
+client c1 -connect "${tmpdir}/v1.sock" -rcvbuf 128 {
+	txreq
+	non_fatal
+	rxresphdrs
+	# keep the session open for 2 seconds
+	delay 2
+} -start
+
+client c1 -wait
+logexpect l1 -wait
+
+varnish v1 -cliok "param.set idle_send_timeout 1"
+varnish v1 -cliok "param.reset send_timeout"
+
+logexpect l2 -v v1 {
+	expect * * Debug "Hit idle send timeout"
+} -start
+
+client c2 -connect "${tmpdir}/v1.sock" -rcvbuf 128 {
+	txreq
+	rxresphdrs
+	# keep the session open for 2 seconds
+	delay 2
+} -start
+
+client c2 -wait
+logexpect l2 -wait