[master] ba54dc9 add failure handling to vcl_pipe{}

[Poul-Henning Kamp]

commit ba54dc919076b1ddb85434d886ce82a6553d926b
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Mon Feb 6 11:55:04 2017 +0000

    add failure handling to vcl_pipe{}

diff --git a/bin/varnishd/cache/cache_req_fsm.c b/bin/varnishd/cache/cache_req_fsm.c
index 30fecde..e50d132 100644
--- a/bin/varnishd/cache/cache_req_fsm.c
+++ b/bin/varnishd/cache/cache_req_fsm.c
@@ -601,6 +601,10 @@ cnt_pipe(struct worker *wrk, struct req *req)
 	VCL_pipe_method(req->vcl, wrk, req, bo, NULL);
 
 	switch (wrk->handling) {
+	case VCL_RET_FAIL:
+		req->req_step = R_STP_VCLFAIL;
+		nxt = REQ_FSM_MORE;
+		break;
 	case VCL_RET_SYNTH:
 		req->req_step = R_STP_SYNTH;
 		nxt = REQ_FSM_MORE;
diff --git a/bin/varnishtest/tests/v00051.vtc b/bin/varnishtest/tests/v00051.vtc
index 334d919..3a04517 100644
--- a/bin/varnishtest/tests/v00051.vtc
+++ b/bin/varnishtest/tests/v00051.vtc
@@ -8,6 +8,9 @@ server s1 {
 varnish v1 -vcl+backend {
 	import debug;
 	sub vcl_recv {
+		if (req.http.foo == "pipe") {
+			return(pipe);
+		}
 		if (req.http.foo == "bar") {
 			return(synth(748));
 		}
@@ -22,6 +25,12 @@ varnish v1 -vcl+backend {
 			set req.http.not = "Should not happen";
 		}
 	}
+	sub vcl_pipe {
+		if (req.http.foo == "pipe") {
+			debug.fail();
+			set req.http.not = "Should not happen";
+		}
+	}
 	sub vcl_synth {
 		if (resp.status == 748) {
 			debug.fail();
@@ -114,3 +123,25 @@ varnish v1 -expect sc_vcl_failure == 4
 
 logexpect l1 -wait
 
+#######################################################################
+# Fail in vcl_pipe, no handling in vcl_synth
+
+logexpect l1 -v v1 -g raw {
+	expect * 1012	VCL_call	"PIPE"
+	expect 0 1012	Debug		"Forced failure"
+	expect 0 1012	VCL_return	"fail"
+} -start
+
+client c1 {
+	txreq -hdr "foo: pipe"
+	rxresp
+	expect resp.status == 503
+	expect resp.reason == "VCL failed"
+} -run
+
+delay 1
+
+varnish v1 -expect sc_vcl_failure == 5
+
+logexpect l1 -wait
+
diff --git a/lib/libvcc/generate.py b/lib/libvcc/generate.py
index ef77858..14e50a1 100755
--- a/lib/libvcc/generate.py
+++ b/lib/libvcc/generate.py
@@ -94,7 +94,7 @@ returns = (
 	),
 	('pipe',
 		"C",
-		('synth', 'pipe',)
+		('fail', 'synth', 'pipe',)
 	),
 	('pass',
 		"C",