Use `timeout_idle` as a timeout for request body

H2 streams waiting for request body data will timeout after timeout_idle
seconds if no new data on the stream is being received. This will ensure
that individual H2 streams can be reaped if there is no data received from
the peer.

bin/varnishd/http2/cache_http2_proto.c

@@ -31,6 +31,7 @@
 
 #include "cache/cache_varnishd.h"
 
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 
@@ -955,6 +956,7 @@ h2_vfp_body(struct vfp_ctx *vc, struct vfp_entry *vfe, void *ptr, ssize_t *lp)
 	uint64_t l, l2, tail;
 	uint8_t *dst;
 	char buf[4];
+	int i;
 
 	CHECK_OBJ_NOTNULL(vc, VFP_CTX_MAGIC);
 	CHECK_OBJ_NOTNULL(vfe, VFP_ENTRY_MAGIC);
@@ -989,8 +991,12 @@ h2_vfp_body(struct vfp_ctx *vc, struct vfp_entry *vfe, void *ptr, ssize_t *lp)
 		if (retval != VFP_OK || l > 0)
 			break;
 
-		/* XXX: Timeout */
-		AZ(Lck_CondWait(r2->cond, &h2->sess->mtx, 0));
+		i = Lck_CondWait(r2->cond, &h2->sess->mtx,
+		    VTIM_real() + SESS_TMO(h2->sess, timeout_idle));
+		if (i == ETIMEDOUT) {
+			retval = VFP_ERROR;
+			break;
+		}
 	}
 	r2->cond = NULL;