Don't fill more than half the workspace with received data, we need to

have space for composing the reply as well.

Without this fix, the entire workspace could be filled with pipelined
requests and we would have no space to compose the reply.



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@571 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/cache_http.c

@@ -409,7 +409,11 @@ http_read_f(int fd, short event, void *arg)
 
 	(void)event;
 
-	l = hp->e - hp->v;
+	l = (hp->e - hp->s) / 2;
+	if (l < hp->v - hp->s)
+		l = 0;
+	else
+		l -= hp->v - hp->s;
 	if (l <= 1) {
 		VSL(SLT_HttpError, fd, "Received too much");
 		VSLR(SLT_HttpGarbage, fd, hp->s, hp->v);