From: des <des@d4fa192b-c00b-0410-8231-f00ffab90ce4>
Date: Thu, 5 Oct 2006 11:57:35 +0000 (+0000)
Subject: RFC 2616 says "All 1xx (informational), 204 (no content), and 304 (not
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e6454b1b6fb1658df9587eb3f9be82c6fa880869;p=varnish

RFC 2616 says "All 1xx (informational), 204 (no content), and 304 (not
modified) responses MUST NOT include a message-body," so
Content-Length: is not needed in these cases (and Apache does indeed
not include it).  This causes PassBody() to call pass_straight() with
a NULL length argument, which waits until the connection is closed by
the server.  PassBody() should not call pass_*() at all for responses
that are known to be bodyless.

Submitted by:	Dagfinn Ilmari Mannsåker <ilmari@ping.uio.no>


git-svn-id: svn+ssh://projects.linpro.no/svn/varnish/trunk@1138 d4fa192b-c00b-0410-8231-f00ffab90ce4
---

diff --git a/varnish-cache/bin/varnishd/cache.h b/varnish-cache/bin/varnishd/cache.h
index e4ecc22b..2828a607 100644
--- a/varnish-cache/bin/varnishd/cache.h
+++ b/varnish-cache/bin/varnishd/cache.h
@@ -371,6 +371,7 @@ void http_Setup(struct http *ht, void *space, unsigned len);
 int http_GetHdr(struct http *hp, const char *hdr, char **ptr);
 int http_GetHdrField(struct http *hp, const char *hdr, const char *field, char **ptr);
 int http_GetStatus(struct http *hp);
+int http_IsBodyless(struct http *hp);
 int http_HdrIs(struct http *hp, const char *hdr, const char *val);
 int http_GetTail(struct http *hp, unsigned len, char **b, char **e);
 int http_Read(struct http *hp, int fd, void *b, unsigned len);
diff --git a/varnish-cache/bin/varnishd/cache_http.c b/varnish-cache/bin/varnishd/cache_http.c
index 678dbe29..56f22f1d 100644
--- a/varnish-cache/bin/varnishd/cache_http.c
+++ b/varnish-cache/bin/varnishd/cache_http.c
@@ -316,6 +316,21 @@ http_GetStatus(struct http *hp)
 	    NULL /* XXX */, 10));
 }
 
+/*---------------------------------------------------------------------
+ * All 1xx (informational), 204 (no content), and 304 (not modified)
+ * responses MUST NOT include a message-body.
+ */
+
+int
+http_IsBodyless(struct http *hp)
+{
+	int status;
+
+	status = http_GetStatus(hp);
+	return (status >= 100 && status < 200)
+		|| status == 204 || status == 304;
+}
+
 /*--------------------------------------------------------------------
  * Dissect the headers of the HTTP protocol message.
  * Detect conditionals (headers which start with '^[Ii][Ff]-')
diff --git a/varnish-cache/bin/varnishd/cache_pass.c b/varnish-cache/bin/varnishd/cache_pass.c
index 694e6fa2..7df39b47 100644
--- a/varnish-cache/bin/varnishd/cache_pass.c
+++ b/varnish-cache/bin/varnishd/cache_pass.c
@@ -201,6 +201,8 @@ PassBody(struct sess *sp)
 		cls = pass_straight(sp, vc->fd, vc->http, NULL);
 	else if (http_HdrIs(vc->http, H_Transfer_Encoding, "chunked"))
 		cls = pass_chunked(sp, vc->fd, vc->http);
+	else if (http_IsBodyless(vc->http))
+		cls = 0;
 	else {
 		cls = pass_straight(sp, vc->fd, vc->http, NULL);
 	}