[3.0] 6d9426d Document Vary parse error behavior

Martin Blix Grydeland martin at varnish-cache.org
Tue Mar 19 16:35:49 CET 2013

commit 6d9426dcf3b9693c90301231c1fb1761bef42f7e
Author: Martin Blix Grydeland <martin at varnish-software.com>
Date:   Tue Mar 19 15:37:05 2013 +0100

    Document Vary parse error behavior

diff --git a/doc/sphinx/tutorial/vary.rst b/doc/sphinx/tutorial/vary.rst
index ad7b48d..236f078 100644
--- a/doc/sphinx/tutorial/vary.rst
+++ b/doc/sphinx/tutorial/vary.rst
@@ -42,6 +42,14 @@ following VCL code will normalize the Accept-Encoding headers::
 The code sets the Accept-Encoding header from the client to either
 gzip, deflate with a preference for gzip.
+Vary parse errors
+Varnish will return a 503 internal server error page when it fails to
+parse the Vary server header, or if any of the client headers listed
+in the Vary header exceeds the limit of 65k characters. An SLT_Error
+log entry is added in these cases.
 Pitfall - Vary: User-Agent

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