[libsoup] Mirror Mozilla behavior for when to follow Content-Length

[Benjamin Otte <otte src gnome org>]

commit 2835654f19000ee9b8b689a617936e299b6d6213
Author: Benjamin Otte <otte gnome org>
Date:   Tue Aug 4 12:11:03 2009 +0200

    Mirror Mozilla behavior for when to follow Content-Length
    
    Mozilla only honors content length on messages that use keep-alive to
    work around servers that send broken Content-Length headers. This patch
    mirrors that behavior.
    
    An example for such a page is
    http://sourceforge.net/apps/wordpress/sourceforge

 libsoup/soup-message-client-io.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/libsoup/soup-message-client-io.c b/libsoup/soup-message-client-io.c
index 8159922..654b320 100644
--- a/libsoup/soup-message-client-io.c
+++ b/libsoup/soup-message-client-io.c
@@ -56,6 +56,18 @@ parse_response_headers (SoupMessage *req,
 	if (*encoding == SOUP_ENCODING_UNRECOGNIZED)
 		return SOUP_STATUS_MALFORMED;
 
+        /* mirror Mozilla here:
+         * (see netwerk/protocol/http/src/nsHttpTransaction.cpp for details)
+         *
+         * HTTP servers have been known to send erroneous Content-Length headers.
+         * So, unless the connection is persistent, we must make allowances for a
+         * possibly invalid Content-Length header. Thus, if NOT persistent, we 
+         * simply accept the whole message.
+         */
+        if (*encoding == SOUP_ENCODING_CONTENT_LENGTH &&
+            !soup_message_is_keepalive (req))
+                *encoding = SOUP_ENCODING_EOF;
+
 	return SOUP_STATUS_OK;
 }