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Posted to bugs@httpd.apache.org by bu...@apache.org on 2005/05/11 22:36:29 UTC
DO NOT REPLY [Bug 34876] New: -
mod_proxy buffers across chunk boundaries when returning data to the client using chunked encoding
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http://issues.apache.org/bugzilla/show_bug.cgi?id=34876
Summary: mod_proxy buffers across chunk boundaries when returning
data to the client using chunked encoding
Product: Apache httpd-1.3
Version: HEAD
Platform: Other
OS/Version: All
Status: NEW
Keywords: PatchAvailable
Severity: normal
Priority: P2
Component: mod_proxy
AssignedTo: bugs@httpd.apache.org
ReportedBy: jdperlow@alumni.princeton.edu
When using mod_proxy as a reverse proxy, I hit the case where it would buffer
accross chunk boundaries for chunks that are returned to the client. The data
will no be sent until the buffer limit is reached. This breaks certain classes
of web applications that return intermediate results over http over an extended
period of time.
The fix is to apply the following diff to proxy_util.c. This forces each chunk
to be flushed to the socket when the end of the chunk is reached.
--- proxy_util.c.prev 2005-05-11 13:29:13.000000000 -0700
+++ proxy_util.c 2005-05-11 13:30:25.000000000 -0700
@@ -605,6 +605,10 @@
w = ap_bwrite(con->client, &buf[o], n);
+ if (chunked) {
+ ap_bflush(con->client);
+ }
+
if (alternate_timeouts)
ap_kill_timeout(r);
else
--
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