snf created TS-1496:
-----------------------
Summary: Traffic Server with null-transform buffering large
responses when client connection slow
Key: TS-1496
URL: https://issues.apache.org/jira/browse/TS-1496
Project: Traffic Server
Issue Type: Bug
Components: HTTP
Affects Versions: 3.2.0
Environment: Red Hat 6.3
Reporter: snf
Scenario: Traffic Server started with the null-transform plugin. The link
between the client and Traffic Server is slower than the link between the
Traffic Server and the Origin Server.
Affect: If the client requests a large file from the Origin Server, the whole
file can be transmitted to, and buffered by, Traffic Server before content is
released to the client. This is a bigger issue if a large number of clients
request large files then the Traffic Server could end up buffering very large
amounts of content.
Expected behaviour: The Traffic Server should not download all the content
from the Origin Server. Instead, if the client is slow receiving from Traffic
Server, then Traffic Server should be slow receiving from the Origin Server.
Traffic Server should facilitate end to end flow control between client and
Origin Server.
Tools to replicate problem: Use Traffic Control to set a lower bandwidth on
the client machine.
Possible related area in the Traffic Server code: The following comment
appears in proxy/http/Httptunnel.cc
48 static void
49 chunked_reenable(HttpTunnelProducer * p, HttpTunnel * tunnel)
50 {
51
52 // FIX ME: still need to deal with huge chunk sizes. If a chunk
53 // is 1GB, we will currently buffer the whole thing
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
