[jira] [Updated] (TS-1816) active_timeout may lead TS crash

["Leif Hedstrom (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TS-1816?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Leif Hedstrom updated TS-1816:
------------------------------

    Labels: A  (was: )
    
> active_timeout may lead TS crash
> --------------------------------
>
>                 Key: TS-1816
>                 URL: https://issues.apache.org/jira/browse/TS-1816
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: HTTP
>            Reporter: weijin
>              Labels: A
>
> 1: client request with 'If-Modified-Since'
> 2: ts has no copy in the cache and prepare for cache write
> 3: ts send server without the field 'If-Modified-Since'
> 4: server response hdr is back (200 0K)
> 5: suppose the request`s If-Modified-Since < reponse`s Last-Modified, ts will send client 304 back(HttpSM::setup_internal_transfer)
> 6: ts will do the tunnel_handler_cache_fill to write the response to cache
> the is a problem in step 5 and step 6. In step 5, all the event`s associated by server_session is also handled by HttpSM::state_read_server_response_header rather than the tunnel, which may lead to serious problems.

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