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https://issues.apache.org/jira/browse/TS-4627?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on TS-4627 started by Kit Chan.
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> ts_lua plugin - support TSRemapOSResponse() related functionality
> -----------------------------------------------------------------
>
> Key: TS-4627
> URL: https://issues.apache.org/jira/browse/TS-4627
> Project: Traffic Server
> Issue Type: Improvement
> Components: Lua, Plugins
> Reporter: Kit Chan
> Assignee: Kit Chan
> Fix For: 7.0.0
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> I want to add enhancement to ts_lua so I can write script to take advantage
> of the TSRemapOSResponse() related functionality.
> here is one such example
> {code}
> function do_os_response()
> ts.debug('do_os_response')
> ts.http.enable_redirect(0)
> local st = ts.http.get_server_state()
> if st == TS_LUA_SRVSTATE_CONNECTION_ALIVE then
> ts.debug('alive')
> ts.http.enable_redirect(0)
> else
> ts.debug('not alive')
> ts.http.redirect_url_set('http://www.cnn.com')
> ts.hook(TS_LUA_HOOK_SEND_RESPONSE_HDR, send_response)
> end
> end
> function send_response()
> ts.debug('send_response')
> end
> {code}
> Basically it would allow me to do something when origin server fails to
> connect (such as DNS error, timeout, etc)
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