[jira] [Created] (TS-4627) ts_lua plugin - support TSRemapOSResponse() related functionality

["Kit Chan (JIRA)" <ji...@apache.org>]

Kit Chan created TS-4627:
----------------------------

             Summary: 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


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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