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https://issues.apache.org/jira/browse/TS-4720?focusedWorklogId=26215&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-26215
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ASF GitHub Bot logged work on TS-4720:
--------------------------------------

                Author: ASF GitHub Bot
            Created on: 05/Aug/16 21:51
            Start Date: 05/Aug/16 21:51
    Worklog Time Spent: 10m 
      Work Description: Github user jacksontj closed the pull request at:

    https://github.com/apache/trafficserver/pull/841


Issue Time Tracking
-------------------

    Worklog Id:     (was: 26215)
    Time Spent: 1h  (was: 50m)

> ATS not properly closing origin connections in client abort situations
> ----------------------------------------------------------------------
>
>                 Key: TS-4720
>                 URL: https://issues.apache.org/jira/browse/TS-4720
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: HTTP
>            Reporter: Thomas Jackson
>            Assignee: Thomas Jackson
>             Fix For: 7.0.0
>
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> We've noticed that there are some scenarios that ATS doesn't close the origin 
> connection when the client aborts. To reproduce I set up an http server which 
> would return a text/stream sending a message every 10s. In this case, if I do 
> a GET request to the endpoint and then immediately kill the client, the 
> connection to the origin doesn't close until the transaction active timer 
> kicks in. 
> After digging into this, it seems that this is actually due to a bug in the 
> HttpSM-- specifically in how it checks whether a request has a body. The 
> default value for content-length is `-1`, but some checks are `== 0` -- which 
> means that if the request had no content-length header it is treated as a 
> request with a content-length. 
> The particular place that was problematic was the section that enables the 
> vio reader to watch for client aborts-- which specifically isn't enabled for 
> POST/chunked requests as it is enabled later down the call chain (since it 
> needs to handle the buffers itself).



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