[jira] [Created] (HTTPCLIENT-1655) HttpClient sends RST instead of proper FIN ACK sequence when using non-persistance

["Alan Silva (JIRA)" <ji...@apache.org>]

Alan Silva created HTTPCLIENT-1655:
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             Summary: HttpClient sends RST instead of proper FIN ACK sequence when using non-persistance
                 Key: HTTPCLIENT-1655
                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1655
             Project: HttpComponents HttpClient
          Issue Type: Bug
          Components: HttpClient
    Affects Versions: 4.4.1
            Reporter: Alan Silva


I'm seeing an interesting behavior with HttpClient 4.4.1 GA (latest release as of the writing of this issue) when trying to make http requests with no keep-alive.

First, let me post my code for the case in which I try to request using keep-alive.

<Placeholder for keepalive code attachment link>

With the code above, everything works great. All my requests are done one the same connection and we get a nice graceful close with a couple FIN ACKs at the end. The capture is here:

<Placeholder for keepalive capture attachment link>

However, when I try to do the same thing without using keepalive (I set "Connection: close" in the httpclient and make sure I call close on the httpclient as well at the end of each request), I see I the client send a reset (RST) signal to the server at the end of the connection.

The code for the non keepalive test is here:

<Placeholder for no keepalive code attachment link>

And its capture is here:

<Placeholder for no keepalive capture attachment link>

I don't understand why the test with non persistent connections isn't gracefully closing the connection as it does with the persistent use case by sending a FIN,ACK to the server. It instead chooses to send a RST. Am I doing something wrong?

I tried the same test for no keep-alive with our legacy code using the now deprecated "commons-httpclient-3.1.jar" library. I see a proper connection close there.

<Placeholder for no keepalive capture attachment  for old httpclient link>



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