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From: David Motes <davidmotes@gmail.com>
Date: Fri, 19 Aug 2016 11:01:47 -0400
Message-ID: <CAMUO6ijL0Ud8vvDu9yhfQ+iQFvj9yhdnOS5M-WAKnTzJS5Yy=Q@mail.gmail.com>
Subject: Re: Can a 201 (Created) response cause HTTP async client to
 prematurely send a FIN to the server?
To: HttpClient User Discussion <httpclient-users@hc.apache.org>
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archived-at: Fri, 19 Aug 2016 15:03:02 -0000

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 The response code should be sent back after the entire request has been
processed. You cannot send a 201 created back after the headers and then
discover something is wrong with the body and change the response code to
some kind of error, it is too late.

 Your server needs to be changed to send that response code upon completion
of the request.

On Fri, Aug 19, 2016 at 10:47 AM, Sachin Nikumbh <sanikumbh@gmail.com>
wrote:

> Hi all,
>
> I realized that in my previous post, I did not do a good job of explaining
> the problem that I am facing. My sincere apologies for that.
>
> We have a custom server that my client Java application is communicating
> with using the async client. To be specific we are using an instance of
> CloseableHttpAsyncClient from the client application. The client sends a
> POST request with few kilo bytes of data. The server reads the headers,
> sends a 201 back to the client acknowledging the receipt of request and
> continues reading with the request body. What I see using wireshark on the
> client side is that the client receives 201 when it is still in the middle
> of sending the data. But then the client sends a FIN even before it has
> sent all the data. This results in server not receiving all the data.
>
> Now, if we remove the server 201 response, everything works fine. I.e
> client sends all the data to the server. We also don't see this behavior if
> the client sends small amount of data < 3 kb.
>
> Is this a known issue? Are there any client side hooks that I can use to
> fix/debug this issue?
>
> Any help would be greatly appreciated.
>
> Thanks
> Sachin
>

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