[jira] Commented: (HTTPCLIENT-854) RFE: Provide mechanism to allow request transmission and response reception to be performed independently

["Sam Berlin (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12721561#action_12721561 ] 

Sam Berlin commented on HTTPCLIENT-854:
---------------------------------------

Would something as simple as:

--
Future<HttpResponse> futureResponse = executeService.submit(new Callable() {
   public HttpResponse call() throws IOException {
          return httpClient.execute(...);
   }
};
// do other work
HttpResponse response = future.get(...);
--

That plays nicely with the built-in JDK concurrency controls & the existing HttpClient API.


> RFE: Provide mechanism to allow request transmission and response reception to be performed independently
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: HTTPCLIENT-854
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-854
>             Project: HttpComponents HttpClient
>          Issue Type: Improvement
>          Components: HttpClient
>    Affects Versions: 4.0 Final
>         Environment: All
>            Reporter: Mike Cumings
>            Priority: Minor
>             Fix For: Future
>
>         Attachments: HTTPCLIENT-854_httpclient_2009-06-18_1.patch, HTTPCLIENT-854_httpcore_2009-06-18_1.patch
>
>
> The HttpClient API currently provides for the execution of a request via the HttpClient.execute(...) methods.  These methods all send the request and then block until the response has been received.  This precludes the user of the API from being able to send the request, perform some additional work, then come back and block on the request.  This style of processing is very desirable for implementation of HTTP-based protocols such as Bidirectional-streams Over Synchronous HTTP (BOSH).   This capability is also closely related to HTTPCLIENT-258, support for HTTP 1.1 pipelining.
> The current code base (4.0) currently utilizes org.apache.http.impl.client.DefaultRequestDirector.execute(...) to transmit requests.  This method contains a retry loop which blocks on and then examines the response from the remote server.  When success is detected, it cleans up and returns the response instance.  Requests are sent using an HttpResponseExecutor instance.  These classes support the ability to separately doSendRequest()  and doReceiveResponse().
> Please expose the ability to leverage this functionality outwith the retry loop but including the existing routing and authorization capabilities, where possible.

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