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From "Oleg Kalnichevski (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HTTPCLIENT-1085) Connection is never reused if response is gzip with non-negative Content-Length
Date Fri, 13 May 2011 08:15:47 GMT

     [ https://issues.apache.org/jira/browse/HTTPCLIENT-1085?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Oleg Kalnichevski updated HTTPCLIENT-1085:

         Priority: Major  (was: Minor)
    Fix Version/s: 4.2 Alpha1
       Issue Type: Bug  (was: Improvement)

This is a bug and a fairly severe one. What is worse, I currently do not see an easy fix for
it. The resolution of this issue will have to wait until 4.2


> Connection is never reused if response is gzip with non-negative Content-Length
> -------------------------------------------------------------------------------
>                 Key: HTTPCLIENT-1085
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1085
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: HttpClient
>    Affects Versions: 4.1.1
>            Reporter: Daniel Rabe
>             Fix For: 4.2 Alpha1
> While debugging a separate issue, I noticed that DefaultConnectionReuseStrategy is very
sensitive to whether the server returns a positive content-length or content-length=-1 with
chunked encoding. In particular, I saw two cases:
> (1) Server returns gzip response with Content-Length=-1, chunked encoding. The connection
is reused.
> (2) Server returns gzip response with Content-Length=<actual-number-of-bytes-in-response>
The connection is NOT reused.
> This is because of the following code in DefaultConnectionReuseStrategy:
>            if (entity.getContentLength() < 0) {
>                 if (!entity.isChunked() ||
>                     ver.lessEquals(HttpVersion.HTTP_1_0)) {
>                     // if the content length is not known and is not chunk
>                     // encoded, the connection cannot be reused
>                     return false;
>                 }
>             }
> GzipDecompressingEntity implements its getContentLength as always returning -1. However,
it is not chunked. Therefore, the connection is not reused.
> I'm not sure if you would consider this a bug or a request for enhancement, but it seems
to me that if the server is returning an accurate content-length, the client should be able
to consume that number of bytes, then reuse the connection.

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