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From Oleg Kalnichevski <ol...@apache.org>
Subject Re: Unknown/invalid Content-Encoding response header
Date Mon, 06 Feb 2017 15:28:48 GMT
On Mon, 2017-02-06 at 12:10 +0100, Oliver Stöneberg wrote:
> A few days ago I wrote some test for some code I am using HttpClient 
> in. The current code is using 4.5.2. After I finsihed the tests I 
> backported those to anolder version of the compomonent I am using
> the 
> library in which still uses 4.3.x. The tests worked fine with the 
> latest version, but with the older one I got the following exception:
> 
> Caused by: org.apache.http.HttpException: Unsupported Content-Coding: 
> UTF-8
> 	at
> org.apache.http.client.protocol.ResponseContentEncoding.process(Respo
> nseContentEncoding.java:98)
> 	at
> org.apache.http.protocol.ImmutableHttpProcessor.process(ImmutableHttp
> Processor.java:139)
> 	at
> org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java
> :200)
> 	at
> org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86)
> 	at
> org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java
> :108)
> 	at
> org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttp
> Client.java:184)
> 	... 37 more
> 
> It turns out some part of the code was using "Content-Encoding" to 
> specify the charset of the response content. It feels a bit strange 
> to me that a newer version would not report such a serious error. I 
> looked at the code in question and I can see that 
> ResponseContentEncoding.java change quite a bit and now has an 
> "ignoreUnknown" flag for these cases - unfortunately that appears to 
> be hard-coded to "true" now and cannot be configured.
> 
> I browsed the release notes for some insight on this and it appears 
> to be that the fix for 
> 
> * [HTTPCLIENT-1550] Fixed 'deflate' zlib header check.
>   Contributed by Oleg Kalnichevski <olegk at apache.org>
> 
> caused this change in behavior. Seems to me like the fix went a bit 
> too far on this.
> 

See HTTPCLIENT-1643 for details

https://issues.apache.org/jira/browse/HTTPCLIENT-1643

Oleg

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