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https://issues.apache.org/jira/browse/HTTPCLIENT-660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12508856
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Roland Weber commented on HTTPCLIENT-660:
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That sounds like a case for an optional request interceptor.
> Should host header be send in all lowercase
> -------------------------------------------
>
> Key: HTTPCLIENT-660
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-660
> Project: HttpComponents HttpClient
> Issue Type: Improvement
> Affects Versions: 3.1 RC1
> Environment: Windows XP
> Sun 1.6_01 JVM
> Reporter: Daniel Hopper
> Priority: Minor
> Fix For: 4.0 Alpha 1
>
>
> Current the host header is sent as is from any 302 or standard url request.
> Now obviously according to the spec host names should be compared case
> insensitive but this isn't always the case. Most if not all browser will
> always lowercase the domain names when a request is sent. This problem
> happened when we were trying to valid urls from merchants. The one in
> particular was
> http://www.jdoqocy.com/click-1916095-10274762
> which will finally end up redirecting to
> http://www.BestArt.com/default.asp?aff=1
> With that case in the domain name and that is the way the host header is
> written. This will actually return a 404 if you request this URL from
> commons-httpclient, but will give no problem with a request in IE or FireFox
> b/c they lowercase the domain name before sending. This is b/c its trying to
> match BestArt instead of bestart. Now I know this isn't a problem with
> commons-httpclient but rather how they have their server configured. I think
> it would be nice to provide a property for this configuration settting or
> rather follow the way all browsers handle this as well.
> I know this isn't a major issue and was able to get around it by just sub
> classing the GetMethod and overriding addRequestHeader.
> @Override
> public void addRequestHeader(Header header) {
> if(header.getName().equalsIgnoreCase("host")) {
> header = new Header(header.getName(),
> header.getValue().toLowerCase(), header.isAutogenerated());
> }
> super.addRequestHeader(header);
> }
> Just thought this may be of interest as well as it is quite a simple fix.
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