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From "Riad Souissi" <rsouiss...@stc.com.sa>
Subject RE: Problems using the HTTPClient through a proxy
Date Sat, 12 Feb 2005 13:32:54 GMT

You said setVersion() should work on Proxy comm; where do you apply it ?
I may have miss-used it (I have this:
However, it should be possible to specify a different HTTP version for
proxy comm from the tunnled comm (it may be the case already, but I do
not see how).

Here are the logs:

2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] DefaultHttpParams - Set
parameter http.protocol.version = HTTP/1.0
2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] DefaultHttpParams - Set
parameter http.method.retry-handler =
2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] DefaultHttpParams - Set
parameter http.protocol.cookie-policy = ignoreCookies
2005/02/12 15:07:21:234 GMT+03:00 [DEBUG]
MultiThreadedHttpConnectionManager -
HttpConnectionManager.getConnection:  config =
proxyHost=http://proxy.yyyy.com:8080], timeout = 30000
2005/02/12 15:07:21:234 GMT+03:00 [DEBUG]
MultiThreadedHttpConnectionManager - Getting free connection,
2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] HttpMethodDirector -
Preemptively sending default basic credentials
2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] HttpMethodDirector -
Authenticating with BASIC <any realm>@proxy.yyyy.com:8080
2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] HttpMethodParams - Credential
charset not configured, using HTTP element charset
2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] HttpMethodDirector -
Authenticating with BASIC <any realm>@devwebm.xxxx.com:443

2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] HttpMethodParams - Credential
charset not configured, using HTTP element charset
2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] HttpConnection - Open
connection to proxy.yyyy.com:8080

2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] header - >> "CONNECT
devwebm.xxxx.com:443 HTTP/1.1"
2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] HttpMethodBase - Adding Host
request header
2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] header - >> "User-Agent:
Jakarta Commons-HttpClient/3.0-rc1[\r][\n]"
2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] header - >> "Host:
2005/02/12 15:07:21:234 GMT+03:00 [DEBUG] header - >> "Proxy-Connection:
2005/02/12 15:07:21:266 GMT+03:00 [DEBUG] header - >> "[\r][\n]"
2005/02/12 15:07:22:000 GMT+03:00 [DEBUG] header - << "HTTP/1.0 200
Connection established[\r][\n]"
2005/02/12 15:07:22:000 GMT+03:00 [DEBUG] header - << "Proxy-agent:
2005/02/12 15:07:22:000 GMT+03:00 [DEBUG] ConnectMethod - CONNECT status
code 200
2005/02/12 15:07:22:016 GMT+03:00 [DEBUG] HttpConnection - Secure tunnel
to devwebm.xxxx.com:443
2005/02/12 15:07:22:016 GMT+03:00 [DEBUG] HttpMethodDirector - Closing
the connection.
2005/02/12 15:07:22:016 GMT+03:00 [DEBUG] HttpConnection - Releasing
connection back to connection manager.
2005/02/12 15:07:22:016 GMT+03:00 [DEBUG]
MultiThreadedHttpConnectionManager - Freeing connection,
2005/02/12 15:07:22:016 GMT+03:00 [DEBUG] IdleConnectionHandler - Adding
connection at: 1108210042016
2005/02/12 15:07:22:016 GMT+03:00 [DEBUG]
MultiThreadedHttpConnectionManager - Notifying no-one, there are no
waiting threads
java.net.SocketException: Socket closed
        at java.net.PlainSocketImpl.socketGetOption(Native Method)
java.net.PlainSocketImpl.getOption(PlainSocketImpl.java(Compiled Code))
        at java.net.Socket.getSendBufferSize(Socket.java:548)

Thanks in advance,

-----Original Message-----
From: Oleg Kalnichevski [mailto:olegk@apache.org]
Sent: Saturday, February 12, 2005 4:15 PM
To: httpclient-user@jakarta.apache.org
Subject: Re: Problems using the HTTPClient through a proxy

On Sat, 2005-02-12 at 15:35 +0300, Riad Souissi wrote:
> Hi all,
> I am using HTTPClient 3.0-rc1.
> I am connecting to an HTTPS site through a proxy.
> 1) I used HTTPLook to see the HTTP messages between the Proxy and the
> HTTPClient.
> I noticed that it always used HTTP/1.1 and I could not find how to get

> the HTTPClient to use HTTP/1.0 with the proxy instead.
> The setVersion() method, when used, only impacts the tunneled HTTP
> protocol between the HTTPClient and the target host.

setVersion() should also work for proxy communication. Please post the
wire/context log of the HTTP session. See
<http://jakarta.apache.org/commons/httpclient/3.0/logging.html> for
details. I'll take a look at the log

> => Do you know how I can force the client to use HTTP/1.0 with the
> proxy ?
> 2) I also that the HTTPClient does not specify the Content-Length in
> the HTTP header with the Proxy.
> This seems to cause the Proxy to reject the connection from the
> HTTPClient.

It should not. The Content-Length (or Transfer-Encoding) is required for
entity enclosing methods. HTTP CONNECT is not supposed to enclose an

> When I use the Internet Explorer, I can see that Content-Length is
> specified (value is 0).

Well, after all, it is IE.


> => Do you know how I can force the client to specify this header with
> the proxy ?
> Thanks in advance,
> riad

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