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From Oleg Kalnichevski <ol...@apache.org>
Subject Re: How to use httpclient4.0 to connect HTTPS via socks proxy?
Date Mon, 05 Jul 2010 19:26:24 GMT
On Mon, 2010-07-05 at 08:56 -0700, Jacky-Zhu-1 wrote:
> 
> 
> olegk wrote:
> > 
> > On Sun, 2010-07-04 at 11:39 -0700, Jacky-Zhu-1 wrote:
> >> I've been trying to use httpclient4.0 to connect https server via socks
> >> proxy, but it failed again and again.
> >> 
> > 
> > SOCKS is a TCP/IP level, not HTTP level protocol. SOCKS proxy support
> > can be configured using standard JVM settings.
> > 
> > Oleg
> > 
> > 
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
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> > 
> > 
> > 
> 
> Hi Oleg, thanks for your reply.
> You are right, SOCKS proxy support could be configured using standard JVM
> settings. But JVM settings is global, it will take effect for all the java
> socket, this is not what we want, we just want to use SOCKS proxy for part
> of the java sockets, so we want to go through the SOCKS by using HttpClient.
> Yes, SOCKS is TCP/IP level, HttpClient focus on HTTP level. But HttpClient
> supports to create customized socket by implementing the
> SocketFactory/LayeredSocketFactory, am I right?
> And JVM supports layered SSLSocket, I've checked the JVM code and the JSSE
> code, JVM could support to let user pass one connected socket to one
> SSLSocket.
> 
> So the solution I have tried is something like this:
> 1. create one normal socket, and connect it to the proxy server
> 2. complete the socks protocol using this socket
> 3. passed this socket to a new created SSLSocket
> 4. let HttpClient use this new SSLSocket to communicate with HTTPS server
> 
> I've checked the running status, the steps 1/2/3 are all ok, but the step 4
> failed, as the log I have pasted.
> 
> Could you give me some advices?
> Or maybe I can read the HttpClient source code to get some clues.
> 

Have a look at this example. Please note it requires HttpClient 4.1
(still ALPHA) 

http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/httpclient/src/examples/org/apache/http/examples/client/ClientExecuteSOCKS.java

Oleg



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