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POHttpClient: how do I obtain the underlying socket from an existing connection?
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  1. POHttpClient: how do I obtain the underlying socket from an existing connection?
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    copied!<p>I am using HttpClient 4.02 to create a connection via proxy (using the CONNECT method) to tunnel a connection to a remote server. HttpClient is very convenient for this but I am new to the API and cannot see how to get at the underlying <code>Socket</code> of the tunneled connection.</p> <p>The following code taken from: <a href="http://svn.apache.org/repos/asf/httpcomponents/httpclient/tags/4.0.1/httpclient/src/examples/org/apache/http/examples/client/ClientExecuteProxy.java" rel="nofollow noreferrer">http://svn.apache.org/repos/asf/httpcomponents/httpclient/tags/4.0.1/httpclient/src/examples/org/apache/http/examples/client/ClientExecuteProxy.java</a></p> <pre><code> // make sure to use a proxy that supports CONNECT HttpHost target = new HttpHost("target.server.net", 443, "https"); HttpHost proxy = new HttpHost("some.proxy.net", 8080, "http"); // general setup SchemeRegistry supportedSchemes = new SchemeRegistry(); // Register the "http" and "https" protocol schemes, they are // required by the default operator to look up socket factories. supportedSchemes.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80)); supportedSchemes.register(new Scheme("https", SSLSocketFactory.getSocketFactory(), 443)); // prepare parameters HttpParams params = new BasicHttpParams(); HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1); ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, supportedSchemes); DefaultHttpClient httpclient = new DefaultHttpClient(ccm, params); httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy); HttpGet req = new HttpGet("/"); System.out.println("executing request to " + target + " via " + proxy); HttpResponse rsp = httpclient.execute(target, req); HttpEntity entity = rsp.getEntity(); </code></pre> <p>This sets up the connection nicely but is there a way to get at the underlying <code>Socket</code> in order for me to use a custom protocol to talk to the server at target.server.net?</p>
 

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