6370908: Add support for HTTP_CONNECT proxy in Socket class (original) (raw)

Christopher Hegarty - Sun Microsystems Ireland Christopher.Hegarty at Sun.COM
Mon Feb 22 07:02:11 PST 2010

Hi Damjan,

Actually, I did some work on this back in 2006 (!), but never finished it. I brought the changes into a mercurial repository and created a webrev:

http://cr.openjdk.java.net/~chegar/6370908/webrev.00/webrev/

Basically, this change provides the basic functionality, without any frills, authentication, etc. I think for tunneling sockets through a HTTP proxy it should be sufficient. Do you require authentication in your environment?

To have authentication supported we would need to restructure the HTTP protocol handler in sun.net.www.protocol.http.HttpURLConnection, so that we can take advantage of the authentication schemes it already supports. Not a big deal, just needs to be done.

-Chris.

On 21/02/2010 13:09, Damjan Jovanovic wrote:

Hi

From http://bugs.sun.com/viewbug.do?bugid=6370908 This RFE is basically about getting a TCP socket to tunnel through an HTTP proxy using the HTTP CONNECT request. I've found a hack to get this feature to work, using sun.net.* packages and lots of reflection. Would it be acceptable to use this solution (with some way to change socket identity) in a patch that adds a java.net.HttpSocketImpl class similar to the java.net.SocksSocketImpl class that's already used to tunnel through SOCKS proxies? If not, in what other way should such a patch be done? Thank you Damjan Jovanovic import java.net.*; import java.io.*; import java.lang.reflect.*; public class TunnelProxy { private static Socket connectThroughHTTPProxy(String proxyHost, int proxyPort, String destinationHost, int destinationPort) throws Exception { URL destinationURL = new URL("http://" + destinationHost + ":" + destinationPort); sun.net.www.protocol.http.HttpURLConnection conn = new sun.net.www.protocol.http.HttpURLConnection( destinationURL, new java.net.Proxy(java.net.Proxy.Type.HTTP, new InetSocketAddress(proxyHost, proxyPort))); conn.setDoInput(true); conn.setDoOutput(true); conn.connect(); conn.doTunneling(); Field httpField = conn.getClass().getDeclaredField("http"); httpField.setAccessible(true); sun.net.www.http.HttpClient httpClient = (sun.net.www.http.HttpClient) httpField.get(conn); Field serverSocketField = sun.net.NetworkClient.class.getDeclaredField("serverSocket"); serverSocketField.setAccessible(true); Socket socket = (Socket) serverSocketField.get(httpClient); return socket; } public static void main(String[] args) throws Exception { System.setProperty("java.net.useSystemProxies", "true"); InputStream in = connectThroughHTTPProxy(args[0], Integer.parseInt(args[1]), args[2], Integer.parseInt(args[3])).getInputStream(); byte[] bytes = new byte[1024]; int bytesRead; while ((bytesRead = in.read(bytes)) != -1) { System.out.print(new String(bytes)); } } }

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