[HTTPCORE-14] Consider decoupling HttpHost and Scheme and moving Scheme, SocketFactory and SecureSocketFactory to HttpConn

Changelog:
----------
* Moved Scheme, SocketFactory, SecureSocketFactory and related classes to HttpConn 


git-svn-id: https://svn.apache.org/repos/asf/jakarta/httpcomponents/httpclient/trunk@451408 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/http/conn/SecureSocketFactory.java

@@ -0,0 +1,70 @@
+/*
+ * $HeadURL$
+ * $Revision$
+ * $Date$
+ *
+ * ====================================================================
+ *
+ *  Copyright 2002-2004 The Apache Software Foundation
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+
+package org.apache.http.io;
+
+import java.io.IOException;
+import java.net.Socket;
+import java.net.UnknownHostException;
+
+/**
+ * A {@link SocketFactory SocketFactory} for secure sockets (SSL/TLS).
+ * See there for things to consider when implementing a socket factory.
+ * 
+ * @author Michael Becke
+ * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
+ * @since 2.0
+ */
+public interface SecureSocketFactory extends SocketFactory {
+
+    /**
+     * Returns a socket connected to the given host that is layered over an
+     * existing socket.  Used primarily for creating secure sockets through
+     * proxies.
+     * 
+     * @param socket the existing socket 
+     * @param host the host name/IP
+     * @param port the port on the host
+     * @param autoClose a flag for closing the underling socket when the created
+     * socket is closed
+     * 
+     * @return Socket a new socket
+     * 
+     * @throws IOException if an I/O error occurs while creating the socket
+     * @throws UnknownHostException if the IP address of the host cannot be
+     * determined
+     */
+    Socket createSocket(
+        Socket socket, 
+        String host, 
+        int port, 
+        boolean autoClose
+    ) throws IOException, UnknownHostException;              
+
+}