merged branch improve_bytestreams in trunk

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@11821 b35dd754-fafc-0310-a699-88a17e54d16e

source/org/jivesoftware/smackx/bytestreams/socks5/Socks5BytestreamSession.java

@@ -0,0 +1,81 @@
+package org.jivesoftware.smackx.bytestreams.socks5;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.Socket;
+import java.net.SocketException;
+
+import org.jivesoftware.smackx.bytestreams.BytestreamSession;
+
+/**
+ * Socks5BytestreamSession class represents a SOCKS5 Bytestream session.
+ * 
+ * @author Henning Staib
+ */
+public class Socks5BytestreamSession implements BytestreamSession {
+
+    /* the underlying socket of the SOCKS5 Bytestream */
+    private final Socket socket;
+
+    /* flag to indicate if this session is a direct or mediated connection */
+    private final boolean isDirect;
+
+    protected Socks5BytestreamSession(Socket socket, boolean isDirect) {
+        this.socket = socket;
+        this.isDirect = isDirect;
+    }
+
+    /**
+     * Returns <code>true</code> if the session is established through a direct connection between
+     * the initiator and target, <code>false</code> if the session is mediated over a SOCKS proxy.
+     * 
+     * @return <code>true</code> if session is a direct connection, <code>false</code> if session is
+     *         mediated over a SOCKS5 proxy
+     */
+    public boolean isDirect() {
+        return this.isDirect;
+    }
+
+    /**
+     * Returns <code>true</code> if the session is mediated over a SOCKS proxy, <code>false</code>
+     * if this session is established through a direct connection between the initiator and target.
+     * 
+     * @return <code>true</code> if session is mediated over a SOCKS5 proxy, <code>false</code> if
+     *         session is a direct connection
+     */
+    public boolean isMediated() {
+        return !this.isDirect;
+    }
+
+    public InputStream getInputStream() throws IOException {
+        return this.socket.getInputStream();
+    }
+
+    public OutputStream getOutputStream() throws IOException {
+        return this.socket.getOutputStream();
+    }
+
+    public int getReadTimeout() throws IOException {
+        try {
+            return this.socket.getSoTimeout();
+        }
+        catch (SocketException e) {
+            throw new IOException("Error on underlying Socket");
+        }
+    }
+
+    public void setReadTimeout(int timeout) throws IOException {
+        try {
+            this.socket.setSoTimeout(timeout);
+        }
+        catch (SocketException e) {
+            throw new IOException("Error on underlying Socket");
+        }
+    }
+
+    public void close() throws IOException {
+        this.socket.close();
+    }
+
+}