Index: source/org/jivesoftware/smackx/bytestreams/socks5/Socks5Proxy.java
===================================================================
--- source/org/jivesoftware/smackx/bytestreams/socks5/Socks5Proxy.java	(revision 6340)
+++ source/org/jivesoftware/smackx/bytestreams/socks5/Socks5Proxy.java	(working copy)
@@ -140,7 +140,21 @@
                 }
             }
             else {
-                this.serverSocket = new ServerSocket(SmackConfiguration.getLocalSocks5ProxyPort());
+            	boolean isSetUp = false;
+                int port = Math.abs(SmackConfiguration.getLocalSocks5ProxyPort());
+                for (int i = 0; i < 65535 - port; i++) {
+                    try {
+                        this.serverSocket = new ServerSocket(port + i);
+                    	isSetUp = true;
+                        break;
+                    }
+                    catch (IOException e) {
+                        // port is used, try next one
+                    }
+                }
+                if (!isSetUp){
+                	throw new IOException("Address already in use: JVM_Bind");
+                }
             }
 
             if (this.serverSocket != null) {