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copied!<p>I've been able to log all SSL traffic implementing my own <a href="http://java.sun.com/javase/6/docs/api/javax/net/ssl/SSLSocketFactory.html" rel="nofollow noreferrer">SSLSocketFactory</a> on top of the default one. </p> <p>This worked for me because all of our connections are using HTTPS and we can set the socket factory with the method <a href="http://java.sun.com/javase/6/docs/api/javax/net/ssl/HttpsURLConnection.html#setSSLSocketFactory(javax.net.ssl.SSLSocketFactory)" rel="nofollow noreferrer">HttpsURLConnection.setSSLSocketFactory</a>. </p> <p>A more complete solution that enables monitoring on all sockets can be found at <a href="http://www.javaspecialists.eu/archive/Issue169.html" rel="nofollow noreferrer">http://www.javaspecialists.eu/archive/Issue169.html</a> Thanks to <a href="https://stackoverflow.com/users/8946">Lawrence Dol</a> for pointing in the right direction of using <a href="http://java.sun.com/javase/6/docs/api/java/net/Socket.html#setSocketImplFactory(java.net.SocketImplFactory)" rel="nofollow noreferrer">Socket.setSocketImplFactory</a></p> <p>Here is my not ready for production code:</p> <pre><code>public class WireLogSSLSocketFactory extends SSLSocketFactory { private SSLSocketFactory delegate; public WireLogSSLSocketFactory(SSLSocketFactory sf0) { this.delegate = sf0; } public Socket createSocket(Socket s, String host, int port, boolean autoClose) throws IOException { return new WireLogSocket((SSLSocket) delegate.createSocket(s, host, port, autoClose)); } /* ... */ private static class WireLogSocket extends SSLSocket { private SSLSocket delegate; public WireLogSocket(SSLSocket s) { this.delegate = s; } public OutputStream getOutputStream() throws IOException { return new LoggingOutputStream(delegate.getOutputStream()); } /* ... */ private static class LoggingOutputStream extends FilterOutputStream { private static final Logger logger = Logger.getLogger(WireLogSocket.LoggingOutputStream.class); //I'm using a fixed charset because my app always uses the same. private static final String CHARSET = "ISO-8859-1"; private StringBuffer sb = new StringBuffer(); public LoggingOutputStream(OutputStream out) { super(out); } public void write(byte[] b, int off, int len) throws IOException { sb.append(new String(b, off, len, CHARSET)); logger.info("\n" + sb.toString()); out.write(b, off, len); } public void write(int b) throws IOException { sb.append(b); logger.info("\n" + sb.toString()); out.write(b); } public void close() throws IOException { logger.info("\n" + sb.toString()); super.close(); } } } } </code></pre>

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