metro.java

static void enableMetroDumps() {
    // https://metro.java.net/guide/ch02.html#logging
    // dumps encrypted transport messages
    System.setProperty("com.sun.xml.internal.ws.transport.http.client.HttpTransportPipe.dump", "true");
    System.setProperty("com.sun.xml.ws.transport.http.client.HttpTransportPipe.dump", "true");
    // dumps unencrypted/decrypted message before/after security tube's processing
    System.setProperty("com.sun.xml.wss.provider.wsit.SecurityTubeFactory.dump", "true");
    System.setProperty("com.sun.xml.ws.transport.http.HttpAdapter.dumpTreshold", "100000");
}