Ma solution était d'utiliser jsch de Jcraft http://www.jcraft.com/jsch/ pour ouvrir un tunnel lorsque mon serveur d'application démarre. Je ferme le tunnel lorsque le serveur d'applications s'arrête. Je fais cela via un écouteur de contexte de servlet.
int findUnusedPort() {
final int startingPort = 1025;
final int endingPort = 1200;
for (int port = 1025; port < 1200; port++) {
ServerSocket serverSocket = null;
try {
serverSocket = new ServerSocket(port);
return port;
} catch (IOException e) {
System.out.println("Port " + port + "is currently in use, retrying port " + port + 1);
} finally {
// Clean up
if (serverSocket != null) try {
serverSocket.close();
} catch (IOException e) {
throw new RuntimeException("Unable to close socket on port" + port, e);
}
}
}
throw new RuntimeException("Unable to find open port between " + startingPort + " and " + endingPort);
}
private Session doSshTunnel(int tunnelPort) {
// SSH Tunnel
try {
final JSch jsch = new JSch();
sshSession = jsch.getSession("username", "sshhost", 22);
final Hashtable<String, String> config = new Hashtable<String, String>();
config.put("StrictHostKeyChecking", "no");
sshSession.setConfig(config);
sshSession.setPassword("password");
sshSession.connect();
int assigned_port = sshSession.setPortForwardingL(tunnelPort, remoteHost, remotePort);
return sshSession;
} catch (Exception e) {
throw new RuntimeException("Unable to open SSH tunnel", e);
}
}