/**
* Adds the <tt>Attribute</tt>s to a specific <tt>Request</tt> which support the STUN short-term
* credential mechanism if the mechanism in question is utilized by this
* <tt>StunCandidateHarvest</tt> (i.e. by the associated <tt>StunCandidateHarvester</tt>).
*
* @param request the <tt>Request</tt> to which to add the <tt>Attribute</tt>s supporting the STUN
* short-term credential mechanism if the mechanism in question is utilized by this
* <tt>StunCandidateHarvest</tt>
* @return <tt>true</tt> if the STUN short-term credential mechanism is actually utilized by this
* <tt>StunCandidateHarvest</tt> for the specified <tt>request</tt>; otherwise, <tt>false</tt>
*/
protected boolean addShortTermCredentialAttributes(Request request) {
String shortTermCredentialUsername = harvester.getShortTermCredentialUsername();
if (shortTermCredentialUsername != null) {
request.putAttribute(AttributeFactory.createUsernameAttribute(shortTermCredentialUsername));
request.putAttribute(
AttributeFactory.createMessageIntegrityAttribute(shortTermCredentialUsername));
return true;
} else return false;
}
@Override
public void processRequest(StunMessageEvent evt) throws IllegalArgumentException {
if (logger.isLoggable(Level.FINER)) {
logger.setLevel(Level.FINEST);
}
Message message = evt.getMessage();
if (message.getMessageType() == Message.CONNECT_REQUEST) {
logger.finer("Received Connect request " + evt);
Character errorCode = null;
XorPeerAddressAttribute peerAddress = null;
FiveTuple fiveTuple = null;
Response response = null;
ConnectionIdAttribute connectionId = null;
if (!message.containsAttribute(Attribute.XOR_PEER_ADDRESS)) {
errorCode = ErrorCodeAttribute.BAD_REQUEST;
} else {
peerAddress = (XorPeerAddressAttribute) message.getAttribute(Attribute.XOR_PEER_ADDRESS);
peerAddress.setAddress(peerAddress.getAddress(), evt.getTransactionID().getBytes());
logger.finest("Peer Address requested : " + peerAddress.getAddress());
TransportAddress clientAddress = evt.getRemoteAddress();
TransportAddress serverAddress = evt.getLocalAddress();
Transport transport = evt.getLocalAddress().getTransport();
fiveTuple = new FiveTuple(clientAddress, serverAddress, transport);
Allocation allocation = this.turnStack.getServerAllocation(fiveTuple);
if (allocation == null) {
errorCode = ErrorCodeAttribute.ALLOCATION_MISMATCH;
} else if (!allocation.isPermitted(peerAddress.getAddress())) {
errorCode = ErrorCodeAttribute.FORBIDDEN;
} else {
// code for processing the connect request.
connectionId = AttributeFactory.createConnectionIdAttribute();
logger.finest("Created ConnectionID : " + connectionId.getConnectionIdValue());
try {
Socket socket =
new Socket(
peerAddress.getAddress().getAddress(), peerAddress.getAddress().getPort());
socket.setSoTimeout(30 * 1000);
IceTcpSocketWrapper iceSocket = new IceTcpSocketWrapper(socket);
this.turnStack.addSocket(iceSocket);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
/**
* TODO Create a new TCP connection to the peer from relay address. wait for at-least 30
* seconds. If it fails then send 447 error code.
*/
this.turnStack.addUnAcknowlededConnectionId(
connectionId.getConnectionIdValue(), peerAddress.getAddress(), allocation);
logger.finest("Creating Connect Success Response.");
response = MessageFactory.createConnectResponse(connectionId.getConnectionIdValue());
}
}
if (errorCode != null) {
response = MessageFactory.createConnectErrorResponse(errorCode);
logger.finest("error Code : " + (int) errorCode + " on ConnectRequest");
}
try {
logger.finest("Sending Connect Response");
turnStack.sendResponse(
evt.getTransactionID().getBytes(),
response,
evt.getLocalAddress(),
evt.getRemoteAddress());
} catch (Exception e) {
System.err.println("Failed to send response");
logger.log(
Level.INFO, "Failed to send " + response + " through " + evt.getLocalAddress(), e);
// try to trigger a 500 response although if this one failed,
throw new RuntimeException("Failed to send a response", e);
}
} else {
return;
}
}