/**
* Create a UPnP candidate.
*
* @param socket local socket
* @param externalIP external IP address
* @param port local port
* @param component parent component
* @param device the UPnP gateway device
* @return a new <tt>UPNPCandidate</tt> instance which represents the specified
* <tt>TransportAddress</tt>
* @throws Exception if something goes wrong during candidate creation
*/
private List<LocalCandidate> createUPNPCandidate(
IceSocketWrapper socket,
String externalIP,
int port,
Component component,
GatewayDevice device)
throws Exception {
List<LocalCandidate> ret = new ArrayList<>();
TransportAddress addr = new TransportAddress(externalIP, port, Transport.UDP);
HostCandidate base = new HostCandidate(socket, component);
UPNPCandidate candidate = new UPNPCandidate(addr, base, component, device);
IceSocketWrapper stunSocket = candidate.getStunSocket(null);
candidate.getStunStack().addSocket(stunSocket);
component.getComponentSocket().add(candidate.getCandidateIceSocketWrapper());
ret.add(candidate);
ret.add(base);
return ret;
}
