@Override
public HandshakeBuilder postProcessHandshakeResponseAsServer(
ClientHandshake request, ServerHandshakeBuilder response) throws InvalidHandshakeException {
response.put("Upgrade", "websocket");
response.put(
"Connection",
request.getFieldValue("Connection")); // to respond to a Connection keep alives
response.setHttpStatusMessage("Switching Protocols");
String seckey = request.getFieldValue("Sec-WebSocket-Key");
if (seckey == null) throw new InvalidHandshakeException("missing Sec-WebSocket-Key");
response.put("Sec-WebSocket-Accept", generateFinalKey(seckey));
return response;
}
@Override
public HandshakeState acceptHandshakeAsClient(ClientHandshake request, ServerHandshake response)
throws InvalidHandshakeException {
if (!request.hasFieldValue("Sec-WebSocket-Key")
|| !response.hasFieldValue("Sec-WebSocket-Accept")) return HandshakeState.NOT_MATCHED;
String seckey_answere = response.getFieldValue("Sec-WebSocket-Accept");
String seckey_challenge = request.getFieldValue("Sec-WebSocket-Key");
seckey_challenge = generateFinalKey(seckey_challenge);
if (seckey_challenge.equals(seckey_answere)) return HandshakeState.MATCHED;
return HandshakeState.NOT_MATCHED;
}
@Override
public void onOpen(WebSocket conn, ClientHandshake handshake) {
this.sendToAll("new connection: " + handshake.getResourceDescriptor());
System.out.println(
conn.getRemoteSocketAddress().getAddress().getHostAddress() + " entered the room!");
}