private HandshakeResponse createVersionZero(HandshakeRequest handshakeRequest) {
String challenge =
challengeCalculator.calculateVersion1Challenge(
handshakeRequest.getFields().get("Sec-WebSocket-Key1"),
handshakeRequest.getFields().get("Sec-WebSocket-Key2"),
handshakeRequest.getRandomBits());
String message =
"HTTP/1.1 101 WebSocket Protocol Handshake"
+ LF
+ "Upgrade: WebSocket"
+ LF
+ "Connection: Upgrade"
+ LF
+ "Sec-WebSocket-Origin: "
+ handshakeRequest.getFields().get("Origin")
+ LF
+ "Sec-WebSocket-Location: ws://localhost:"
+ WebSocketServer.getPort()
+ handshakeRequest.getPath()
+ LF
+ "Sec-WebSocket-Protocol: sample"
+ LF
+ LF
+ challenge;
return new HandshakeResponse(message);
}
private HandshakeResponse createVersionSixOrHigher(HandshakeRequest handshakeRequest) {
String secWebSocketKey = handshakeRequest.getFields().get("Sec-WebSocket-Key");
String challenge = challengeCalculator.calculateVersion6Challenge(secWebSocketKey);
String message =
"HTTP/1.1 101 Switching Protocols"
+ LF
+ "Upgrade: webSocket"
+ LF
+ "Connection: Upgrade"
+ LF
+ "Sec-WebSocket-Accept: "
+ challenge
+ LF
+ LF;
return new HandshakeResponse(message);
}
private int getVersion(HandshakeRequest handshakeRequest) {
String version = handshakeRequest.getFields().get("Sec-WebSocket-Version");
return version != null ? Integer.parseInt(version) : 0;
}
