/**
* Server-side handshake.
*
* @param request received handshake request.
* @param extensionContext extension context.
* @return created handshake.
* @throws HandshakeException when there is problem with received {@link UpgradeRequest}.
*/
static Handshake createServerHandshake(
UpgradeRequest request, ExtendedExtension.ExtensionContext extensionContext)
throws HandshakeException {
final Handshake handshake = new Handshake();
handshake.incomingRequest = request;
handshake.extensionContext = extensionContext;
checkForHeader(request.getHeader(UpgradeRequest.UPGRADE), UpgradeRequest.UPGRADE, "WebSocket");
checkForHeader(
request.getHeader(UpgradeRequest.CONNECTION),
UpgradeRequest.CONNECTION,
UpgradeRequest.UPGRADE);
// TODO - trim?
final String protocolHeader = request.getHeader(HandshakeRequest.SEC_WEBSOCKET_PROTOCOL);
handshake.subProtocols =
(protocolHeader == null
? Collections.<String>emptyList()
: Arrays.asList(protocolHeader.split(",")));
if (request.getHeader(UpgradeRequest.HOST) == null) {
throw new HandshakeException(LocalizationMessages.HEADERS_MISSING());
}
// final String queryString = request.getQueryString();
// if (queryString != null) {
// if (!queryString.isEmpty()) {
// }
//// Parameters queryParameters = new Parameters();
//// queryParameters.processParameters(queryString);
//// final Set<String> names = queryParameters.getParameterNames();
//// for (String name : names) {
//// queryParams.put(name, queryParameters.getParameterValues(name));
//// }
// }
List<String> value = request.getHeaders().get(HandshakeRequest.SEC_WEBSOCKET_EXTENSIONS);
if (value != null) {
handshake.extensions = TyrusExtension.fromHeaders(value);
}
handshake.secKey =
SecKey.generateServerKey(new SecKey(request.getHeader(HandshakeRequest.SEC_WEBSOCKET_KEY)));
return handshake;
}
/**
* Client side only - validate server response.
*
* @param response response to be validated.
* @throws HandshakeException when HTTP Status of received response is not 101 - Switching
* protocols.
*/
public void validateServerResponse(UpgradeResponse response) throws HandshakeException {
if (RESPONSE_CODE_VALUE != response.getStatus()) {
throw new HandshakeException(
response.getStatus(),
LocalizationMessages.INVALID_RESPONSE_CODE(RESPONSE_CODE_VALUE, response.getStatus()));
}
checkForHeader(
response.getFirstHeaderValue(UpgradeRequest.UPGRADE),
UpgradeRequest.UPGRADE,
UpgradeRequest.WEBSOCKET);
checkForHeader(
response.getFirstHeaderValue(UpgradeRequest.CONNECTION),
UpgradeRequest.CONNECTION,
UpgradeRequest.UPGRADE);
// if (!getSubProtocols().isEmpty()) {
// checkForHeader(response.getHeaders(), WebSocketEngine.SEC_WS_PROTOCOL_HEADER,
// WebSocketEngine.SEC_WS_PROTOCOL_HEADER);
// }
secKey.validateServerKey(response.getFirstHeaderValue(HandshakeResponse.SEC_WEBSOCKET_ACCEPT));
}