@Override
public IoFuture<WebSocketChannel> handshake(final HttpServerExchange exchange) {
String origin = exchange.getRequestHeaders().getFirst(Headers.SEC_WEB_SOCKET_ORIGIN);
if (origin != null) {
exchange.getResponseHeaders().put(Headers.SEC_WEB_SOCKET_ORIGIN, origin);
}
String protocol = exchange.getRequestHeaders().getFirst(Headers.SEC_WEB_SOCKET_PROTOCOL);
if (protocol != null) {
exchange.getResponseHeaders().put(Headers.SEC_WEB_SOCKET_PROTOCOL, protocol);
}
exchange
.getResponseHeaders()
.put(Headers.SEC_WEB_SOCKET_LOCATION, getWebSocketLocation(exchange));
final String key = exchange.getRequestHeaders().getFirst(Headers.SEC_WEB_SOCKET_KEY);
try {
final String solution = solve(key);
exchange.getResponseHeaders().put(Headers.SEC_WEB_SOCKET_ACCEPT, solution);
return performUpgrade(exchange);
} catch (NoSuchAlgorithmException e) {
final ConcreteIoFuture<WebSocketChannel> ioFuture = new ConcreteIoFuture<WebSocketChannel>();
ioFuture.setException(new IOException(new WebSocketHandshakeException(e)));
return ioFuture;
}
}
