private boolean exitAfterSpecialCases(
final HttpResponse response, final Channel channel, final NettyResponseFuture<?> future)
throws Exception {
HttpRequest httpRequest = future.getNettyRequest().getHttpRequest();
ProxyServer proxyServer = future.getProxyServer();
int statusCode = response.getStatus().code();
Request request = future.getCurrentRequest();
Realm realm = request.getRealm() != null ? request.getRealm() : config.getRealm();
if (statusCode == UNAUTHORIZED_401) {
return exitAfterHandling401(
channel, future, response, request, statusCode, realm, proxyServer, httpRequest);
} else if (statusCode == PROXY_AUTHENTICATION_REQUIRED_407) {
return exitAfterHandling407(
channel, future, response, request, statusCode, proxyServer, httpRequest);
} else if (statusCode == CONTINUE_100) {
return exitAfterHandling100(channel, future, statusCode);
} else if (REDIRECT_STATUSES.contains(statusCode)) {
return exitAfterHandlingRedirect(channel, future, response, request, statusCode, realm);
} else if (httpRequest.getMethod() == HttpMethod.CONNECT && statusCode == OK_200) {
return exitAfterHandlingConnect(
channel, future, request, proxyServer, statusCode, httpRequest);
}
return false;
}
private boolean handleResponseAndExit(
final Channel channel,
final NettyResponseFuture<?> future,
AsyncHandler<?> handler,
HttpRequest httpRequest,
ProxyServer proxyServer,
HttpResponse response)
throws Exception {
// store the original headers so we can re-send all them to
// the handler in case of trailing headers
future.setHttpHeaders(response.headers());
future.setKeepAlive(
!HttpHeaders.Values.CLOSE.equalsIgnoreCase(
response.headers().get(HttpHeaders.Names.CONNECTION)));
HttpResponseStatus status = new ResponseStatus(future.getURI(), response, config);
int statusCode = response.getStatus().code();
Request request = future.getRequest();
Realm realm = request.getRealm() != null ? request.getRealm() : config.getRealm();
HttpResponseHeaders responseHeaders = new ResponseHeaders(future.getURI(), response.headers());
return handleResponseFiltersReplayRequestAndExit(channel, future, status, responseHeaders) //
|| handleUnauthorizedAndExit(
statusCode, realm, request, response, future, proxyServer, channel) //
|| handleContinueAndExit(channel, future, statusCode) //
|| handleProxyAuthenticationRequiredAndExit(
statusCode, realm, request, response, future, proxyServer)
|| handleConnectOKAndExit(
statusCode, realm, request, httpRequest, response, future, proxyServer, channel) //
|| handleRedirectAndExit(request, future, response, channel) //
|| handleHanderAndExit(channel, future, handler, status, responseHeaders, response);
}
@Override
public void call() throws Exception {
WebSocketUpgradeHandler handler =
WebSocketUpgradeHandler.class.cast(future.getAsyncHandler());
Request request = future.getRequest();
HttpResponseStatus status =
new NettyResponseStatus(future.getUri(), config, response, channel);
HttpResponseHeaders responseHeaders = new NettyResponseHeaders(response.headers());
Realm realm = request.getRealm() != null ? request.getRealm() : config.getRealm();
if (exitAfterProcessingFilters(channel, future, handler, status, responseHeaders)) {
return;
}
future.setHttpHeaders(response.headers());
if (exitAfterHandlingRedirect(
channel, future, response, request, response.getStatus().code(), realm)) return;
boolean validStatus = response.getStatus().equals(SWITCHING_PROTOCOLS);
boolean validUpgrade = response.headers().get(HttpHeaders.Names.UPGRADE) != null;
String connection = response.headers().get(HttpHeaders.Names.CONNECTION);
if (connection == null)
connection =
response.headers().get(HttpHeaders.Names.CONNECTION.toLowerCase(Locale.ENGLISH));
boolean validConnection = HttpHeaders.Values.UPGRADE.equalsIgnoreCase(connection);
boolean statusReceived = handler.onStatusReceived(status) == State.UPGRADE;
if (!statusReceived) {
try {
handler.onCompleted();
} finally {
future.done();
}
return;
}
final boolean headerOK = handler.onHeadersReceived(responseHeaders) == State.CONTINUE;
if (!headerOK || !validStatus || !validUpgrade || !validConnection) {
requestSender.abort(channel, future, new IOException("Invalid handshake response"));
return;
}
String accept = response.headers().get(HttpHeaders.Names.SEC_WEBSOCKET_ACCEPT);
String key =
getAcceptKey(
future
.getNettyRequest()
.getHttpRequest()
.headers()
.get(HttpHeaders.Names.SEC_WEBSOCKET_KEY));
if (accept == null || !accept.equals(key)) {
requestSender.abort(
channel,
future,
new IOException(
String.format("Invalid challenge. Actual: %s. Expected: %s", accept, key)));
}
channelManager.upgradePipelineForWebSockets(channel.pipeline());
invokeOnSucces(channel, handler);
future.done();
// set back the future so the protocol gets notified of frames
Channels.setAttribute(channel, future);
}
public NettyRequest newNettyRequest(
Request request, boolean forceConnect, ProxyServer proxyServer) throws IOException {
Uri uri = request.getUri();
HttpMethod method = forceConnect ? HttpMethod.CONNECT : HttpMethod.valueOf(request.getMethod());
boolean connect = method == HttpMethod.CONNECT;
boolean allowConnectionPooling =
config.isAllowPoolingConnections()
&& (!HttpUtils.isSecure(uri) || config.isAllowPoolingSslConnections());
HttpVersion httpVersion =
!allowConnectionPooling || (connect && proxyServer.isForceHttp10())
? HttpVersion.HTTP_1_0
: HttpVersion.HTTP_1_1;
String requestUri = requestUri(uri, proxyServer, connect);
NettyBody body = body(request, connect);
HttpRequest httpRequest;
NettyRequest nettyRequest;
if (body instanceof NettyDirectBody) {
ChannelBuffer buffer = NettyDirectBody.class.cast(body).channelBuffer();
httpRequest = new DefaultHttpRequest(httpVersion, method, requestUri);
// body is passed as null as it's written directly with the request
httpRequest.setContent(buffer);
nettyRequest = new NettyRequest(httpRequest, null);
} else {
httpRequest = new DefaultHttpRequest(httpVersion, method, requestUri);
nettyRequest = new NettyRequest(httpRequest, body);
}
HttpHeaders headers = httpRequest.headers();
if (!connect) {
// assign headers as configured on request
for (Entry<String, List<String>> header : request.getHeaders()) {
headers.set(header.getKey(), header.getValue());
}
if (isNonEmpty(request.getCookies()))
headers.set(COOKIE, CookieEncoder.encode(request.getCookies()));
if (config.isCompressionEnforced() && !headers.contains(ACCEPT_ENCODING))
headers.set(ACCEPT_ENCODING, GZIP_DEFLATE);
}
if (body != null) {
if (body.getContentLength() < 0) headers.set(TRANSFER_ENCODING, HttpHeaders.Values.CHUNKED);
else headers.set(CONTENT_LENGTH, body.getContentLength());
if (body.getContentType() != null) headers.set(CONTENT_TYPE, body.getContentType());
}
// connection header and friends
boolean webSocket = isWebSocket(uri.getScheme());
if (!connect && webSocket) {
String origin =
"http://"
+ uri.getHost()
+ ":"
+ (uri.getPort() == -1 ? isSecure(uri.getScheme()) ? 443 : 80 : uri.getPort());
headers
.set(UPGRADE, HttpHeaders.Values.WEBSOCKET) //
.set(CONNECTION, HttpHeaders.Values.UPGRADE) //
.set(ORIGIN, origin) //
.set(SEC_WEBSOCKET_KEY, getKey()) //
.set(SEC_WEBSOCKET_VERSION, "13");
} else if (!headers.contains(CONNECTION)) {
String connectionHeaderValue =
connectionHeader(allowConnectionPooling, httpVersion == HttpVersion.HTTP_1_1);
if (connectionHeaderValue != null) headers.set(CONNECTION, connectionHeaderValue);
}
if (!headers.contains(HOST)) headers.set(HOST, hostHeader(request, uri));
Realm realm = request.getRealm() != null ? request.getRealm() : config.getRealm();
// don't override authorization but append
addAuthorizationHeader(headers, systematicAuthorizationHeader(request, realm));
setProxyAuthorizationHeader(
headers, systematicProxyAuthorizationHeader(request, proxyServer, realm, connect));
// Add default accept headers
if (!headers.contains(ACCEPT)) headers.set(ACCEPT, "*/*");
// Add default user agent
if (!headers.contains(USER_AGENT) && config.getUserAgent() != null)
headers.set(USER_AGENT, config.getUserAgent());
return nettyRequest;
}