i have a question. who can help me? it'll be very appreciate. i wanna make websocketclient but my code blocked at handShaker.handshake(ch).syncUninterruptibly();...
websocket server is working well becuase i've test it using JS.only netty client not working..
belows is my code
public void Start() throws Exception {
EventLoopGroup group = new NioEventLoopGroup();
try{
Bootstrap b = new Bootstrap();
URI uri = new URI(url);
WebSocketClientHandshaker handShaker = WebSocketClientHandshakerFactory.newHandshaker(uri, WebSocketVersion.V13, null, false, null);
WebSocketClientHandler handler = new WebSocketClientHandler(handShaker, actionHandlers);
b.group(group)
.channel(NioSocketChannel.class)
.handler(new ChannelInitializer<SocketChannel>() {
#Override
public void initChannel(SocketChannel ch) throws Exception {
ChannelPipeline pipeline = ch.pipeline();
pipeline.addLast(new HttpClientCodec());
pipeline.addLast(new HttpObjectAggregator(8192));
pipeline.addLast(handler);
}
});
ch = b.connect(uri.getHost(), uri.getPort()).sync().channel();
//handler.handShakeFuture().sync();
handShaker.handshake(ch).syncUninterruptibly();
ch.closeFuture().awaitUninterruptibly();
}catch(Exception e) {
e.printStackTrace();
}
}
Related
I'm developing a web application using Spring Boot Web and I want to communicate with a TCP socket server using IP and Port (connect, send, receive and disconnect).
I'm new to Spring Boot and I searched many days in the internet without any working result and the Websocket solution will not work in this case.
UPDATE (please confirm)
I think that I can use the standard java.io.* and java.net.* in Spring Boot Web juste like any other Java Program:
try {
try (Socket clientSocket = new Socket(IP, PORT);
PrintWriter out = new PrintWriter(
clientSocket.getOutputStream(), true);
BufferedReader br = new BufferedReader(
new InputStreamReader(
clientSocket.getInputStream()))) {
System.out.println("Connected to server");
String str = "test";
out.write(str);
out.flush();
char[] cbuf = new char[size];
br.read(cbuf, 0, size);
System.out.println(cbuf);
}
} catch (IOException ex) {
ex.printStackTrace();
}
This is my own version of a simple tcp client developed for SpringBoot.
First, you have to open the connection with the openConnection() method. Then, you can send messages with sendMessage() method and receive messages with takeMessage() method.
#Service("socketClient")
public class SocketClient {
#Value("brain.connection.port")
int tcpPort;
#Value("brain.connection.ip")
String ipConnection;
private Socket clientSocket;
private DataOutputStream outToTCP;
private BufferedReader inFromTCP;
private PriorityBlockingQueue<String> incomingMessages = new PriorityBlockingQueue<>();
private PriorityBlockingQueue<String> outcomingMessages = new PriorityBlockingQueue<>();
private final Logger log = LoggerFactory.getLogger(this.getClass());
private Thread sendDataToTCP = new Thread(){
public void run(){
String sentence = "";
log.info("Starting Backend -> TCP communication thread");
while(true){
try {
sentence = incomingMessages.take();
outToTCP.writeBytes(sentence + '\n');
} catch (InterruptedException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
};
private Thread getDataFromTCP = new Thread(){
public void run(){
log.info("Starting TCP -> Backend communication thread");
while(true){
String response = "";
try {
response = inFromTCP.readLine();
if (response == null)
break;
outcomingMessages.put(response);
} catch (IOException e) {
e.printStackTrace();
}
}
}
};
public void openConnection(){
try {
this.clientSocket = new Socket(ipConnection, tcpPort);
outToTCP = new DataOutputStream(clientSocket.getOutputStream());
inFromTCP = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
getDataFromTCP.start();
sendDataToTCP.start();
} catch (IOException e) {
e.printStackTrace();
}
}
//Send messages to Socket.
public void sendMessage(String message) throws InterruptedException {
incomingMessages.put(message);
}
//Take Message from Socket
public String takeMessage() throws InterruptedException {
return outcomingMessages.take();
}
}
Writing JUnit Integrtaion tests for a REST endpoint which sets secure cookies, can't get past the ResourceAccessException error.
Requirement is to do a https://localhost:8443 request.
Have tried using the customRestTemplate
Getting the folloiwng exception.
org.springframework.web.client.ResourceAccessException: I/O error on GET request for "https://localhost:8443/dcs": Connect to localhost:8443 [localhost/127.0.0.1, localhost/0:0:0:0:0:0:0:1] failed: Connection refused: connect; nested exception is org.apache.http.conn.HttpHostConnectException
Below is the code.
#RunWith(SpringRunner.class)
#SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
public class DcsServiceTests {
#Autowired
RestTemplateBuilder restTemplateBuilder;
#Autowired
private TestRestTemplate testRestTemplate;
#Test
public void testGet_ImageResponse() throws Exception {
//Arrange
//Act
ResponseEntity<byte[]> response = testRestTemplate.getForEntity(url, byte[].class);
//Assert
//Response Status
assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
//Response has cookie
assertThat(response.getHeaders().containsKey("Set-Cookie")).isTrue();
}
#PostConstruct
public void initialize() {
// Lambda expression not working, TBD - Java version used.
//TrustStrategy acceptingTrustStrategy = (X509Certificate[] chain, String authType) -> true;
final TrustStrategy acceptingTrustStrategy = new TrustStrategy() {
#Override
public boolean isTrusted(java.security.cert.X509Certificate[] arg0, String arg1)
throws CertificateException {
return true;
}
};
HttpComponentsClientHttpRequestFactory requestFactory =
new HttpComponentsClientHttpRequestFactory();
try {
SSLContext sslContext = org.apache.http.ssl.SSLContexts.custom()
.loadTrustMaterial(null, acceptingTrustStrategy)
.build();
SSLConnectionSocketFactory csf = new SSLConnectionSocketFactory(sslContext);
CloseableHttpClient httpClient = HttpClients.custom()
.setSSLSocketFactory(csf)
.build();
requestFactory.setHttpClient(httpClient);
}
catch (Exception e) {
System.out.println("Exception occured creating Request Factory");
}
RestTemplate customTemplate = restTemplateBuilder
.requestFactory(requestFactory)
.rootUri("https://localhost:8443")
.build();
this.testRestTemplate = new TestRestTemplate(
customTemplate,
null,
null, // Not using basic auth
TestRestTemplate.HttpClientOption.ENABLE_COOKIES); // Cookie support
}
}
Disabling SSL and then using testRestTemplate with exchange method worked. Secured cookies works as well, just that the headers needs to be parsed to validate results in Unit test cases
#Bean
public Boolean disableSSLValidation() throws Exception {
final SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, new TrustManager[] { new X509TrustManager() {
#Override
public void checkClientTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {
}
#Override
public void checkServerTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {
}
#Override
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[0];
}
} }, null);
HttpsURLConnection.setDefaultSSLSocketFactory(sslContext.getSocketFactory());
HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
return true;
}
public void hostNameVerifier() {
final HostnameVerifier defaultHostnameVerifier = javax.net.ssl.HttpsURLConnection.getDefaultHostnameVerifier ();
final HostnameVerifier localhostAcceptedHostnameVerifier = new javax.net.ssl.HostnameVerifier () {
public boolean verify ( String hostname, javax.net.ssl.SSLSession sslSession ) {
if ( hostname.equals ( "localhost" ) ) {
return true;
}
return defaultHostnameVerifier.verify ( hostname, sslSession );
}
};
javax.net.ssl.HttpsURLConnection.setDefaultHostnameVerifier ( localhostAcceptedHostnameVerifier );
}
#Test
public void testGet_ImageResponse() throws Exception {
//Arrange
String url = getUrl() + "/xyz?s_action=test&s_type=i";
//Act
ResponseEntity<byte[]> response = restTemplate.getForEntity(url, byte[].class);
//Assert
//Response Status
assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
//Response has cookie
assertThat(response.getHeaders().containsKey("Set-Cookie")).isTrue();
//Extract cookie from header
List<String> cookies = response.getHeaders().get("Set-Cookie");
//Construct cookie from RAW Header Response
Cookie cookie = RawCookieParser.constructCookieFromHeaderResponse(response.getHeaders().get("Set-Cookie").toString());
//Cookies name matches
//Cookie value cannot be matched because value is being set from external JAR
assertEquals(cookie.getName(), appConfig.getName());
//Cookie domain matches
assertEquals(cookie.getDomain(), appConfig.getDomain());
}
public class RawCookieParser {
/*
* Construct a cookie object by parsing the HTTP Header response
*/
public static Cookie constructCookieFromHeaderResponse(String input) throws Exception {
String rawCookie = input.replace("[", "").replace("]", "");
String[] rawCookieParams = rawCookie.split(";");
String[] rawCookieNameAndValue = rawCookieParams[0].split("=");
if (rawCookieNameAndValue.length != 2) {
throw new Exception("Invalid cookie: missing name and value.");
}
String cookieName = rawCookieNameAndValue[0].trim();
String cookieValue = rawCookieNameAndValue[1].trim();
Cookie cookie = new Cookie(cookieName, cookieValue);
for (int i = 1; i < rawCookieParams.length; i++) {
String rawCookieParamNameAndValue[] = rawCookieParams[i].trim().split("=");
String paramName = rawCookieParamNameAndValue[0].trim();
if (rawCookieParamNameAndValue.length == 2) {
String paramValue = rawCookieParamNameAndValue[1].trim();
if (paramName.equalsIgnoreCase("secure")) {
cookie.setSecure(true);
} else if (paramName.equalsIgnoreCase("max-age")) {
int maxAge = Integer.parseInt(paramValue);
cookie.setMaxAge(maxAge);
} else if (paramName.equalsIgnoreCase("domain")) {
cookie.setDomain(paramValue);
} else if (paramName.equalsIgnoreCase("path")) {
cookie.setPath(paramValue);
}
}
}
return cookie;
}
}
I want to write Junit UT case for my websocket serverendpoint code using embedded Jetty.
i tried things explained in below link:
JUnit test with javax.websocket on embedded Jetty throws RejectedExecutionException: NonBlockingThread
I want to test my onMessage callback for websocket.
If i dont use server.join() method then the connection closes as soon as it opens.
If i use server.join() method nothing happens after joining.
Below is My code.
Server startup code::
public class EmbeddedJettyServer {
private final int port;
private Server server;
public EmbeddedJettyServer(int port) {
this.port = port;
}
public void start() throws Exception {
server = new Server();
ServerConnector connector = new ServerConnector(server);
connector.setPort(8080);
server.addConnector(connector);
// Setup the basic application "context" for this application at "/"
// This is also known as the handler tree (in jetty speak)
ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
context.setContextPath("/");
server.setHandler(context);
try {
// Initialize javax.websocket layer
ServerContainer wscontainer = WebSocketServerContainerInitializer.configureContext(context);
// Add WebSocket endpoint to javax.websocket layer
wscontainer.addEndpoint(WebSocketServer.class);
System.out.println("Begin start");
server.start();
server.dump(System.err);
server.join();
} catch (Throwable t) {
t.printStackTrace(System.err);
}
}
public void stop() throws Exception {
server.stop();
LOGGER.info("Jetty server stopped");
}
public URI getWebsocketUri(Class<WebSocketServer> class1) {
return server.getURI();
}
}
Client Code:
#ClientEndpoint()
public class WebSocketClientJetty {
WebSocketContainer container;
public Session connect(URI uri) throws Exception {
WebSocketContainer container = ContainerProvider.getWebSocketContainer();
try {
// Attempt Connect
Session session = container.connectToServer(WebSocketClientJetty.class,uri);
// return container.connectToServer(WebSocketClientJetty.class, uri);
session.getBasicRemote().sendText("Hello");
// Close session
// session.close();
return session;
} finally {
}
}
public void stop() throws Exception{
if (container instanceof LifeCycle) {
((LifeCycle) container).stop();
}
}
#OnOpen
public void onWebSocketConnect(Session sess)
{
System.out.println("Socket Connected: " + sess);
}
#OnMessage
public void onWebSocketText(String message)
{
System.out.println("Received TEXT message: " + message);
}
#OnClose
public void onWebSocketClose(CloseReason reason)
{
System.out.println("Socket Closed: " + reason);
}
#OnError
public void onWebSocketError(Throwable cause)
{
cause.printStackTrace(System.err);
}
}
Serverendpoint code:
#ServerEndpoint(value = "/echo",
encoders={JsonEncoder.class})
public class WebSocketServer {
private static final Logger LOGGER =
#OnOpen
public void onOpen(Session session){
System.out.println("onopen");
some code....
}
#OnMessage
public void onMessage(String message, Session session) throws IOException{
System.out.println("onmessage");
....
}
#OnClose
public void onClose(Session session){
System.out.println("onClose");
...
}
}
Ut case:
public class WebSocketJettyTest {
private static EmbeddedJettyServer server;
#ClassRule
public static final ExternalResource integrationServer = new ExternalResource() {
#Override
protected void before() throws Throwable {
System.out.println("Starting...");
server = new EmbeddedJettyServer(8080);
server.start();
System.out.println("Started");
}
};
#Before
public void setUp() throws Exception {
}
#After
public void shutdown() throws Exception {
server.stop();
}
#Test
public void testSocket() throws Exception {
/*URI uri = server.getWebsocketUri(WebSocketServer.class);*/
URI uri = URI.create("ws://localhost:8080/echo");
WebSocketClientJetty client = new WebSocketClientJetty();
Session session = client.connect(uri);
session.getBasicRemote().sendText("hello");
Thread.sleep(6000);
client.stop();
}
}
Drop the call to
server.join();
That just makes the current thread wait until the server thread stops.
Which is making it difficult for you.
I using httpcomponenets nio server to handle post request file upload.
Below is the sample code. I have the complete data in data byte array including params, uploaded file etc. separated by boundary. Is there a parser utility to parse data and get the parameters? Something like request.getParameter("param1"), request.getFile() etc.
public static void main(String[] args) throws Exception {
int port = 8280;
// Create HTTP protocol processing chain
HttpProcessor httpproc = HttpProcessorBuilder.create()
.add(new ResponseDate())
.add(new ResponseServer("Test/1.1"))
.add(new ResponseContent())
.add(new ResponseConnControl()).build();
// Create request handler registry
UriHttpAsyncRequestHandlerMapper reqistry = new UriHttpAsyncRequestHandlerMapper();
// Register the default handler for all URIs
reqistry.register("/test*", new RequestHandler());
// Create server-side HTTP protocol handler
HttpAsyncService protocolHandler = new HttpAsyncService(httpproc, reqistry) {
#Override
public void connected(final NHttpServerConnection conn) {
System.out.println(conn + ": connection open");
super.connected(conn);
}
#Override
public void closed(final NHttpServerConnection conn) {
System.out.println(conn + ": connection closed");
super.closed(conn);
}
};
// Create HTTP connection factory
NHttpConnectionFactory<DefaultNHttpServerConnection> connFactory;
connFactory = new DefaultNHttpServerConnectionFactory(
ConnectionConfig.DEFAULT);
// Create server-side I/O event dispatch
IOEventDispatch ioEventDispatch = new DefaultHttpServerIODispatch(protocolHandler, connFactory);
// Set I/O reactor defaults
IOReactorConfig config = IOReactorConfig.custom()
.setIoThreadCount(1)
.setSoTimeout(3000)
.setConnectTimeout(3000)
.build();
// Create server-side I/O reactor
ListeningIOReactor ioReactor = new DefaultListeningIOReactor(config);
try {
// Listen of the given port
ioReactor.listen(new InetSocketAddress(port));
// Ready to go!
ioReactor.execute(ioEventDispatch);
} catch (InterruptedIOException ex) {
System.err.println("Interrupted");
} catch (IOException e) {
System.err.println("I/O error: " + e.getMessage());
}
System.out.println("Shutdown");
}
public static class RequestHandler implements HttpAsyncRequestHandler<HttpRequest> {
public void handleInternal(HttpRequest httpRequest, HttpResponse httpResponse, HttpContext httpContext) throws HttpException, IOException {
HttpEntity entity = null;
if (httpRequest instanceof HttpEntityEnclosingRequest)
entity = ((HttpEntityEnclosingRequest)httpRequest).getEntity();
byte[] data;
if (entity == null) {
data = new byte [0];
} else {
data = EntityUtils.toByteArray(entity);
}
System.out.println(new String(data));
httpResponse.setEntity(new StringEntity("success response"));
}
#Override public HttpAsyncRequestConsumer<HttpRequest> processRequest(HttpRequest request, HttpContext context) throws HttpException, IOException {
return new BasicAsyncRequestConsumer();
}
#Override
public void handle(HttpRequest request, HttpAsyncExchange httpExchange, HttpContext context) throws HttpException, IOException {
HttpResponse response = httpExchange.getResponse();
handleInternal(request, response, context);
httpExchange.submitResponse(new BasicAsyncResponseProducer(response));
}
}
MIME content parsing (as well handling of content of any type) is out of scope for Apache HttpComponents. Please consider using Apache Mime4J.
I am trying to connect to a REST API in an application deployed on weblogic 10.3.6. The sample code works fine when run independently (outside weblogic server). But when I deploy the same code it starts giving me this error
Failed to communicate with proxy: proxy.xxx.xxx/xxxx. Will try connection api.forecast.io/443 now.
weblogic.net.http.HttpUnauthorizedException: Proxy or Server Authentication Required
at weblogic.net.http.HttpURLConnection.getAuthInfo(HttpURLConnection.java:297)
at weblogic.net.http.HttpsClient.makeConnectionUsingProxy(HttpsClient.java:440)
at weblogic.net.http.HttpsClient.openServer(HttpsClient.java:351)
at weblogic.net.http.HttpsClient.New(HttpsClient.java:527)
at weblogic.net.http.HttpsURLConnection.connect(HttpsURLConnection.java:239)
Code that we are running is as below
try {
HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
SSLContext context = SSLContext.getInstance("TLS");
context.init(null, new X509TrustManager[] { new X509TrustManager() {
public void checkClientTrusted(X509Certificate[] chain,
String authType) throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] chain,
String authType) throws CertificateException {
}
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[0];
}
} }, new SecureRandom());
HttpsURLConnection.setDefaultSSLSocketFactory(context.getSocketFactory());
} catch (Exception e) { // should never happen
e.printStackTrace();
}
try {
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("proxy.xxxx.xxxx", xxxx));
URL url = new URL("https://api.forecast.io/forecast/xxxxxxxxx/12.9667,77.5667");
HttpURLConnection conn = (HttpURLConnection)url.openConnection(proxy);
conn.setRequestMethod("GET");
conn.setRequestProperty("Accept", "application/json");
if (conn.getResponseCode() != 200) {
throw new RuntimeException("Failed : HTTP error code : " + conn.getResponseCode());
}
BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
String output;
System.out.println("Output from Server .... \n");
while ((output = br.readLine()) != null) {
System.out.println(output);
}
conn.disconnect();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return "";
Our proxy is a company proxy and doesn't have any username/password. We are stuck on this issue for sometime now. Any suggestions/pointers will be really appreciated.