Examples of io.netty.channel.embedded.EmbeddedChannel

io.netty.channel.embedded.EmbeddedChannel
Base class for {@link Channel} implementations that are used in an embedded fashion.

    public void htmlFileTestTransport() throws Exception {
        final String serviceName = "/echo";
        final String sessionUrl = serviceName + "/222/" + UUID.randomUUID().toString();
        final SockJsConfig config = SockJsConfig.withPrefix(serviceName).maxStreamingBytesSize(4096).build();
        final SockJsServiceFactory service = echoService(config);
        final EmbeddedChannel ch = channelForService(service);
        removeLastInboundMessageHandlers(ch);


        final FullHttpRequest request = httpRequest(sessionUrl + Transports.Type.HTMLFILE.path() + "?c=callback", GET);
        ch.writeInbound(request);
        final HttpResponse response =  ch.readOutbound();
        assertThat(response.getStatus(), equalTo(HttpResponseStatus.OK));
        assertThat(response.headers().get(CONTENT_TYPE), equalTo(Transports.CONTENT_TYPE_HTML));


        final HttpContent headerChunk = ch.readOutbound();
        assertThat(headerChunk.content().readableBytes(), is(greaterThan(1024)));
        final String header = headerChunk.content().toString(UTF_8);
        assertThat(header, containsString("var c = parent.callback"));
        final HttpContent openChunk = ch.readOutbound();
        assertThat(openChunk.content().toString(UTF_8), equalTo("<script>\np(\"o\");\n</script>\r\n"));


        final FullHttpResponse validSend = xhrSendRequest(sessionUrl, "[\"x\"]", service);
        assertThat(validSend.getStatus(), is(HttpResponseStatus.NO_CONTENT));


        final DefaultHttpContent messageChunk = ch.readOutbound();
        assertThat(messageChunk.content().toString(UTF_8), equalTo("<script>\np(\"a[\\\"x\\\"]\");\n</script>\r\n"));
        ch.finish();
    }

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    public void htmlFileTestNoCallback() throws Exception {
        final String serviceName = "/echo";
        final String sessionUrl = serviceName + "/222/" + UUID.randomUUID().toString();
        final SockJsConfig config = SockJsConfig.withPrefix(serviceName).maxStreamingBytesSize(4096).build();
        final SockJsServiceFactory service = echoService(config);
        final EmbeddedChannel ch = channelForService(service);
        removeLastInboundMessageHandlers(ch);


        final FullHttpRequest request = httpRequest(sessionUrl + Transports.Type.HTMLFILE.path() + "?c=", GET);
        ch.writeInbound(request);
        final FullHttpResponse response =  ch.readOutbound();
        assertThat(response.getStatus(), equalTo(HttpResponseStatus.INTERNAL_SERVER_ERROR));
        assertThat(response.content().toString(UTF_8), equalTo("\"callback\" parameter required"));
    }

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    public void htmlFileTestResponseLimit() throws Exception {
        final String serviceName = "/echo";
        final String sessionUrl = serviceName + "/222/" + UUID.randomUUID().toString();
        final SockJsConfig config = SockJsConfig.withPrefix(serviceName).maxStreamingBytesSize(4096).build();
        final SockJsServiceFactory service = echoService(config);
        final EmbeddedChannel ch = channelForService(service);
        removeLastInboundMessageHandlers(ch);


        final FullHttpRequest request = httpRequest(sessionUrl + Transports.Type.HTMLFILE.path() + "?c=callback", GET);
        ch.writeInbound(request);
        final HttpResponse response =  ch.readOutbound();
        assertThat(response.getStatus(), equalTo(HttpResponseStatus.OK));


        // read and discard header chunk
        ch.readOutbound();
        // read and discard open frame
        ch.readOutbound();


        final String msg = generateMessage(4096);
        final FullHttpResponse validSend = xhrSendRequest(sessionUrl, "[\"" + msg + "\"]", service);
        assertThat(validSend.getStatus(), is(HttpResponseStatus.NO_CONTENT));
        final DefaultHttpContent chunk = ch.readOutbound();
        assertThat(chunk.content().toString(UTF_8), equalTo("<script>\np(\"a[\\\"" + msg + "\\\"]\");\n</script>\r\n"));


        assertThat(ch.isOpen(), is(false));
    }

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    public void jsessionIdCookieTestXhr() throws Exception {
        assertSetCookie(Transports.Type.XHR.path());


        final String serviceName = "/cookie_needed_echo";
        final SockJsConfig config = SockJsConfig.withPrefix(serviceName).cookiesNeeded().build();
        final EmbeddedChannel ch = channelForService(echoService(config));
        removeLastInboundMessageHandlers(ch);
        final String sessionUrl = serviceName + "/abc/" + UUID.randomUUID().toString();
        final FullHttpRequest request = httpRequest(sessionUrl + Transports.Type.XHR.path(), GET);
        request.headers().set("Cookie", ClientCookieEncoder.encode("JSESSIONID", "abcdef"));
        ch.writeInbound(request);
        final FullHttpResponse response2 = ch.readOutbound();
        assertThat(response2.getStatus(), is(HttpResponseStatus.OK));
        assertSetCookie("abcdef", response2);
    }

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     */
    @Test
    public void rawWebsocketTestTransport() throws Exception {
        final String serviceName = "/echo";
        final SockJsServiceFactory echoServiceFactory = echoService();
        final EmbeddedChannel ch = wsChannelForService(echoServiceFactory);


        ch.writeInbound(webSocketUpgradeRequest(serviceName + "/websocket"));
        // Discard Switching Protocols response
        ch.readOutbound();
        ch.writeInbound(new TextWebSocketFrame("Hello world!\uffff"));
        final TextWebSocketFrame textFrame = (TextWebSocketFrame) readOutboundDiscardEmpty(ch);
        assertThat(textFrame.text(), equalTo("Hello world!\uffff"));
        ch.finish();
    }

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     * Equivalent to RawWebsocket.test_close in sockjs-protocol-0.3.3.py.
     */
    @Test
    public void rawWebsocketTestClose() throws Exception {
        final SockJsServiceFactory closeFactory = closeService();
        final EmbeddedChannel ch = wsChannelForService(closeFactory);
        ch.writeInbound(webSocketUpgradeRequest(closeFactory.config().prefix() + "/websocket"));
        assertThat(ch.isActive(), is(false));
        ch.finish();
    }

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    public void webSocketCloseSession() throws Exception {
        final String serviceName = "/closesession";
        final String sessionUrl = serviceName + "/222/" + UUID.randomUUID().toString();
        final SockJsConfig config = SockJsConfig.withPrefix(serviceName).build();
        final SockJsService sockJsService = mock(SockJsService.class);
        final EmbeddedChannel ch = wsChannelForService(factoryFor(sockJsService, config));


        final FullHttpRequest request = webSocketUpgradeRequest(sessionUrl + "/websocket", V13.toHttpHeaderValue());
        ch.writeInbound(request);


        // read and discard the HTTP Response (this will be a ByteBuf and not an object
        // as we have a HttpEncoder in the pipeline to start with.
        ch.readOutbound();


        assertThat(((TextWebSocketFrame) readOutboundDiscardEmpty(ch)).content().toString(UTF_8), equalTo("o"));


        ch.writeInbound(new CloseWebSocketFrame(1000, "Normal close"));
        final CloseWebSocketFrame closeFrame = ch.readOutbound();
        assertThat(closeFrame.statusCode(), is(1000));
        assertThat(closeFrame.reasonText(), equalTo("Normal close"));
        verify(sockJsService).onOpen(any(SockJsSessionContext.class));
        verify(sockJsService).onClose();
    }

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     */
    @Test
    public void handlingCloseTestCloseFrame() throws Exception {
        final SockJsServiceFactory serviceFactory = closeService();
        final String sessionUrl = serviceFactory.config().prefix() + "/222/" + UUID.randomUUID().toString();
        final EmbeddedChannel ch = channelForService(serviceFactory);
        removeLastInboundMessageHandlers(ch);
        final FullHttpRequest request = httpRequest(sessionUrl + Transports.Type.XHR_STREAMING.path(), GET);
        ch.writeInbound(request);


        final HttpResponse response =  ch.readOutbound();
        assertThat(response.getStatus(), equalTo(HttpResponseStatus.OK));
        //Read and discard prelude
        ch.readOutbound();
        // Read and discard of the open frame
        ch.readOutbound();


        final DefaultHttpContent closeResponse = ch.readOutbound();
        assertThat(closeResponse.content().toString(UTF_8), equalTo("c[3000,\"Go away!\"]\n"));


        final EmbeddedChannel ch2 = channelForService(serviceFactory);
        removeLastInboundMessageHandlers(ch2);
        final FullHttpRequest request2 = httpRequest(sessionUrl + Transports.Type.XHR_STREAMING.path(), GET);
        ch2.writeInbound(request2);


        final HttpResponse response2 =  ch2.readOutbound();
        assertThat(response2.getStatus(), equalTo(HttpResponseStatus.OK));
        //Read and discard prelude
        ch2.readOutbound();


        final DefaultHttpContent closeResponse2 = ch2.readOutbound();
        assertThat(closeResponse2.content().toString(UTF_8), equalTo("c[3000,\"Go away!\"]\n"));


        assertThat(ch.isActive(), is(false));
        assertThat(ch2.isActive(), is(false));
    }

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     */
    @Test
    public void handlingCloseTestCloseRequest() throws Exception {
        final SockJsServiceFactory serviceFactory = echoService();
        final String sessionUrl = serviceFactory.config().prefix() + "/222/" + UUID.randomUUID().toString();
        final EmbeddedChannel ch = channelForService(serviceFactory);
        removeLastInboundMessageHandlers(ch);
        final FullHttpRequest request = httpRequest(sessionUrl + Transports.Type.XHR_STREAMING.path(), POST);
        ch.writeInbound(request);


        final HttpResponse response =  ch.readOutbound();
        assertThat(response.getStatus(), equalTo(HttpResponseStatus.OK));
        //Read and discard prelude
        ch.readOutbound();
        final DefaultHttpContent openResponse = ch.readOutbound();
        assertThat(openResponse.content().toString(UTF_8), equalTo("o\n"));


        final EmbeddedChannel ch2 = channelForService(serviceFactory);
        removeLastInboundMessageHandlers(ch2);
        final FullHttpRequest request2 = httpRequest(sessionUrl + Transports.Type.XHR_STREAMING.path(), POST);
        ch2.writeInbound(request2);


        final HttpResponse response2 =  ch2.readOutbound();
        assertThat(response2.getStatus(), equalTo(HttpResponseStatus.OK));
        //Read and discard prelude
        ch2.readOutbound();


        final DefaultHttpContent closeResponse2 = ch2.readOutbound();
        assertThat(closeResponse2.content().toString(UTF_8), equalTo("c[2010,\"Another connection still open\"]\n"));


        assertThat(ch2.isActive(), is(false));
    }

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     */
    @Test
    public void handlingCloseTestAbortXhrStreaming() throws Exception {
        final SockJsServiceFactory echoFactory = echoService();
        final String sessionUrl = echoFactory.config().prefix() + "/222/" + UUID.randomUUID().toString();
        final EmbeddedChannel ch = channelForService(echoFactory);
        removeLastInboundMessageHandlers(ch);
        final FullHttpRequest request = httpRequest(sessionUrl + Transports.Type.XHR_STREAMING.path(), GET);
        ch.writeInbound(request);


        final HttpResponse response =  ch.readOutbound();
        assertThat(response.getStatus(), equalTo(HttpResponseStatus.OK));
        //Read and discard prelude
        ch.readOutbound();
        final DefaultHttpContent openResponse = ch.readOutbound();
        assertThat(openResponse.content().toString(UTF_8), equalTo("o\n"));


        final EmbeddedChannel ch2 = channelForService(echoFactory);
        removeLastInboundMessageHandlers(ch2);
        final FullHttpRequest request2 = httpRequest(sessionUrl + Transports.Type.XHR_STREAMING.path(), GET);
        ch2.writeInbound(request2);


        final HttpResponse response2 =  ch2.readOutbound();
        assertThat(response2.getStatus(), equalTo(HttpResponseStatus.OK));
        //Read and discard prelude
        ch2.readOutbound();


        final DefaultHttpContent closeResponse2 = ch2.readOutbound();
        assertThat(closeResponse2.content().toString(UTF_8), equalTo("c[2010,\"Another connection still open\"]\n"));


        assertThat(ch2.isActive(), is(false));
        ch.close();


        final EmbeddedChannel ch3 = channelForService(echoFactory);
        removeLastInboundMessageHandlers(ch3);
        final FullHttpRequest request3 = httpRequest(sessionUrl + Transports.Type.XHR_STREAMING.path(), POST);
        ch3.writeInbound(request3);


        final HttpResponse response3 =  ch3.readOutbound();
        assertThat(response3.getStatus(), equalTo(HttpResponseStatus.OK));
        //Read and discard prelude
        ch3.readOutbound();


        final DefaultHttpContent closeResponse3 = ch3.readOutbound();
        assertThat(closeResponse3.content().toString(UTF_8), equalTo("c[1002,\"Connection interrupted\"]\n"));


        assertThat(ch3.isActive(), is(false));
        ch.close();
    }

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