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.

    private static void webSocketTestTransport(final WebSocketVersion version) {
        final String serviceName = "/echo";
        final String sessionUrl = serviceName + "/222/" + UUID.randomUUID().toString();
        final SockJsConfig config = SockJsConfig.withPrefix(serviceName).build();
        final SockJsServiceFactory service = echoService(config);
        final EmbeddedChannel ch = wsChannelForService(service);


        final FullHttpRequest request = webSocketUpgradeRequest(sessionUrl + "/websocket", version);
        ch.writeInbound(request);
        // Discard the HTTP Response (this will be a ByteBuf and not an object
        // as we have a HttpEncoder is in the pipeline to start with.
        ch.readOutbound();


        final TextWebSocketFrame openFrame = (TextWebSocketFrame) readOutboundDiscardEmpty(ch);
        assertThat(openFrame.content().toString(UTF_8), equalTo("o"));
        ch.readOutbound();


        final TextWebSocketFrame textWebSocketFrame = new TextWebSocketFrame("\"a\"");
        ch.writeInbound(textWebSocketFrame);


        final TextWebSocketFrame textFrame = ch.readOutbound();
        assertThat(textFrame.content().toString(UTF_8), equalTo("a[\"a\"]"));
    }

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    private static void webSocketTestClose(final WebSocketVersion version) {
        final String serviceName = "/close";
        final String sessionUrl = serviceName + "/222/" + UUID.randomUUID().toString();
        final SockJsConfig config = SockJsConfig.withPrefix(serviceName).build();
        final SockJsServiceFactory service = closeService(config);
        final EmbeddedChannel ch = wsChannelForService(service);


        final FullHttpRequest request = webSocketUpgradeRequest(sessionUrl + "/websocket", version.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();


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


        final TextWebSocketFrame closeFrame = ch.readOutbound();
        assertThat(closeFrame.content().toString(UTF_8), equalTo("c[3000,\"Go away!\"]"));
        assertThat(ch.isActive(), is(false));
    }

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    private static void webSocketTestBrokenJSON(final WebSocketVersion version) {
        final String serviceName = "/close";
        final String sessionUrl = serviceName + "/222/" + UUID.randomUUID().toString();
        final SockJsConfig config = SockJsConfig.withPrefix(serviceName).build();
        final EmbeddedChannel ch = wsChannelForService(echoService(config));


        final FullHttpRequest request = webSocketUpgradeRequest(sessionUrl + "/websocket", version.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(((ByteBufHolder) readOutboundDiscardEmpty(ch)).content().toString(UTF_8), equalTo("o"));


        final TextWebSocketFrame webSocketFrame = new TextWebSocketFrame("[\"a\"");
        ch.writeInbound(webSocketFrame);
        assertThat(ch.isActive(), is(false));
    }

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        assertThat(response.content().toString(UTF_8), equalTo("Payload expected."));
    }


    private static FullHttpResponse jsonpRequest(final String url, final SockJsServiceFactory service) {
        final FullHttpRequest request = httpRequest(url, GET);
        final EmbeddedChannel ch = jsonpChannelForService(service);
        removeLastInboundMessageHandlers(ch);
        ch.writeInbound(request);
        final FullHttpResponse response = ch.readOutbound();
        ch.finish();
        return response;
    }

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        ch.finish();
        return response;
    }


    private static FullHttpResponse jsonpSend(final FullHttpRequest request, final SockJsServiceFactory service) {
        final EmbeddedChannel ch = jsonpChannelForService(service);
        removeLastInboundMessageHandlers(ch);
        ch.writeInbound(request);
        Object out;
        try {
            while ((out = ch.readOutbound()) != null) {
                if (out instanceof FullHttpResponse) {
                    return (FullHttpResponse) out;
                }
            }
        } finally {
            ch.finish();
        }
        throw new IllegalStateException("No outbound FullHttpResponse was written");
    }

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        return jsonpSend(request, service);
    }


    private static FullHttpResponse xhrSendRequest(final String path, final String content,
                                                   final SockJsServiceFactory service) {
        final EmbeddedChannel ch = channelForService(service);
        removeLastInboundMessageHandlers(ch);
        final FullHttpRequest sendRequest = httpRequest(path + "/xhr_send", POST);
        final ByteBuf byteBuf = Unpooled.copiedBuffer(content, UTF_8);
        sendRequest.content().writeBytes(byteBuf);
        byteBuf.release();
        ch.writeInbound(sendRequest);
        final FullHttpResponse response = ch.readOutbound();
        ch.finish();
        return response;
    }

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    private static FullHttpResponse xhrSendRequest(final String path,
                                                   final String content,
                                                   final String contentType,
                                                   final SockJsServiceFactory service) {
        final EmbeddedChannel ch = channelForService(service);
        removeLastInboundMessageHandlers(ch);
        final FullHttpRequest request = httpRequest(path + Transports.Type.XHR_SEND.path(), POST);
        request.headers().set(CONTENT_TYPE, contentType);
        final ByteBuf byteBuf = Unpooled.copiedBuffer(content, UTF_8);
        request.content().writeBytes(byteBuf);
        byteBuf.release();
        ch.writeInbound(request);
        Object out;
        try {
            while ((out = ch.readOutbound()) != null) {
                if (out instanceof FullHttpResponse) {
                    return (FullHttpResponse) out;
                }
            }
        } finally {
            ch.finish();
        }
        throw new IllegalStateException("No outbound FullHttpResponse was written");
    }

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        }
        throw new IllegalStateException("No outbound FullHttpResponse was written");
    }


    private static FullHttpResponse xhrRequest(final String url, final SockJsServiceFactory service) {
        final EmbeddedChannel ch = channelForService(service);
        removeLastInboundMessageHandlers(ch);
        final FullHttpRequest request = httpRequest(url + Transports.Type.XHR.path(), GET);
        ch.writeInbound(request);
        final FullHttpResponse response = ch.readOutbound();
        ch.finish();
        return response;
    }

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        ch.finish();
        return response;
    }


    private static FullHttpResponse infoRequest(final String url, final SockJsServiceFactory service) {
        final EmbeddedChannel ch = channelForService(service);
        final FullHttpRequest request = httpRequest(url + "/info", GET);
        ch.writeInbound(request);
        final FullHttpResponse response = ch.readOutbound();
        ch.finish();
        return response;
    }

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        ch.finish();
        return response;
    }


    private static HttpResponse xhrRequest(final FullHttpRequest request, final SockJsServiceFactory service) {
        final EmbeddedChannel ch = channelForService(service);
        removeLastInboundMessageHandlers(ch);
        ch.writeInbound(request);
        final HttpResponse response = ch.readOutbound();
        ch.finish();
        return response;
    }

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