Examples of org.apache.http.nio.protocol.ThrottlingHttpClientHandler

org.apache.http.nio.protocol.ThrottlingHttpClientHandler
Client protocol handler implementation that provide compatibility with the blocking I/O by utilizing shared content buffers and a fairly small pool of worker threads. The throttling protocol handler allocates input / output buffers of a constant length upon initialization and controls the rate of I/O events in order to ensure those content buffers do not ever get overflown. This helps ensure nearly constant memory footprint for HTTP connections and avoid the out of memory condition while streaming content in and out. The {@link HttpRequestExecutionHandler#handleResponse(HttpResponse,HttpContext)}method will fire immediately when a message is received. The protocol handler delegate the task of processing requests and generating response content to an {@link Executor}, which is expected to perform those tasks using dedicated worker threads in order to avoid blocking the I/O thread.
Usually throttling protocol handlers need only a modest number of worker threads, much fewer than the number of concurrent connections. If the length of the message is smaller or about the size of the shared content buffer worker thread will just store content in the buffer and terminate almost immediately without blocking. The I/O dispatch thread in its turn will take care of sending out the buffered content asynchronously. The worker thread will have to block only when processing large messages and the shared buffer fills up. It is generally advisable to allocate shared buffers of a size of an average content body for optimal performance.
The following parameters can be used to customize the behavior of this class:
- {@link org.apache.http.nio.params.NIOReactorPNames#CONTENT_BUFFER_SIZE}
- {@link org.apache.http.params.CoreProtocolPNames#WAIT_FOR_CONTINUE}
@since 4.0 @deprecated use {@link HttpAsyncClientProtocolHandler} and {@link HttpAsyncRequestExecutor}

        serviceHandler.setHandlerResolver(
                new SimpleHttpRequestHandlerResolver(requestHandler));
        serviceHandler.setEventListener(
                new SimpleEventListener());


        ThrottlingHttpClientHandler clientHandler = new ThrottlingHttpClientHandler(
                this.clientHttpProc,
                requestExecutionHandler,
                new DefaultConnectionReuseStrategy(),
                this.execService,
                this.clientParams);


        clientHandler.setEventListener(
                new SimpleEventListener());


        this.server.start(serviceHandler);
        this.client.start(clientHandler);

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                new RequestTargetHost(),
                new RequestConnControl(),
                new RequestUserAgent(),
                new RequestExpectContinue()});


        ThrottlingHttpClientHandler clientHandler = new ThrottlingHttpClientHandler(
                clientHttpProc,
                requestExecutionHandler,
                new DefaultConnectionReuseStrategy(),
                this.execService,
                this.clientParams);


        clientHandler.setEventListener(
                new SimpleEventListener());


        this.server.start(serviceHandler);
        this.client.start(clientHandler);

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                new RequestTargetHost(),
                new RequestConnControl(),
                new RequestUserAgent(),
                new RequestExpectContinue()});


        ThrottlingHttpClientHandler clientHandler = new ThrottlingHttpClientHandler(
                clientHttpProc,
                requestExecutionHandler,
                new DefaultConnectionReuseStrategy(),
                this.execService,
                this.clientParams);


        clientHandler.setEventListener(new SimpleEventListener());


        this.server.start(serviceHandler);
        this.client.start(clientHandler);


        ListenerEndpoint endpoint = this.server.getListenerEndpoint();

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                new RequestTargetHost(),
                new RequestConnControl(),
                new RequestUserAgent(),
                new RequestExpectContinue()});


        ThrottlingHttpClientHandler clientHandler = new ThrottlingHttpClientHandler(
                clientHttpProc,
                requestExecutionHandler,
                new DefaultConnectionReuseStrategy(),
                this.execService,
                this.clientParams);


        clientHandler.setEventListener(
                new SimpleEventListener());


        this.server.start(serviceHandler);
        this.client.start(clientHandler);

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                new RequestTargetHost(),
                new RequestConnControl(),
                new RequestUserAgent(),
                new RequestExpectContinue()});


        ThrottlingHttpClientHandler clientHandler = new ThrottlingHttpClientHandler(
                clientHttpProc,
                requestExecutionHandler,
                new DefaultConnectionReuseStrategy(),
                this.execService,
                this.clientParams);


        clientHandler.setEventListener(
                new SimpleEventListener());


        this.server.start(serviceHandler);
        this.client.start(clientHandler);

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org.apache.http.nio.entity.ContentOutputStream

org.apache.http.nio.integration.TestThrottlingNHttpHandlers

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