@Override public void process(final HttpRequest request, final HttpContext context) throws HttpException, IOException { Args.notNull(request, "HTTP request"); final String method = request.getRequestLine().getMethod(); if (method.equalsIgnoreCase("CONNECT")) { request.setHeader(PROXY_CONN_DIRECTIVE, HTTP.CONN_KEEP_ALIVE); return; } final HttpClientContext clientContext = HttpClientContext.adapt(context); // Obtain the client connection (required) final RouteInfo route = clientContext.getHttpRoute(); if (route == null) { this.log.debug("Connection route not set in the context"); return; } if (route.getHopCount() == 1 || route.isTunnelled()) { if (!request.containsHeader(HTTP.CONN_DIRECTIVE)) { request.addHeader(HTTP.CONN_DIRECTIVE, HTTP.CONN_KEEP_ALIVE); } } if (route.getHopCount() == 2 && !route.isTunnelled()) { if (!request.containsHeader(PROXY_CONN_DIRECTIVE)) { request.addHeader(PROXY_CONN_DIRECTIVE, HTTP.CONN_KEEP_ALIVE); } } }
@Override public void process(final HttpRequest request, final HttpContext context) throws HttpException, IOException { final HttpClientContext clientContext = HttpClientContext.adapt(context); final RequestConfig requestConfig = clientContext.getRequestConfig(); /* Signal support for Accept-Encoding transfer encodings. */ if (!request.containsHeader("Accept-Encoding") && requestConfig.isContentCompressionEnabled()) { request.addHeader("Accept-Encoding", acceptEncoding); } }
@Override public void process(final HttpRequest request, final HttpContext context) throws HttpException, IOException { Args.notNull(request, "HTTP request"); if (!request.containsHeader(HTTP.EXPECT_DIRECTIVE)) { if (request instanceof HttpEntityEnclosingRequest) { final ProtocolVersion ver = request.getRequestLine().getProtocolVersion(); final HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity(); // Do not send the expect header if request body is known to be empty if (entity != null && entity.getContentLength() != 0 && !ver.lessEquals(HttpVersion.HTTP_1_0)) { final HttpClientContext clientContext = HttpClientContext.adapt(context); final RequestConfig config = clientContext.getRequestConfig(); if (config.isExpectContinueEnabled()) { request.addHeader(HTTP.EXPECT_DIRECTIVE, HTTP.EXPECT_CONTINUE); } } } } }
public void request2(String uri, int reqNum, int reqTerm) throws Exception { HttpClientContext context = HttpClientContext.create(); HttpClientConnectionManager connManager = new BasicHttpClientConnectionManager(); HttpRoute route = new HttpRoute(new HttpHost(uri, 80)); // Request new connection. This can be a long process if (reqNum == 0) { System.out.println( String.format("request to %s infinite times with term '%d' ms", uri, reqTerm)); } else { System.out.println( String.format("request to %s '%d' times with term '%d' ms", uri, reqNum, reqTerm)); } int i = 0, tick = 0; while (true) { usleep(reqTerm); tick = (int) (Math.random() * 10) % 2; if (tick == 0) { continue; } System.out.println("111111111"); ConnectionRequest connRequest = connManager.requestConnection(route, null); // Wait for connection up to 10 sec HttpClientConnection conn = connRequest.get(10, TimeUnit.SECONDS); System.out.println("222222222"); try { if (!conn.isOpen()) // If not open { System.out.println("333333333"); // establish connection based on its route info connManager.connect(conn, route, 1000, context); // and mark it as route complete connManager.routeComplete(conn, route, context); } // Do useful things with the connection. System.out.println("request " + uri); System.out.println( "--> response status = " + conn.receiveResponseHeader().getStatusLine()); } finally { connManager.releaseConnection(conn, null, 1, TimeUnit.MINUTES); } System.out.println("----------------------------------------"); if (reqNum != 0 && reqNum < ++i) { break; } } }