List of usage examples for org.apache.http.client.protocol ClientContext ROUTE
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From source file:org.apache.http.impl.client.DefaultRequestDirector.java
public HttpResponse execute(final HttpHost targetHost, final HttpRequest request, final HttpContext context) throws HttpException, IOException { context.setAttribute(ClientContext.TARGET_AUTH_STATE, targetAuthState); context.setAttribute(ClientContext.PROXY_AUTH_STATE, proxyAuthState); HttpHost target = targetHost;// w w w.j a v a2s . co m final HttpRequest orig = request; final RequestWrapper origWrapper = wrapRequest(orig); origWrapper.setParams(params); final HttpRoute origRoute = determineRoute(target, origWrapper, context); virtualHost = (HttpHost) origWrapper.getParams().getParameter(ClientPNames.VIRTUAL_HOST); // HTTPCLIENT-1092 - add the port if necessary if (virtualHost != null && virtualHost.getPort() == -1) { final HttpHost host = (target != null) ? target : origRoute.getTargetHost(); final int port = host.getPort(); if (port != -1) { virtualHost = new HttpHost(virtualHost.getHostName(), port, virtualHost.getSchemeName()); } } RoutedRequest roureq = new RoutedRequest(origWrapper, origRoute); boolean reuse = false; boolean done = false; try { HttpResponse response = null; while (!done) { // In this loop, the RoutedRequest may be replaced by a // followup request and route. The request and route passed // in the method arguments will be replaced. The original // request is still available in 'orig'. final RequestWrapper wrapper = roureq.getRequest(); final HttpRoute route = roureq.getRoute(); response = null; // See if we have a user token bound to the execution context Object userToken = context.getAttribute(ClientContext.USER_TOKEN); // Allocate connection if needed if (managedConn == null) { final ClientConnectionRequest connRequest = connManager.requestConnection(route, userToken); if (orig instanceof AbortableHttpRequest) { ((AbortableHttpRequest) orig).setConnectionRequest(connRequest); } final long timeout = HttpClientParams.getConnectionManagerTimeout(params); try { managedConn = connRequest.getConnection(timeout, TimeUnit.MILLISECONDS); } catch (final InterruptedException interrupted) { Thread.currentThread().interrupt(); throw new InterruptedIOException(); } if (HttpConnectionParams.isStaleCheckingEnabled(params)) { // validate connection if (managedConn.isOpen()) { this.log.debug("Stale connection check"); if (managedConn.isStale()) { this.log.debug("Stale connection detected"); managedConn.close(); } } } } if (orig instanceof AbortableHttpRequest) { ((AbortableHttpRequest) orig).setReleaseTrigger(managedConn); } try { tryConnect(roureq, context); } catch (final TunnelRefusedException ex) { if (this.log.isDebugEnabled()) { this.log.debug(ex.getMessage()); } response = ex.getResponse(); break; } final String userinfo = wrapper.getURI().getUserInfo(); if (userinfo != null) { targetAuthState.update(new BasicScheme(), new UsernamePasswordCredentials(userinfo)); } // Get target. Even if there's virtual host, we may need the target to set the port. if (virtualHost != null) { target = virtualHost; } else { final URI requestURI = wrapper.getURI(); if (requestURI.isAbsolute()) { target = URIUtils.extractHost(requestURI); } } if (target == null) { target = route.getTargetHost(); } // Reset headers on the request wrapper wrapper.resetHeaders(); // Re-write request URI if needed rewriteRequestURI(wrapper, route); // Populate the execution context context.setAttribute(ExecutionContext.HTTP_TARGET_HOST, target); context.setAttribute(ClientContext.ROUTE, route); context.setAttribute(ExecutionContext.HTTP_CONNECTION, managedConn); // Run request protocol interceptors requestExec.preProcess(wrapper, httpProcessor, context); response = tryExecute(roureq, context); if (response == null) { // Need to start over continue; } // Run response protocol interceptors response.setParams(params); requestExec.postProcess(response, httpProcessor, context); // The connection is in or can be brought to a re-usable state. reuse = reuseStrategy.keepAlive(response, context); if (reuse) { // Set the idle duration of this connection final long duration = keepAliveStrategy.getKeepAliveDuration(response, context); if (this.log.isDebugEnabled()) { final String s; if (duration > 0) { s = "for " + duration + " " + TimeUnit.MILLISECONDS; } else { s = "indefinitely"; } this.log.debug("Connection can be kept alive " + s); } managedConn.setIdleDuration(duration, TimeUnit.MILLISECONDS); } final RoutedRequest followup = handleResponse(roureq, response, context); if (followup == null) { done = true; } else { if (reuse) { // Make sure the response body is fully consumed, if present final HttpEntity entity = response.getEntity(); EntityUtils.consume(entity); // entity consumed above is not an auto-release entity, // need to mark the connection re-usable explicitly managedConn.markReusable(); } else { managedConn.close(); if (proxyAuthState.getState().compareTo(AuthProtocolState.CHALLENGED) > 0 && proxyAuthState.getAuthScheme() != null && proxyAuthState.getAuthScheme().isConnectionBased()) { this.log.debug("Resetting proxy auth state"); proxyAuthState.reset(); } if (targetAuthState.getState().compareTo(AuthProtocolState.CHALLENGED) > 0 && targetAuthState.getAuthScheme() != null && targetAuthState.getAuthScheme().isConnectionBased()) { this.log.debug("Resetting target auth state"); targetAuthState.reset(); } } // check if we can use the same connection for the followup if (!followup.getRoute().equals(roureq.getRoute())) { releaseConnection(); } roureq = followup; } if (managedConn != null) { if (userToken == null) { userToken = userTokenHandler.getUserToken(context); context.setAttribute(ClientContext.USER_TOKEN, userToken); } if (userToken != null) { managedConn.setState(userToken); } } } // while not done // check for entity, release connection if possible if ((response == null) || (response.getEntity() == null) || !response.getEntity().isStreaming()) { // connection not needed and (assumed to be) in re-usable state if (reuse) { managedConn.markReusable(); } releaseConnection(); } else { // install an auto-release entity HttpEntity entity = response.getEntity(); entity = new BasicManagedEntity(entity, managedConn, reuse); response.setEntity(entity); } return response; } catch (final ConnectionShutdownException ex) { final InterruptedIOException ioex = new InterruptedIOException("Connection has been shut down"); ioex.initCause(ex); throw ioex; } catch (final HttpException ex) { abortConnection(); throw ex; } catch (final IOException ex) { abortConnection(); throw ex; } catch (final RuntimeException ex) { abortConnection(); throw ex; } }
From source file:org.apache.http.impl.client.DefaultRequestDirector.java
/** * Creates a tunnel to the target server. * The connection must be established to the (last) proxy. * A CONNECT request for tunnelling through the proxy will * be created and sent, the response received and checked. * This method does <i>not</i> update the connection with * information about the tunnel, that is left to the caller. * * @param route the route to establish * @param context the context for request execution * * @return {@code true} if the tunnelled route is secure, * {@code false} otherwise./*from w ww . jav a2 s.c o m*/ * The implementation here always returns {@code false}, * but derived classes may override. * * @throws HttpException in case of a problem * @throws IOException in case of an IO problem */ protected boolean createTunnelToTarget(final HttpRoute route, final HttpContext context) throws HttpException, IOException { final HttpHost proxy = route.getProxyHost(); final HttpHost target = route.getTargetHost(); HttpResponse response = null; for (;;) { if (!this.managedConn.isOpen()) { this.managedConn.open(route, context, this.params); } final HttpRequest connect = createConnectRequest(route, context); connect.setParams(this.params); // Populate the execution context context.setAttribute(ExecutionContext.HTTP_TARGET_HOST, target); context.setAttribute(ClientContext.ROUTE, route); context.setAttribute(ExecutionContext.HTTP_PROXY_HOST, proxy); context.setAttribute(ExecutionContext.HTTP_CONNECTION, managedConn); context.setAttribute(ExecutionContext.HTTP_REQUEST, connect); this.requestExec.preProcess(connect, this.httpProcessor, context); response = this.requestExec.execute(connect, this.managedConn, context); response.setParams(this.params); this.requestExec.postProcess(response, this.httpProcessor, context); final int status = response.getStatusLine().getStatusCode(); if (status < 200) { throw new HttpException("Unexpected response to CONNECT request: " + response.getStatusLine()); } if (HttpClientParams.isAuthenticating(this.params)) { if (this.authenticator.isAuthenticationRequested(proxy, response, this.proxyAuthStrategy, this.proxyAuthState, context)) { if (this.authenticator.authenticate(proxy, response, this.proxyAuthStrategy, this.proxyAuthState, context)) { // Retry request if (this.reuseStrategy.keepAlive(response, context)) { this.log.debug("Connection kept alive"); // Consume response content final HttpEntity entity = response.getEntity(); EntityUtils.consume(entity); } else { this.managedConn.close(); } } else { break; } } else { break; } } } final int status = response.getStatusLine().getStatusCode(); if (status > 299) { // Buffer response content final HttpEntity entity = response.getEntity(); if (entity != null) { response.setEntity(new BufferedHttpEntity(entity)); } this.managedConn.close(); throw new TunnelRefusedException("CONNECT refused by proxy: " + response.getStatusLine(), response); } this.managedConn.markReusable(); // How to decide on security of the tunnelled connection? // The socket factory knows only about the segment to the proxy. // Even if that is secure, the hop to the target may be insecure. // Leave it to derived classes, consider insecure by default here. return false; }
From source file:org.apache.http.impl.nio.client.DefaultAsyncRequestDirector.java
@Override public synchronized HttpRequest generateRequest() throws IOException, HttpException { final HttpRoute route = this.mainRequest.getRoute(); if (!this.routeEstablished) { int step; do {//from w ww . j a v a 2 s . c om final HttpRoute fact = this.managedConn.getRoute(); step = this.routeDirector.nextStep(route, fact); switch (step) { case HttpRouteDirector.CONNECT_TARGET: case HttpRouteDirector.CONNECT_PROXY: break; case HttpRouteDirector.TUNNEL_TARGET: if (this.log.isDebugEnabled()) { this.log.debug("[exchange: " + this.id + "] Tunnel required"); } final HttpRequest connect = createConnectRequest(route); this.currentRequest = wrapRequest(connect); this.currentRequest.setParams(this.params); break; case HttpRouteDirector.TUNNEL_PROXY: throw new HttpException("Proxy chains are not supported"); case HttpRouteDirector.LAYER_PROTOCOL: managedConn.layerProtocol(this.localContext, this.params); break; case HttpRouteDirector.UNREACHABLE: throw new HttpException( "Unable to establish route: " + "planned = " + route + "; current = " + fact); case HttpRouteDirector.COMPLETE: this.routeEstablished = true; break; default: throw new IllegalStateException("Unknown step indicator " + step + " from RouteDirector."); } } while (step > HttpRouteDirector.COMPLETE && this.currentRequest == null); } HttpHost target = (HttpHost) this.params.getParameter(ClientPNames.VIRTUAL_HOST); if (target == null) { target = route.getTargetHost(); } final HttpHost proxy = route.getProxyHost(); this.localContext.setAttribute(ExecutionContext.HTTP_TARGET_HOST, target); this.localContext.setAttribute(ExecutionContext.HTTP_PROXY_HOST, proxy); this.localContext.setAttribute(ExecutionContext.HTTP_CONNECTION, this.managedConn); this.localContext.setAttribute(ClientContext.ROUTE, route); if (this.currentRequest == null) { this.currentRequest = this.mainRequest.getRequest(); final String userinfo = this.currentRequest.getURI().getUserInfo(); if (userinfo != null) { this.targetAuthState.update(new BasicScheme(), new UsernamePasswordCredentials(userinfo)); } // Re-write request URI if needed rewriteRequestURI(this.currentRequest, route); } // Reset headers on the request wrapper this.currentRequest.resetHeaders(); this.currentRequest.incrementExecCount(); if (this.currentRequest.getExecCount() > 1 && !this.requestProducer.isRepeatable() && this.requestContentProduced) { throw new NonRepeatableRequestException( "Cannot retry request " + "with a non-repeatable request entity."); } this.execCount++; if (this.log.isDebugEnabled()) { this.log.debug("[exchange: " + this.id + "] Attempt " + this.execCount + " to execute request"); } return this.currentRequest; }