标签:style class blog c code java
connectionTimeout与soTimeout的差异,前者指创建一个有效的客户端到服务端链接的最大允许时间,后者指socket接收data的时间。
connectionManager.getParams().setConnectionTimeout(50);
connectionManager.getParams().setSoTimeout(100);
调用connectionTimeout属性的代码:
//org.apache.commons.httpclient.protocol.ControllerThreadSocketFactory public static Socket createSocket(final SocketTask task, int timeout) throws IOException, UnknownHostException, ConnectTimeoutException{ try { TimeoutController.execute(task, timeout); } catch (TimeoutController.TimeoutException e) { throw new ConnectTimeoutException( "The host did not accept the connection within timeout of " + timeout + " ms"); } Socket socket = task.getSocket(); if (task.exception != null) { throw task.exception; } return socket; }
//org.apache.commons.httpclient.util.TimeoutController public static void execute(Thread task, long timeout) throws TimeoutException { task.start(); try { task.join(timeout); } catch (InterruptedException e) { /* if somebody interrupts us he knows what he is doing */ } if (task.isAlive()) { task.interrupt(); throw new TimeoutException(); } }
调用soTimeout属性的代码:
socket.setSoTimeout(this.params.getSoTimeout());
* HttpClient.executeMethod(method) 主要代码逻辑:
1 public int executeMethod(HostConfiguration hostconfig, 2 final HttpMethod method, final HttpState state) 3 throws IOException, HttpException { 4 5 LOG.trace("enter HttpClient.executeMethod(HostConfiguration,HttpMethod,HttpState)"); 6 7 if (method == null) { 8 throw new IllegalArgumentException("HttpMethod parameter may not be null"); 9 } 10 HostConfiguration defaulthostconfig = getHostConfiguration(); 11 if (hostconfig == null) { 12 hostconfig = defaulthostconfig; 13 } 14 URI uri = method.getURI(); 15 if (hostconfig == defaulthostconfig || uri.isAbsoluteURI()) { 16 // make a deep copy of the host defaults 17 hostconfig = (HostConfiguration) hostconfig.clone(); 18 if (uri.isAbsoluteURI()) { 19 hostconfig.setHost(uri); 20 } 21 } 22 23 HttpMethodDirector methodDirector = new HttpMethodDirector( 24 getHttpConnectionManager(), 25 hostconfig, 26 this.params, 27 (state == null ? getState() : state)); 28 methodDirector.executeMethod(method); 29 return method.getStatusCode(); 30 } 31 32 //------------------------------ 33 34 /** 35 * Executes the method associated with this method director. 36 * 37 * @throws IOException 38 * @throws HttpException 39 */ 40 public void executeMethod(final HttpMethod method) throws IOException, HttpException { 41 //... 42 try { 43 int maxRedirects = this.params.getIntParameter(HttpClientParams.MAX_REDIRECTS, 100); 44 45 for (int redirectCount = 0;;) { 46 47 // make sure the connection we have is appropriate 48 if (this.conn != null && !hostConfiguration.hostEquals(this.conn)) { 49 this.conn.setLocked(false); 50 this.conn.releaseConnection(); 51 this.conn = null; 52 } 53 54 // get a connection, if we need one 55 if (this.conn == null) { 56 this.conn = connectionManager.getConnectionWithTimeout( 57 hostConfiguration, 58 this.params.getConnectionManagerTimeout() 59 ); 60 this.conn.setLocked(true); 61 if (this.params.isAuthenticationPreemptive() 62 || this.state.isAuthenticationPreemptive()) 63 { 64 LOG.debug("Preemptively sending default basic credentials"); 65 method.getHostAuthState().setPreemptive(); 66 method.getHostAuthState().setAuthAttempted(true); 67 if (this.conn.isProxied() && !this.conn.isSecure()) { 68 method.getProxyAuthState().setPreemptive(); 69 method.getProxyAuthState().setAuthAttempted(true); 70 } 71 } 72 } 73 } finally { 74 if (this.conn != null) { 75 this.conn.setLocked(false); 76 } 77 // If the response has been fully processed, return the connection 78 // to the pool. Use this flag, rather than other tests (like 79 // responseStream == null), as subclasses, might reset the stream, 80 // for example, reading the entire response into a file and then 81 // setting the file as the stream. 82 if ( 83 (releaseConnection || method.getResponseBodyAsStream() == null) 84 && this.conn != null 85 ) { 86 this.conn.releaseConnection(); 87 } 88 } 89 90 } 91 92 //-------------------------- this.conn = connectionManager.getConnectionWithTimeout 93 94 public HttpConnection getConnectionWithTimeout(HostConfiguration hostConfiguration, 95 long timeout) throws ConnectionPoolTimeoutException { 96 //... 97 final HttpConnection conn = doGetConnection(hostConfiguration, timeout); 98 99 // wrap the connection in an adapter so we can ensure it is used 100 // only once 101 return new HttpConnectionAdapter(conn); 102 }
commons-httpclient中的超时设置,布布扣,bubuko.com
标签:style class blog c code java
原文地址:http://www.cnblogs.com/tao_/p/3737455.html