Http超时时间之SocketTimeout

/**

* Sets the read timeout to a specified timeout, in

* milliseconds. A non-zero value specifies the timeout when

* reading from Input stream when a connection is established to a * resource. If the timeout expires before there is data available * for read, a java.net.SocketTimeoutException is raised. A * timeout of zero is interpreted as an infinite timeout. *

*

Some non-standard implementation of this method ignores the * specified timeout. To see the read timeout set, please call * getReadTimeout(). *

* @param timeout an {@code int} that specifies the timeout * value to be used in milliseconds

* @throws IllegalArgumentException if the timeout parameter is negative *

* @see #getReadTimeout() * @see InputStream#read() * @since 1.5 */

public void setReadTimeout(int timeout) { if (timeout < 0) {

throw new IllegalArgumentException(\"timeout can not be negative\"); }

readTimeout = timeout; }

/**

* Defines the socket timeout ({@code SO_TIMEOUT}) in milliseconds, * which is the timeout for waiting for data or, put differently,

* a maximum period inactivity between two consecutive data packets). *

* A timeout value of zero is interpreted as an infinite timeout. * A negative value is interpreted as undefined (system default). *

* Default: {@code -1} *

public int getSocketTimeout() { return socketTimeout; }

1. connectTimeOut：指建⽴连接的超时时间，⽐较容易理解

2. connectionRequestTimeOut：指从连接池获取到连接的超时时间，如果是⾮连接池的话，该参数暂时没有发现有什么⽤处3. socketTimeOut：指客户端和服务进⾏数据交互的时间，是指两者之间如果两个数据包之间的时间⼤于该时间则认为超时，⽽不是整个交互的整体时间，⽐如如果设置1秒超时，如果每隔0.8秒传输⼀次数据，传输10次，总共8秒，这样是不超时的。⽽如果任意两个数据包之间的时间超过了1秒，则超时。

线上问题：设置sockettimeout 15秒，但是实际到达156秒，线程数陡增，导致机器崩溃，具体原因有待抓包分析1.RequestConfig 的配置2.sockettimeout