HttpClient connectionRequestTimeout、connectTimeout、socketTimeout-优快云博客

本文链接：https://blog.youkuaiyun.com/abcdu1/article/details/127247107

本文详细解释了HttpClient中connectionRequestTimeout、connectTimeout及socketTimeout三个超时参数的区别与使用方法。通过实例展示了如何设置这些参数，并提供了源码链接进一步帮助理解。

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1.比较

2.使用

3.参考

1.比较

HttpClient connectionRequestTimeout、connectTimeout、socketTimeout 三个参数对比：

connectionRequestTimeout	Returns the timeout in milliseconds used when requesting a connection from the connection manager.
connectTimeout	Determines the timeout in milliseconds until a connection is established
socketTimeout	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.

connectionRequestTimeout：等待从连接管理器、连接池获取连接的时间。HttpClient维护一个连接池来管理连接，类似于数据库连接池)，单位毫秒

connectTimeout：与远程主机、服务器建立连接的最长时间，单位毫秒

socketTimeout：当数据从服务器传输到客户端时，两个连续数据包之间的最大时间间隔，单位毫秒

/**
* Returns the timeout in milliseconds used when requesting a connection
* from the connection manager.
* 
* A timeout value of zero is interpreted as an infinite timeout.
* A negative value is interpreted as undefined (system default if applicable).
* 
* 
* Default: {@code -1}
* 
*/
public int getConnectionRequestTimeout() {
return connectionRequestTimeout;
}

/**
* Determines the timeout in milliseconds until a connection is established.
* 
* A timeout value of zero is interpreted as an infinite timeout.
* A negative value is interpreted as undefined (system default if applicable).
* 
* 
* Default: {@code -1}
* 
*/
public int getConnectTimeout() {
return connectTimeout;
}

/**
* 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 if applicable).
* 
* 
* Default: {@code -1}
* 
*/
public int getSocketTimeout() {
return socketTimeout;
}

2.使用

 HttpPost httpPost = new HttpPost("URL");

RequestConfig requestConfig =RequestConfig.custom()
.setConnectTimeout(connectTimeout)
.setConnectionRequestTimeout(connectionRequestTimeout)
.setSocketTimeout(socketTimeout).build();

httpPost.setConfig(config);