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  • 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.
         *
         *<p> 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).
         * <p>
         * A timeout value of zero is interpreted as an infinite timeout.
         * A negative value is interpreted as undefined (system default).
         * </p>
         * <p>
         * Default: {@code -1}
         * </p>
         */
        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

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  • 原文地址:https://www.cnblogs.com/number7/p/9514040.html
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