java - Socket setSoTimeout 说明

Question

我有一个场景，其中有服务器监听指定的 ip 和端口以及连接到该服务器的客户端。现在我正在使用 readline 方法从服务器读取响应:

String readme=bs.readline()).   

这里的bs是bufferedreader对象。我想知道在阅读回复之前是否写了这一行

socket.setSoTimeout(1000)

如果直到 1000 毫秒都没有响应

无论套接字超时并断开连接还是不断开套接字并在自述文件中给出空字符串。

Answer 1

其实都不是。抛出 SocketTimeoutException。

来自docs :

setSoTimeout

public void setSoTimeout(int timeout)
                  throws SocketException

Enable/disable SO_TIMEOUT with the specified timeout, in milliseconds. With this option set to a non-zero timeout, a read() call on the InputStream associated with this Socket will block for only this amount of time. If the timeout expires, a java.net.SocketTimeoutException is raised, though the Socket is still valid. The option must be enabled prior to entering the blocking operation to have effect. The timeout must be > 0. A timeout of zero is interpreted as an infinite timeout.

Parameters: timeout - the specified timeout, in milliseconds. Throws: SocketException - if there is an error in the underlying protocol, such as a TCP error.