java - 设置套接字操作的超时

Question

当我创建一个套接字时:

Socket socket = new Socket(ipAddress, port);

它抛出一个异常，这没关系，因为IP地址不可用。 (测试变量 where String ipAddress = "192.168.0.3" and int port = 300。)

问题是:如何将其设置为该套接字的超时？

当我创建套接字时，如何减少获得 UnknownHostException 并使套接字超时的时间？

Answer 1

使用 Socket() constructor , 和 connect(SocketAddress endpoint, int timeout) method而是。

在你的情况下，它看起来像:

Socket socket = new Socket();
socket.connect(new InetSocketAddress(ipAddress, port), 1000);

---

引用文档

connect

public void connect(SocketAddress endpoint, int timeout) throws IOException

Connects this socket to the server with a specified timeout value. A timeout of zero is interpreted as an infinite timeout. The connection will then block until established or an error occurs.

Parameters:

endpoint - the SocketAddress
timeout - the timeout value to be used in milliseconds.

Throws:

IOException - if an error occurs during the connection
SocketTimeoutException - if timeout expires before connecting
IllegalBlockingModeException - if this socket has an associated channel, and the channel is in non-blocking mode
IllegalArgumentException - if endpoint is null or is a SocketAddress subclass not supported by this socket

Since: 1.4