Android 关于java.net.BindException: bind failed: EADDRINUSE (Address already in use)

java.net.BindException: bind failed: EADDRINUSE (Address already in use)

[E/NMPWIFI ( 1189): java.net.BindException: bind failed: EADDRINUSE (Address already in use)W/System.err( 1189): java.net.BindException: bind failed: EADDRINUSE

最近项目使用UDP通信，遇到了绑定异常的情况：udp端口调用close 后不及时释放的问题 ，（原因是多次new  udpsocket  第一个虽然调用close 但是系统不及时关闭，有延迟 ，在第二次new 的时候就会报端口被占用的错误

if (datagramSocket ==null) {

    datagramSocket =new DatagramSocket(port);

    DatagramPacket datagramPacket =new DatagramPacket(message, message.length);

    datagramSocket.setSoTimeout(165000);

    datagramSocket.receive(datagramPacket);

}