php的udp数据传输 python实现udp数据报传输的方法

waiting on port: 8081

reciveed: hello world from ('127.0.0.1', 62644)

补充：

socket.sendto(string[, flags], address)

官方文档如下：

Send data to the socket. The socket should not be connected to a remote socket, since the destination socket is specified by address. The optional flags argument has the same meaning as for recv() above. Return the number of bytes sent. (The format of address depends on the address family — see above.)address参数在协议类型为socket.SOCK_DGRAM时，address的结构为一个元组，(host,port)的格式

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