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36 //将地址结构绑定到套接字上./ 37 ret=bind(sock,(struct sockaddr*)&server_addr,sizeof(server_addr)); 38 if(ret<0){ 39 perror("bind error"); 40 return; 41 } 42 43 while(1){ 44 timeout.tv_sec=2; 45 timeout.tv_usec=0; 46 //文件描述符集合清0 47 FD_ZERO(&readfd); 48...
2.UDP服务器为本机上配置的每个IP地址都创建一个套接字,用bind函数绑定每个IP地址到各自的套接字,然后在所有套接字上使用select函数,等待其中任何一个变为可读,再从可读的套接字上给出应答,这就保证了应答的源地址与请求的目的地址相同。 在多宿Solaris系统上,服务器应答的源IP地址就是客户请求的目的IP地址,以...
=filenum-1:#如果操作码不是4或者 ack确认号不等于文件序号减158exit()#程序退出59filehander.close()#文件关闭60socket_down.close()#关闭socket6162defmain():63sockets=socket(AF_INET,SOCK_DGRAM)64sockets.bind(('',69))65while1:66recv_data,(user_ip,user_port)=sockets.recvfrom(1024)# 第一次客...
"99send_msg(data)100101defsend_msg(data):102 client_address = ('127.0.0.1', 8000)#定义了本机的ip and port103 server_address = ('127.0.0.1', 70)#定义了接收消息机器的ip and port104 udp_sockets = socket(AF_INET, SOCK_DGRAM)#建立udp socker连接105 udp_sockets.bind(client_address)#服务...
bind(InternetAddress.anyIPv4,0); _udpSocket!.listen((RawSocketEvent rawSocketEvent) { if (rawSocketEvent == RawSocketEvent.read) { Datagram? datagram = _udpSocket!.receive(); if (datagram != null) { print("received " + datagram.data.toString()); } } }); Timer.periodic(Duration(...
socket.AF_INET：IPV4 6 # - socket.STREAM：TCP 7 # - socket.DGRAM：UDP 8 9 s.bind...
proxy http -t tcp -p 2.2.2.2:33080 --bind-listenFlexible Outgoing IPAlthough the above --bind-listen parameter can specify the outgoing IP, the entry IP and the outgoing IP cannot be referenced artificially. If you want the ingress IP and the egress IP to be different, you can use the...
如何利用STM32F103ZET6+ENC28J60+LWIP实现UDP组播? _bind(udp_server_pcb,IP_ADDR_ANY,9999);//组播端口udp_recv(udp_server_pcb,udp_demo_recv,NULL);//接收回调函数 }}6.添加组播发送函数void czxmla 2019-09-24 04:36:33 为什么我接收不到GPRS UDP协议发的数据? 模块发送指令,网络调试助手接收不到...
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