网络程序设计--UDP通信(服务器)
[cpp]
//////////////////////////////////////////////////////////
// UDPServer.cpp文件
#include "../common/InitSock.h"
#include <stdio.h>
CInitSock initSock; // 初始化Winsock库
int main()
{
// 创建套节字
SOCKET s = ::socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(s == INVALID_SOCKET)
{
printf("Failed socket() \n");
return 0;
}
// 填充sockaddr_in结构
sockaddr_in sin;
sin.sin_family = AF_INET;
sin.sin_port = htons(4567);
sin.sin_addr.S_un.S_addr = INADDR_ANY;
// 绑定这个套节字到一个本地地址
if(::bind(s, (LPSOCKADDR)&sin, sizeof(sin)) == SOCKET_ERROR)
{
printf("Failed bind() \n");
return 0;
}
// 接收数据
char buff[1024];
sockaddr_in addr;
int nLen = sizeof(addr);
while(TRUE)
{
int nRecv = ::recvfrom(s, buff, 1024, 0, (sockaddr*)&addr, &nLen);
if(nRecv > 0)
{
buff[nRecv] = '\0';
printf(" 接收到数据(%s):%s", ::inet_ntoa(addr.sin_addr), buff);
}
}
::closesocket(s);
}
补充:软件开发 , C++ ,