socket网络通讯

最新推荐文章于 2021-05-18 04:32:03 发布

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最新推荐文章于 2021-05-18 04:32:03 发布

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分类专栏： unix网络编程

本文链接：https://blog.youkuaiyun.com/hengju/article/details/78215442

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该博客介绍了如何使用C++编程实现一个简单的Socket服务器，包括创建套接字、绑定本地地址、监听连接请求和接收客户端连接的过程。通过示例代码展示了如何在Windows环境下设置服务器端口和IP，并处理客户端的连接请求。

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server.cpp
#include<windows.h>
#include<stdio.h>
#include<winsock.h>

#define SERVER_PORT 9999
#define SERVER_IP "127.0.0.1"
int main(int argc,char *argv[])
{
SOCKET serSocket,cliSocket;
struct sockaddr_in localAddr,clientAddr;
WSADATA Ws;
int Bit;
int Lit;
char recvBuf[1024];
int recvR,sen;
int cliLen;
fd_set rfds;//
struct timeval time;//
int maxrd=0;//
int ret;//

if(WSAStartup(MAKEWORD(2,2),&Ws)!=0)
{
printf("init windows socket failed:%d\n",GetLastError());
return -1;
}
serSocket=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
if(serSocket==INVALID_SOCKET)
{
printf("create socket failed:%d\n",GetLastError());
return -1;
}
localAddr.sin_family=AF_INET;
localAddr.sin_port=htons(SERVER_PORT);
localAddr.sin_addr.s_addr=inet_addr(SERVER_IP);
memset(localAddr.sin_zero,0x00,8);

Bit=bind(serSocket,(struct sockaddr*)&localAddr,sizeof(localAddr));
if(Bit!=0)
{
printf("bind failed:%d\n",GetLastError());
return -1;
}
Lit=listen(serSocket,5);
if(Lit!=0)
{
printf("listen failed:%d\n",GetLastError());
return -1;
}
printf("server has been startup\n");
while(true)
{
cliLen=sizeof(clientAddr);
cliSocket=accept(serSocket,(struct sockaddr*)&clientAddr,&cliLen);
if(cliSocket==INVALID_SOCKET)
{
printf("accept failed:%d\n",GetLastError());
return -1;
}