server.cpp
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netinet/in.h>
#define BUF_SIZE 100
int main()
{
//创建套接字
int serv_sock=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
//将套接字和ip、端口绑定
struct sockaddr_in serv_addr;
memset(&serv_addr,0,sizeof(serv_addr));//每个字节都用0填充
serv_addr.sin_family=AF_INET;//使用ipv4地址
serv_addr.sin_addr.s_addr=inet_addr("127.0.0.1");
serv_addr.sin_port=htons(9000);
bind(serv_sock,(struct sockaddr*)&serv_addr,sizeof(serv_addr));
//进入监听状态,等待用户发起请求
listen(serv_sock,20);
//接收客户端请求
struct sockaddr_in clnt_addr;
socklen_t clnt_addr_size=sizeof(clnt_addr);
int clnt_sock=accept(serv_sock,(struct sockaddr*)&clnt_addr,&clnt_addr_size);
//向客户端发送数据
char buffer[BUF_SIZE];
read(clnt_sock,buffer,sizeof(buffer));
printf("服务器端接收到的消息:%s\n",buffer);
write(clnt_sock,buffer,sizeof(buffer));
//关闭套接字
close(clnt_sock);
close(serv_sock);
return 0;
}
client.cpp
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#define BUF_SIZE 100
int main()
{
//创建套接字
int sock=socket(AF_INET,SOCK_STREAM,0);
//向服务器发起请求
struct sockaddr_in serv_addr;
memset(&serv_addr,0,sizeof(serv_addr));
serv_addr.sin_family=AF_INET;
serv_addr.sin_addr.s_addr=inet_addr("127.0.0.1");
serv_addr.sin_port=htons(9000);
connect(sock,(struct sockaddr*)&serv_addr,sizeof(serv_addr));
//向服务器发送数据
char buffersend[BUF_SIZE]={0};
printf("输入发送信息:");
fgets(buffersend,100,stdin);
write(sock,buffersend,sizeof(buffersend));
//读取服务器返回的数据
char bufferrecv[BUF_SIZE]={0};
read(sock,bufferrecv,sizeof(bufferrecv)-1);
//输出接收到的消息
printf("接收到的消息:%s\n",bufferrecv);
//关闭套接字
close(sock);
return 0;
}