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>
#include<iostream>
using namespace std;
int main(){
//創建套接字
int serv_sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
//將套接字和IP、端口綁定
struct sockaddr_in serv_addr;
memset(&serv_addr, 0, sizeof(serv_addr)); //每個字節都用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"); //具體的IP地址
serv_addr.sin_port = htons(1234); //端口
bind(serv_sock, (struct sockaddr*)&serv_addr, sizeof(serv_addr));
//進入監聽狀態,等待用戶發起請求
listen(serv_sock, 20);
while(1)
{
//接收客戶端請求
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);
//向客戶端發送數據
char buffer[200];
read(clnt_sock,buffer, sizeof(buffer)-1);
cout<<buffer<<endl;
write(clnt_sock, buffer, sizeof(buffer));
close(clnt_sock);
}
//關閉套接字
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>
#include<iostream>
using namespace std;
int main(){
//創建套接字
int sock = socket(AF_INET, SOCK_STREAM, 0);
//向服務器(特定的IP和端口)發起請求
struct sockaddr_in serv_addr;
memset(&serv_addr, 0, sizeof(serv_addr)); //每個字節都用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"); //具體的IP地址
serv_addr.sin_port = htons(1234); //端口
connect(sock, (struct sockaddr*)&serv_addr, sizeof(serv_addr));
//讀取服務器傳回的數據
char buffer[200];
cin>>buffer;
write(sock, buffer, sizeof(buffer));
read(sock, buffer, sizeof(buffer)-1);
printf("Message form server: %s\n", buffer);
//關閉套接字
close(sock);
return 0;
}