PracticeDev/study_cpp/tcp/tcpserver.cpp

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2022-12-20 17:31:11 +08:00
//tcpserver.cc
#include <iostream>
#include <cstring>
#include <strings.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
using namespace std;
int main(int argc, char *argv[])
{
//创建套接字
int sk = socket(AF_INET, SOCK_STREAM, 0);
struct sockaddr_in server;
bzero(&server, sizeof(server));
server.sin_family = AF_INET;
server.sin_port = htons(atoi(argv[1]));
server.sin_addr.s_addr = htonl(INADDR_ANY);
//端口绑定
bind(sk, (struct sockaddr*)&server, sizeof(server));
//监听
listen(sk, 5);
struct sockaddr_in client;
bzero(&client, sizeof(client));
socklen_t len = sizeof(client);
//接受连接请求
int talk = accept(sk, (struct sockaddr*)&client, &len);
//发送数据
send(talk, "Hello", strlen("Hello") + 1, 0);
//接收数据
char buff[1024] = {'\0'};
recv(talk, buff, sizeof(buff), 0);
cout << buff << endl;
//关闭套接字
close(talk);
close(sk);
return 0;
}