//tcpclient.cc
#include <iostream>
#include <cstring>
#include <strings.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <unistd.h> // close
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;
    server.sin_family = AF_INET;
    server.sin_port = htons(atoi(argv[2]));
    server.sin_addr.s_addr = inet_addr(argv[1]);
    //连接服务器
    connect(sk, (struct sockaddr*)&server, sizeof(server));
 
    char buff[1024] = {'\0'};
    //接收数据
    recv(sk, buff, sizeof(buff), 0);
    cout << buff << endl;
    //发送数据
    send(sk, "I am hahaya", strlen("I am hahaya") + 1, 0);
 
    //关闭套接字
    close(sk);
    return 0;
}