#include<stdio.h>
#include<string.h>
#include<unistd.h>
#include<sys/socket.h>
#include<arpa/inet.h>
#include<netinet/in.h>
#include<iostream>

using namespace std;


int main()
{
    /*
     *1、创建套接字
     *2、建立连接
     *3、收发消息
     * */
    int sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if(sockfd < 0)
    {
        perror("socket");
        return 0;
    }
    
    //调用connect接口
    struct sockaddr_in addr;
    addr.sin_family = AF_INET;
    addr.sin_port = htons(47000);
    addr.sin_addr.s_addr = inet_addr("119.91.210.136");

    int ret = connect(sockfd, (struct sockaddr*)&addr, sizeof(addr));
    if(ret < 0)
    {
        perror("connect");
        return 0;
    }

    while(1)
    {
        char buf[1024] = {0};
        cout << "Please enter your msg#";
        fflush(stdout);
        
        cin >> buf;

        int send_size = send(sockfd, buf, strlen(buf), 0);
        if(send_size < 0)
        {
            perror("send");
            continue;
        }
        //接收消息
        memset(buf, '\0', sizeof(buf));
        int recv_size = recv(sockfd, buf, sizeof(buf) - 1, 0);
        if(recv_size < 0)
        {
            continue;
        }
        else if(recv_size == 0)
        {
            //服务端将连接关闭了
            printf("server shutdown connect!\n");
            break;
        }
        printf("%s\n",buf);
    }

    close(sockfd);

    return 0;
}