Client windows socket packaged as such

client

TcpClient01.h

#pragma once

#include "AllHeader.h"

class TcpClient01
{
private:
    SOCKET skt;

public:
    //初始化socket
    void init();
    void connectServer(const char *IP, u_short port);
    void onRun();
    bool isRun();
    void readData();
    void writeData();

    void closeSocket();

public:
    TcpClient01();
    ~TcpClient01();
};

TcpClient01.cpp

#include "TcpClient01.h"
#include "define.h"


void TcpClient01::init() {
    WSADATA wd;
    int ret = WSAStartup(MAKEWORD(2, 2), &wd);
    if (ret != 0) {
        printf("[client] WSAStartup error ...\n");
        return ;
    }
    printf("[client] WSAStartup success ...\n");

    //创建套接字
    skt = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (skt == SOCKET_ERROR) {
        printf("[client] socket error ...\n");
        return;
    }
    printf("[client] socket success ...\n");
}

void TcpClient01::connectServer(const char *IP, u_short port) {
    if (skt == INVALID_SOCKET) {
        init();
    }
    //服务端信息
    sockaddr_in addrServ = { 0 };
    addrServ.sin_family = AF_INET;//IPV4协议
    addrServ.sin_port = htons(port);//端口
    addrServ.sin_addr.s_addr = inet_addr(IP);//IP地址

    //连接服务器
    if (connect(skt, (sockaddr *)&addrServ, sizeof(addrServ)) == SOCKET_ERROR) {
        printf("[client] connect error ...\n");
        return ;
    }
    printf("[client] connect success ...\n");
}

void TcpClient01::onRun() {
    while (true) {
        printf("*************************\n");
        printf("*getName                *\n");
        printf("*getAge                 *\n");
        printf("*exit                   *\n");
        printf("*************************\n");
        char szCmd[64] = { 0 };
        scanf("%s", szCmd);
        if (strcmp(szCmd, "exit") == 0) {
            printf("[client] exit ...\n");
            break;
        }
        send(skt, szCmd, strlen(szCmd) + 1, 0);

        char szRecv[1024] = { 0 };
        int ret = recv(skt, szRecv, sizeof(szRecv), 0);
        if (ret <= 0) {
            printf("[client] server exit ...\n");
            break;
        }
        printf("[server] msg: %s\n", szRecv);
    }
}
bool TcpClient01::isRun() {
    return skt != INVALID_SOCKET;
}
void TcpClient01::readData() {
    char szRecv[1024];
    int ret = recv(skt, szRecv, sizeof(szRecv), 0);
    if (ret <= 0) {
        printf("[client] server exit ...\n");
        return ;
    }
    DataPackage *p = (DataPackage*)szRecv;
    printf("[server] msg: age=%d name=%s\n", p->iAge, p->szName);
}
void TcpClient01::writeData() {
    char szCmd[1024];
    int iret = send(skt, szCmd, strlen(szCmd) + 1, 0);
    if (iret == SOCKET_ERROR) {
        printf("[client] send error ...\n");
        return;
    }
    printf("[client] send success ...\n");
}

void TcpClient01::closeSocket() {
    if (skt != INVALID_SOCKET) {
        closesocket(skt);
        WSACleanup();
        skt = INVALID_SOCKET;
    }
}

TcpClient01::TcpClient01(){
    skt = INVALID_SOCKET;
}


TcpClient01::~TcpClient01(){
    if (skt != INVALID_SOCKET) {
        closeSocket();
    }
}

The main function calls

// client packaged as such use 
int function07 () { 
    TcpClient01 Client; 
    client.connectServer ( " 192.168.3.18 " , 8080 ); 
    client.onRun (); 

    return  0 ; 
}