使用VS2022写的C++聊天程序

我用VS2022写C++聊天程序，客户端与服务端连接时报错：

我的代码如下（除了客户端的头文件和资源文件）：
Client：

#define _WINSOCK_DEPRECATED_NO_WARNINGS

// Client.cpp : 定义应用程序的入口点。
//

#include "framework.h"
#include "Client.h"
#include <stdio.h>
#include <iostream>
#include <string.h>
#include <Ws2def.h>
using namespace std;

#define MAX_LOADSTRING 100



// Your code

// 全局变量:
HINSTANCE hInst;                                // 当前实例
WCHAR szTitle[MAX_LOADSTRING];                  // 标题栏文本
WCHAR szWindowClass[MAX_LOADSTRING];            // 主窗口类名

// 此代码模块中包含的函数的前向声明:
ATOM                MyRegisterClass(HINSTANCE hInstance);
BOOL                InitInstance(HINSTANCE, int);
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK    About(HWND, UINT, WPARAM, LPARAM);


SOCKET serverSocket;

void initTCP();
void mySend();
int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
                     _In_opt_ HINSTANCE hPrevInstance,
                     _In_ LPWSTR    lpCmdLine,
                     _In_ int       nCmdShow)
{
    UNREFERENCED_PARAMETER(hPrevInstance);
    UNREFERENCED_PARAMETER(lpCmdLine);

    // TODO: 在此处放置代码。

    // 初始化全局字符串
    LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
    LoadStringW(hInstance, IDC_CLIENT, szWindowClass, MAX_LOADSTRING);
    MyRegisterClass(hInstance);

    // 执行应用程序初始化:
    if (!InitInstance (hInstance, nCmdShow))
    {
        return FALSE;
    }

    HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_CLIENT));

    MSG msg;

    // 主消息循环:
    while (GetMessage(&msg, nullptr, 0, 0))
    {
        if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    }

    return (int) msg.wParam;
}



//
//  函数: MyRegisterClass()
//
//  目标: 注册窗口类。
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
    WNDCLASSEXW wcex;

    wcex.cbSize = sizeof(WNDCLASSEX);

    wcex.style          = CS_HREDRAW | CS_VREDRAW;
    wcex.lpfnWndProc    = WndProc;
    wcex.cbClsExtra     = 0;
    wcex.cbWndExtra     = 0;
    wcex.hInstance      = hInstance;
    wcex.hIcon          = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_CLIENT));
    wcex.hCursor        = LoadCursor(nullptr, IDC_ARROW);
    wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);
    wcex.lpszMenuName   = MAKEINTRESOURCEW(IDC_CLIENT);
    wcex.lpszClassName  = szWindowClass;
    wcex.hIconSm        = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

    return RegisterClassExW(&wcex);
}

//
//   函数: InitInstance(HINSTANCE, int)
//
//   目标: 保存实例句柄并创建主窗口
//
//   注释:
//
//        在此函数中，我们在全局变量中保存实例句柄并
//        创建和显示主程序窗口。
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   hInst = hInstance; // 将实例句柄存储在全局变量中

   HWND hWnd = CreateWindowW(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, nullptr, nullptr, hInstance, nullptr);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

//
//  函数: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  目标: 处理主窗口的消息。
//
//  WM_COMMAND  - 处理应用程序菜单
//  WM_PAINT    - 绘制主窗口
//  WM_DESTROY  - 发送退出消息并返回
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    char MessageText[60];
    HWND hwndButtonStartChat;
    HWND hwndButtonSendMessage;
    HWND hwndInput = NULL;

    switch (message)
    {
    case WM_CREATE: 
    {
        hwndButtonStartChat = CreateWindow(TEXT("Button"), TEXT("开始聊天"), WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 105, 10, 120, 60, hWnd, (HMENU)IDB_STARTCHAT, ((LPCREATESTRUCT)lParam)->hInstance, NULL);
        hwndButtonSendMessage = CreateWindow(TEXT("Button"), TEXT("发送文本"), WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 105, 80, 120, 60, hWnd, (HMENU)IDB_SENDTEXT, ((LPCREATESTRUCT)lParam)->hInstance, NULL);
        hwndInput = CreateWindow(TEXT("edit"), NULL,
            WS_CHILD | WS_VISIBLE | WS_VSCROLL | WS_HSCROLL | WS_BORDER |
            ES_LEFT | ES_MULTILINE | ES_AUTOHSCROLL | ES_AUTOVSCROLL,
            20, 20, 100, 50,
            hWnd, (HMENU)1, ((LPCREATESTRUCT)lParam)->hInstance, NULL);
        break;
    }
    case WM_GETTEXT:
        GetWindowText(hwndInput, (LPWSTR)MessageText, GetWindowTextLength(hwndInput));
        break;
    case WM_COMMAND:
        {
            int wmId = LOWORD(wParam);
            // 分析菜单选择:
            switch (wmId)
            {
            case IDM_ABOUT:
                DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
                break;
            case IDM_EXIT:
                DestroyWindow(hWnd);
                break;
            case IDB_STARTCHAT:
                initTCP();
                break;
            case IDB_SENDTEXT:
                send(serverSocket, MessageText, strlen(MessageText), NULL);
            default:
                return DefWindowProc(hWnd, message, wParam, lParam);
            }
        }
        break;
    case WM_PAINT:
        {
            PAINTSTRUCT ps;
            HDC hdc = BeginPaint(hWnd, &ps);
            // TODO: 在此处添加使用 hdc 的任何绘图代码...
            EndPaint(hWnd, &ps);
        }
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}

// “关于”框的消息处理程序。
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
    UNREFERENCED_PARAMETER(lParam);
    switch (message)
    {
    case WM_INITDIALOG:
        return (INT_PTR)TRUE;

    case WM_COMMAND:
        if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
        {
            EndDialog(hDlg, LOWORD(wParam));
            return (INT_PTR)TRUE;
        }
        break;
    }
    return (INT_PTR)FALSE;
}

void initTCP()
{
    WSADATA wsaData;
    if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
        // 初始化失败
        MessageBox(NULL, L"版本错误", NULL, NULL);
    }
    if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2)
    {
        printf("确定网络协议版本失败：%d\n", GetLastError());
    }
    serverSocket = socket(AF_INET, SOCK_STREAM, 0);
    if (serverSocket == INVALID_SOCKET)
    {
        int e = WSAGetLastError();
        LPTSTR lpsz = new TCHAR[100];
        _itow_s(e, lpsz, 100, 10);
        MessageBox(NULL, lpsz, NULL, NULL);
        delete lpsz;
        return;
    }

    SOCKADDR_IN addr = { 0 };
    addr.sin_family = AF_INET;
    addr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
    addr.sin_port = htons(9527);

    int r = connect(serverSocket, (sockaddr*)&addr, sizeof(addr));
    if (r == SOCKET_ERROR)
    {
        int e = WSAGetLastError();
        LPTSTR lpsz = new TCHAR[100];
        _itow_s(e, lpsz, 100, 10);
        MessageBox(NULL, lpsz, NULL, NULL);
        delete lpsz;
    }

    closesocket(serverSocket);
}

Server：

#define _WINSOCK_DEPRECATED_NO_WARNINGS
#include <stdio.h>
#include <iostream>
#include <winsock2.h>
#include <windows.h>
#include <Ws2tcpip.h>
#pragma comment (lib,"ws2_32.lib")

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

#define NUM 1024
SOCKET clientSocket[NUM];
int count = 0;
void tongxin(int idx)
{
    char buff[54];
    char temp[80];
    while (1)
    {
        recv(clientSocket[idx], buff, 55, NULL);
        memset(temp, 0, 80);
        sprintf_s(temp, "%d:%s", idx, buff);
        printf(">>%s\n", buff);


        for (int i = 0; i < count; i++)
        {
            send(clientSocket[i], temp, strlen(temp), NULL);
        }
    }
}

int main(int argc, char** argv) {
    int r = 0;
    WSADATA wsaData;
    WSAStartup(MAKEWORD(2, 2), &wsaData);
    if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2)
    {
        printf("确定网络协议版本失败：%d\n", GetLastError());
    }

    SOCKET serverSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (SOCKET_ERROR == serverSocket)
    {
        printf("创建socket失败：%d\n", GetLastError());
    }

    SOCKADDR_IN addr = { 0 };
    addr.sin_family = AF_INET;
    addr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
    addr.sin_port = htons(9527);
    SOCKADDR_IN caddr = { 0 };
    int csize = sizeof(caddr);

    r = bind(serverSocket, (sockaddr*)&addr, sizeof addr);
    if (-1 == r)
    {
        printf("绑定失败：%d\n", GetLastError());
    }

    r = listen(serverSocket, 10);
    if (-1 == r)
    {
        printf("监听失败：%d\n", GetLastError());
    }
    for (int i = 0; i < NUM; i++)
    {
        clientSocket[i] = accept(serverSocket, (sockaddr*)&caddr, &csize);
        if (r > 0)
        {
            std::cout << "ip地址：" << caddr.sin_addr.S_un.S_addr << "端口：" << caddr.sin_port << "\n";
            count++;
        }
        CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)tongxin, (LPVOID)i, NULL, NULL);
    }
    return 0;
}

你点一下重试就能看到问题在哪里了，顺着调用堆栈就可以找到问题