Windows平台下实现多线程服务器端 客户端运行窗口闪退

运行时先运行的服务器端可以弹出窗口，但后运行客户端窗口就会一闪而过
已经在return 0 前加了暂停 但还是没有用

客户端代码

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
#include <windows.h>
#include <process.h> 
#pragma comment(lib, "ws2_32.lib")
    
#define BUF_SIZE 100
#define NAME_SIZE 20
    
unsigned WINAPI SendMsg(void * arg);
unsigned WINAPI RecvMsg(void * arg);
void ErrorHandling(char * msg);
    
char name[NAME_SIZE]="[DEFAULT]";
char msg[BUF_SIZE];
    
int main(int argc, char *argv[])
{
    WSADATA wsaData;
    SOCKET hSock;
    SOCKADDR_IN servAdr;
    HANDLE hSndThread, hRcvThread;
    if(argc!=4) {
        printf("Usage : %s <IP> <port> <name>\n", argv[0]);
        exit(1);
    }
    if(WSAStartup(MAKEWORD(2, 2), &wsaData)!=0)
        ErrorHandling("WSAStartup() error!"); 

    sprintf(name, "[%s]", argv[3]);
    hSock=socket(PF_INET, SOCK_STREAM, 0);
    
    memset(&servAdr, 0, sizeof(servAdr));
    servAdr.sin_family=AF_INET;
    servAdr.sin_addr.s_addr=inet_addr(argv[1]);
    servAdr.sin_port=htons(atoi(argv[2]));
      
    if(connect(hSock, (SOCKADDR*)&servAdr, sizeof(servAdr))==SOCKET_ERROR)
        ErrorHandling("connect() error");
    
    hSndThread=
        (HANDLE)_beginthreadex(NULL, 0, SendMsg, (void*)&hSock, 0, NULL);
    hRcvThread=
        (HANDLE)_beginthreadex(NULL, 0, RecvMsg, (void*)&hSock, 0, NULL);

    WaitForSingleObject(hSndThread, INFINITE);
    WaitForSingleObject(hRcvThread, INFINITE);
    closesocket(hSock);
    WSACleanup();
    //getchar();
    system("pause");
    return 0;
}
    
unsigned WINAPI SendMsg(void * arg)   // send thread main
{
    SOCKET hSock=*((SOCKET*)arg);
    char nameMsg[NAME_SIZE+BUF_SIZE];
    while(1) 
    {
        fgets(msg, BUF_SIZE, stdin);
        if(!strcmp(msg,"q\n")||!strcmp(msg,"Q\n")) 
        {
            closesocket(hSock);
            exit(0);
        }
        sprintf(nameMsg,"%s %s", name, msg);
        send(hSock, nameMsg, strlen(nameMsg), 0);
    }
    return 0;
}
    
unsigned WINAPI RecvMsg(void * arg)   // read thread main
{
    int hSock=*((SOCKET*)arg);
    char nameMsg[NAME_SIZE+BUF_SIZE];
    int strLen;
    while(1)
    {
        strLen=recv(hSock, nameMsg, NAME_SIZE+BUF_SIZE-1, 0);
        if(strLen==-1) 
            return -1;
        nameMsg[strLen]=0;
        fputs(nameMsg, stdout);
    }
    return 0;
}
    
void ErrorHandling(char *msg)
{
    fputs(msg, stderr);
    fputc('\n', stderr);
    exit(1);
}

客户端命令参数127.0.0.1 9190
服务器端命令参数 9190

服务器代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
#include <process.h> 
#pragma comment(lib, "ws2_32.lib")

#define BUF_SIZE 100
#define MAX_CLNT 256

unsigned WINAPI HandleClnt(void * arg);
void SendMsg(char * msg, int len);
void ErrorHandling(char * msg);

int clntCnt=0;
SOCKET clntSocks[MAX_CLNT];
HANDLE hMutex;

int main(int argc, char *argv[])
{
    WSADATA wsaData;
    SOCKET hServSock, hClntSock;
    SOCKADDR_IN servAdr, clntAdr;
    int clntAdrSz;
    HANDLE  hThread;
    if(argc!=2) 
    {
        printf("Usage : %s <port>\n", argv[0]);
        exit(1);
    }
    if(WSAStartup(MAKEWORD(2, 2), &wsaData)!=0)
        ErrorHandling("WSAStartup() error!"); 
  
    hMutex=CreateMutex(NULL, FALSE, NULL);
    hServSock=socket(PF_INET, SOCK_STREAM, 0);

    memset(&servAdr, 0, sizeof(servAdr));
    servAdr.sin_family=AF_INET; 
    servAdr.sin_addr.s_addr=htonl(INADDR_ANY);
    servAdr.sin_port=htons(atoi(argv[1]));
    
    if(bind(hServSock, (SOCKADDR*) &servAdr, sizeof(servAdr))==SOCKET_ERROR)
        ErrorHandling("bind() error");
    if(listen(hServSock, 5)==SOCKET_ERROR)
        ErrorHandling("listen() error");
    
    while(1)
    {
        clntAdrSz=sizeof(clntAdr);
        hClntSock=accept(hServSock, (SOCKADDR*)&clntAdr,&clntAdrSz);
        
        WaitForSingleObject(hMutex, INFINITE);
        clntSocks[clntCnt++]=hClntSock;
        ReleaseMutex(hMutex);
    
        hThread=
            (HANDLE)_beginthreadex(NULL, 0, HandleClnt, (void*)&hClntSock, 0, NULL);
        printf("Connected client IP: %s \n", inet_ntoa(clntAdr.sin_addr));
    }
    closesocket(hServSock);
    WSACleanup();
    system("pause");
    return 0;
}
    
unsigned WINAPI HandleClnt(void * arg)
{
    SOCKET hClntSock=*((SOCKET*)arg);
    int strLen=0, i;
    char msg[BUF_SIZE];
    
    while((strLen=recv(hClntSock, msg, sizeof(msg), 0))!=0)
        SendMsg(msg, strLen);
    
    WaitForSingleObject(hMutex, INFINITE);
    for(i=0; i<clntCnt; i++)   // remove disconnected client
    {
        if(hClntSock==clntSocks[i])
        {
            while(i++<clntCnt-1)
                clntSocks[i]=clntSocks[i+1];
            break;
        }
    }
    clntCnt--;
    ReleaseMutex(hMutex);
    closesocket(hClntSock);
    return 0;
}
void SendMsg(char * msg, int len)   // send to all
{
    int i;
    WaitForSingleObject(hMutex, INFINITE);
    for(i=0; i<clntCnt; i++)
        send(clntSocks[i], msg, len, 0);

    ReleaseMutex(hMutex);
}
void ErrorHandling(char * msg)
{
    fputs(msg, stderr);
    fputc('\n', stderr);
    exit(1);
}