用Mailslot写的客户端和服务器，客户端能向服务器多次发送消息，而服务器可以显示客户端发来的消息

服务器客户端通讯的Windows邮件槽技术实现

最新推荐文章于 2025-10-27 15:39:55 发布

原创最新推荐文章于 2025-10-27 15:39:55 发布 · 324 阅读

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本文详细介绍了使用Windows邮件槽技术实现服务器与客户端之间的通讯，包括服务器端创建邮件槽、接收消息以及客户端连接邮件槽并发送消息的过程。

服务器程序：

#include<Windows.h>
#include<stdio.h>

int main()
{
HANDLE mail;
mail = ::CreateMailslot(L"\\\\.\\mailslot\\my", 0, MAILSLOT_WAIT_FOREVER, 0);

if (mail == INVALID_HANDLE_VALUE)
{
  printf("Create mailslot failed!!\n");
  return 0;
}
else
{
  printf("Created successfully!!\n");
  char text[200];
  DWORD readtext;
  while (1)
  {
   if (ReadFile(mail, text, 200, &readtext, nullptr))
   {
    printf("客服端对你说：%s",text);
    printf("\n");
   }
  }
}

::Sleep(10000);
::CloseHandle(mail);
return 0;
}

客户端程序：

#include<Windows.h>
#include<stdio.h>
#include<iostream>

int main()
{
HANDLE mail2;
char text[] = "Hello, server!!";
DWORD writetext;
/*
   CreateFileW(
    _In_ LPCWSTR lpFileName,
    _In_ DWORD dwDesiredAccess,
    _In_ DWORD dwShareMode,
    _In_opt_ LPSECURITY_ATTRIBUTES lpSecurityAttributes,
    _In_ DWORD dwCreationDisposition,
    _In_ DWORD dwFlagsAndAttributes,
    _In_opt_ HANDLE hTemplateFile
    );

*/
mail2 = ::CreateFile(L"\\\\.\\mailslot\\my", GENERIC_WRITE, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (INVALID_HANDLE_VALUE == mail2)
{
  printf("Mailslot open failed\n");

}
else
{
  while (1)
  {
   std::cout << "please input what you want to send to server : " << std::endl;
   std::cin >> text;
     if (WriteFile(mail2, text, sizeof(text), &writetext, NULL))
     {
    Sleep(1000);
    printf("Write successfully!!\n");
     }
     else
     {
    printf("Write failed!!\n");
    break;
     }
  }
}

::CloseHandle(mail2);
::Sleep(10000);

return 0;
}