메일슬롯(MailSlot) IPC 통신 소스

/*
            MailRecevier
*/
#include <stdio.h>
#include <tchar.h>
#include <windows.h>
#define SLOT_NAME _T("\\\\.\\mailslot\\mailbox")
INT_PTR _tmain(INT_PTR argc, TCHAR *argv[])
{
         HANDLE hMailSlot;
         TCHAR messageBox[50];
         ULONG_PTR bytesRead;            //DWORD
         hMailSlot = CreateMailslot(SLOT_NAME, 0, MAILSLOT_WAIT_FOREVER, NULL);    // mailslot 생성
         if(hMailSlot==INVALID_HANDLE_VALUE)           
         {
                 _tprintf(_T("Unable to Create MailSlot!\n"));
                 return 1;
          }
          _tprintf(_T("******** Message ********\n"));
          
          while(1)
          {
                  if(!ReadFile(hMailSlot, messageBox, sizeof(TCHAR)*50, &bytesRead, NULL))  // 데이터 수신
                  {
                            _tprintf(_T("Unable to Read!\n"));
                            CloseHandle(hMailSlot);
                            return 1;
                   }
    
                   if(!_tcsncmp(messageBox, _T("exit"), 4))          // 받은 문자열이 "exit" 일때 종료
                   {
                            _tprintf(_T("Good Bye\n"));
                            break;
                   }
                   
                   messageBox[bytesRead/sizeof(TCHAR)]=0;       // NULL 문자 삽입
                   _tprintf(_T("%s\n"), messageBox);
          }
   
          CloseHandle(hMailSlot);
          return 0;
}

dakuo_mailRecevier.cpp

dakuo_mailrecevier.exe

/*
             MailSender
*/
#include <stdio.h>
#include <tchar.h>
#include <windows.h>
#define SLOT_NAME _T("\\\\.\\mailslot\\mailbox")
INT_PTR _tmain(INT_PTR argc, TCHAR *argv[])
{
          HANDLE hMailSlot;
          TCHAR message[50];
          ULONG_PTR bytesWritten;
          
          hMailSlot = CreateFile(SLOT_NAME, GENERIC_WRITE, FILE_SHARE_READ, NULL,
                                          OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
          if(hMailSlot==INVALID_HANDLE_VALUE)
          {
                  _tprintf(_T("Unable to Create MailSlot!\n"));
                  return 1;
           }

           while(1)
           {
                   _tprintf(_T("My Cmd>>"));         // _fputts(_T("My Cmd>>"), stdout);
                   _tscanf(_T("%s"), message);     // _fgetts(message, sizeof(message)/sizeof(TCHAR), stdin);
                   
                   if(!WriteFile(hMailSlot, message, _tcslen(message)*sizeof(TCHAR), &bytesWritten, NULL))
                   {
                           _tprintf(_T("Unable to Write!\n"));
                           CloseHandle(hMailSlot);
                    }
        
                   if(!_tcscmp(message, _T("exit")))
                   {
                           _tprintf(_T("Good Bye!"));
                           break;
                   }
            }
            CloseHandle(hMailSlot);
            return 0;
}

dakuo_MailSender.cpp

dakuo_MailSender.exe