调用WinApi实现邮槽通信C/S实例

Just a test.高手无视.

服务端:

//Code by Pnig0s1992
//Date:2012,3,19
#include <stdio.h>
#include <Windows.h>  

VOID UseMailSlot(LPTSTR lpMailSlotName);  

int main(int argc,char **argv)
{
    LPTSTR lpSlotName = TEXT("\\\\.\\mailslot\\first_slot");
    UseMailSlot(lpSlotName);
    return 0;
}  

VOID UseMailSlot(LPTSTR lpMailSlotName)
{
    HANDLE hMailSlot;
    BOOL bResult;
    DWORD dwMessageSize;
    DWORD dwMessageCount;
    DWORD dwHasReadBytes;
    hMailSlot = CreateMailslot(lpMailSlotName,0,MAILSLOT_WAIT_FOREVER,NULL);
    if(hMailSlot == INVALID_HANDLE_VALUE)
    {
        printf("\nCreate mailslot:%S failed.",lpMailSlotName);
        return;
    }else
    {
        printf("\nCreate mailslot successfully.");
    }
    int iCount = 0;
    int index = 0;
    while (1)
    {
        bResult = GetMailslotInfo(hMailSlot,NULL,&dwMessageSize,&dwMessageCount,NULL);
        if(!bResult)
        {
            printf("\nGetMailslotInfo failed with error:%d",GetLastError());
            CloseHandle(hMailSlot);
            return;
        }
        if(dwMessageCount == 0)
        {
            printf("\nNo.%d wait for message.",iCount+1);
            iCount++;
            Sleep(2000);
            continue;
        }
        while(dwMessageCount != 0)
        {
            LPTSTR lpMessageBuffer = (LPTSTR)HeapAlloc(GetProcessHeap

(),HEAP_ZERO_MEMORY,dwMessageSize);
            if(lpMessageBuffer == NULL)
            {
                printf("\nHeapAlloc failed with error:%d",GetLastError());
                CloseHandle(hMailSlot);
                return;
            }
            bResult = ReadFile

(hMailSlot,lpMessageBuffer,dwMessageSize,&dwHasReadBytes,NULL);
            if(!bResult)
            {
                printf("\nReadFile failed with error:%d",GetLastError());
                HeapFree(GetProcessHeap(),0,lpMessageBuffer);
                CloseHandle(hMailSlot);
                return;
            }
            printf("\nReceive No.%d message from client.\nContent:%S",index+1,lpMessageBuffer);
            index++;
            HeapFree(GetProcessHeap(),0,lpMessageBuffer);
            bResult = GetMailslotInfo(hMailSlot,0,&dwMessageSize,&dwMessageCount,NULL);
            if(!bResult)
            {
                printf("\nGetMailslotInfo failed with error:%d",GetLastError());
                return;
            }
        }
    }
    return;
}

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