aplfw/driver/tcpip/tcpip/tcpip_read.c

   1 /**
   2  *  Hyper Operating System  Application Framework
   3  *
   4  * @file  tcpip.h
   5  * @brief %jp{TCP/IP プロトコル}
   6  *
   7  * Copyright (C) 2006-2007 by Project HOS
   8  * http://sourceforge.jp/projects/hos/
   9  */
  10
  11
  12 #include "tcpip_local.h"
  13
  14
  15 /* IPパケット受信 */
  16 FILE_SIZE TcpIp_Read(C_DRVOBJ *pDrvObj, C_FILEOBJ *pFileObj, void *pBuf, FILE_SIZE Size)
  17 {
  18         C_TCPIP         *self;
  19         C_TCPIPFILE     *pFile;
  20         int                     iRecvSize;
  21
  22         /* upper cast */
  23         self  = (C_TCPIP *)pDrvObj;
  24         pFile = (C_TCPIPFILE *)pFileObj;
  25
  26
  27         if ( pFile->iType == TCPIPFILE_TYPE_UDP )
  28         {
  29                 unsigned short uhUdpSize;
  30
  31                 while ( StreamBuf_RefDataSize(&pFile->RecvBuf) < sizeof(uhUdpSize) + sizeof(T_TCPIP_ADDRESS) )
  32                 {
  33                         SysEvt_Wait(pFile->hEvtRecv);
  34                 }
  35
  36                 StreamBuf_RecvData(&pFile->RecvBuf, &uhUdpSize, sizeof(uhUdpSize));
  37                 StreamBuf_RecvData(&pFile->RecvBuf, pBuf, sizeof(T_TCPIP_ADDRESS) + (uhUdpSize - 8));
  38
  39                 iRecvSize = sizeof(T_TCPIP_ADDRESS) + (uhUdpSize - 8);
  40         }
  41
  42         return iRecvSize;
  43 }
  44
  45
  46 /* endof file */