HOWTO: Obtain the IP Address Assigned to a RAS Client

ID: Q160622

The information in this article applies to:

Microsoft Win32 Software Development Kit (SDK), used with:
- Windows 95
- Microsoft Windows NT versions 3.51, 4.0
- Microsoft Windows 2000

SUMMARY

The IP address assigned to a RAS client is obtained by the client program using the RasGetProjectionInfo API. You call this API after a RAS connection has been established.

MORE INFORMATION

If your program is using the RasDial API to establish a RAS connection, the following code demonstrates printing out the IP address assigned to your client by the RAS server:


if (!RasDial(NULL, NULL, &MyRasdialParams, 0L, NULL, &hRasConn))
   {
   cb = sizeof(proj_buf);
   proj_buf.dwSize = cb;
   if (!RasGetProjectionInfo(hRasConn, RASP_PppIp, (LPVOID)&proj_buf, &cb))
      printf("Client ip addr is %s\n",  proj_buf.szIpAddress);
   }

If your program did not establish the RAS connection, you need to call the RasEnumConnections API to obtain a list of RAS connections already established on your client machine. From this list of existing RAS connections, you can obtain a RAS connection handle that you can then pass into RasGetProjectionInfo (as the first parameter).

Additional query words:

Keywords : kbnetwork kbAPI kbIP kbNTOS351 kbNTOS400 kbWinOS2000 kbRAS kbSDKPlatform kbGrpNet
Version : WINDOWS:
Platform : WINDOWS
Issue type : kbhowto