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Resolved Getting IP Address of Remote Session
  1. How-to
0 Votes
  1. Gregory Rusak
  2. PowerBuilder
  3. Monday, 11 July 2022 10:35 PM UTC

Hello,

PowerBuilder 2021 Build 1288

We're in the process of trying to get the remote IP Address of the client machine when running our application through an RDP session.

We're successful at using the Windows WTSQuerySessionInformation API and get values for WTSClientName, WTSUserName, etc. but currently we're not able to get a value for WTSClientAddress.

It appears that according to the MSDN docs (https://docs.microsoft.com/en-us/windows/win32/api/wtsapi32/ne-wtsapi32-wts_info_class?redirectedfrom=MSDN):


"The IP address is offset by two bytes from the start of the Address member of the WTS_CLIENT_ADDRESS
structure."

Here's a snippet of code we're using to get the session info:

If WTSQuerySessionInformation(aul_hserver, aul_sessionid, aul_infoclass, lul_ppBuffer, lul_pBytesReturned) Then

    If lul_pBytesReturned > 0 Then
        ls_infovalue = String(lul_ppBuffer, 'address')
    end if

end if

How do we get the value out of the memory pointer skipping the first 2 bytes?

Thanks for your help in advance.

Greg

 

 

Connecting to Oracle using Kerberos Connection issue when compiling under 64-bit
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