At first you should find the source code that calls WSAAsyncSelect and post the parameters passed here. However I doubt that Indy is calling it since Indy uses blocking winsock API (WSAAsyncSelect makes the socket non-blocking). At least a search in files for "WSAAsyncSelect" in the XE2 source directory tree doesn't find such a call. Provided Indy/DataSnap client do not call it, consider some personal firewall or security software being the culprit, they may hook into the winsock calls and mess them up. It's often not enough to disable but to uninstall/remove such buggy software.
-- Arno Garrels Jon Robertson wrote: > I apologize up front for sending this message to the list. I'm > hoping one of the WinSock gurus here may have some thoughts on this > strange issue. I use ICS components in my own source code. However, > this issue is NOT related to the ICS components. > > We have a DataSnap client talking to a DataSnap server via TCP/IP. > (Note DataSnap is using Indy, and I'm asking them as well.) For most > users, the client can connect to the socket without incident. > > However, on a given workstation where two Windows profiles can run our > software and connect successfully, a third Windows profile gets the > error "Invalid argument (#10022 in WSAAsyncSelect)" when trying to > connect. > > Same application, same exact build. The source code is not doing > anything specific to the Windows profile. User rights should not be > an issue. Just to be sure, we made Domain Users an Administrator on > one of the workstations we were testing. This made no difference. > > My best guess is that there are WinSock related configuration options > in HKCU that could be affecting WinSock? My first thought was the > MTU, but that is stored in HKLM\System. > > Has anyone seen something like this before? Where WSAAsyncSelect > will fail for one user but not another? > > Thank you so much for any thoughts you have. > > -- > Jon Robertson > Embarcadero Certified Delphi XE Developer > Good programming is 40% experience, 30% skill, 20% RTFM, 10% > caffeine, and 5% attention to detail. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
