Microsoft KB Archive/131495

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INFO: RPC CALLBACK Attribute and Unsupported Protocol Sequences

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Q131495

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The information in this article applies to:


 * Microsoft Win32 Software Development Kit (SDK), version 3.5

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SUMMARY
The CALLBACK attribute of RPC does not support connection-less protocol sequences.

MORE INFORMATION
If an RPC interface has a procedure with the CALLBACK attribute, it can only make use of connection-oriented protocol sequences. The following protocol sequences are not supported:


 * ncadg_ip_udp
 * ncadg_ipx

If an RPC client tries to call a remote procedure that in turn calls a procedure back on client, the client will be able to make the initial call, but when the server tries to call the procedure on client, the RPC run time generates exception 1726: The remote procedure call failed.

Additional query words:

Keywords : kbnetwork kbAPI kbOSWinNT350 kbRPC kbSDKPlatform kbGrpDSNet

Issue type : kbinfo

Technology : kbWin32SDKSearch kbAudDeveloper kbSDKSearch kbWin32sSearch kbWin32SDK350