1.7 Versioning and Capability Negotiation
This document covers versioning issues in the following areas:
Protocol Versions: DFS-R negotiates versioning as part of an RPC message; EstablishConnection is specified in section 220.127.116.11.2. This document specifies versions 0x00050000, 0x00050002, 0x00050003, and 0x00050004.
Localization: DFS-R does not expose any functionality that is localization-dependent.
Capability negotiation: DFS-R performs explicit capability negotiation as part of the protocol-version negotiation. Furthermore, on Windows, RDC similarity (as specified in [MS-RDC] section 18.104.22.168) is enabled only for Enterprise SKUs, as specified in sections 22.214.171.124.1 and 126.96.36.199.2.
DFS-R registers itself with RPC using a single UUID, as specified in section 2.1. It always uses the same RPC Protocol version 1.0 and negotiates specific extensions using the custom protocol negotiation scheme that uses the method EstablishConnection (section 188.8.131.52.2) to establish the further set of methods that can be used between a DFS-R client and a server. All but two methods can be used in the current two existing protocol versions, 0x00050000 and 0x00050002. The methods applicable to both protocol versions are specified in sections 184.108.40.206.1 through 220.127.116.11.14. The only method that is specific to protocol version 0x00050002 is specified in section 18.104.22.168.15. The capability of using similarity for speeding up downloads of RDC files can be controlled by using flags specified in section 22.214.171.124.1; the flags are communicated using the EstablishConnection method.