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1.4 Relationship to Other Protocols

The reporting and metadata synchronization protocols include Web services that use SOAP (as specified in [SOAP1.1]) over HTTP or HTTPS (as specified in [RFC2616]) for communication. The self-update and content synchronization protocols use HTTP 1.1 (as specified in [RFC2616]).


Figure 1: Relationship between protocols related to Windows Server Update Services: Client-Server Protocol

Content download (both update content and self-update content directory) uses HTTP 1.1 HEAD and GET (Range) requests (as specified in [RFC2616] sections 9.3 and 9.4).

This specification is closely related to the Windows Server Update Services: Server-Server Protocol, as specified in [MS-WSUSSS], which defines mechanisms for synchronizing updates within a hierarchical configuration of update servers.

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