【正文】 ! standardized, pluggable headers Microsoft Architects Forum 13 WSAdressing SOAP URI WSAddressing Microsoft Architects Forum 14 Motivations (1/3) ? Services running behind intermediaries ? Current problems ? Private A can’t talk to private B ? NAT ? Solutions available today ? VPN’s ? Open firewall ports ? Move service to public zone Microsoft Architects Forum 15 Motivations (2/3) ? Long running munications ? Current problems ? HTTP timeouts ? Open connections ? Mobility Microsoft Architects Forum 16 Motivations (3/3) ? Event notification ? Current problems ? HTTP’s request/response ? Response always to sender Microsoft Architects Forum 17 WSAddressing ? Addresses resources ? Shipping addresses in messages ? Addressing messages to resources ? Enables transportneutral messaging ? Hides internal resource anization Microsoft Architects Forum 18 Resource Resource Resource Resource Resource Resource Resource Resource Resource Port wsa:Address wsa:ReferenceProperties wsa:ReferenceProperties wsa:ReferenceProperties Resource Resource wsa:ReferenceProperties Resource Model Microsoft Architects Forum 19 Endpoint Reference a:EndpointReference xmlns:a=39。Microsoft Architects Forum 1 Update on the Web Services Platform Update: [39。amp。 xmlns:m=39。 a:Address a:ReferenceProperties m:Info/m:Info /a:ReferenceProperties p:Policy ... /p:Policy a:/EndpointReference [Address] property Network address of resource [Reference Properties] Other addressing information Policy for this resource ? “Generalized URI” ? EPR = Address + Reference Properties Microsoft Architects Forum 20 Message Information Headers ? WSAddressing defines header elements Property Header Notes destination wsa:To From wsa:Address recipient wsa:Recipient An endpoint reference source endpoint wsa:From An endpoint reference reply endpoint wsa:ReplyTo An endpoint reference fault endpoint wsa:FaultTo An endpoint reference action wsa:Action Name of logical action message id wsa:MessageID Unique ID relationship wsa:RelatesTo Provides for correlation Microsoft Architects Forum 21 WSAdressing SOAP URI WSAddressing Microsoft Architects Forum 22 Messaging SOAP URI WSAddressing Microsoft Architects Forum 23 Metadata WSDL WSPolicy WSPolicy Attachment WSPolicy Assertions WSMetadata Exchange Microsoft Architects Forum 24 Metadata WSPolicy WSPolicy Attachment WSPolicy Assertions WSDL WSMetadata Exchange Microsoft Architects Forum 25 Motivation ? Expressing ? Requirements ? . Secure conversation ? Capabilities ? . Asymmetric encryption using ? Preferences ? . preferred over username token Microsoft Architects Forum 26 Web Services Policy Specs ? WSPolicy ? Web Services policy framework ? Statements about resources ? Receiver requirements (design time) ? Requirements to capabilities (runtime) ? WSPolicyAttachement ? Policy expression to subject (. EPR) ? WSPolicyAssertions ? Individual property (. capability) Microsoft Architects Forum 27 Metadata WSDL