设备上的 Web 服务编程接口定义和使用以下接口：
- IWSDAddress
- IWSDAsyncCallback
- IWSDAsyncResult
- IWSDAttachment
- IWSDDeviceHost
- IWSDDeviceHostNotify
- IWSDDeviceProxy
- IWSDEndpointProxy
- IWSDEventingStatus
- IWSDHttpAddress
- IWSDHttpMessageParameters
- IWSDInboundAttachment
- IWSDiscoveredService
- IWSDiscoveryProvider
- IWSDiscoveryProviderNotify
- IWSDiscoveryPublisher
- IWSDiscoveryPublisherNotify
- IWSDMessageParameters
- IWSDMetadataExchange
- IWSDOutboundAttachment
- IWSDScopeMatchingRule
- IWSDServiceMessaging
- IWSDServiceProxy
- IWSDServiceProxyEventing
- IWSDSignatureProperty
- IWSDSSLClientCertificate
- IWSDTransportAddress
- IWSDUdpAddress
- IWSDUdpMessageParameters
- IWSDXMLContext