This is perfectly valid as long as all namespaces are defined and each element explicitly indicates the proper namespace in its declaration. In some cases, more than one namespace is needed to fully express the elements within the body of a single message. Both parties understand that namespaces pointing to the URI contain the elements defined in a specific WSDL file defined elsewhere. In the latter case, the URI is symbolic and does not need to actually load a copy of the definitions. The envelope element must include a namespace definition pointing to the universal soap namespace URI () and elements within the message typically use a namespace pointing to a public, online version of the WSDL file defining the included elements or to a public namespace URI representing the elements of the namespace. The is the content of the SOAP header and is the SOAP body.Īll of the elements within a SOAP message use XML namespaces to indicate where specific elements are defined. The body either contains the message content in a format defined by the Sonos WSDL file or contains fault elements conveying error information (Error handling). It should not be confused with HTTP headers which may also be part of the overall request.

The header must be the first element within the envelope if present and contains directives related to the message. The envelope contains an optional header and a required body element. SOAP messages are contained within a SOAP envelope, which must be the root element of the XML sent over the wire.

Both SOAP and WSDL are defined by the World Wide Web Consortium (better known as W3C), the same group that maintains HTML and many other internet standards. SOAP is used in conjunction with WSDL files that also use XML to define message formats and the mechanisms Web services can use to access them essentially the interface contract between the Web service and clients using it. SOAP is a platform and language independent communication protocol using XML and XML namespaces.

Sonos uses the SOAP protocol for the Sonos Music APIs.

Sonos add upnp player