2.1 Transport

Protocol servers MUST support SOAP over HTTP. Protocol servers SHOULD additionally support SOAP over HTTPS for securing communication with protocol clients.

Protocol messages MUST be formatted as specified either in [SOAP1.1], Section 4 or in [SOAP1.2-1/2007], Section 5. Protocol server faults MUST be returned either using HTTP Status Codes as specified in [RFC2616], Section 10 or using SOAP faults as specified either in [SOAP1.1], (Section 4.4) or in [SOAP1.2-1/2007], (Section 5.4, SOAP Fault).