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Table of Contents

Info
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This page concerns v2.0 of the Specification. Supporting material on v1.0 is <tbd>

Requirement

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Title

Service interface protocols and data format

Identifier

SWIM-SERV-260

Requirement

A service description shall include or refer to information about:

  • the service interface protocols (including name and version); and
  • data format to be used.

Rationale

Makes explicit within the service description what the protocols are.

Verification

Completeness: Verify that all relevant protocols and versions are listed; verify that the information is provided for each provider side and consumer side interface.

Consistency: Verify that the protocols are consistent with the selected interface binding.

Correctness: Not Applicable.

Examples/Notes

Note: The list of supported protocols are the ones corresponding to the selected interface binding. The supported versions of the protocols need to be declared. E.g. version of the Transport Level Security (TLS).

Note: Data format examples include XML and JSON.

Level of Implementation

Mandatory

Guidance

tbd

Example

Example

Service interface protocols and data format

transport / messaging protocols

HTTP 1.1

SOAP1.1, SOAP1.2

Protocol implementation compliant with WSI Basic Profile 2.0


protocol configuration

HTTP Messages will indicate the payload content type using the content-type header

HTTP Messages that transport compressed payloads will use deflate/gzip/exi as expressed in the content-encoding header  (compression ratio is around 20%)

HTTP will use the chunked transfer encoding and indicate this in the transfer-encoding header.

HTTP will use the status header to indicate the status of the response using a code and corresponding meaning phrase. (see exception handling)

HTTP post method is supported


security

Server authentication based on  X.509 certificates

Client authenticates based on HTTP Basic

TLS1.2

Cypher Suites: AES_128_GCM_SHA256, AES_256_CCM


exception handling

The services make use of the standard HTTP 400 error [Bad Request] in any of the following cases:

  • The request is for an unsupported release
  • The request is not a well-formed XML
  • The request is a well-formed XML but it is not valid with respect to the XSD (i.e. it does not conform to the type and attribute names defined in the XSD and documented in the reference manuals). Examples of causes for invalid XML documents are:
    • Unexpected element or attribute
    • Element order violation
    • Incorrect primitive value
    • Unexpected enum value

data format