SOAP HTTP Binding

SOAP Web Service Tutorials - Herong's Tutorial Examples

∟SOAP HTTP Binding

This chapter describes SOAP HTTP Binding and mapping rules for SOAP Message Exchange Patterns.

SOAP HTTP Binding is an extension of SOAP framework specification that support the following message exchange patterns and features with HTTP/1.1 protocol:

Request-Response Message Exchange Pattern
Response Message Exchange Pattern
SOAP Web Method Feature
SOAP Action Feature

SOAP HTTP Binding is named as: http://www.w3.org/2003/05/soap/bindings/HTTP/

SOAP HTTP Binding defines the following rules:

Rule 1: SOAP messages must be communicated using media type "application/soap+xml".

Rule 2: The supported message exchange patterns are mapped to Web methods as follows:

"http://www.w3.org/2003/05/soap/mep/request-response/" --> "POST"
"http://www.w3.org/2003/05/soap/mep/soap-response/" --> "GET"

Rule 3: The SOAP node acting as the HTTP client may assume the "RequestingSOAPNode" role.

Rule 4: The SOAP node acting as the HTTP server may assume the "RespondingSOAPNode" role.

Rule 5: The requesting node in the "Init" state should prepare the HTTP request as follows:

Request URI: Take the value from http://www.w3.org/2003/05/soap/mep/ImmediateDestination
HTTP Method: Take the value from http://www.w3.org/2003/05/soap/features/web-method/Method
Content-Type header line: Set to "application/soap+xml"
Action parameter: Take the value from http://www.w3.org/2003/05/soap/features/action/Action
Request body: Take the value from http://www.w3.org/2003/05/soap/mep/OutboundMessage