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SOAP Version 1.1 provides an HTTP binding for exchanging a request and a response. This binding provides a "one-way" refinement that enables the HTTP response body to be empty.
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1 Introduction
1.1 Notational Conventions
2 SOAP 1.1 One-way HTTP Binding
3 References
3.1 Normative References
3.2 Informative References
A Change Log (Non-Normative)
The SOAP 1.1 One-way Binding (this document) defines modification to the SOAP 1.1 HTTP Binding [SOAP 1.1] to support sending a message without a SOAP response, aka a one-way message.
The keywords "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC 2119].
With the exception of examples and sections explicitly marked as "Non-Normative", all parts of this specification are normative.
This SOAP 1.1 One-way HTTP binding can be used for sending one-way messages. For such messages, the HTTP [RFC 2616] response MUST be a 202 status code and an empty HTTP body, aka no SOAP envelope. Any SOAP Envelope that is a response MUST be sent using a separate connection.