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2.1 Transport

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The NWS protocol supports both SOAP v1.1 and SOAP v1.2 requests. The corresponding response MUST be sent in the same SOAP version as the request. As mentioned in section 1.4, the communication is only supported over the HTTP/HTTPS protocol, specifically HTTP v1.1. If a request is sent using HTTP v1.0, the server MUST reject the request and return an HTTP 505 Version not supported error.