November 11, 2001 - The WSDL's binding Element | WebReference

November 11, 2001 - The WSDL's binding Element

Yehuda Shiran November 11, 2001
The WSDL's binding Element
Tips: November 2001

Yehuda Shiran, Ph.D.
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Each binding element in the Web service's description file describes a supported protocol. Similar to the portType element, the binding element includes supported operations, as well as the input and output for each operation. The bindings provide concrete information on what protocol is being used, how the data is being transported, and where the service is located. For SOAP protocol, the binding is <soap:binding>, and the transport is SOAP messages on top of HTTP protocol. Here is the binding element from the Temperature - Weather Web service:

<binding name="TemperatureBinding" type="tns:TemperaturePortType">
  <soap:binding style="rpc" transport="https://schemas.xmlsoap.org/soap/http" /> 
    <operation name="getTemp">
      <soap:operation soapAction="" /> 
        <input>
          <soap:body use="encoded" namespace="urn:xmethods-Temperature" 
            encodingStyle="https://schemas.xmlsoap.org/soap/encoding/" /> 
        </input>
        <output>
          <soap:body use="encoded" namespace="urn:xmethods-Temperature" 
            encodingStyle="https://schemas.xmlsoap.org/soap/encoding/" /> 
        </output>
    </operation>
</binding>