SOAP Header element
Translation results：
SOAP is a simple XML-based protocol that enables applications to exchange information over HTTP.
Or more simply: SOAP is a protocol for accessing web services.
SOAP Header elementsyntax
The optional SOAP Header element can contain application-specific information about the SOAP message (such as authentication, payment, etc.).
If the Header element is provided, it must be the first child of the Envelope element.
SOAP Header elementexample
<?xml version="1.0"?> <soap:Envelope xmlns:soap="http://www.w3.org/2001/12/soap-envelope" soap:encodingStyle="http://www.w3.org/2001/12/soap-encoding"> <soap:Header> <m:Trans xmlns:m="http://www.w3schools.com/transaction/" soap:mustUnderstand="1">234 </m:Trans> </soap:Header> ... ... </soap:Envelope>