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· Sep 16, 2019

Adding a new field to a web service API call

#SOAP #Caché

Currently one of our applications, coded in Cache, performs web service API calls out to one of our vendors.   We now need to be able to send a Client ID in the portion of the Soap envelope.  

I  think I have a clue of what I need to do but not 100% sure.  We were thinking we could use the method %SOAP.WebClient.SetHttpHeader(field name, value) but when I have tired using this method and looked at the Soap log to see what is sent, the field is never showing.  I realized I could be setting the wrong object using the method.

I have been looking at the documentation but I have not found what I need yet.

This is not using REST.

I would appreciate any suggestions.

Thanks.

Kris

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Kristina Roberts · Sep 17, 2019

Thanks for you suggestions.

I am working on Cache  version 2018.1.1.312.0.

I have updated ^ISCSOAP("Log') with the "h" and i still do not see the new field showing in the log.

I think I am not using the correct object to perform the SetHttpHeader method.    If I use the current object which is a class from the Vendor I don't get any errors.  I was thinking the method needs to be used with the %Net.HttpRequest class but when trying that the method doesn't exist - only the SetHeader method exists.  Tried that and it does not work.

Any other suggestions?

Thanks.

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Warlin Garcia · Sep 17, 2019

To add a new header, you need to create a subclass of  %SOAP.Header with the property you need. Once you have that then you can add it to the appropriate array e.g.

S myheader = ##class(MyNewHeader).%New()

S myheader.mykeyproperty = <myvalue>

D myservice.HeadersOut.SetAt(myheader,"MyNewHeader")

This is assuming the header is not automatically generated from the XML schema.

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