Consuming web services

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Posted on by PIX

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Hi,

I need to consume an external WEB Services from AX 2012 and the web service provider asked me how to create this service:

- WCF Web Service

- RESTful web service

Which are the differences and which could be the best solution in AX?

Are there any important request I could address to the provider to make the development easier from AX point of view?

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Martin Dráb 237,795 Most Valuable Professional on at

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You're comparing apples and oranges - you can implement RESTful web services with Windows Communication Foundation (WCF); they're not alternatives. Maybe you wanted to compare REST and SOAP services?

Since AX supports SOAP and not REST, the choice is obvious. If you have to use REST, you'll have to implement your own middle-tier web service.

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nunomaia 25 Moderator on at

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From my point of view, they are both valid technologies to consume web services on AX. You can find a detailed article comparing bother technologies in MSDN msdn.microsoft.com/.../hh273094(v=vs.100).aspx

From Dynamics AX perspective, shouldn’t exist a great difference between a WCF service and REST service, the main difference is that how client the .NET consumes the service. I personally prefer a WCF service if the client/service is a set of complex actions.

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nunomaia 25 Moderator on at

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An Additional comment, to consume an external web services in REST you need external libs, for example https://github.com/restsharp

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Martin Dráb 237,795 Most Valuable Professional on at

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Ah, sorry, forget my remark about the middle-tier service. I forgot for a moment that we're talking about consuming, not exposing services.

@Nuno: WCF includes REST services, therefore talking about differences between WCF and REST services doesn't make sense.

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nunomaia 25 Moderator on at

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[quote user="Martin Dráb"]

@Nuno: WCF includes REST services, therefore talking about differences between WCF and REST services doesn't make sense.

[/quote]

You are right on that point, my comment should be rephrased as SOAP versus REST.

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PIX 570 on at

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Martin,

let me resume, pls correct me if wrong :

REST and SOAP are both valid technologies both consumable by AX 2012

The WCF can include both (REST and SOAP) and in both cases the provider which expose the service could send me a WSDL to start consuming the service

Pls confirm

TKS

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nunomaia 25 Moderator on at

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I’m not sure if a REST service will expose a WSDL to you, I don’t member a single REST service that I have consumed that exposed a WSDL. REST services are simple PUT / GET HTTP operations using JSON format. For REST I always used RestSharp lib and not WCF directly.

To consume a WCF, it is a traditional .net client consumer using Visual Studio wizard.

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Martin Dráb 237,795 Most Valuable Professional on at

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WSDL is used by SOAP services only; it has no place in REST APIs.

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