BizTalk ESB Toolkit: Two-way Request Response Itinerary process | Web Service call from ESB | Part 1

In this article, I would demonstrate how to develop a 2 way itinerary process invoking a web service. This can be achieved in 2 ways, either service request transformation at On-Ramp or at Off-Ramp. If we have to use transformation at on ramp or off ramp ESB Dispatcher component should be used in the pipeline.

Itineraries:-
Service request transformation at On-Ramp
{OnRamp[Static Resolver,Two-Way Receive Port] -->Messaging Extender[Static Map Resolver, Canonical Xform]-->Messaging Extender[Static Map Resolver, Service Request Xform]}-->Off-Ramp Extender[Static Routing Resolver] -->OffRamp[Two-Way Dynamic Send Port]

Service request transformation at Off-Ramp
{OnRamp[Static Resolver,Two-Way Receive Port] -->Messaging Extender[Static Map Resolver, Canonical Xform]}-->Off-Ramp Extender[Static Routing Resolver] -->{Messaging Extender[Static Map Resolver, Service Request Xform]-->OffRamp[Two-Way Dynamic Send Port]}

Receive Port Configurations:
Two-way receive port with WCF-Custom webHttpbinding, shown below

Dynamic Send Port Configurations: 
Here is a screen shot of send ports, 

Deploy the itinerary and start the application, then test the solution by placing a request through fiddler and wait the response of the process. Refer test results below, 

Conclusion
In this article, I illustrated how to develop an itinerary process to invoke web service and respond back to caller.