Updated: July 16, 2012
Workflow Manager 1.0 provides activities for both HTTP-based and SOAP-based messaging, including two-way (request-response) and one-way patterns.
HTTP messaging can be done using the HttpGet, HttpPut, HttpPost, HttpDelete, and HttpMerge activities. These activities provide access to the request and response content, as well as the Uri, headers, and the status code. The body contents of the request and response messages can be controlled using a DynamicValue, which has a natural serialization to JSON, although XML formatting is also possible. For more information on these activities, please see Working with complex data in a workflow, DynamicValue Activities, and .2af7983b-8357-4e0f-9ba9-dfdeed05a8a7#BKMK_HttpActivities
The .NET 4 Framework Send & ReceiveReply activities can be used for SOAP-based messaging, although custom code is required. (For more information on supporting custom code in Workflow Manager 1.0, see Using Custom Code in Workflow Manager 1.0).
In this release of Workflow Manager 1.0, Add Service Reference functionality is not supported.