RestSharp removes the following pain points:
- Quirks in .NET s HTTP classes (basic authentication is broken, error handling for non-200 responses, etc)
- Automatic deserialization from response data to POCOs
- Simplified API (
request.AddParameter(name, value)
instead of manually compiling request bodies
- Simplified request/response semantics, especially for async (however, it s opinionated for async and may not meet everyone s needs, in which case I would also suggest evaluating Hammock)
Deserialization is probably the biggest gain since for most APIs you don t have to do very much to get the XML or JSON into your C# objects.
I would check out these pages for more info
https://github.com/restsharp/RestSharp/wiki
https://github.com/restsharp/RestSharp/wiki/RestSharp-Blog-Posts-and-Links
Feel free to post any questions here or on the Google Group