By accident I have recently found a JSON-RPC protocol and discovered that I have almost "reinvented" it in one of our side projects. So I have decided to write a client/server implementation from scratch based on json-rpc 2.0 specification. Sources and additional information are available at http://github.com/xored/jsonrpc. And below is a short, but fully functional example on using it.

On server side:

using util
using jsonrpc

class Server : AbstractMain
{
  @Opt Int port := 8080

  override Int run()
  {
    runServices([
        WispService
        {
          it.port = this.port
          it.root = RpcMod(MathHandler())
        }
       ])
  }
}

** All methods from this class will be available to clients
const class MathHandler : ReflectHandler
{
  Int sum(Int[] args) { args.reduce(0) |Int r, Int v->Int| { r + v } }
}

And the client side:

using jsonrpc

class Client
{
  static Void main()
  {
    //prints 6
    echo(RpcWebClient(`http://localhost:8080`).request("sum", [[1,2,3]]) 
  }
}

Comments and pull requests are welcome :)

That looks really cool. Sadly I don't have git installed, yet. I can definitely can see this being useful for server like tales, etc.

Cool stuff.