Today in order to define ressource templates matching methods, URI and action we use strings everywhere like that

Action(6, "PUT", "/users/{userId}", "changeUser(string userId, body:Vlingo.Http.Tests.Sample.User.UserData userData)", "Vlingo.Http.Tests.Sample.User.UserDataMapper");

It would be much nicer instead of using magic string "changeUser(string userId, body:Vlingo.Http.Tests.Sample.User.UserData userData)" to use the expression tree

(resource, userId, userData) => resource.ChangeUser(userId, userData)

We could also replace magic string "PUT" by an enum

Implement benchmark tests with https://github.com/dotnet/BenchmarkDotNet in the same vein like for Java https://github.com/vlingo/vlingo-http/blob/master/src/test/java/io/vlingo/http/resource/BenchmarkTests.java

Needs further investigation why sometimes TestThatLoadBalancingClientDelivers and TestThatRoundRobinClientDelivers hangs on Appveyor and Travis CI.

The passing one is Ubuntu image. macOS, windows fail

I tried to create a simple HTTP service with simple GET method handle.
On MacOS there is a different NewLine convention ("\r\n"). Handling of such situation is present in code in RequestParser code, unfortunately dotNet String.IndexOf("\n", ..) does not work properly. Always returns -1 as index on MacOS.
Simple change from "\n":string to '\n':char fixes the issue.