Topshelf.Owin

Extend TopShelf to be a self-hosted API using OWIN (Open Web Interface for .NET)

NB: Owin requires .NET 4.5 or later.

How to use

Install the Nuget package.

Install-Package Topshelf.Owin

Then modify your TopShelf service.

using Topshelf;
using TopShelf.Owin;

namespace YourService
{
    internal class Program
    {
        static void Main(string[] args)
        {
            HostFactory.Run(c =>
            {
                c.RunAsNetworkService();
         
                c.Service<YourService>(s =>
                {
                    s.ConstructUsing(() => new YourService());
                    s.WhenStarted((service, control) => service.Start());
                    s.WhenStopped((service, control) => service.Stop());

                    s.OwinEndpoint(app =>
                    {
                        app.Domain = "localhost";
                        app.Port = 8080;
                    });
                });

            });
        }

    }
}

If you want to use with AutoFac, then also add AutoFac.WebApi and TopShelf.AutoFac packages and then set the DependencyResolver.

s.OwinEndpoint(app =>
{
    app.UseDependencyResolver(new AutofacWebApiDependencyResolver(container));
}

By default, it will map routes using attributes on the actions. If you want to change the HttpCongfiguration to change routes or change the JSON serializer, you can:

s.OwinEndpoint(app =>
{
    app.ConfigureHttp(httpConfiguration =>
    {
        httpConfiguration.MapHttpAttributeRoutes();
        httpConfiguration.Formatters.Clear();
        httpConfiguration.Formatters.Add(new JsonMediaTypeFormatter());

        var jsonSettings = httpConfiguration.Formatters.JsonFormatter.SerializerSettings;
        jsonSettings.Formatting = Formatting.Indented;
        jsonSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
    });
});

If you want to bind any OWIN app/middleware other than WebAPI, you can do so by accessing the IAppBuilder instance directly, e.g.:

s.OwinEndpoint(app =>
{
    app.ConfigureAppBuilder(appBuilder => appBuilder.UseNancy());
});