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GenHTTP Webserver

GenHTTP is a lightweight web server written in pure C# with a strong focus on developer experience. The main purpose of this project is to quickly create web services written in .NET 8 / 9, allowing developers to concentrate on the functionality rather than on messing around with configuration files or complex concepts.

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🚀 Features

📖 Getting Started

This section shows how to create a new project from scratch using project templates and how to extend your existing application by embedding the GenHTTP engine.

[!NOTE]
This is a brief overview to get you running. You might want to have a look at the tutorials for detailed step-by-step guides.

New Project

Project templates can be used to create apps for typical use cases with little effort. After installing the .NET SDK and the templates via dotnet new -i GenHTTP.Templates in the terminal, the templates are available via the console or directly in Visual Studio:

<img src="https://user-images.githubusercontent.com/4992119/146939721-2970d28c-61bc-4a9a-b924-d483f97c8d8e.png" style="width: 30em;" />

To create a project by using the terminal, create a new folder for your app and use one of the following commands:

TemplateCommandDocumentation
REST Webservicedotnet new genhttp-webserviceWebservices
REST Webservice (single file)dotnet new genhttp-webservice-minimalFunctional Handlers
REST Webservice (controllers)dotnet new genhttp-webservice-controllersControllers
Websocketdotnet new genhttp-websocketWebsockets
Website (Static HTML)dotnet new genhttp-website-staticStatics Websites
Single Page Application (SPA)dotnet new genhttp-spaSingle Page Applications (SPA)

After the project has been created, you can run it via dotnet run and access the server via http://localhost:8080.

Extending Existing Apps

If you would like to extend an existing .NET application, just add a nuget reference to the GenHTTP.Core nuget package. You can then spawn a new server instance with just a few lines of code:

var content = Content.From(Resource.FromString("Hello World!"));

var host = await Host.Create()
                     .Handler(content)
                     .Defaults()
                     .StartAsync(); // or .RunAsync() to block until the application is shut down

When you run this sample it can be accessed in the browser via http://localhost:8080.

Next Steps

The documentation provides a step-by-step starting guide as well as additional information on how to implement webservices, minimal webservices, controller-based webservices, static websites, or single page applications and how to host your application via Docker.

If you encounter issues implementing your application, feel free to join our Discord community to get help.

⚙️ Building the Server

To build the server from source, clone this repository and run the playground project launcher for .NET 9:

git clone https://github.com/Kaliumhexacyanoferrat/GenHTTP.git
cd ./GenHTTP/Playground
dotnet run

This will build the playground project launcher with all the server dependencies and launch the server process on port 8080. You can access the playground in the browser via http://localhost:8080.

🙌 Contributing

Writing a general purpose web application server is a tremendous task, so any contribution is very welcome. Besides extending the server core, you might want to

If you would like to contribute, please also have a look at the contribution guidelines and the good first issues.

🏺 History

The web server was originally developed in 2008 to run on a netbook with an Intel Atom processor. Both IIS and Apache failed to render dynamic pages on such a slow CPU back then. The original project description can still be found on archive.org. In 2019, the source code has been moved to GitHub with the goal to rework the project to be able to run dockerized web applications written in C#. In 2024 the focus has shifted towards API development, dropping support for generating graphical web applications.

📌 Links

🙏 Thanks