This library provides a C# reference implementation for a Windows Update server writtent as a ASP.NET web app.

Requirements

Updates must be fetched from an upstream server and indexed before they can be served to Windows clients.

Use the Server-Server Sync library to aquire updates.

A pre-built tool to fetch and index updates is available: UpSync

The reference UpdateServerStartup

Use UpdateServerStartup to add all the required update services to your ASP.NET instance.

Prerequisites:

• updates were fetched to a file named master.zip
• content was downloaded to .\content
• the server configuration JSON is in server_configuration.json
• the server address is http://my_update_server

var host = new WebHostBuilder()
    .UseUrls(@"http://my_update_server")
    .UseStartup<UpdateServerStartup>()
    .UseKestrel()
    .ConfigureKestrel((context, opts) => { })
    .ConfigureAppConfiguration((hostingContext, config) =>
    {
        var configDictionary = new Dictionary<string, string>()
        {
            { "metadata-source", @"master.zip" },
            { "server-config", @"server_configuration.json"},
            { "content-source", @".\content" },
            { "content-http-root", @"http://my_update_server" }
        };
        config.AddInMemoryCollection(configDictionary);
    })
    .Build();

host.Run();

If your server does not store update content, just metadata, then "content-source" and "content-http-root" settings can be null. In this case, Windows clients will download content from the official Microsoft Update content servers.