CODE EXAMPLE FOR CSHARP

asp.net Read raw Body

app.Use(async (context, next) =>
{
    var initialBody = context.Request.Body;

    using (var bodyReader = new StreamReader(context.Request.Body))
    {
        string body = await bodyReader.ReadToEndAsync();
        Console.WriteLine(body);
        context.Request.Body = new MemoryStream(Encoding.UTF8.GetBytes(body));
        await next.Invoke();
        context.Request.Body = initialBody;
    }
});