System.Net.Http.Handlers 

Simple progress tracking for HttpClient via DelegatingHandler.

This package is based on the original ProgressMessageHandler from ASP.NET Web Stack (System.Net.Http.Handlers) and adapts the same idea for modern .NET. The original source lives in the aspnet/AspNetWebStack repository.

Install

dotnet add package RoccoZero.System.Net.Http.Handlers

var progressMessageHandler = new ProgressMessageHandler(new HttpClientHandler());

progressMessageHandler.HttpSendProgress += (_, e) =>
{
    if (e.TotalBytes.HasValue && e.TotalBytes.Value > 0)
    {
        var percent = (double)e.BytesTransferred / e.TotalBytes.Value * 100;
        Console.WriteLine($"Upload: {percent:F2}%");
    }
    else
    {
        Console.WriteLine($"Upload: {e.BytesTransferred} bytes");
    }
};

progressMessageHandler.HttpReceiveProgress += (_, e) =>
{
    if (e.TotalBytes.HasValue && e.TotalBytes.Value > 0)
    {
        var percent = (double)e.BytesTransferred / e.TotalBytes.Value * 100;
        Console.WriteLine($"Download: {percent:F2}%");
    }
    else
    {
        Console.WriteLine($"Download: {e.BytesTransferred} bytes");
    }
};

using var httpClient = new HttpClient(progressMessageHandler);
using var response = await httpClient.GetAsync(
    "https://builds.dotnet.microsoft.com/dotnet/Sdk/10.0.202/dotnet-sdk-10.0.202-win-x64.exe");

response.EnsureSuccessStatusCode();

Why

• No manual stream wrapping
• Upload + download progress
• Works directly with HttpClient
• Clean and reusable