Library (embed)

NuGet package Titanium.Web.Proxy (MIT). Target framework: .NET 10.

dotnet add package Titanium.Web.Proxy

Explicit MITM proxy

using System.Net;
using Titanium.Web.Proxy;
using Titanium.Web.Proxy.Models;

using var proxyServer = new ProxyServer();
proxyServer.BeforeRequest += async (sender, e) =>
{
    // Inspect or rewrite e.HttpClient.Request
};

var endPoint = new ExplicitProxyEndPoint(IPAddress.Loopback, 8000, decryptSsl: true);
proxyServer.AddEndPoint(endPoint);
proxyServer.CertificateManager.EnsureRootCertificate(
    userTrustRootCertificate: true,
    machineTrustRootCertificate: false);
proxyServer.Start();

Capabilities

• Intercept, modify, redirect, or block HTTP and HTTPS
• Explicit, transparent, and SOCKS4/5 endpoints
• HTTP/2 on by default (ProxyServer.EnableHttp2); HTTP/3 opt-in (EnableHttp3, experimental TWP001)
• Upstream HTTP/HTTPS/SOCKS + system proxy detection
• Proxy auth, mTLS, Kerberos, NTLM
• Connection, certificate, and buffer pooling
• Built-in async logging and opt-in request timing

Reverse proxy

Use ForwardHost on a transparent endpoint for a zero-cost terminate-lite path, or declarative routes/clusters (also used by the CLI). See Configuration and Protocol support.

API reference

• ProxyServer
• Full API tree under /api/

Examples in the repo

• examples/Titanium.Web.Proxy.Examples.Basic
• examples/Titanium.Web.Proxy.Examples.Wpf
• examples/Titanium.Web.Proxy.Examples.WindowsService