Meziantou.Framework.Http.ServerSideRequestForgery 1.0.0

Prefix Reserved
.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. 
dotnet add package Meziantou.Framework.Http.ServerSideRequestForgery --version 1.0.0
                    


                    

                
NuGet\Install-Package Meziantou.Framework.Http.ServerSideRequestForgery -Version 1.0.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Meziantou.Framework.Http.ServerSideRequestForgery" Version="1.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Meziantou.Framework.Http.ServerSideRequestForgery" Version="1.0.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Meziantou.Framework.Http.ServerSideRequestForgery" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Meziantou.Framework.Http.ServerSideRequestForgery --version 1.0.0
                    


                    

                
#r "nuget: Meziantou.Framework.Http.ServerSideRequestForgery, 1.0.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Meziantou.Framework.Http.ServerSideRequestForgery@1.0.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Meziantou.Framework.Http.ServerSideRequestForgery&version=1.0.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Meziantou.Framework.Http.ServerSideRequestForgery&version=1.0.0
                    


                            Install as a Cake Tool

Meziantou.Framework.Http.ServerSideRequestForgery

SSRF protection for SocketsHttpHandler using scheme allow-listing and runtime IP validation.

Usage

using Meziantou.Framework.Http.ServerSideRequestForgery;

var options = new ServerSideRequestForgeryOptions
{
    ResolutionStrategy = IpAddressResolutionStrategy.PreferIpv4,
    DisallowMixedSafeAndUnsafeIpAddresses = true,
};

options.SafeSchemes.Add("https");
options.SafeSchemes.Add("wss");
options.UnsafeIpNetworks.Add(IPNetwork.Parse("203.0.113.0/24"));
options.SafeIpNetworks.Add(IPNetwork.Parse("198.51.100.10/32"));

var handler = new SocketsHttpHandler();
handler.ConfigureSsrf(options);

using var httpClient = new HttpClient(handler, disposeHandler: true);

Behavior

  • Validates request scheme against SafeSchemes.
  • Resolves DNS on every connection attempt to avoid TOCTOU vulnerabilities.
  • Validates each resolved address against UnsafeIpNetworks and SafeIpNetworks.
  • Optionally rejects mixed safe/unsafe DNS responses.
  • Uses IpAddressResolutionStrategy to select the final address (Ipv4Only, Ipv6Only, PreferIpv4, Random, RoundRobin).
Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
1.0.0 77 5/18/2026