OpenAPITools / OpenAPITools/openapi-generator

[REQ] Support using System.Net.Http.SocketsHttpHandler in csharp with the httpclient library

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Enhancement: Feature
Dominant language
Java
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Description

Is your feature request related to a problem? Please describe.

Newer .NET versions have a new default handler for HttpClient: System.Net.Http.SocketsHttpHandler, but the current csharp client uses HttpClientHandler, it would be nice to support using the newer SocketsHttpHandler when available or as a separate library template.

Describe the solution you'd like

Support using SocketsHttpHandler in the csharp and httpclient library generator.

Describe alternatives you've considered

Modify the templates locally by myself.

Additional context

https://learn.microsoft.com/en-us/dotnet/api/system.net.http.socketshttphandler?view=net-8.0

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the C# httpclient library generator templates and the existing HttpClientHandler usage. Review how handler choices are exposed in generated clients; done means the generator supports SocketsHttpHandler when available or provides a separate template, with appropriate coverage for the selected approach.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
tooling
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

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