feat: add IP prioritization hints for HTTP/1.1 and HTTP/2

[amyssnippet]

This relates to...

IP Prioritization support for HTTP/1.1 and HTTP/2 requests.

Rationale

This PR introduces the ability to set IP-level prioritization hints for requests. This is particularly useful for applications running in environments that utilize Quality of Service (QoS) markings or differentiated services (DiffServ) at the network layer, allowing for fine-grained control over packet priority directly from the HTTP client.

Changes

• lib/core/request.js: Updated the Request constructor to accept a hints option (validated as a number).
• lib/dispatcher/client-h1.js: Updated the HTTP/1.1 dispatcher to apply the hints value to the socket using socket.setPriority() if available.
• lib/core/connect.js: Verified that hints are passed through buildConnector to net.connect options.
• types/dispatcher.d.ts & types/connector.d.ts: Added TypeScript definitions for the hints option.
• test/ip-prioritization.js: Added new tests to verify:
  • socket.setPriority is called with the correct value for HTTP/1.1.
  • hints are correctly passed to the connection options (net.connect) for HTTP/2.

Features

• Added support for hints in DispatchOptions to set IP prioritization.
• Supported for both HTTP/1.1 (per-request via socket.setPriority) and HTTP/2 (per-connection via connect options).

Bug Fixes

N/A

Breaking Changes and Deprecations

N/A

Status

• I have read and agreed to the Developer's Certificate of Origin
• Tested
• Benchmarked (optional)
• Documented
• Review ready
• In review
• Merge ready

[amyssnippet]

@ronag , after the merge of the nodejs/node#61503 , i saw this reference and i thought to contribute here too.
kindly review the changes

[metcoder95]

Is not the same API as the one added in the upstream PR

[Uzlopak]

hints is imho a too generic term. We should need a more specific term.
If I understand you correctly you want to pass the value down as typeOfService

So i guess hints has to be renamed to typeOfService and setPriority to setTypeOfService ?

Also typeOfService has to be a number between 0 and 255?

I

[amyssnippet]

hints is imho a too generic term. We should need a more specific term. If I understand you correctly you want to pass the value down as typeOfService

So i guess hints has to be renamed to typeOfService and setPriority to setTypeOfService ?

Also typeOfService has to be a number between 0 and 255?

I

i renamed all of them

[codecov-commenter]

Codecov Report

❌ Patch coverage is 84.61538% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.15%. Comparing base (0a23610) to head (dd508fd).
⚠️ Report is 35 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/core/request.js	75.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4831      +/-   ##
==========================================
- Coverage   93.19%   93.15%   -0.04%     
==========================================
  Files         109      109              
  Lines       34222    34254      +32     
==========================================
+ Hits        31893    31911      +18     
- Misses       2329     2343      +14     

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[amyssnippet]

the test failure is flaky, and i have a question, is this pr will be automerged when all ci checks passes? is yes then what about this flaky test? what should i do next, pls guide!

[amyssnippet]

@ronag @metcoder95

stale

[mcollina]

lgtm