Improved support on Windows platforms with differing IPv4/IPv6 support

[wkbrd]

Improved support on Windows platforms with differing IPv4/IPv6 support, including over network segments. It was found that on Windows sometimes IPv4 traffic would not connect due to the results of name lookups.

This change corrects this behavior and we have been utilizing the same patched files on both Windows and Linux.

Summary by CodeRabbit

• New Features
  • Enhanced network address resolution now gracefully evaluates multiple address options, providing improved connectivity.
  • Improved support for Windows ensures smoother, more compatible network operations.

[wkbrd]

Hi @jwillemsen, what is the process for having this pull request be considered? Does the code complexity (CodeFactor) need to be addressed or can it be accepted by a project team member's review?

[iguessthislldo]

The complex method complaint is normal and personally I think it's being over zealous in this case since the function is only about 120 lines long, although it's probably counting the possible code paths. As for acceptance, it's not directly based on what checks are saying, someone who with free time will have to review it.

[jwillemsen]

Acceptance requires a detailed review which depens on available time. Also the person who merges a PR implicitly commits to check all builds to watch for any regression. All together it takes several hours for one PR, see also https://htmlpreview.github.io/?https://github.com/DOCGroup/ACE_TAO/blob/master/ACE/docs/ACE-bug-process.html

[coderabbitai]

Walkthrough

The changes modify the address resolution logic in the ACE_INET_Addr::set methods. The update replaces a single-pass loop with a two-pass approach, enabling the method to first check for addresses matching the specified family and then consider alternative families if needed. Additionally, the assignment of hints.ai_family is now conditionally set to AF_UNSPEC on Windows, ensuring better cross-platform compatibility. The method signatures remain unchanged.

Changes

File Path	Change Summary
ACE/ace/INET_Addr.cpp	Modified ACE_INET_Addr::set logic: replaced single-pass address loop with a two-pass algorithm checking same family then alternatives; conditional Windows fix for hints.ai_family assignment.

Sequence Diagram(s)

sequenceDiagram
    participant Caller
    participant ACE_INET_Addr
    Note over ACE_INET_Addr: First pass: Check addresses matching specified family.
    Caller->>ACE_INET_Addr: set(address, address_family)
    ACE_INET_Addr->>ACE_INET_Addr: Loop through address info (first pass)
    alt Matching address found
        ACE_INET_Addr->>Caller: Return success with matching address
    else No matching address found
        Note over ACE_INET_Addr: Second pass: Check alternative families.
        ACE_INET_Addr->>ACE_INET_Addr: Loop through address info (second pass)
        ACE_INET_Addr->>Caller: Return success or failure based on alternative match
    end

Loading

Poem

In a burrow of code so deep,
I hopped along without a peep.
First, I scanned for family true,
Then ventured out for something new.
Oh, code carrots so crisp and fun,
A rabbit’s joy when changes are done!
🥕🐇

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Reviewing files that changed from the base of the PR and between 6c3ca3f and 778724c.

📒 Files selected for processing (1)

• ACE/ace/INET_Addr.cpp (2 hunks)

⏰ Context from checks skipped due to timeout of 90000ms (20)

• GitHub Check: ubuntu-20.04 g++-10 CodeQL
• GitHub Check: ubuntu-20.04 g++-10 ACE for TAO
• GitHub Check: ubuntu-20.04 g++-10 CORBA/e compact
• GitHub Check: ubuntu-20.04 g++-10 CORBA/e micro
• GitHub Check: ubuntu-22.04 clang++-16
• GitHub Check: ubuntu-22.04 clang++-15
• GitHub Check: ubuntu-22.04 clang++-14
• GitHub Check: ubuntu-20.04 clang++-13
• GitHub Check: ubuntu-20.04 clang++-12
• GitHub Check: ubuntu-20.04 clang++-11
• GitHub Check: ubuntu-20.04 clang++-10
• GitHub Check: ubuntu-20.04 clang++-9
• GitHub Check: ubuntu-20.04 clang++-8
• GitHub Check: VS2022Debug64
• GitHub Check: ubuntu-20.04 clang++-7
• GitHub Check: ubuntu-20.04 clang++-6.0
• GitHub Check: ubuntu-22.04 g++-12
• GitHub Check: ubuntu-22.04 g++-11
• GitHub Check: ubuntu-20.04 g++-10
• GitHub Check: alpine-3.18

🔇 Additional comments (2)

ACE/ace/INET_Addr.cpp (2)

398-402: LGTM! Platform-specific handling for Windows address family selection.

The conditional setting of hints.ai_family to AF_UNSPEC on Windows while using the provided address_family on other platforms is a good approach to handle Windows-specific IPv4/IPv6 connectivity issues.

---

433-453: LGTM! Robust two-pass approach for address resolution.

The implementation of a two-pass approach for processing address information is well-structured and provides better handling of IPv4/IPv6 addresses by:

1. Prioritizing addresses that match the requested family in the first pass
2. Considering alternative address families in the second pass
3. Correctly updating the address family when a matching one is found

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• 📝 Generate Docstrings (Beta)

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