change(esp-tls): Improve support for wolfssl (IDFGH-15505)

[gojimmypi]

Description

Improves support for wolfSSL in the ESP-IDF esp-tls component.

I realize that v5.5 is already in beta1 as of a few days ago. I'm hopeful that this update can be included.

Works best with wolfSSL v5.7.6 or later; v5.7.8 is better, more polish coming to master branch.

The wolfssl source code can also be set via WOLFSSL_ROOT via environment variable, cmake variable, or idf.py menuconfig.

See ESP Registry for wolfssl and other components in the wolfssl namespace.

For getting started, see:

• YouTube: Getting Started with wolfSSL for Espressif ESP32
• YouTube DevCon24 - Getting Started with wolfSSL encryption
• Blog: wolfSSL now available in Espressif Component Registry
• Other Espressif resources at wolfSSL
• wolfSSL Documentation
• wolfssl Espressif examples

Related

Recent esp-tls specific changes to wolfSSL:

• Add wolfSSL esp-tls and Certificate Bundle Support wolfSSL/wolfssl#7936
• Improve PlatformIO Certificate Bundle Support wolfSSL/wolfssl#8847

Overview:

• Improving wolfSSL integration with the Espressif ESP-IDF (IDFGH-13019) #13966
• Improving wolfSSL integration with the Espressif ESP-IDF wolfSSL/wolfssl#7640
• ESP32 Espressif Improvements - Roadmap Summary wolfSSL/wolfssl#6234

Also:

• Espressif Managed Component wolfSSL 5.7.4 post-release update wolfSSL/wolfssl#8251
• Introduce WOLFSSL_ASN_ALLOW_0_SERIAL wolfSSL/wolfssl#7893
• Tidy up Espressif ESP32 test and benchmark examples wolfSSL/wolfssl#5800

Testing

Tested with my slightly revised esp_http_client_example.

Note the problem references in:

• Example esp_http_client postman-echo example fails (IDFGH-15491) #16132
• The howsmyssl site does not fully support TLS 1.3 (IDFGH-13611) #14496

---

Checklist

Before submitting a Pull Request, please ensure the following:

• 🚨 This PR does not introduce breaking changes.
• All CI checks (GH Actions) pass.
• Documentation is updated as needed.
• Tests are updated or added as necessary.
• Code is well-commented, especially in complex areas.
• Git history is clean — commits are squashed to the minimum necessary.

[github-actions]

	Warnings
⚠️	The **target branch** for this Pull Request **must be the default branch** of the project (`master`). If you would like to add this feature to a different branch, please state this in the PR description and we will consider it.

👋 Hello gojimmypi, we appreciate your contribution to this project!

---

📘 Please review the project's Contributions Guide for key guidelines on code, documentation, testing, and more.

---

🖊️ Please also make sure you have read and signed the Contributor License Agreement for this project.

---

Click to see more instructions ...

This automated output is generated by the PR linter DangerJS, which checks if your Pull Request meets the project's requirements and helps you fix potential issues.

DangerJS is triggered with each push event to a Pull Request and modify the contents of this comment.

Please consider the following:
- Danger mainly focuses on the PR structure and formatting and can't understand the meaning behind your code or changes.
- Danger is not a substitute for human code reviews; it's still important to request a code review from your colleagues.
- Resolve all warnings (⚠️ ) before requesting a review from human reviewers - they will appreciate it.
- To manually retry these Danger checks, please navigate to the Actions tab and re-run last Danger workflow.

Review and merge process you can expect ...

We do welcome contributions in the form of bug reports, feature requests and pull requests via this public GitHub repository.

This GitHub project is public mirror of our internal git repository

1. An internal issue has been created for the PR, we assign it to the relevant engineer.
2. They review the PR and either approve it or ask you for changes or clarifications.
3. Once the GitHub PR is approved, we synchronize it into our internal git repository.
4. In the internal git repository we do the final review, collect approvals from core owners and make sure all the automated tests are passing.
- At this point we may do some adjustments to the proposed change, or extend it by adding tests or documentation.
5. If the change is approved and passes the tests it is merged into the default branch.
5. On next sync from the internal git repository merged change will appear in this public GitHub repository.

Generated by 🚫 dangerJS against 5697a4c