Fix HTTPS httpx mocking in wrap_bio() plus regressions occurred

[Copilot]

What this MR fixes

This MR resolves async networking regressions introduced while fixing large-response behavior, and stabilizes HTTP/SSL mocking across httpx and aiohttp.

1) Large async response hang (test_async_case_high_number)

• Fixed a deadlock caused by writing large mocked responses directly into OS pipes.
• Introduced a hybrid pipe strategy:
  • small responses mirror bytes into pipes (legacy-compatible behavior),
  • large responses use bounded readiness signaling to avoid pipe-buffer blocking.
• Kept response payloads in shared in-memory buffers per address.

2) aiohttp SSL failures (test_aiohttp)

• Fixed ServerDisconnectedError / SSL read-loop instability by decoupling SSL reads from shared socket cursor state.
• MocketSSLSocket now keeps a private pending SSL read buffer snapshot after writes, so protocol reads are deterministic across runtimes.
• Preserved expected pre-write SSL probing behavior (SSLWantReadError before first write after handshake).

3) Multi-socket regression during full test run

• Fixed TypeError: 'NoneType' object cannot be interpreted as an integer in recv() when called via recv_into() with buffersize=None and pipe-backed reads.
• recv() now normalizes None to the socket default buffer size.

4) PyPy compatibility regression (BufferError)

• Fixed BufferError: Existing exports of data: object cannot be re-sized seen in true-send HTTP flows on PyPy.
• Root cause: BytesIO.getbuffer() exports remained active while later writes resized the buffer.
• Replaced resize-sensitive getbuffer() reads with getvalue()-based logic in socket buffering paths.

5) Coverage recovery for new logic

• Added targeted tests for:
  • shared per-address I/O behavior,
  • pipe-mode flags and reset behavior,
  • large-response readiness sentinel drain/resync path,
  • SSL read behavior around handshake/write ordering,
  • empty server_hostname handling in SSL bio wrapping,
  • getpeercert() fallback to Mocket._address when host/port are unset.

Result

• Local full test target passes (make test).
• Previously failing async paths (httpx high payload + aiohttp SSL flow) now pass consistently.
• PyPy-specific true-send path is stable again.
• Coverage remains high (overall 99%; mocket/socket.py and mocket/ssl/socket.py at 100%).
• Latest local run: 228 passed, 3 xfailed (+ tests/test_pook.py passed).

[Copilot]

Pull request overview

This PR adjusts Mocket’s fake SSLContext.wrap_bio() behavior to better match how HTTPS clients (notably httpx on Python 3.10) provide/expect server_hostname, and adds a focused regression test to ensure the SSL object reflects the currently connected Mocket address.

Changes:

• Decode server_hostname when it is passed as bytes (UTF-8 with replacement) so internal host handling stays string-based.
• When server_hostname is None, derive the host/port (and _address) from Mocket._address to preserve expected HTTPS behavior.
• Add a parametrized test covering bytes/str/None/empty/invalid-byte hostnames for wrap_bio().

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
tests/test_socket.py	Adds a regression test asserting wrap_bio() populates _host, _port, and _address consistently (including bytes hostname decoding).
mocket/ssl/context.py	Updates MocketSSLContext.wrap_bio() to normalize server_hostname and to use Mocket._address for host/port derivation.

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[codecov]

Codecov Report

❌ Patch coverage is 90.66667% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 98.09%. Comparing base (c5daccb) to head (2329887).

Files with missing lines	Patch %	Lines
mocket/socket.py	86.25%	11 Missing ⚠️
mocket/ssl/socket.py	92.59%	2 Missing ⚠️
mocket/ssl/context.py	92.85%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #324      +/-   ##
==========================================
- Coverage   99.06%   98.09%   -0.98%     
==========================================
  Files          22       22              
  Lines        1075     1207     +132     
==========================================
+ Hits         1065     1184     +119     
- Misses         10       23      +13     

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[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud