Dmitry Tantsur aa0348678b Fix local RPC IPv6 detection to use socket binding instead of file checks ...

The local RPC code previously checked for IPv6 availability by examining
the existence of /proc/sys/net/ipv6/conf/lo/disable_ipv6 and reading its
contents. This approach was unreliable as it depended on filesystem
checks rather than testing actual IPv6 functionality.

The fix replaces the file-based check with an actual socket binding test
to ::1 using a context manager for proper resource management. Socket
reuse is enabled to prevent port conflicts. Debug logging is added when
IPv6 is unavailable. Unit tests are updated to provide comprehensive
coverage of the new implementation.

Change-Id: I1e3afabc78f1382ff5248707ff2ca8114d10dd90
Generated-By: Claude Code Sonnet 4
Signed-off-by: Dmitry Tantsur <dtantsur@protonmail.com>

2025-08-06 16:57:15 +02:00

3.8 KiB

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