fix(socketcan): support socket file descriptors over 1023#2057
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select.select() is limited by glibc's FD_SETSIZE (1024) and raises ValueError for higher fds even when the OS limit allows them. Switch SocketcanBus._recv_internal() and send() to select.poll(), which has no such limit. Fixes hardbyte#2053. Signed-off-by: SAY-5 <say.apm35@gmail.com>
Signed-off-by: SAY-5 <say.apm35@gmail.com>
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Summary of Changes
SocketcanBus._recv_internal()andsend()fromselect.select()toselect.poll().test/test_socketcan_high_fd.py(Linux-only) covering send/recv with a mocked socket whose fd is 2048.Related Issues / Pull Requests
SocketcanBusdoes not support socket file descriptors over 1023 #2053Type of Change
Checklist
tox).Additional Notes
select.select()is limited by glibc'sFD_SETSIZE(1024) and raisesValueError: filedescriptor out of range in select()for higher fds even when the OS limit allows them.select.poll()has no such limit and returns equivalent readiness data. The change is internal toSocketcanBus; the public send/recv signatures and exception semantics are unchanged.