28624297691
75%

Ran 02 Jul 2026 10:03PM UTC

Jobs 1

Files 217

Run time 1min

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Committed 02 Jul 2026 10:00PM UTC coverage: 75.336% (-0.2%) from 75.486%

Build # 28624297691

Build Type

push

github

Committed by

bluca

Commit Message

Fix GSSAPI PUB/SUB subscription corruption on reconnection

Problem: When GSSAPI encryption is active, subscribe and cancel message
flags (msg_t::subscribe = 12, msg_t::cancel = 16) were not preserved
through the encode_message/decode_message round-trip.

encode_message() only captured the 'more' (bit 0) and 'command' (bit 1)
flags in the wire flags byte. The subscribe flag occupies bits 2-3
(value 12) and cancel occupies bit 4 (value 16) — both outside the
captured range, so they were silently zeroed on decoding.

After decode_message(), xpub_t::xread_activated() would not recognise
the arriving message as a subscribe or cancel command, causing
subscriptions to be silently dropped after reconnection (when
xhiccuped() re-sends cached subscriptions through the GSSAPI path).

Solution: Encode the subscribe flag into wire bit 2 (0x04) and the
cancel flag into wire bit 3 (0x08) in encode_message(), and restore
them via set_flags(msg_t::subscribe) / set_flags(msg_t::cancel) in
decode_message().

Coverage Stats

15132 of 20086 relevant lines covered (75.34%)

26482.96 hits per line

Coverage Regressions

Lines	Coverage	∆	File
79	0.0	0.0%	libzmq/src/gssapi_mechanism_base.cpp
12	80.56	-16.67%	libzmq/src/lb.cpp
6	86.65	-0.53%	libzmq/src/socket_base.cpp
6	73.68	-10.53%	libzmq/src/tipc_connecter.cpp

Jobs

ID	Job ID	Ran	Files	Coverage
1	28624297691.1	02 Jul 2026 10:03PM UTC	217	75.34	GitHub Action Run

zeromq / libzmq / 28624297691
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