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When a peer sends GOAWAY(NO_ERROR), lib/internal/http2/core.js calls session.close(), which sets both graceful_close_initiated_ and goaway_initiated_. Those flags can be set without any application code and, once set, are never reset, so they permanently disarmed the detector that tears down the session when nghttp2 internally terminates it after a protocol error (e.g. an oversized frame). The detector now compares the GOAWAY error code against the code this session requested through session.goaway()/session.close(). A peer-triggered graceful close submits GOAWAY(NO_ERROR); if nghttp2 later emits a frame carrying a different error code it was not requested by us, which indicates an internal termination. In that case the session is torn down and the resulting error is surfaced, as it would be without the prior peer GOAWAY. Assisted-by: pi Signed-off-by: Matteo Collina <hello@matteocollina.com>
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When a peer sends GOAWAY(NO_ERROR), core.js calls session.close(), which
sets both
graceful_close_initiated_andgoaway_initiated_. Those flagscan be set without any application code, and once set are never reset, so
they could permanently disarm the detector that tears down the session when
nghttp2 internally terminates it after a protocol error (for example an
oversized frame).
This makes the detector compare the GOAWAY error code against the code the
session requested through
session.goaway()/session.close(). Apeer-triggered graceful close submits GOAWAY(NO_ERROR); if nghttp2 later
emits a frame carrying a different error code it was not requested by us,
which indicates an internal termination. In that case the session is torn
down and the resulting error is surfaced, as it would be without the prior
peer GOAWAY.
Defense-in-depth hardening; no test is included because the triggering
scenario is not reproducibly exercised by the default build.