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Carry the source fix from cilium#2064 onto the exact proxy revision pinned by Cilium 1.20.2 for isolated image testing. Signed-off-by: Veshant Chettiar <veshantc@gmail.com>
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October 5, 2026 05:48
Skip the same-tuple connection-close comparison when a local response has upstream information without established socket addresses. Signed-off-by: Veshant Chettiar <veshantc@gmail.com>
Exercise absent upstream socket addresses and preserve connection draining for matching tuples. Signed-off-by: Veshant Chettiar <veshantc@gmail.com>
Signed-off-by: Veshant Chettiar <veshantc@gmail.com>
Signed-off-by: Veshant Chettiar <veshantc@gmail.com>
Signed-off-by: Veshant Chettiar <veshantc@gmail.com>
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Thanks for your contribution :-) Please squash commits into one, we do not do that automatically on merge and the commit-to-commit churn is not needed in the git history. I'll have a 2nd look when that is done.
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A local HTTP reply can carry upstream info before an upstream socket has established local and remote addresses. When the reply includes
Connection: close,AccessFilter::encodeHeaders()dereferences those addresses while comparing the upstream and downstream socket tuples, which can crash Envoy.Guard that comparison until all four addresses are present. The existing downstream-drain behavior remains for matching socket tuples. Add regression cases for missing upstream addresses (both or either one), matching addresses, and nonmatching addresses.
Fixes #2063.
Validation:
clang-format18.1.8 passed with--dry-run --Werror, andgit diff --checkpassed. The C++ unit test could not be run locally because Docker BuildKit storage became read-only before compilation; CI should confirm compilation and behavior.