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381d8137e3
Properly handle a STREAM frame with no data but the FIN bit set at the application layer. H3 and hq-interop decode_qcs() callback have been adjusted to not return early in this case. If the FIN bit is accepted, a HTX EOM must be inserted for the upper stream layer. If the FIN is rejected because the stream cannot be closed, a proper CONNECTION_CLOSE error will be triggered. A new utility function qcs_http_handle_standalone_fin() has been implemented in the qmux_http module. This allows to simply add the HTX EOM on qcs HTX buffer. If the HTX buffer is empty, a EOT is first added to ensure it will be transmitted above. This commit will allow to properly handle FIN notify through an empty STREAM frame. However, it is not sufficient as currently qcc_recv() skip the decode_qcs() invocation when the offset is already received. This will be fixed in the next commit. This should be backported up to 2.6 along with the next patch.