From a12e64da94e0d33fab15d343b798c0d33aba4ac3 Mon Sep 17 00:00:00 2001
From: Philippe Antoine <pantoine@oisf.net>
Date: Wed, 14 Oct 2026 10:38:03 +0200
Subject: [PATCH] http2: do not update progress on END_STREAM without
 END_HEADERS

As more continuation frames are expected.
Next commit will update progress for those continuation frames.

Ticket: 9217

Backport note: Gate the existing 8.0.x transaction-state transition on
END_HEADERS for HEADERS frames, preserving DATA and half-closed handling
instead of importing main's per-direction progress state machines.

(cherry picked from commit ef7184012a25f3e38da64e377d63ddbaef40b527)
---
 rust/src/http2/http2.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/rust/src/http2/http2.rs b/rust/src/http2/http2.rs
index fbc8671e8b..4254e1f36e 100644
--- a/rust/src/http2/http2.rs
+++ b/rust/src/http2/http2.rs
@@ -432,7 +432,10 @@ impl HTTP2Transaction {
         //handle closing state changes
         match data {
             HTTP2FrameTypeData::HEADERS(_) | HTTP2FrameTypeData::DATA => {
-                if header.flags & parser::HTTP2_FLAG_HEADER_EOS != 0 {
+                if header.flags & parser::HTTP2_FLAG_HEADER_EOS != 0
+                    && (!matches!(data, HTTP2FrameTypeData::HEADERS(_))
+                        || header.flags & parser::HTTP2_FLAG_HEADER_END_HEADERS != 0)
+                {
                     match self.state {
                         HTTP2TransactionState::HTTP2StateHalfClosedClient
                         | HTTP2TransactionState::HTTP2StateDataServer => {