pjfanning commented on code in PR #1264:
URL: https://github.com/apache/pekko-http/pull/1264#discussion_r3995967227
##########
http2-tests/src/test/scala/org/apache/pekko/http/impl/engine/http2/Http2ServerSpec.scala:
##########
@@ -657,6 +669,10 @@ class Http2ServerSpec extends Http2SpecWithMaterializer("""
})
"fail if more data is received than stream-level window
allows".inAssertAllStagesStopped(
new WaitingForRequestData {
+ // the single frame below is deliberately bigger than the
stream-level buffer, and so also bigger than the
+ // default max-frame-size; raise that limit so the frame reaches
the flow-control check this test is about
+ override def settings: ServerSettings =
super.settings.mapHttp2Settings(_.withMaxFrameSize(1024 * 1024))
Review Comment:
Good catch, thanks. Rebased onto main and added the same
`withMaxFrameSize(1024 * 1024)` override to that test in 7d5398ef2; both
instances of it pass now. PR body updated too.
##########
http-core/src/main/mima-filters/2.0.x.backwards.excludes/max-frame-size.excludes:
##########
@@ -0,0 +1,22 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# new max-frame-size setting
+ProblemFilters.exclude[ReversedMissingMethodProblem]("org.apache.pekko.http.javadsl.settings.Http2ClientSettings.maxFrameSize")
+ProblemFilters.exclude[ReversedMissingMethodProblem]("org.apache.pekko.http.javadsl.settings.Http2ServerSettings.withMaxFrameSize")
+ProblemFilters.exclude[ReversedMissingMethodProblem]("org.apache.pekko.http.scaladsl.settings.Http2ClientSettings.maxFrameSize")
+ProblemFilters.exclude[ReversedMissingMethodProblem]("org.apache.pekko.http.scaladsl.settings.Http2ServerSettings.maxFrameSize")
Review Comment:
Added both, and re-ran `sbt "+http-core/mimaReportBinaryIssues"` — clean on
2.13.18 and 3.3.8. The rebase also pulled in the 1.0.0 comparison from
`mima-1.2.0-additional-checks.excludes`, which flagged five more problems from
this PR (the replaced internal `Http2FrameParsing` constructor, the abstract
`Http2CommonSettings.maxFrameSize`, and three `copy$default$N` shifts from the
new case-class field). Those are filtered in the same file, same shape as the
`maxHeaderListSize` ones.
##########
http-core/src/main/resources/reference.conf:
##########
@@ -254,6 +254,20 @@ pekko.http {
# effective limit for a well-behaved peer is somewhat stricter than the
configured value.
max-header-list-size = 64 KiB
+ # The largest frame payload this endpoint accepts, in bytes. A larger
incoming frame is rejected with a
+ # FRAME_SIZE_ERROR on its frame header, before the payload is buffered,
so this bounds how much a single frame
+ # can make this endpoint hold at once. The length field of a frame
header allows up to 16 MiB - 1.
+ #
+ # This is a limit, not an invitation: no larger SETTINGS_MAX_FRAME_SIZE
is advertised, so a peer that follows
+ # the spec keeps to the 16 KiB default of RFC 9113, section 4.2 and the
extra room here is only leniency for
+ # peers that do not. Advertising a value far above the initial 64 KiB
flow-control window would invite frames
+ # that cannot be received without breaking flow control anyway.
+ #
+ # RFC 9113, section 4.2 constrains this to be between 16 KiB and 16 MiB
- 1. The amount of request data
+ # buffered overall is bounded separately by the
incoming-connection-level-buffer-size and
+ # incoming-stream-level-buffer-size settings above.
Review Comment:
Fixed in both blocks.
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