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markt pushed a commit to branch 9.0.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git


The following commit(s) were added to refs/heads/9.0.x by this push:
     new f69662e  Ensure the overhead check runs after every frame
f69662e is described below

commit f69662e539fde0a94ab36933676ac58c07911672
Author: Mark Thomas <[email protected]>
AuthorDate: Tue Sep 8 22:29:07 2020 +0100

    Ensure the overhead check runs after every frame
---
 .../apache/coyote/http2/Http2UpgradeHandler.java   | 11 +++++----
 test/org/apache/coyote/http2/TestHttp2Limits.java  | 27 ++++++++++++++++++++++
 webapps/docs/changelog.xml                         |  4 ++++
 3 files changed, 37 insertions(+), 5 deletions(-)

diff --git a/java/org/apache/coyote/http2/Http2UpgradeHandler.java 
b/java/org/apache/coyote/http2/Http2UpgradeHandler.java
index e63f174..a1434bf 100644
--- a/java/org/apache/coyote/http2/Http2UpgradeHandler.java
+++ b/java/org/apache/coyote/http2/Http2UpgradeHandler.java
@@ -340,11 +340,12 @@ class Http2UpgradeHandler extends AbstractStream 
implements InternalHttpUpgradeH
                             } else {
                                 stream.close(se);
                             }
-                        }
-                        if (overheadCount.get() > 0) {
-                            throw new ConnectionException(
-                                    
sm.getString("upgradeHandler.tooMuchOverhead", connectionId),
-                                    Http2Error.ENHANCE_YOUR_CALM);
+                        } finally {
+                            if (overheadCount.get() > 0) {
+                                throw new ConnectionException(
+                                        
sm.getString("upgradeHandler.tooMuchOverhead", connectionId),
+                                        Http2Error.ENHANCE_YOUR_CALM);
+                            }
                         }
                     }
 
diff --git a/test/org/apache/coyote/http2/TestHttp2Limits.java 
b/test/org/apache/coyote/http2/TestHttp2Limits.java
index 97345a4..2fa0686 100644
--- a/test/org/apache/coyote/http2/TestHttp2Limits.java
+++ b/test/org/apache/coyote/http2/TestHttp2Limits.java
@@ -38,6 +38,33 @@ public class TestHttp2Limits extends Http2TestBase {
 
     private static final StringManager sm = 
StringManager.getManager(TestHttp2Limits.class);
 
+
+    @Test
+    public void testSettingsOverheadLimits() throws Exception {
+        http2Connect(false);
+
+        for (int i = 0; i < 100; i++) {
+            sendSettings(0, false);
+            parser.readFrame(true);
+            String trace = output.getTrace();
+            if (trace.equals("0-Settings-Ack\n")) {
+                // Test continues
+                output.clearTrace();
+            } else if (trace.startsWith("0-Goaway-[1]-[11]-[Connection [")) {
+                // Test passed
+                return;
+            } else {
+                // Test failed
+                Assert.fail("Unexpected output: " + output.getTrace());
+            }
+            Thread.sleep(100);
+        }
+
+        // Test failed
+        Assert.fail("Connection not closed down");
+    }
+
+
     @Test
     public void testHeaderLimits1x128() throws Exception {
         // Well within limits
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index 9c123f5..ecce19f 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -183,6 +183,10 @@
         closed HTTP/2 streams as they triggered multiple regressions in the 
form
         of <code>NullPointerException</code>s. (markt)
       </fix>
+      <fix>
+        Ensure that the HTTP/2 overhead protection check is performed after
+        each HTTP/2 frame is processed. (markt)
+      </fix>
     </changelog>
   </subsection>
   <subsection name="WebSocket">


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