[tomcat] branch 9.0.x updated: Fixing flow control for zero length padding introduced an edge case

[markt]

This is an automated email from the ASF dual-hosted git repository.

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 7edcee8  Fixing flow control for zero length padding introduced an 
edge case
7edcee8 is described below

commit 7edcee86dc34faa00cf831bb39ced3a9c59af369
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Mon Sep 7 15:30:41 2020 +0100

    Fixing flow control for zero length padding introduced an edge case
    
    Again, spotted by Travis CI
---
 test/org/apache/coyote/http2/TestCancelledUpload.java | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/test/org/apache/coyote/http2/TestCancelledUpload.java 
b/test/org/apache/coyote/http2/TestCancelledUpload.java
index fa798c1..2a5b762 100644
--- a/test/org/apache/coyote/http2/TestCancelledUpload.java
+++ b/test/org/apache/coyote/http2/TestCancelledUpload.java
@@ -78,12 +78,16 @@ public class TestCancelledUpload extends Http2TestBase {
             return;
         }
 
-        // Validate any WindowSize frames (always arrive in pairs)
+        // Validate any WindowSize frames. Usually arrive in pairs. Depending 
on
+        // timing, can see a reset rather than than stream update.
         while (output.getTrace().startsWith("0-WindowSize-[")) {
             String trace = output.getTrace();
             int size = Integer.parseInt(trace.substring(14, trace.length() - 
2));
             output.clearTrace();
             parser.readFrame(true);
+            if (output.getTrace().startsWith("3-RST-[3]\n")) {
+                return;
+            }
             Assert.assertEquals("3-WindowSize-[" + size + "]\n", 
output.getTrace());
             output.clearTrace();
             parser.readFrame(true);
@@ -118,13 +122,19 @@ public class TestCancelledUpload extends Http2TestBase {
         // There must be a reset. There may be some WindowSize frames
         parser.readFrame(true);
 
-        // Validate any WindowSize frames (always arrive in pairs)
+        // Validate any WindowSize frames. Usually arrive in pairs. Depending 
on
+        // timing, can see a reset rather than than stream update.
         while (output.getTrace().startsWith("0-WindowSize-[")) {
             String trace = output.getTrace();
             int size = Integer.parseInt(trace.substring(14, trace.length() - 
2));
             output.clearTrace();
             parser.readFrame(true);
+            if (output.getTrace().startsWith("3-RST-[3]\n")) {
+                return;
+            }
             Assert.assertEquals("3-WindowSize-[" + size + "]\n", 
output.getTrace());
+            output.clearTrace();
+            parser.readFrame(true);
         }
 
         // This should be the reset


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