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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 9a02316 Fix BZ 64467. Improve performance of closing idle streams
9a02316 is described below
commit 9a0231683a77e2957cea0fdee88b193b30b0c976
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Fri May 22 11:27:49 2020 +0100
Fix BZ 64467. Improve performance of closing idle streams
---
.../apache/coyote/http2/Http2UpgradeHandler.java | 10 +++----
.../apache/coyote/http2/TestHttp2Section_5_1.java | 31 +++++++++++++++++++---
webapps/docs/changelog.xml | 4 +++
3 files changed, 36 insertions(+), 9 deletions(-)
diff --git a/java/org/apache/coyote/http2/Http2UpgradeHandler.java
b/java/org/apache/coyote/http2/Http2UpgradeHandler.java
index bd83694..f0d5f27 100644
--- a/java/org/apache/coyote/http2/Http2UpgradeHandler.java
+++ b/java/org/apache/coyote/http2/Http2UpgradeHandler.java
@@ -1473,11 +1473,11 @@ class Http2UpgradeHandler extends AbstractStream
implements InternalHttpUpgradeH
}
- private void closeIdleStreams(int newMaxActiveRemoteStreamId) throws
Http2Exception {
- for (int i = maxActiveRemoteStreamId + 2; i <
newMaxActiveRemoteStreamId; i += 2) {
- Stream stream = getStream(i, false);
- if (stream != null) {
- stream.closeIfIdle();
+ private void closeIdleStreams(int newMaxActiveRemoteStreamId) {
+ for (Entry<Integer,Stream> entry : streams.entrySet()) {
+ if (entry.getKey().intValue() > maxActiveRemoteStreamId &&
+ entry.getKey().intValue() < newMaxActiveRemoteStreamId) {
+ entry.getValue().closeIfIdle();
}
}
maxActiveRemoteStreamId = newMaxActiveRemoteStreamId;
diff --git a/test/org/apache/coyote/http2/TestHttp2Section_5_1.java
b/test/org/apache/coyote/http2/TestHttp2Section_5_1.java
index 2a46681..f878653 100644
--- a/test/org/apache/coyote/http2/TestHttp2Section_5_1.java
+++ b/test/org/apache/coyote/http2/TestHttp2Section_5_1.java
@@ -147,21 +147,44 @@ public class TestHttp2Section_5_1 extends Http2TestBase {
@Test
public void testImplicitClose() throws Exception {
+ doTestImplicitClose(5);
+ }
+
+
+ // https://bz.apache.org/bugzilla/show_bug.cgi?id=64467
+ @Test
+ public void testImplicitCloseLargeId() throws Exception {
+ doTestImplicitClose(Integer.MAX_VALUE - 8);
+ }
+
+
+ private void doTestImplicitClose(int lastStreamId) throws Exception {
+
+ long startFirst = System.nanoTime();
http2Connect();
+ long durationFirst = System.nanoTime() - startFirst;
sendPriority(3, 0, 16);
- sendPriority(5, 0, 16);
+ sendPriority(lastStreamId, 0, 16);
- sendSimpleGetRequest(5);
+ long startSecond = System.nanoTime();
+ sendSimpleGetRequest(lastStreamId);
readSimpleGetResponse();
- Assert.assertEquals(getSimpleResponseTrace(5), output.getTrace());
+ long durationSecond = System.nanoTime() - startSecond;
+
+ Assert.assertEquals(getSimpleResponseTrace(lastStreamId),
output.getTrace());
output.clearTrace();
+ // Allow second request to take up to 5 times first request or up to 1
second - whichever is the larger - mainly
+ // to allow for CI systems under load that can exhibit significant
timing variation.
+ Assert.assertTrue("First request took [" + durationFirst/1000000 +
"ms], second request took [" +
+ durationSecond/1000000 + "ms]", durationSecond < 1000000000 ||
durationSecond < durationFirst * 3);
+
// Should trigger an error since stream 3 should have been implicitly
// closed.
sendSimpleGetRequest(3);
- handleGoAwayResponse(5);
+ handleGoAwayResponse(lastStreamId);
}
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index d7a6873..db6da26 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -71,6 +71,10 @@
<update>
Add support for ALPN on recent OpenJDK 8 releases. (remm)
</update>
+ <fix>
+ <bug>64467</bug>: Improve performance of closing idle HTTP/2 streams.
+ (markt)
+ </fix>
</changelog>
</subsection>
<subsection name="WebSocket">
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