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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 7e26b57 Revert stream memory footprint reduction and incomplete fixes
7e26b57 is described below
commit 7e26b575f485413fca9a5491f081f509faf338b1
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Tue Sep 8 10:16:57 2020 +0100
Revert stream memory footprint reduction and incomplete fixes
Revert the changes due to the steady stream of regressions that are
being reported and.or found by the CI systems. A more robust solution is
required.
---
java/org/apache/coyote/http2/Stream.java | 41 ++++++++++++--------------------
webapps/docs/changelog.xml | 5 ++++
2 files changed, 20 insertions(+), 26 deletions(-)
diff --git a/java/org/apache/coyote/http2/Stream.java
b/java/org/apache/coyote/http2/Stream.java
index b01ca01..c3139ab 100644
--- a/java/org/apache/coyote/http2/Stream.java
+++ b/java/org/apache/coyote/http2/Stream.java
@@ -300,19 +300,14 @@ class Stream extends AbstractStream implements
HeaderEmitter {
void doStreamCancel(String msg, Http2Error error) throws CloseNowException
{
- // Avoid NPEs on duplicate cancellations
- StreamOutputBuffer streamOutputBuffer = this.streamOutputBuffer;
- Response coyoteResponse = this.coyoteResponse;
StreamException se = new StreamException(msg, error, getIdAsInt());
- if (streamOutputBuffer != null && coyoteResponse != null) {
- // Prevent the application making further writes
- streamOutputBuffer.closed = true;
- // Prevent Tomcat's error handling trying to write
- coyoteResponse.setError();
- coyoteResponse.setErrorReported();
- // Trigger a reset once control returns to Tomcat
- streamOutputBuffer.reset = se;
- }
+ // Prevent the application making further writes
+ streamOutputBuffer.closed = true;
+ // Prevent Tomcat's error handling trying to write
+ coyoteResponse.setError();
+ coyoteResponse.setErrorReported();
+ // Trigger a reset once control returns to Tomcat
+ streamOutputBuffer.reset = se;
throw new CloseNowException(msg, se);
}
@@ -475,12 +470,8 @@ class Stream extends AbstractStream implements
HeaderEmitter {
}
if (headerState == HEADER_STATE_TRAILER) {
- // Avoid NPE if Stream has been closed on Stream specific
thread
- Request coyoteRequest = this.coyoteRequest;
- if (coyoteRequest != null) {
- // HTTP/2 headers are already always lower case
- coyoteRequest.getTrailerFields().put(name, value);
- }
+ // HTTP/2 headers are already always lower case
+ coyoteRequest.getTrailerFields().put(name, value);
} else {
coyoteRequest.getMimeHeaders().addValue(name).setString(value);
}
@@ -656,14 +647,9 @@ class Stream extends AbstractStream implements
HeaderEmitter {
final boolean isContentLengthInconsistent() {
- Request coyoteRequest = this.coyoteRequest;
- // May be null when processing trailer headers after stream has been
- // closed.
- if (coyoteRequest != null) {
- long contentLengthHeader = coyoteRequest.getContentLengthLong();
- if (contentLengthHeader > -1 && contentLengthReceived !=
contentLengthHeader) {
- return true;
- }
+ long contentLengthHeader = coyoteRequest.getContentLengthLong();
+ if (contentLengthHeader > -1 && contentLengthReceived !=
contentLengthHeader) {
+ return true;
}
return false;
}
@@ -765,12 +751,15 @@ class Stream extends AbstractStream implements
HeaderEmitter {
if (log.isDebugEnabled()) {
log.debug(sm.getString("stream.recycle", getConnectionId(),
getIdentifier()));
}
+ /*
+ * Temporarily disabled due to multiple regressions (NPEs)
coyoteRequest = null;
cookieHeader = null;
coyoteResponse = null;
inputBuffer = null;
streamOutputBuffer = null;
http2OutputBuffer = null;
+ */
}
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index f9bcfd5..b835e53 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -172,6 +172,11 @@
streams to account for DATA frames containing zero-length padding.
(markt)
</fix>
+ <fix>
+ <bug>64710</bug>: Revert the changes to reduce the memory footprint of
+ closed HTTP/2 streams as they triggered multiple regressions in the
form
+ of <code>NullPointerException</code>s. (markt)
+ </fix>
</changelog>
</subsection>
<subsection name="WebSocket">
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