ServerConnector leaks closed sockets which can lead to file descriptor exhaustion #5794

joewitt · 2020-12-10T21:59:12Z

Jetty version
9.4.35.v20201120 and older
Java version
OpenJDK Runtime Environment (build 1.8.0_272-b10) and others
OS type/version
OSX and Linux
Description
The ServerConnector class in openAcceptChannel creates a local variable which is an opened server socket channel. Then when attempting to bind to the specified port, if there is an exception, it will throw a new exception and not clean up the created channel/resource. The fix is to ensure that in the event of a bind exception the serverChannel is properly closed before throwing the exception back to the caller. Without this change the socket will be in a CLOSED state and a file descriptor held for it for the remainder of the life of the process.

…ailed bind to ensure proper resources are cleaned Signed-off-by: Joe Witt <joewitt@apache.org>

Fix #5794 Close socket on bind failure

Issue #5794 ensuring serverChannel is closed in the event of a failed bind to ensure proper resources are cleaned

Fix #5794 Close socket on bind failure

Update fix with IO.close()

* Fix #5794 Close socket on bind failure Fix #5794 Close socket on bind failure * Fix #5794 Close socket on bind failure Fix #5794 Close socket on bind failure * Fix #5794 Close socket on bind failure Update fix with IO.close()

gregw · 2020-12-14T11:17:40Z

#5802 modified to be based on #5797 and both now merged. thanks @joewitt

joewitt added a commit to joewitt/jetty.project that referenced this issue Dec 11, 2020

Issue jetty#5794 ensuring serverChannel is closed in the event of a f…

c7c8e64

…ailed bind to ensure proper resources are cleaned Signed-off-by: Joe Witt <joewitt@apache.org>

joewitt added a commit to joewitt/jetty.project that referenced this issue Dec 11, 2020

Issue jetty#5794 ensuring serverChannel is closed in the event of a f…

f7d4b94

…ailed bind to ensure proper resources are cleaned Signed-off-by: Joe Witt <joewitt@apache.org>

joewitt mentioned this issue Dec 11, 2020

Issue #5794 ensuring serverChannel is closed in the event of a failed bind to ensure proper resources are cleaned #5797

Merged

gregw self-assigned this Dec 12, 2020

gregw added a commit that referenced this issue Dec 12, 2020

Fix #5794 Close socket on bind failure

9349ed2

Fix #5794 Close socket on bind failure

gregw mentioned this issue Dec 12, 2020

Fix #5794 Close socket on bind failure #5802

Merged

gregw added a commit that referenced this issue Dec 12, 2020

Fix #5794 Close socket on bind failure

7125d8d

Fix #5794 Close socket on bind failure

sbordet added a commit that referenced this issue Dec 14, 2020

Merge pull request #5797 from joewitt/jetty-9.4.x

db68a31

Issue #5794 ensuring serverChannel is closed in the event of a failed bind to ensure proper resources are cleaned

gregw added a commit that referenced this issue Dec 14, 2020

Fix #5794 Close socket on bind failure

f2e8706

Fix #5794 Close socket on bind failure

gregw added a commit that referenced this issue Dec 14, 2020

Fix #5794 Close socket on bind failure

420093e

Update fix with IO.close()

gregw closed this as completed Dec 14, 2020

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ServerConnector leaks closed sockets which can lead to file descriptor exhaustion #5794

ServerConnector leaks closed sockets which can lead to file descriptor exhaustion #5794

joewitt commented Dec 10, 2020

gregw commented Dec 14, 2020

ServerConnector leaks closed sockets which can lead to file descriptor exhaustion #5794

ServerConnector leaks closed sockets which can lead to file descriptor exhaustion #5794

Comments

joewitt commented Dec 10, 2020

gregw commented Dec 14, 2020