(so) Closing a socket channel registered with Selector and with SO_LINGER set to 0 does not reset connection

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    • Type: Bug
    • Resolution: Fixed
    • Priority: P4
    • 11
    • Affects Version/s: 11
    • Component/s: core-libs
    • b14
    • Verified

        This issue concerns closing a SocketChannel that has the SO_LINGER socket option enabled and the channel is registered with a Selector.

        SO_LINGER is only specified for sockets configured in blocking mode but there are cases where libraries (or tests) may be enabling SO_LINGER on non-blocking sockets to a value of zero so that they can generate a RST to reset the connection. The behavior for the case that the channel is registered with a Selector has changed in JDK 11 (as part of JDK-8198562). In JDK 11, the peer will read EOF whereas in JDK 10 and older, the connection will be reset.

        More discussion on this issue in this thread:
        http://mail.openjdk.java.net/pipermail/nio-dev/2018-May/005101.html

              Assignee:
              Alan Bateman
              Reporter:
              Alan Bateman
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                Created:
                Updated:
                Resolved: