[jira] [Created] (DIRMINA-1130) NIO socket acceptor should not set send buffer size on ServerSocket/Channel.

["Marcin L (Jira)" <ji...@apache.org>]

Marcin L created DIRMINA-1130:
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             Summary: NIO socket acceptor should not set send buffer size on ServerSocket/Channel.
                 Key: DIRMINA-1130
                 URL: https://issues.apache.org/jira/browse/DIRMINA-1130
             Project: MINA
          Issue Type: Bug
          Components: Transport
    Affects Versions: 2.1.4
            Reporter: Marcin L


NIO socket acceptor should not set *send buffer size* on ServerSocket/Channel.

Setting *SO_SNDBUF* in NioSocketAcceptor as part of https://issues.apache.org/jira/projects/DIRMINA/issues/DIRMINA-1123 was unecessary.

*SO_SNDBUF* can be set after socket listen() and connect() system calls. Setting send buffer size will most likely throw Exception in *NioSocketAcceptor* (hotspot JVM).

See


sun.nio.ch.ServerSocketChannelImpl#supportedOptions ->

sun.nio.ch.ServerSocketChannelImpl.DefaultOptionsHolder#defaultOptions

[http://hg.openjdk.java.net/jdk8/jdk8/jdk/file/tip/src/share/classes/sun/nio/ch/ServerSocketChannelImpl.java|http://example.com]
[https://github.com/frohoff/jdk8u-jdk/blob/master/src/share/classes/sun/nio/ch/ServerSocketChannelImpl.java|http://example.com]

Seems like only these options are supported and should be set before socket connection.

SO_RCVBUF
SO_REUSEADDR
SO_REUSEPORT
IP_TOS



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