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https://issues.apache.org/jira/browse/DIRMINA-1123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17084077#comment-17084077
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Jonathan Valliere commented on DIRMINA-1123:
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AprSocketAcceptor#open and NioSocketAcceptor#open configure the server socket.
The server socket can have the receive and send buffers configured but they do
absolutely nothing because no data is ever send on them. Only client sockets
can use those buffer configurations. Its possible APR wants those options
configured on the server socket so it can automatically pass them to any
accepted client sockets but other transports do not do this. Its also possible
that the APR code setting the buffers is wholly unnecessary.
You are confusing the difference between the server-socket (which only job is
to listen for incoming requests to establish connections) and a server-side
socket which was created by the server-socket when a remote device established
a connection.
> Receive buffer size is never set for NIO acceptor
> -------------------------------------------------
>
> Key: DIRMINA-1123
> URL: https://issues.apache.org/jira/browse/DIRMINA-1123
> Project: MINA
> Issue Type: Bug
> Components: Transport
> Affects Versions: 2.0.22, 2.1.3
> Reporter: Marcin L
> Priority: Minor
>
> Acceptor window size can't be increased beyond OS defaults.
> It seems the receive buffer size is properly set for
> org.apache.mina.transport.socket.nio.NioSocketConnector, but it is not set at
> all for org.apache.mina.transport.socket.nio.NioSocketAcceptor before socket
> is bound.
> org.apache.mina.core.polling.AbstractPollingIoAcceptor.Acceptor#registerHandles
> comment states that receive buffer size should be initialised, but then
> org.apache.mina.transport.socket.nio.NioSocketAcceptor#open does not do it.,
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