Examples of org.apache.mina.common.ByteBuffer

org.apache.mina.common.ByteBuffer
on autoExpand (it is off by default) buf.setAutoExpand( true ); buf.putString( greeting, utf8encoder ); NIO ByteBuffer is reallocated by MINA ByteBuffer behind the scene if the encoded data is larger than 16 bytes. Its capacity will increase by two times, and its limit will increase to the last position the string is written.

Derived Buffers

Derived buffers are the buffers which were created by {@link #duplicate()}, {@link #slice()}, or {@link #asReadOnlyBuffer()}. They are useful especially when you broadcast the same messages to multiple {@link IoSession}s. Please note that the derived buffers are neither pooled nor auto-expandable. Trying to expand a derived buffer will raise {@link IllegalStateException}.

Changing Buffer Allocation and Management Policy

MINA provides a {@link ByteBufferAllocator} interface to let you overridethe default buffer management behavior. There are two allocators provided out-of-the-box:
- {@link PooledByteBufferAllocator} (Default)
- {@link SimpleByteBufferAllocator}
You can change the allocator by calling {@link #setAllocator(ByteBufferAllocator)}.
@author The Apache Directory Project (mina-dev@directory.apache.org) @version $Rev: 555855 $, $Date: 2007-07-13 12:19:00 +0900 (Fri, 13 Jul 2007) $ @noinspection StaticNonFinalField @see ByteBufferAllocator

        SocketChannel ch = session.getChannel();


        Queue writeBufferQueue = session.getWriteBufferQueue();
        Queue writeMarkerQueue = session.getWriteMarkerQueue();


        ByteBuffer buf;
        Object marker;
        for( ;; )
        {
            synchronized( writeBufferQueue )
            {
                buf = ( ByteBuffer ) writeBufferQueue.first();
                marker = writeMarkerQueue.first();
            }


            if( buf == null )
                break;


            if( buf.remaining() == 0 )
            {
                synchronized( writeBufferQueue )
                {
                    writeBufferQueue.pop();
                    writeMarkerQueue.pop();
                }
                try
                {
                    buf.release();
                }
                catch( IllegalStateException e )
                {
                    session.getManagerFilterChain().exceptionCaught( session, e );
                }


                session.increaseWrittenWriteRequests();
                session.getManagerFilterChain().dataWritten( session, marker );
                continue;
            }


            int writtenBytes = ch.write( buf.buf() );
            if( writtenBytes > 0 )
            {
                session.increaseWrittenBytes( writtenBytes );
                session.resetIdleCount( IdleStatus.BOTH_IDLE );
                session.resetIdleCount( IdleStatus.WRITER_IDLE );
            }


            if( buf.hasRemaining() )
            {
                // Kernel buffer is full
                key.interestOps( key.interestOps() | SelectionKey.OP_WRITE );
                break;
            }

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                if( log.isDebugEnabled() )
                {
                    log.debug( session + " encrypt: " + buf );
                }
                handler.encrypt( buf.buf() );
                ByteBuffer encryptedBuffer = copy( handler
                        .getOutNetBuffer() );


                if( log.isDebugEnabled() )
                {
                    log.debug( session + " encrypted buf: " + encryptedBuffer);

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            log.debug( session + " appBuffer: " + sslHandler.getAppBuffer() );
        }
        if( sslHandler.getAppBuffer().hasRemaining() )
        {
            // forward read app data
            ByteBuffer readBuffer = copy( sslHandler.getAppBuffer() );
            if( log.isDebugEnabled() )
            {
                log.debug( session + " app data read: " + readBuffer + " (" + readBuffer.getHexDump() + ')' );
            }
            nextFilter.dataRead( session, readBuffer );
        }
    }

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            if( log.isDebugEnabled() )
            {
                log.debug( session + " write outNetBuffer: " +
                                   sslHandler.getOutNetBuffer() );
            }
            ByteBuffer writeBuffer = copy( sslHandler.getOutNetBuffer() );
            if( log.isDebugEnabled() )
            {
                log.debug( session + " session write: " + writeBuffer );
            }
            //debug("outNetBuffer (after copy): {0}", sslHandler.getOutNetBuffer());
            filterWrite( nextFilter, session, writeBuffer, SSL_MARKER );


            // loop while more writes required to complete handshake
            while( sslHandler.needToCompleteInitialHandshake() )
            {
                try
                {
                    sslHandler.continueHandshake( nextFilter );
                }
                catch( SSLException ssle )
                {
                    SSLException newSSLE = new SSLHandshakeException(
                            "Initial SSL handshake failed." );
                    newSSLE.initCause( ssle );
                    throw newSSLE;
                }
                if( sslHandler.getOutNetBuffer().hasRemaining() )
                {
                    if( log.isDebugEnabled() )
                    {
                        log.debug( session + " write outNetBuffer2: " +
                                           sslHandler.getOutNetBuffer() );
                    }
                    ByteBuffer writeBuffer2 = copy( sslHandler
                            .getOutNetBuffer() );
                    filterWrite( nextFilter, session, writeBuffer2, SSL_MARKER );
                }
            }
        }

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     * @param src the buffer to copy
     * @return the new buffer, ready to read from
     */
    private static ByteBuffer copy( java.nio.ByteBuffer src )
    {
        ByteBuffer copy = ByteBuffer.allocate( src.remaining() );
        copy.put( src );
        copy.flip();
        return copy;
    }

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                        Queue queue = psession.encOut.getBufferQueue();
                        encoder.encode( psession, message, psession.encOut );
                        for( ;; )
                        {
                            ByteBuffer buf = ( ByteBuffer ) queue.pop();
                            if( buf == null )
                                break;
                            // use marker only if it is the last ByteBuffer
                            Object marker = queue.isEmpty() ? message : null;
                            session.write( buf, marker );

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                                                  "Cannot encode too long string." );
        }


        val += "\r\n";


        ByteBuffer buf = ByteBuffer.allocate( val.length() );
        for( int i = 0; i < val.length(); i++ )
        {
            buf.put( ( byte ) val.charAt( i ) );
        }


        buf.flip();
        out.write( buf );
    }

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        {
            throw new IllegalStateException(
                    "This decoder doesn't work for connectionless transport types." );
        }


        ByteBuffer buf = this.buf;
        buf.put( in );
        buf.flip();


        try
        {
            for( ;; )
            {
                int oldPos = buf.position();
                boolean decoded = doDecode( session, buf, out );
                if( decoded )
                {
                    if( buf.position() == oldPos )
                    {
                        throw new IllegalStateException(
                                "doDecode() can't return true when buffer is not consumed." );
                    }
                    
                    if( !buf.hasRemaining() )
                    {
                        break;
                    }
                }
                else
                {
                    break;
                }
            }
        }
        finally
        {
            buf.compact();
        }
    }

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    }


    public void dataRead( IoSession session, ByteBuffer rb )
    {
        // Write the received data back to remote peer
        ByteBuffer wb = ByteBuffer.allocate( rb.remaining() );
        wb.put( rb );
        wb.flip();
        session.write( wb, null );
    }

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                in.limit(oldLimit);
                in.position(pos);


                if (ctx.getOverflowPosition() == 0) {
                    ByteBuffer buf = ctx.getBuffer();
                    buf.flip();
                    buf.limit(buf.limit() - matchCount);
                    try {
                        out.write(buf.getString(ctx.getDecoder()));
                    } finally {
                        buf.clear();
                    }
                } else {
                    int overflowPosition = ctx.getOverflowPosition();
                    ctx.reset();
                    throw new BufferDataException(

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Examples of org.apache.mina.common.ByteBuffer

Derived Buffers

Changing Buffer Allocation and Management Policy

Related Classes of org.apache.mina.common.ByteBuffer