NIONetSocket.java
/*
** Module : NIONetSocket.java
** Abstract : Implements NetSocket operations which are specific for insecure channels.
**
** Copyright (c) 2016-2023, Golden Code Development Corporation.
**
** -#- -I- --Date-- ---------------------------------------Description---------------------------------------
** 001 IAS 20160805 Initial version
** 002 IAS 20200725 Fixed read of large messages
** 003 GBB 20230512 Logging methods replaced by CentralLogger/ConversionStatus.
*/
/*
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU Affero General Public License as
** published by the Free Software Foundation, either version 3 of the
** License, or (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU Affero General Public License for more details.
**
** You may find a copy of the GNU Affero GPL version 3 at the following
** location: https://www.gnu.org/licenses/agpl-3.0.en.html
**
** Additional terms under GNU Affero GPL version 3 section 7:
**
** Under Section 7 of the GNU Affero GPL version 3, the following additional
** terms apply to the works covered under the License. These additional terms
** are non-permissive additional terms allowed under Section 7 of the GNU
** Affero GPL version 3 and may not be removed by you.
**
** 0. Attribution Requirement.
**
** You must preserve all legal notices or author attributions in the covered
** work or Appropriate Legal Notices displayed by works containing the covered
** work. You may not remove from the covered work any author or developer
** credit already included within the covered work.
**
** 1. No License To Use Trademarks.
**
** This license does not grant any license or rights to use the trademarks
** Golden Code, FWD, any Golden Code or FWD logo, or any other trademarks
** of Golden Code Development Corporation. You are not authorized to use the
** name Golden Code, FWD, or the names of any author or contributor, for
** publicity purposes without written authorization.
**
** 2. No Misrepresentation of Affiliation.
**
** You may not represent yourself as Golden Code Development Corporation or FWD.
**
** You may not represent yourself for publicity purposes as associated with
** Golden Code Development Corporation, FWD, or any author or contributor to
** the covered work, without written authorization.
**
** 3. No Misrepresentation of Source or Origin.
**
** You may not represent the covered work as solely your work. All modified
** versions of the covered work must be marked in a reasonable way to make it
** clear that the modified work is not originating from Golden Code Development
** Corporation or FWD. All modified versions must contain the notices of
** attribution required in this license.
*/
package com.goldencode.p2j.net;
import com.goldencode.p2j.util.logging.*;
import java.io.*;
import java.nio.*;
import java.nio.channels.*;
import java.util.logging.*;
import javax.net.ssl.*;
/**
* Implements NetSocket operations which are specific for insecure channels
*/
class NIONetSocket
extends NIONetSocketBase
{
/** Logger. */
private static final CentralLogger LOG = CentralLogger.get(NIONetSocket.class);
/** read buffer */
protected final ByteBuffer rbuf;
/**
* Constructor
*
* @param channel
* underlying SocketChannel
* @throws IOException
* on error
*/
public NIONetSocket(SocketChannel channel)
throws IOException
{
super(channel);
this.rbuf = ByteBuffer.allocateDirect(BUF_SIZE);
}
/**
* Gets the SSL session.
*
* @return The SSL session or <code>null</code> if the socket is not
* secure.
*/
public SSLSession getSession()
{
return null;
}
/**
* Send the data to the channel
*
* @param bb
* data to be sent
*/
protected void write(ByteBuffer bb) throws IOException
{
@SuppressWarnings("unused")
int n = 0;
while(bb.hasRemaining())
{
n += channel.write(bb);
}
}
/**
* Read next data chunk from the channel
*
* @return next data chunk
*/
@Override
protected synchronized byte[] readFully() throws IOException, EOFException
{
boolean isFinestLoggable = LOG.isLoggable(Level.FINEST);
int n;
while (rbuf.position() < 4)
{
n = channel.read(rbuf);
if (n < 0)
{
throw new EOFException();
}
}
int pos = rbuf.position();
rbuf.rewind();
int len = rbuf.getInt();
int remains = len;
int bpos = 0;
int rbpos = 4;
int clen;
byte[] input = new byte[len];
rbuf.position(pos);
while (rbuf.position() < rbpos + remains)
{
int bytesToRead = 0;
n = channel.read(rbuf);
if (n < 0)
{
throw new EOFException();
}
clen = rbuf.position();
if (clen == BUF_SIZE)
{
rbuf.flip().position(rbpos);
bytesToRead = Math.min(clen-rbpos, remains);
if (isFinestLoggable)
{
LOG.log(Level.FINEST, "rbpos: %s, bpos: %s, clen: %s, remains: %s, bytesToRead: %s",
rbpos, bpos, clen, remains, bytesToRead);
}
rbuf.get(input, bpos, bytesToRead);
rbuf.compact();
bpos += Math.min(clen-rbpos, remains);
rbpos = 0;
}
remains = Math.max(0, remains - bytesToRead);
if (isFinestLoggable)
{
LOG.log(Level.FINEST, "rbpos: %s, bpos: %s, clen: %s, remains: %s",
rbpos, bpos, rbuf.position(), remains);
}
}
clen = rbuf.position();
int bytesToRead = Math.min(clen-rbpos, remains);
if (clen > rbpos)
{
if (isFinestLoggable && len > BUF_SIZE)
{
LOG.log(Level.FINEST, "rbpos: %s, bpos: %s, clen: %s, remains: %s, bytesToRead: %s",
rbpos, bpos, clen, remains, bytesToRead);
}
rbuf.flip().position(rbpos);
rbuf.get(input, bpos, bytesToRead);
rbuf.compact();
}
remains = Math.min(0, remains - bytesToRead);
if (remains != 0)
{
tracef("***** remains == %d", remains);
}
return input;
}
}