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/***************************************************************************
* Copyright (C) 2005 by Joris Guisson *
* joris.guisson@gmail.com *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 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 General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include <util/log.h>
#include <torrent/globals.h>
#include "bufferedsocket.h"
#include "circularbuffer.h"
#include "speed.h"
using namespace bt;
namespace net
{
#define OUTPUT_BUFFER_SIZE 16393
BufferedSocket::BufferedSocket(int fd) : Socket(fd),rdr(0),wrt(0),up_gid(0),down_gid(0)
{
bytes_in_output_buffer = 0;
bytes_sent = 0;
down_speed = new Speed();
up_speed = new Speed();
output_buffer = new Uint8[OUTPUT_BUFFER_SIZE];
poll_index = -1;
}
BufferedSocket::BufferedSocket(bool tcp) : Socket(tcp),rdr(0),wrt(0),up_gid(0),down_gid(0)
{
bytes_in_output_buffer = 0;
bytes_sent = 0;
down_speed = new Speed();
up_speed = new Speed();
output_buffer = new Uint8[OUTPUT_BUFFER_SIZE];
poll_index = -1;
}
BufferedSocket::~BufferedSocket()
{
delete [] output_buffer;
delete up_speed;
delete down_speed;
}
void BufferedSocket::setGroupID(Uint32 gid,bool upload)
{
if (upload)
up_gid = gid;
else
down_gid = gid;
}
float BufferedSocket::getDownloadRate() const
{
mutex.lock();
float ret = down_speed->getRate();
mutex.unlock();
return ret;
}
float BufferedSocket::getUploadRate() const
{
mutex.lock();
float ret = up_speed->getRate();
mutex.unlock();
return ret;
}
static Uint8 input_buffer[OUTPUT_BUFFER_SIZE];
Uint32 BufferedSocket::readBuffered(Uint32 max_bytes_to_read,bt::TimeStamp now)
{
Uint32 br = 0;
bool no_limit = (max_bytes_to_read == 0);
if (bytesAvailable() == 0)
{
close();
return 0;
}
while ((br < max_bytes_to_read || no_limit) && bytesAvailable() > 0)
{
Uint32 tr = bytesAvailable();
if (tr > OUTPUT_BUFFER_SIZE)
tr = OUTPUT_BUFFER_SIZE;
if (!no_limit && tr + br > max_bytes_to_read)
tr = max_bytes_to_read - br;
int ret = Socket::recv(input_buffer,tr);
if (ret != 0)
{
mutex.lock();
down_speed->onData(ret,now);
mutex.unlock();
if (rdr)
rdr->onDataReady(input_buffer,ret);
br += ret;
}
else
{
// connection closed, so just return the number of bytes read
return br;
}
}
return br;
}
Uint32 BufferedSocket::sendOutputBuffer(Uint32 max,bt::TimeStamp now)
{
if (bytes_in_output_buffer == 0)
return 0;
if (max == 0 || bytes_in_output_buffer <= max)
{
// try to send everything
Uint32 bw = bytes_in_output_buffer;
Uint32 off = bytes_sent;
Uint32 ret = Socket::send(output_buffer + off,bw);
if (ret > 0)
{
mutex.lock();
up_speed->onData(ret,now);
mutex.unlock();
bytes_in_output_buffer -= ret;
bytes_sent += ret;
if (bytes_sent == bytes_in_output_buffer)
bytes_in_output_buffer = bytes_sent = 0;
return ret;
}
else
{
return 0;
}
}
else
{
Uint32 bw = max;
Uint32 off = bytes_sent;
Uint32 ret = Socket::send(output_buffer + off,bw);
if (ret > 0)
{
mutex.lock();
up_speed->onData(ret,now);
mutex.unlock();
bytes_in_output_buffer -= ret;
bytes_sent += ret;
return ret;
}
else
{
return 0;
}
}
}
Uint32 BufferedSocket::writeBuffered(Uint32 max,bt::TimeStamp now)
{
if (!wrt)
return 0;
Uint32 bw = 0;
bool no_limit = max == 0;
if (bytes_in_output_buffer > 0)
{
Uint32 ret = sendOutputBuffer(max,now);
if (bytes_in_output_buffer > 0)
{
// haven't sent it fully so return
return ret;
}
bw += ret;
}
// run as long as we do not hit the limit and we can send everything
while ((no_limit || bw < max) && bytes_in_output_buffer == 0)
{
// fill output buffer
bytes_in_output_buffer = wrt->onReadyToWrite(output_buffer,OUTPUT_BUFFER_SIZE);
bytes_sent = 0;
if (bytes_in_output_buffer > 0)
{
// try to send
bw += sendOutputBuffer(max - bw,now);
}
else
{
// no bytes available in output buffer so break
break;
}
}
return bw;
}
void BufferedSocket::updateSpeeds(bt::TimeStamp now)
{
up_speed->update(now);
down_speed->update(now);
}
}
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