mirror of https://github.com/aria2/aria2
122 lines
4.2 KiB
C++
122 lines
4.2 KiB
C++
/*
|
|
* aria2 - The high speed download utility
|
|
*
|
|
* Copyright (C) 2010 Tatsuhiro Tsujikawa
|
|
*
|
|
* 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
|
|
*
|
|
* In addition, as a special exception, the copyright holders give
|
|
* permission to link the code of portions of this program with the
|
|
* OpenSSL library under certain conditions as described in each
|
|
* individual source file, and distribute linked combinations
|
|
* including the two.
|
|
* You must obey the GNU General Public License in all respects
|
|
* for all of the code used other than OpenSSL. If you modify
|
|
* file(s) with this exception, you may extend this exception to your
|
|
* version of the file(s), but you are not obligated to do so. If you
|
|
* do not wish to do so, delete this exception statement from your
|
|
* version. If you delete this exception statement from all source
|
|
* files in the program, then also delete it here.
|
|
*/
|
|
#include "LpdMessageDispatcher.h"
|
|
#include "SocketCore.h"
|
|
#include "A2STR.h"
|
|
#include "util.h"
|
|
#include "Logger.h"
|
|
#include "LogFactory.h"
|
|
#include "BtConstants.h"
|
|
#include "RecoverableException.h"
|
|
#include "wallclock.h"
|
|
#include "fmt.h"
|
|
|
|
namespace aria2 {
|
|
|
|
LpdMessageDispatcher::LpdMessageDispatcher(const std::string& infoHash,
|
|
uint16_t port,
|
|
const std::string& multicastAddress,
|
|
uint16_t multicastPort,
|
|
std::chrono::seconds interval)
|
|
: infoHash_(infoHash),
|
|
port_(port),
|
|
multicastAddress_(multicastAddress),
|
|
multicastPort_(multicastPort),
|
|
timer_(Timer::zero()),
|
|
interval_(std::move(interval)),
|
|
request_(bittorrent::createLpdRequest(multicastAddress_, multicastPort_,
|
|
infoHash_, port_))
|
|
{
|
|
}
|
|
|
|
LpdMessageDispatcher::~LpdMessageDispatcher() {}
|
|
|
|
bool LpdMessageDispatcher::init(const std::string& localAddr, unsigned char ttl,
|
|
unsigned char loop)
|
|
{
|
|
try {
|
|
socket_ = std::make_shared<SocketCore>(SOCK_DGRAM);
|
|
socket_->create(AF_INET);
|
|
A2_LOG_DEBUG(
|
|
fmt("Setting multicast outgoing interface=%s", localAddr.c_str()));
|
|
socket_->setMulticastInterface(localAddr);
|
|
A2_LOG_DEBUG(
|
|
fmt("Setting multicast ttl=%u", static_cast<unsigned int>(ttl)));
|
|
socket_->setMulticastTtl(ttl);
|
|
A2_LOG_DEBUG(
|
|
fmt("Setting multicast loop=%u", static_cast<unsigned int>(loop)));
|
|
socket_->setMulticastLoop(loop);
|
|
return true;
|
|
}
|
|
catch (RecoverableException& e) {
|
|
A2_LOG_ERROR_EX("Failed to initialize LpdMessageDispatcher.", e);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool LpdMessageDispatcher::sendMessage()
|
|
{
|
|
return socket_->writeData(request_.c_str(), request_.size(),
|
|
multicastAddress_,
|
|
multicastPort_) == (ssize_t)request_.size();
|
|
}
|
|
|
|
bool LpdMessageDispatcher::isAnnounceReady() const
|
|
{
|
|
return timer_.difference(global::wallclock()) >= interval_;
|
|
}
|
|
|
|
void LpdMessageDispatcher::resetAnnounceTimer()
|
|
{
|
|
timer_ = global::wallclock();
|
|
}
|
|
|
|
namespace bittorrent {
|
|
|
|
std::string createLpdRequest(const std::string& multicastAddress,
|
|
uint16_t multicastPort,
|
|
const std::string& infoHash, uint16_t port)
|
|
{
|
|
return fmt("BT-SEARCH * HTTP/1.1\r\n"
|
|
"Host: %s:%u\r\n"
|
|
"Port: %u\r\n"
|
|
"Infohash: %s\r\n"
|
|
"\r\n\r\n",
|
|
multicastAddress.c_str(), multicastPort, port,
|
|
util::toHex(infoHash).c_str());
|
|
}
|
|
|
|
} // namespace bittorrent
|
|
|
|
} // namespac aria2
|