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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 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.
*/
/* copyright --> */
#include "InitiateConnectionCommand.h"
#include "Request.h"
#include "DownloadEngine.h"
#include "Option.h"
#include "Logger.h"
#include "message.h"
#include "prefs.h"
#include "NameResolver.h"
#include "DNSCache.h"
#include "SocketCore.h"
namespace aria2 {
InitiateConnectionCommand::InitiateConnectionCommand
(int cuid,
const RequestHandle& req,
RequestGroup* requestGroup,
DownloadEngine* e):
AbstractCommand(cuid, req, requestGroup, e)
{
setTimeout(e->option->getAsInt(PREF_DNS_TIMEOUT));
setStatus(Command::STATUS_ONESHOT_REALTIME);
disableReadCheckSocket();
disableWriteCheckSocket();
}
InitiateConnectionCommand::~InitiateConnectionCommand() {}
bool InitiateConnectionCommand::executeInternal() {
std::string hostname;
SharedHandle<Request> proxyRequest = createProxyRequest();
if(proxyRequest.isNull()) {
hostname = req->getHost();
} else {
hostname = proxyRequest->getHost();
}
std::deque<std::string> addrs;
std::string ipaddr = e->findCachedIPAddress(hostname);
if(ipaddr.empty()) {
#ifdef ENABLE_ASYNC_DNS
if(e->option->getAsBool(PREF_ASYNC_DNS)) {
if(!isAsyncNameResolverInitialized()) {
initAsyncNameResolver(hostname);
}
if(asyncResolveHostname()) {
addrs = getResolvedAddresses();
} else {
e->commands.push_back(this);
return false;
}
} else
#endif // ENABLE_ASYNC_DNS
{
NameResolver res;
res.setSocktype(SOCK_STREAM);
res.resolve(addrs, hostname);
}
logger->info(MSG_NAME_RESOLUTION_COMPLETE, cuid,
hostname.c_str(),
addrs.front().c_str());
e->cacheIPAddress(hostname, addrs.front());
} else {
logger->info(MSG_DNS_CACHE_HIT, cuid, hostname.c_str(), ipaddr.c_str());
addrs.push_back(ipaddr);
}
Command* command = createNextCommand(addrs, proxyRequest);
e->commands.push_back(command);
return true;
}
} // namespace aria2
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