mirror of https://github.com/aria2/aria2
107 lines
3.4 KiB
C++
107 lines
3.4 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2006 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#include "InitiateConnectionCommand.h"
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#include "Request.h"
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#include "DownloadEngine.h"
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#include "Option.h"
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#include "Logger.h"
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#include "message.h"
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#include "prefs.h"
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#include "NameResolver.h"
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#include "DNSCache.h"
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#include "SocketCore.h"
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namespace aria2 {
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InitiateConnectionCommand::InitiateConnectionCommand
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(int cuid,
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const RequestHandle& req,
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RequestGroup* requestGroup,
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DownloadEngine* e):
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AbstractCommand(cuid, req, requestGroup, e)
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{
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setTimeout(getOption()->getAsInt(PREF_DNS_TIMEOUT));
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setStatus(Command::STATUS_ONESHOT_REALTIME);
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disableReadCheckSocket();
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disableWriteCheckSocket();
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}
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InitiateConnectionCommand::~InitiateConnectionCommand() {}
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bool InitiateConnectionCommand::executeInternal() {
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std::string hostname;
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SharedHandle<Request> proxyRequest = createProxyRequest();
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if(proxyRequest.isNull()) {
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hostname = req->getHost();
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} else {
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hostname = proxyRequest->getHost();
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}
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std::deque<std::string> addrs;
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std::string ipaddr = e->findCachedIPAddress(hostname);
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if(ipaddr.empty()) {
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#ifdef ENABLE_ASYNC_DNS
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if(getOption()->getAsBool(PREF_ASYNC_DNS)) {
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if(!isAsyncNameResolverInitialized()) {
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initAsyncNameResolver(hostname);
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}
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if(asyncResolveHostname()) {
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addrs = getResolvedAddresses();
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} else {
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e->commands.push_back(this);
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return false;
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}
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} else
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#endif // ENABLE_ASYNC_DNS
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{
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NameResolver res;
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res.setSocktype(SOCK_STREAM);
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res.resolve(addrs, hostname);
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}
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logger->info(MSG_NAME_RESOLUTION_COMPLETE, cuid,
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hostname.c_str(),
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addrs.front().c_str());
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e->cacheIPAddress(hostname, addrs.front());
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} else {
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logger->info(MSG_DNS_CACHE_HIT, cuid, hostname.c_str(), ipaddr.c_str());
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addrs.push_back(ipaddr);
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}
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Command* command = createNextCommand(addrs, proxyRequest);
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e->commands.push_back(command);
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return true;
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}
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} // namespace aria2
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