/* <!-- 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 "HttpInitiateConnectionCommand.h"
#include "Request.h"
#include "DownloadEngine.h"
#include "HttpConnection.h"
#include "HttpRequest.h"
#include "Segment.h"
#include "HttpRequestCommand.h"
#include "HttpProxyRequestCommand.h"
#include "DlAbortEx.h"
#include "Option.h"
#include "Logger.h"
#include "Socket.h"
#include "message.h"
#include "prefs.h"
#include "A2STR.h"
#include "DownloadContext.h"

namespace aria2 {

HttpInitiateConnectionCommand::HttpInitiateConnectionCommand
(int cuid,
 const RequestHandle& req,
 const SharedHandle<FileEntry>& fileEntry,
 RequestGroup* requestGroup,
 DownloadEngine* e):
  InitiateConnectionCommand(cuid, req, fileEntry, requestGroup, e) {}

HttpInitiateConnectionCommand::~HttpInitiateConnectionCommand() {}

Command* HttpInitiateConnectionCommand::createNextCommand
(const std::string& hostname, const std::string& addr, uint16_t port,
 const std::deque<std::string>& resolvedAddresses,
 const SharedHandle<Request>& proxyRequest)
{
  Command* command;
  if(!proxyRequest.isNull()) {
    SharedHandle<SocketCore> pooledSocket =
      e->popPooledSocket(req->getHost(), req->getPort());
    std::string proxyMethod = resolveProxyMethod(req->getProtocol());
    if(pooledSocket.isNull()) {
      logger->info(MSG_CONNECTING_TO_SERVER, cuid, addr.c_str(), port);
      socket.reset(new SocketCore());
      socket->establishConnection(addr, port);

      if(proxyMethod == V_TUNNEL) {
	HttpProxyRequestCommand* c =
	  new HttpProxyRequestCommand(cuid, req, _fileEntry,
				      _requestGroup, e,
				      proxyRequest, socket);
	c->setConnectedAddr(hostname, addr, port);
	command = c;
      } else if(proxyMethod == V_GET) {
	SharedHandle<HttpConnection> httpConnection
	  (new HttpConnection(cuid, socket, getOption().get()));
	HttpRequestCommand* c = new HttpRequestCommand(cuid, req,
						       _fileEntry,
						       _requestGroup,
						       httpConnection, e,
						       socket);
	c->setConnectedAddr(hostname, addr, port);
	c->setProxyRequest(proxyRequest);
	command = c;
      } else {
	// TODO
	throw DL_ABORT_EX("ERROR");
      }
    } else {
      SharedHandle<HttpConnection> httpConnection
	(new HttpConnection(cuid, pooledSocket, getOption().get()));
      HttpRequestCommand* c = new HttpRequestCommand(cuid, req,
						     _fileEntry,
						     _requestGroup,
						     httpConnection, e,
						     pooledSocket);
      if(proxyMethod == V_GET) {
	c->setProxyRequest(proxyRequest);
      }
      command = c;
    }
  } else {
    SharedHandle<SocketCore> pooledSocket =
      e->popPooledSocket(resolvedAddresses, req->getPort());
    if(pooledSocket.isNull()) {
      logger->info(MSG_CONNECTING_TO_SERVER, cuid, addr.c_str(), port);
      socket.reset(new SocketCore());
      socket->establishConnection(addr, port);
    } else {
      socket = pooledSocket;
    }
    SharedHandle<HttpConnection> httpConnection(new HttpConnection(cuid, socket, getOption().get()));
    HttpRequestCommand* c =
      new HttpRequestCommand(cuid, req, _fileEntry, _requestGroup,
			     httpConnection, e, socket);
    if(pooledSocket.isNull()) {
      c->setConnectedAddr(hostname, addr, port);
    }
    command = c;
  }
  return command;
}

} // namespace aria2