RetroShare/libretroshare/src/pqi/pqimonitor.h
thunder2 f4bbd3e933 Limit the concurrent connection attempts in Windows XP. Its's only a hack.
Problem:
RetroShare connects to all ssl's at once. In Windows XP there is a build-in connection limit of concurrent incomplete connections.

Quote:
"The TCP/IP stack in Windows XP with Service Pack 2 (SP2) installed limits the number of concurrent, incomplete outbound TCP connection attempts. When the limit is reached, subsequent connection attempts are put in a queue and resolved at a fixed rate so that there are only a limited number of connections in the incomplete state."

This results in a high usage of the nonepaged pool and when it runs over the limit it results in the following error in the system log:
German:  "TCP/IP hat das Sicherheitslimit erreicht, das für die Anzahl gleichzeitiger TCP-Verbindungsversuche festgelegt wurde."
English: "TCP/IP has reached the security limit imposed on the number of concurrent (incomplete) TCP connect attempts."

After a longer runtime of RetroShare and a very high usage of the nonepaged pool all connections of all running programs are lost and no new connections can be made. At the end it can cause a blue screen.

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@3631 b45a01b8-16f6-495d-af2f-9b41ad6348cc
2010-10-07 11:17:42 +00:00

174 lines
4.7 KiB
C++

/*
* libretroshare/src/pqi: pqimonitor.h
*
* 3P/PQI network interface for RetroShare.
*
* Copyright 2007-2008 by Robert Fernie.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License Version 2 as published by the Free Software Foundation.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*
* Please report all bugs and problems to "retroshare@lunamutt.com".
*
*/
#ifndef PQI_MONITOR_H
#define PQI_MONITOR_H
/**** Rough sketch of a Monitor class
* expect it to change significantly
*
*/
#include <inttypes.h>
#include <string>
#include <list>
#include "pqi/pqiipset.h"
/************** Define Type/Mode/Source ***************/
/* STATE MASK */
const uint32_t RS_PEER_STATE_MASK = 0x00ff;
const uint32_t RS_PEER_ACTION_MASK = 0xff00;
/* STATE */
const uint32_t RS_PEER_S_FRIEND = 0x0001;
const uint32_t RS_PEER_S_ONLINE = 0x0002; /* heard from recently..*/
const uint32_t RS_PEER_S_CONNECTED = 0x0004;
const uint32_t RS_PEER_S_UNREACHABLE = 0x0008;
/* ACTIONS */
const uint32_t RS_PEER_NEW = 0x0001; /* new Peer */
const uint32_t RS_PEER_ONLINE = 0x0002;
const uint32_t RS_PEER_CONNECTED = 0x0004;
const uint32_t RS_PEER_MOVED = 0x0008; /* moved from F->O or O->F */
const uint32_t RS_PEER_DISCONNECTED = 0x0010;
const uint32_t RS_PEER_CONNECT_REQ = 0x0020;
/* Stun Status Flags */
//const uint32_t RS_STUN_SRC_DHT = 0x0001;
//const uint32_t RS_STUN_SRC_PEER = 0x0002;
const uint32_t RS_STUN_ONLINE = 0x0010;
const uint32_t RS_STUN_FRIEND = 0x0020;
const uint32_t RS_STUN_FRIEND_OF_FRIEND = 0x0040;
#define RS_CONNECT_PASSIVE 1
#define RS_CONNECT_ACTIVE 2
#define RS_CB_DHT 1 /* from dht */
#define RS_CB_DISC 2 /* from peers */
#define RS_CB_PERSON 3 /* from connection */
#define RS_CB_PROXY 4 /* via proxy */
class pqipeer
{
public:
std::string id;
std::string name;
uint32_t state;
uint32_t actions;
};
class p3ConnectMgr;
/*!
* This class should be implemented
* to use the information that is passed to it via
* from the p3ConnectMngr
* Useful information is sent via ticks such as a peer's
* state and a peer's action
*/
class pqiMonitor
{
public:
pqiMonitor() :mConnMgr(NULL) { return; }
virtual ~pqiMonitor() { return; }
/*!
* passes a handle the retroshare connection manager
*/
void setConnectionMgr(p3ConnectMgr *cm) { mConnMgr = cm; }
/*!
* this serves as a call back function for server which has
* a handle on the subclass and updates this subclass on the
* action of peer's of the client (state and action information)
*
*@param plist contains list of states and actions of the client's peers
*/
virtual void statusChange(const std::list<pqipeer> &plist) = 0;
#ifdef WINDOWS_SYS
///////////////////////////////////////////////////////////
// hack for too many connections
virtual void statusChanged() {};
///////////////////////////////////////////////////////////
#endif
//virtual void ownStatusChange(pqipeer &) { return; } // SIGNAL reset or similar.
//virtual void peerStatus(std::string id, uint32_t mode) = 0;
protected:
p3ConnectMgr *mConnMgr;
};
class pqiConnectCb
{
public:
virtual ~pqiConnectCb() { return; }
virtual void peerStatus(std::string id, const pqiIpAddrSet &addrs,
uint32_t type, uint32_t flags, uint32_t source) = 0;
virtual void peerConnectRequest(std::string id,
struct sockaddr_in raddr, uint32_t source) = 0;
//virtual void stunStatus(std::string id, struct sockaddr_in raddr, uint32_t type, uint32_t flags) = 0;
};
/**** DUMMY CB FOR TESTING (just prints) ****/
class pqiConnectCbDummy: public pqiConnectCb
{
public:
pqiConnectCbDummy();
virtual ~pqiConnectCbDummy();
virtual void peerStatus(std::string id, const pqiIpAddrSet &addrs,
uint32_t type, uint32_t mode, uint32_t source);
virtual void peerConnectRequest(std::string id,
struct sockaddr_in raddr, uint32_t source);
//virtual void stunStatus(std::string id, struct sockaddr_in raddr, uint32_t type, uint32_t flags);
};
/* network listener interface - used to reset network addresses */
class pqiNetListener
{
public:
virtual bool resetListener(struct sockaddr_in &local) = 0;
};
#endif // PQI_MONITOR_H