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Limit the concurrent connection attempts in Windows XP. Its's only a hack.

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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
This commit is contained in:
thunder2 2010-10-07 11:17:42 +00:00
parent c134b5f605
commit f4bbd3e933
6 changed files with 188 additions and 4 deletions
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16
libretroshare/src/pqi/pqipersongrp.h
View file

@ -64,10 +64,24 @@ int load_config();
/*************** pqiMonitor callback ***********************/
virtual void statusChange(const std::list<pqipeer> &plist);
#ifdef WINDOWS_SYS
///////////////////////////////////////////////////////////
// hack for too many connections
virtual void statusChanged();
///////////////////////////////////////////////////////////
#endif
/******************* Peer Control **************************/
virtual int addPeer(std::string id); /* can be overloaded for testing */
int removePeer(std::string id);
int connectPeer(std::string id);
int connectPeer(std::string id
#ifdef WINDOWS_SYS
///////////////////////////////////////////////////////////
// hack for too many connections
, bool bConnect = false
///////////////////////////////////////////////////////////
#endif
);
/* Work-around to dodgy pointer stuff */
int tagHeartbeatRecvd(std::string id);