Hello All, I have an application which uses a large number of sockets, e.g. 10000, that is also acting as an snmp agent. If snmpd is restarted, it is possible that the application's new connection to snmpd uses a file descriptor >= 1024 - in this case the agent_check_and_process code will crash due to the fd set size. As a fix, I've patched my version of net-snmp-config.h to allow the FD_SETSIZE to be re-defined and this seems to work OK.
Anyway, I just thought I'd let you know. Perhaps it may be worth adding this as a configure option, or maybe it would be useful to add an epoll interface. Regards, Dominic My change to net-snmp-config.h, define MAX_NUM_FDS to change the FD_SETSIZE limit: #ifdef MAX_NUM_FDS #if ( ( __GNUC__ > 3 ) || ( ( __GNUC__ == 3 ) && ( __GNUC_MINOR__ >= 4 ) ) ) #ifdef FD_SETSIZE # if FD_SETSIZE != MAX_NUM_FDS # error "FD_SETSIZE already defined - include net-snmp-config.h first" # endif #else // FD_SETSIZE undefined # include <bits/types.h> # undef __FD_SETSIZE # define __FD_SETSIZE MAX_NUM_FDS # include <sys/select.h> # if FD_SETSIZE != MAX_NUM_FDS # error "Problem changing max number of FDs - include net-snmp-config.h first" # endif #endif // FD_SETSIZE #else // if GNUC > 3 etc.. #error "Cannot adjust maximum number of FDs on this compiler" #endif // if GNUC > 3 etc.. #endif // MAX_NUM_FDS ======================================================================= Homechoice is a trading name of Video Networks Limited of 205 Holland Park Avenue, London W11 4XB and registered in England and Wales (No. 2740910). This email may contain confidential and privileged information and is intended for the named or authorised recipients only. If you are not the named or authorised recipient of this email, please note that any copying, distribution, disclosure or use of its contents is strictly prohibited. If you have received this email in error please notify the sender immediately and then destroy it. The views expressed in this email are not necessarily those held by Video Networks Limited and we do not accept any liability for any action taken in reliance on the contents of this message. We do not guarantee that the integrity of this email has been maintained, nor that it is free of viruses, interceptions or interference. _______________________________________________________________________ This email has been scanned for all known viruses by the MessageLabs Email Security System. _______________________________________________________________________ ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_idv37&alloc_id865&op=click _______________________________________________ Net-snmp-coders mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/net-snmp-coders
