Re: How to monitor TCP Resets using Sockets

Wow..that is strange. Can you show some code that reproduces this?

Maybe you are getting a SIGHUP signal?

You appear to be describing what would be called an "out of band" message - something that that is not coming via the socket?

Comment on Re: How to monitor TCP Resets using Sockets

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Re^2: How to monitor TCP Resets using Sockets by zwon (Abbot) on Dec 31, 2011 at 09:32 UTC
Oh, what a mess. SIGHUP is generally have nothing to do with sockets, in case of out-of-band data you would receive SIGURG, and this out-of-band data will come via socket. But OP is seems concerned about TCP packets with RST flag set, which is not the same as OOB. I'm not sure why OP needs it, but if he really needs to count TCP packets with RST flag he can use something like tcpdump, or Net::Pcap, or learn about raw sockets. I would use C to deal with it, but it depends on exact problem, which OP doesn't share with us.	[reply]

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Re^2: How to monitor TCP Resets using Sockets
by zwon (Abbot) on Dec 31, 2011 at 09:32 UTC

Oh, what a mess. SIGHUP is generally have nothing to do with sockets, in case of out-of-band data you would receive SIGURG, and this out-of-band data will come via socket.

But OP is seems concerned about TCP packets with RST flag set, which is not the same as OOB. I'm not sure why OP needs it, but if he really needs to count TCP packets with RST flag he can use something like tcpdump, or Net::Pcap, or learn about raw sockets. I would use C to deal with it, but it depends on exact problem, which OP doesn't share with us.

[reply]