Graph number of concurrent HTTP connections?

[Hugo van der Kooij <hugo.van.der.kooij () qi nl>]

Hi,

I have been looking into an issue where I suspect that the client can’t connect to a proxy server due to the limit of 
concurrent connections.
As I have a full packet capture of such an incident I was looking for a way to make a graph of the amount of 
connections over the duration of the packet capture.

I could do a rough estimate if I filter with:
((tcp.flags.syn == 1) || (tcp.flags.fin == 1) || (tcp.flags.reset == 1)) && (tcp.dstport == 80)

But is there a way to calculate the concurrent sessions?

Regards,
Hugo.


Met vriendelijke groet / With kind regards,



Hugo van der Kooij
network engineer

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