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Linux/ip.h library

Hello ,

For a project we are using ip.h library of the linux.
As far as i check the library , http://www.cse.scu.edu/~dclark/am_256_graph_theory/linux_2_6_stack/linux_2ip_8h-source.html , i could not find a way to check Window size , is there any way to read complete packet hex with this library and get the window size of packet hex like given below :

			long dec_Window_size = std::stol (packet_hex.substr(96,4),nullptr,16);

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arnold

Window size is control on the transport/TCP.h layer if not mistaken.
In ip.h you have the mtu.

FireBall

ASKER

it seems not exist in there

https://github.com/hhucn/inetmanet/blob/master/src/transport/tcp/TCP.h

arnold

See line 519, 630,631

http://www.cse.scu.edu/~dclark/am_256_graph_theory/linux_2_6_stack/net_2tcp_8h-source.html

The windowing is handled within the transport .......

The packets are reassembled ..........

arnold

You need to include Linux/TCP.h that are system wide, the link you are posting is of a modified alternate use TCP.h that either modifies or adds to ....

FireBall

ASKER

should i read the data container on udp / tcp with udp.h & tcp.h libraries ?

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arnold

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arnold

I am unsure on what you are after, hopefully this http://www.diag.com/reports/TCPWindows.html covers the scaling/shifting that might refocus ...

Window size/scaling is set in the kernel.
Your application will be dependent/subordinate..

Are you trying to "predict" such that your app will ..
Though your app analyzes received data, what is the significance of window size for your analysis?

FireBall

ASKER

If you should help me to find a sample i will be glad for this because i could not.
Thank you