As far as I know SYN retransmissions: with rounding they occur 1, 3, 6, 12, 24, 48, and then 64 seconds apart. I want to do this on different interval time. what is the name of this parameter?
can I control on it in android and windows?
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Windows:
You can only control the first retransmission with HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\ID. After this, the retransmitted SYN packets are dynamically controlled (Source: KB 170359)
Edit:
Per discussion in the comments, it appears that the KB article I referenced is flawed for Windows 7; it seems that changing SYN retransmission parameters is not supported.
Mike Pennington
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is there any name for this parameter ? only for syn retransmission? is it the RTO? – Avihai Marchiano Jul 29 '12 at 12:41
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It is called `TCPInitialRtt`, used for the first SYN retransmission. RTO is controlled indirectly with `TcpMaxDataRetransmissions`, but that isn't a timeout per-se... it's the number of attempts before Windows aborts the connection – Mike Pennington Jul 29 '12 at 12:42
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I dont see this key. do i need to add it? dosnt it part of the TCP RFC? do you know how to do it in android? or a good search key words for this. Thank you!!!! – Avihai Marchiano Jul 29 '12 at 12:48
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Windows 7 enterprise. – Avihai Marchiano Jul 29 '12 at 12:51
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I haven't found android information, you might try [so] for that question. Add this to Win7 Enterprise if it isn't there. – Mike Pennington Jul 29 '12 at 12:54
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added, disable and enable the adapter and restart the computer, dosnt take affect. any idea? thank you!!!! – Avihai Marchiano Jul 29 '12 at 13:02
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Have you rebooted yet? – Mike Pennington Jul 29 '12 at 13:09
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sure. in additional in this url - http://technet.microsoft.com/fr-fr/library/cc739819%28v=ws.10%29 its in second so also tried this :( – Avihai Marchiano Jul 29 '12 at 13:13
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seems that not rellevant for windows7 - http://emeowctrl.wordpress.com/2012/04/24/200/ – Avihai Marchiano Jul 29 '12 at 13:24
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well, it's certainly possible, but it means the MSDN KB article is flawed – Mike Pennington Jul 29 '12 at 13:24