Hi Anuz,
I have google before, but without success.
This file don't seems to contain the timeouts.
I have been searching for the timeouts of TCP connections for my
monograph and I have found the following struct in file
net/netfilter/nf_conntrack_proto_tcp.c:
73 static unsigned int tcp_timeouts[TCP_CONNTRACK_MAX] __read_mostly = {
74 [TCP_CONNTRACK_SYN_SENT] = 2 MINS,
75 [TCP_CONNTRACK_SYN_RECV] = 60 SECS,
76 [TCP_CONNTRACK_ESTABLISHED] = 5 DAYS,
77 [TCP_CONNTRACK_FIN_WAIT] = 2 MINS,
78 [TCP_CONNTRACK_CLOSE_WAIT] = 60 SECS,
79 [TCP_CONNTRACK_LAST_ACK] = 30 SECS,
80 [TCP_CONNTRACK_TIME_WAIT] = 2 MINS,
81 [TCP_CONNTRACK_CLOSE] = 10 SECS,
82 [TCP_CONNTRACK_SYN_SENT2] = 2 MINS,
83 };
So I don't understood it well. I need to know:
(a) in how much time I need to receive an ACK after I send an SYN;
(b) how much time the connection is closed if any packet is send by a node.
Maybe there are a documentation about these constants?
Thank very much!
On Thu, Apr 19, 2012 at 12:30 PM, Anuz Pratap Singh Tomar
<chambilkethakur@xxxxxxxxx> wrote:
>
>
> On Thu, Apr 19, 2012 at 2:49 PM, Chir0n <io.chir0n@xxxxxxxxx> wrote:
>>
>> Hello,
>>
>> Can someone tell me where I can find out the code snippet that has the
>> 3 way handshake values?
>>
> after doing a bit of googling, you can easily reach to this location:
> http://lxr.linux.no/#linux+v3.3.2/net/ipv4/tcp_input.c#L5801
>
> This is where state machine is implemented for TCP.
>
>
>
>>
>> Best regards,
>>
>> Chiron
>>
>> _______________________________________________
>> Kernelnewbies mailing list
>> Kernelnewbies@xxxxxxxxxxxxxxxxx
>> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
>
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