Hi ,
* <[EMAIL PROTECTED]> wrote from a remote bunker :
>
> I want to know how two identical packets are differentiated and
> given to the appropriate applications - to be more clear, suppose two
> browsers are opened in the same machine, and both issue the same 'GET'
> HTTP command to the same website. Then, the network packets will be
> having the same source and destination address, and the same port
> number(80, here). Now, when these two packets are sent, and the
> resultant packets arrive to our machine, which again would be
> identical, how is it that the kernel differentiates between the
> packets and sends the correct one to the appropriate browser??
The destination port is same , but did you think about the source port,
they are not same.
See the output of netstat -t after 2 simultaneous connections to
google.com.
dushy@ghost (Tue Aug 20) ~> netstat -t
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 ghost.archeanlabs.:1153 www.google.com:www ESTABLISHED
tcp 0 0 ghost.archeanlabs.:1155 www.google.com:www ESTABLISHED
tcp 0 618 ghost.archeanlabs.:1156 www.google.com:www ESTABLISHED
As you can see the source port differs for each request. Read TCP/IP
Illustrated Volume 1 by Richard Stevens.
cheers
dushyanth
--
Mind your own business, Mr. Spock. I'm sick of your halfbreed
interference.
http://symonds.net/~dushy
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