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Full Discussion: Message passing from child to parent using pipes
Special Forums IP Networking Message passing from child to parent using pipes Post 302858027 by abhi1988sri on Saturday 28th of September 2013 04:43:45 AM
Old 09-28-2013
Thanks for the reply..sorry if the code is misleading but I was following an online tutorial to learn network programming.

All i want to do is to keep client in a loop until the user types "quit" so I will change while to do-while.
The client enters an infinite loop in which it queries the user which service is being requested. There are two options : echo and time.

The client forks off a child. After the child is forked off, the parent process enters a second loop in which it continually reads and prints out status messages received from the child via a half-duplex pipe.

I hope it clears some part of what I want to implement.

So i thought of :
do
{
if user enters "echo"
then
it will fork off a child, doEcho() but what to do after that..I am not getting as
per the requirement like parents goes in infinte loop and all..
else if user enters "daytime"
then
it will fork off a child , doDayTime() and again the same.what to do/.

}while (user enters exit)

I guess I am following the right track???


Please guide me.

Thanks and Regards

Abhinav
Last edited by abhi1988sri; 09-28-2013 at 05:56 AM..
 

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LEARN ABOUT X11R4

ip-token

IP-TOKEN(8)                                                            Linux                                                           IP-TOKEN(8)

NAME

       ip-token - tokenized interface identifier support

SYNOPSIS

       ip token { COMMAND | help }

       ip token set TOKEN dev DEV

       ip token del dev DEV

       ip token get [ dev DEV ]

       ip token [ list ]

DESCRIPTION

       IPv6 tokenized interface identifier support is used for assigning well-known host-part addresses to nodes whilst still obtaining a global
       network prefix from Router advertisements. The primary target for tokenized identifiers are server platforms where addresses are usually
       manually configured, rather than using DHCPv6 or SLAAC. By using tokenized identifiers, hosts can still determine their network prefix by
       use of SLAAC, but more readily be automatically renumbered should their network prefix change [1]. Tokenized IPv6 Identifiers are described
       in the draft [1]: <draft-chown-6man-tokenised-ipv6-identifiers-02>.

   ip token set - set an interface token
       set the interface token to the kernel.

       TOKEN  the interface identifier token address.

       dev DEV
              the networking interface.

   ip token del - delete an interface token
       delete the interface token from the kernel.

       dev DEV
              the networking interface.

   ip token get - get the interface token from the kernel
       show a tokenized interface identifier of a particular networking device.  Arguments: coincide with the arguments of ip token set but the
       TOKEN must be left out.

   ip token list - list all interface tokens
       list all tokenized interface identifiers for the networking interfaces from the kernel.

SEE ALSO

       ip(8)

AUTHOR

       Manpage by Daniel Borkmann

iproute2                                                            28 Mar 2013                                                        IP-TOKEN(8)
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