hi
i have one doubt
i configured the tun0 interface after the open systemcall
i.e
"tuntapfd=open("\den\net\tun"........................
the interface is up and running
next i configured it using the following:
"ifconfig %s 10.8.0.2 pointopoint 10.8.0.1 mtu 1500"
next i created a simple udp server which sends a message like"hello" to the tun0 interface
In my tunnel code,if i want to read from the /dev/net/tun interface, if i use the following code
"
while(1)
{
len=read(tuntapfd,temp_buffer,sizeof(temp_buffer));//hangs here
if(len>=0)
{
printf("\n recieved.........\n");
}
else
{
printf("failed
........");
}
"
i know that i shud be using select for reading and shud be non blocking,but i just wantd to test it with a simple read statement
the problem is that the program hangs???????
the data it seems has not been transferred to the /dev/net/tun character device file
please help me out on this
what my doubt exactly is that if i send data say"hello" on the tun0 interface ,will my code be able to use it or access it using the /dev/net/tun character file because this is what i have been trying with no success
how should i proceed with this?
thanks
karan
