Hey guys,
I'm running in almost the same problem as this guy :

Sockets tutorial, datagram sockets example not working for me

Thing is, when running talker, I do write it like this :

Code:
./talker hostname ola
where my hostname is the hostname of my partner.

We're both running MacBookPro's and I get the following error :

Code:
getaddrinfo: nodename nor servname provided, or not known
Any idea what might be happening ?

Works fine for me running both on two terminals on my PC