ping_42

The ping command in c

##allowed functions :

getpid : returns the process ID of the calling process.
getuid : returns the real user ID of the calling process.
getaddrinfo : convert domain names, hostnames, and IP addresses between human-readable text representations and structured binary formats for the operating system's networking API.
gettimeofday : can get and set the time as well as a timezone.
inet_ntop : convert IPv4 and IPv6 addresses from binary to text form.
inet_pton : convert IPv4 and IPv6 addresses from text to binary form
exit
signal : sets the disposition of the signal signum to handler, which is either SIG_IGN, SIG_DFL, or the address of a programmer-defined function (a "signal handler")
alarm : arranges for a SIGALRM signal to be delivered to the calling process in seconds seconds.
setsockopt : manipulate options for the socket referred to by the file descriptor sockfd. Options may exist at multiple protocol levels; they are always present at the uppermost socket level.
recvmsg : receive a message from a socket
sendto : send a message on a socket
socket : create an endpoint for communication

##References

gbersac/ping_42