man functions

socket: http://manpagesfr.free.fr/man/man2/socket.2.html
open: http://manpagesfr.free.fr/man/man2/open.2.html
close: https://man7.org/linux/man-pages/man2/close.2.html

setsockopt: https://linux.die.net/man/2/setsockopt
getsockname: https://man7.org/linux/man-pages//man2/getsockname.2.html
getprotobyname: https://linux.die.net/man/3/getprotobyname
  (obsolete!) gethostbyname: http://manpagesfr.free.fr/man/man3/gethostbyname.3.html
getaddrinfo: http://manpagesfr.free.fr/man/man3/getaddrinfo.3.html

bind: http://manpagesfr.free.fr/man/man2/bind.2.html
connect: https://man7.org/linux/man-pages/man2/connect.2.html
listen: http://manpagesfr.free.fr/man/man2/listen.2.html
accept: http://manpagesfr.free.fr/man/man2/accept.2.html

htons: https://linux.die.net/man/3/htons
htonl: 
ntohs: 
ntohl: 

inet_addr: https://man7.org/linux/man-pages/man3/inet_addr.3p.html
inet_ntoa: 

send: http://manpagesfr.free.fr/man/man2/send.2.html
recv: http://manpagesfr.free.fr/man/man2/recv.2.html

exit: http://manpagesfr.free.fr/man/man3/exit.3.html
signal: https://man7.org/linux/man-pages/man2/signal.2.html
lseek: http://manpagesfr.free.fr/man/man2/lseek.2.html
fstat: https://linux.die.net/man/2/fstat

read: http://manpagesfr.free.fr/man/man2/read.2.html
write: http://manpagesfr.free.fr/man/man2/write.2.html
fcntl: https://linux.die.net/man/2/fcntl

select: http://manpagesfr.free.fr/man/man2/select.2.html
FD_CLR: 
FD_ISSET: 
FD_SET: 
FD_ZERO: 

  FD_COPY: pas de doc