Module utils 

Functions

box_future

find_free_tcp_port

find_free_udp_port

get_platform

get_version_number

host_port_pair

is_tcp_port_available

is_udp_port_available

proto_to_socket_addr

retry_notify_with_deadline

socket_addr_to_proto

split_host_port

to_socket_addr

trace_message

udp_connect

Create a UDP socket and connect to addr