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# IPSocket is the super class of TCPSocket and UDPSocket.
class IPSocket < BasicSocket
# Lookups the IP address of *host*.
#
# require 'socket'
#
# IPSocket.getaddress("localhost") #=> "127.0.0.1"
# IPSocket.getaddress("ip6-localhost") #=> "::1"
#
def self.getaddress: (String host) -> String
public
# Returns the local address as an array which contains address_family, port,
# hostname and numeric_address.
#
# If `reverse_lookup` is `true` or `:hostname`, hostname is obtained from
# numeric_address using reverse lookup. Or if it is `false`, or `:numeric`,
# hostname is same as numeric_address. Or if it is `nil` or omitted, obeys to
# `ipsocket.do_not_reverse_lookup`. See `Socket.getaddrinfo` also.
#
# TCPSocket.open("www.ruby-lang.org", 80) {|sock|
# p sock.addr #=> ["AF_INET", 49429, "hal", "192.168.0.128"]
# p sock.addr(true) #=> ["AF_INET", 49429, "hal", "192.168.0.128"]
# p sock.addr(false) #=> ["AF_INET", 49429, "192.168.0.128", "192.168.0.128"]
# p sock.addr(:hostname) #=> ["AF_INET", 49429, "hal", "192.168.0.128"]
# p sock.addr(:numeric) #=> ["AF_INET", 49429, "192.168.0.128", "192.168.0.128"]
# }
#
def addr: (?(boolish | :hostname | :numeric) reverse_lookup) -> [String, Integer, String, String]
# Return a string describing this IPSocket object.
#
def inspect: () -> String
# Returns the remote address as an array which contains address_family, port,
# hostname and numeric_address. It is defined for connection oriented socket
# such as TCPSocket.
#
# If `reverse_lookup` is `true` or `:hostname`, hostname is obtained from
# numeric_address using reverse lookup. Or if it is `false`, or `:numeric`,
# hostname is same as numeric_address. Or if it is `nil` or omitted, obeys to
# `ipsocket.do_not_reverse_lookup`. See `Socket.getaddrinfo` also.
#
# TCPSocket.open("www.ruby-lang.org", 80) {|sock|
# p sock.peeraddr #=> ["AF_INET", 80, "carbon.ruby-lang.org", "221.186.184.68"]
# p sock.peeraddr(true) #=> ["AF_INET", 80, "carbon.ruby-lang.org", "221.186.184.68"]
# p sock.peeraddr(false) #=> ["AF_INET", 80, "221.186.184.68", "221.186.184.68"]
# p sock.peeraddr(:hostname) #=> ["AF_INET", 80, "carbon.ruby-lang.org", "221.186.184.68"]
# p sock.peeraddr(:numeric) #=> ["AF_INET", 80, "221.186.184.68", "221.186.184.68"]
# }
#
def peeraddr: (?(boolish | :hostname | :numeric) reverse_lookup) -> [String, Integer, String, String]
# Receives a message and return the message as a string and an address which the
# message come from.
#
# *maxlen* is the maximum number of bytes to receive.
#
# *flags* should be a bitwise OR of Socket::MSG_* constants.
#
# ipaddr is same as IPSocket#{peeraddr,addr}.
#
# u1 = UDPSocket.new
# u1.bind("127.0.0.1", 4913)
# u2 = UDPSocket.new
# u2.send "uuuu", 0, "127.0.0.1", 4913
# p u1.recvfrom(10) #=> ["uuuu", ["AF_INET", 33230, "localhost", "127.0.0.1"]]
#
#
def recvfrom: (Integer maxlen, ?Integer flags) -> [String, [String, Integer, String, String]]
end
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