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# frozen_string_literal: true
module Gitlab
class TcpChecker
attr_reader :remote_host, :remote_port, :local_host, :local_port, :error
def initialize(remote_host, remote_port, local_host = nil, local_port = nil)
@remote_host = remote_host
@remote_port = remote_port
@local_host = local_host
@local_port = local_port
end
def local
join_host_port(local_host, local_port)
end
def remote
join_host_port(remote_host, remote_port)
end
def check(timeout: 10)
Socket.tcp(
remote_host, remote_port,
local_host, local_port,
connect_timeout: timeout
) do |sock|
@local_port, @local_host = Socket.unpack_sockaddr_in(sock.local_address)
@remote_port, @remote_host = Socket.unpack_sockaddr_in(sock.remote_address)
end
true
rescue StandardError => err
@error = err
false
end
private
def join_host_port(host, port)
host = "[#{host}]" if host.include?(':')
"#{host}:#{port}"
end
end
end
|
