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Source Code

# File webrick/utils.rb, line 59
def create_listeners(address, port, logger=nil)
  unless port
    raise ArgumentError, "must specify port"
  end
  res = Socket::getaddrinfo(address, port,
                            Socket::AF_UNSPEC,   # address family
                            Socket::SOCK_STREAM, # socket type
                            0,                   # protocol
                            Socket::AI_PASSIVE)  # flag
  last_error = nil
  sockets = []
  res.each{|ai|
    begin
      logger.debug("TCPServer.new(#{ai[3]}, #{port})") if logger
      sock = TCPServer.new(ai[3], port)
      port = sock.addr[1] if port == 0
      Utils::set_close_on_exec(sock)
      sockets << sock
    rescue => ex
      logger.warn("TCPServer Error: #{ex}") if logger
      last_error  = ex
    end
  }
  raise last_error if sockets.empty?
  return sockets
end