@type t() :: %ExICE.Candidate{
  address: :inet.ip_address() | String.t(),
  base_address: :inet.ip_address() | nil,
  base_port: :inet.port_number() | nil,
  foundation: String.t(),
  id: integer(),
  port: :inet.port_number(),
  priority: integer(),
  tcp_type: tcp_type() | nil,
  transport: :udp | :tcp,
  type: type()
}

@type tcp_type() :: :active | :passive | :so

@type type() :: :host | :srflx | :prflx | :relay