pub const PROTOCOL_VERSION_2: &str = "2.0";
pub const PROTOCOL_VERSION_1: &str = "1.0";
pub const FALLBACK_PROTOCOL_VERSION: &str = PROTOCOL_VERSION_1;
pub const DEFAULT_MULTICAST: &str = "224.0.0.167";
pub const DEFAULT_PORT: u16 = 53317;
pub const DEFAULT_HTTP_PORT: u16 = DEFAULT_PORT + 1;