option optimize_for = SPEED; option cc_generic_services = false; message CMsgSteamNetworkingIdentity { optional fixed64 steam_id = 16; optional string xbox_pairwise_id = 17; optional bytes generic_bytes = 2; optional string generic_string = 3; optional bytes ipv6_and_port = 4; } message CMsgSteamDatagramCertificate { enum EKeyType { INVALID = 0; ED25519 = 1; } optional .CMsgSteamDatagramCertificate.EKeyType key_type = 1 [default = INVALID]; optional bytes key_data = 2; optional fixed64 legacy_steam_id = 4; optional .CMsgSteamNetworkingIdentity identity = 11; repeated fixed32 gameserver_datacenter_ids = 5; optional fixed32 time_created = 8; optional fixed32 time_expiry = 9; optional uint32 app_id = 10; } message CMsgSteamDatagramCertificateSigned { optional bytes cert = 4; optional fixed64 ca_key_id = 5; optional bytes ca_signature = 6; }