steamnetworkingsockets_messages_certs.proto

Protobufs / steamnetworkingsockets_messages_certs.proto

CS2 build 25218825 · Steam date 2026-09-09 · platform windows-x86_64 · schema format 2.2

Group: GC and Steam SDKMessages: 4 top-level, 4 totalEnums: 0 top-level, 1 total

Imports: none

Enums

This file declares no top-level enums.

Messages

CMsgSteamNetworkingIdentityLegacyBinary

Msg Steam Networking Identity Legacy Binary MsgSteam SteamNetworking NetworkingIdentity IdentityLegacy LegacyBinary generic_bytes generic_string ipv6_and_port steam_id

Referenced by (4): CMsgSteamDatagramCertificate, CMsgSteamDatagramConnectionClosed, CMsgSteamSockets_UDP_ConnectOK, CMsgSteamSockets_UDP_ConnectRequest

Field	Number	Label	Type	Default	Description
generic_bytes	2	optional	bytes
generic_string	3	optional	string
ipv6_and_port	4	optional	bytes
steam_id	16	optional	fixed64

CMsgSteamDatagramCertificate

Msg Steam Datagram Certificate MsgSteam SteamDatagram DatagramCertificate key_type key_data legacy_steam_id gameserver_datacenter_ids time_created time_expiry app_ids legacy_identity_binary identity_string ip_addresses

Referenced by (1): CMsgSteamDatagramCertificateRequest

Field	Number	Label	Type	Default	Description
key_type	1	optional	CMsgSteamDatagramCertificate.EKeyType
key_data	2	optional	bytes
legacy_steam_id	4	optional	fixed64
gameserver_datacenter_ids	5	repeated	fixed32
time_created	8	optional	fixed32
time_expiry	9	optional	fixed32
app_ids	10	repeated	uint32
legacy_identity_binary	11	optional	CMsgSteamNetworkingIdentityLegacyBinary
identity_string	12	optional	string
ip_addresses	13	repeated	string

CMsgSteamDatagramCertificate.EKeyType

Key Type KeyType INVALID ED25519

Name	Number	Message
INVALID	0
ED25519	1

CMsgSteamDatagramCertificateSigned

Msg Steam Datagram Certificate Signed MsgSteam SteamDatagram DatagramCertificate CertificateSigned private_key_data cert ca_key_id ca_signature

Referenced by (12): CMsgSteamDatagramConnectOK, CMsgSteamDatagramConnectRequest, CMsgSteamDatagramGameserverPingRequestEnvelope, CMsgSteamDatagramGameserverSessionRequest, CMsgSteamDatagramP2PSessionRequest, CMsgSteamDatagramSignedGameCoordinatorServerLogin, CMsgSteamDatagramSignedMessageGeneric, CMsgSteamDatagramSignedRelayAuthTicket, CMsgSteamNetworkingP2PRendezvous.ConnectOK, CMsgSteamNetworkingP2PRendezvous.ConnectRequest, CMsgSteamSockets_UDP_ConnectOK, CMsgSteamSockets_UDP_ConnectRequest

Field	Number	Label	Type	Default	Description
private_key_data	1	optional	bytes
cert	4	optional	bytes
ca_key_id	5	optional	fixed64
ca_signature	6	optional	bytes

CMsgSteamDatagramCertificateRequest

Msg Steam Datagram Certificate Request MsgSteam SteamDatagram DatagramCertificate CertificateRequest cert

Field	Number	Label	Type	Default	Description
cert	1	optional	CMsgSteamDatagramCertificate

Reference graph

Message reference graph (2 edges)

flowchart LR
    n0["CMsgSteamDatagramCertificate"]
    n1["CMsgSteamNetworkingIdentityLegacyBinary"]
    n0 --> n1
    n2["CMsgSteamDatagramCertificateRequest"]
    n2 --> n0