enum GCProtoBufMsgSrc {
	GCProtoBufMsgSrc_Unspecified = 0;
	GCProtoBufMsgSrc_FromSystem = 1;
	GCProtoBufMsgSrc_FromSteamID = 2;
	GCProtoBufMsgSrc_FromGC = 3;
	GCProtoBufMsgSrc_ReplySystem = 4;
	GCProtoBufMsgSrc_SpoofedSteamID = 5;
}

message CMsgGCRoutingProtoBufHeader {
	optional uint64 dst_gcid_queue = 1;
	optional uint32 dst_gc_dir_index = 2;
}

message CMsgProtoBufHeader {
	optional fixed64 client_steam_id = 1;
	optional int32 client_session_id = 2;
	optional uint32 source_app_id = 3;
	optional fixed64 job_id_source = 10 [default = 18446744073709551615];
	optional fixed64 job_id_target = 11 [default = 18446744073709551615];
	optional string target_job_name = 12;
	optional int32 seq_num = 24;
	optional int32 eresult = 13 [default = 2];
	optional string error_message = 14;
	optional uint32 auth_account_flags = 16;
	optional uint32 token_source = 22;
	optional bool admin_spoofing_user = 23;
	optional int32 transport_error = 17 [default = 1];
	optional uint64 messageid = 18 [default = 18446744073709551615];
	optional uint32 publisher_group_id = 19;
	optional uint32 sysid = 20;
	optional uint64 trace_tag = 21;
	optional uint32 webapi_key_id = 25;
	optional bool is_from_external_source = 26;
	repeated uint32 forward_to_sysid = 27;
	optional uint32 cm_sysid = 28;
	optional uint32 launcher_type = 31 [default = 0];
	optional uint32 realm = 32 [default = 0];
	optional int32 timeout_ms = 33 [default = -1];
	optional string debug_source = 34;
	optional uint32 debug_source_string_index = 35;
	optional uint64 token_id = 36;
	optional .CMsgGCRoutingProtoBufHeader routing_gc = 37;
	optional .GCProtoBufMsgSrc gc_msg_src = 200 [default = GCProtoBufMsgSrc_Unspecified];
	optional uint32 gc_dir_index_source = 201;

	oneof ip_addr {
		uint32 ip = 15;
		bytes ip_v6 = 29;
	}
}