r5sdk/src/networksystem/sm_protocol.h

#pragma once
//=============================================================================
enum
{
	CONNECTIONLESS_HEADER = 0xffffffff,
};

//=============================================================================
// Connectionless messages
enum
{
	c2s_connect = 1,
	c2s_num_messages
};

enum
{
	s2c_connect_accept = 1,
	s2c_connect_reject,

	s2c_num_messages
};

//=============================================================================
enum NetworkMessageGroup_t
{
	net_group_networksystem = 0
};

//=============================================================================
// NetworkSystem internal messages for use during valid connection
enum SystemNetworkMessageType_t
{
	net_nop 		= 0,			// nop command used for padding
	net_disconnect	= 1,			// disconnect (last message in connection)

	net_num_messages
};