#pragma once

//###########################################################################
//
// L4STEAMNET -- the Steam internet transport (BT_STEAM only).
//
// ISteamNetworkingSockets with FakeIP + SDR behind the L4NET.CPP wire
// seam: connections carry the engine's exact TCP byte stream as reliable
// Steam messages, re-assembled into per-connection rings so the engine's
// nonblocking recv semantics hold (empty -> WSAEWOULDBLOCK, peer-closed
// -> 0).  Handles are pseudo-SOCKETs (0x5EA0xxxx) so L4Host and every
// call site above the seam are identical on both wires; the peer address
// reported through CheckSocket is the peer's FAKE IPv4:port, so the
// engine's roster matching works against a lobby-built egg whose
// [pilots] carry FakeIPs.
//
// Install: env BT_STEAM_NET=1 (set by the lobby launch path) -- needs the
// Steam client running and content\steam_appid.txt (written with the 480
// Spacewar test id if absent).  Everything degrades gracefully: no Steam
// -> inactive -> pure Winsock.
//
// Ports: FakeIP port index 0 = the CONSOLE channel, 1 = the GAME channel
// (mirroring the arcade console-port / game-port=console+1 convention).
//
//###########################################################################

#include <winsock2.h>

int
	BTSteamNet_Install();				// 0 = up (FakeIP allocated)
int
	BTSteamNet_Active();
void
	BTSteamNet_Pump();					// callbacks + rx drain (game thread)

//
// The wire-seam surface (BTNet* wrappers in L4NET.CPP + the marshal).
//
int
	BTSteamNet_Owns(SOCKET wire_socket);
int
	BTSteamNet_Send(SOCKET wire_socket, const char *data, int length);
int
	BTSteamNet_Recv(SOCKET wire_socket, char *buffer, int capacity);
SOCKET
	BTSteamNet_Accept(SOCKET listener_socket);
void
	BTSteamNet_Close(SOCKET wire_socket);
int
	BTSteamNet_PeerAddress(SOCKET wire_socket, SOCKADDR_IN *out);

//
// Connection establishment (the OpenConnection TCP_OPEN delegate + the
// marshal): True when the IPv4 is a Steam FakeIP.
//
int
	BTSteamNet_IsFakeAddress(unsigned long internet_address_be);
SOCKET
	BTSteamNet_Connect(unsigned long internet_address_be, int remote_port);

//
// The lobby surface: my identity; my roster token (raw, for the
// GetMyAddress self-match seam).  Roster tokens + the token->identity map
// arrive in the MISSION process via env (BT_FE_MYFAKE / BT_FE_STEAMMAP --
// see the token-table note in the .cpp).
//
unsigned long long
	BTSteamNet_MySteamID();
int
	BTSteamNet_GetFakeAddressRaw(unsigned long *internet_address_be);