tron@2186: /* $Id$ */
tron@2186: 
celestar@6121: /**
celestar@6121:  * @file network_udp.cpp This file handles the UDP related communication.
celestar@6121:  *
celestar@6121:  * This is the GameServer <-> MasterServer and GameServer <-> GameClient
celestar@6121:  * communication before the game is being joined.
celestar@6121:  */
celestar@6121: 
Darkvater@4826: #ifdef ENABLE_NETWORK
Darkvater@4826: 
rubidium@5469: #include "../stdafx.h"
rubidium@5469: #include "../debug.h"
rubidium@8140: #include "../date_func.h"
rubidium@8139: #include "../map_func.h"
truelight@543: #include "network_gamelist.h"
truelight@764: #include "network_udp.h"
rubidium@9428: #include "network_internal.h"
rubidium@9844: #include "core/host.h"
rubidium@5469: #include "../variables.h"
rubidium@5469: #include "../newgrf_config.h"
rubidium@8132: #include "../core/endian_func.hpp"
rubidium@8214: #include "../string_func.h"
rubidium@10208: #include "../company_base.h"
rubidium@10208: #include "../company_func.h"
rubidium@8270: #include "../settings_type.h"
rubidium@9451: #include "../rev.h"
truelight@543: 
rubidium@5469: #include "core/udp.h"
rubidium@5469: 
truelight@764: enum {
peter1138@2861: 	ADVERTISE_NORMAL_INTERVAL = 30000, // interval between advertising in ticks (15 minutes)
rubidium@4344: 	ADVERTISE_RETRY_INTERVAL  =   300, // readvertise when no response after this many ticks (9 seconds)
rubidium@4344: 	ADVERTISE_RETRY_TIMES     =     3  // give up readvertising after this much failed retries
truelight@764: };
truelight@543: 
rubidium@5619: NetworkUDPSocketHandler *_udp_client_socket; ///< udp client socket
rubidium@5619: NetworkUDPSocketHandler *_udp_server_socket; ///< udp server socket
rubidium@5619: NetworkUDPSocketHandler *_udp_master_socket; ///< udp master socket
truelight@543: 
rubidium@5619: ///*** Communication with the masterserver ***/
rubidium@5619: 
rubidium@5619: class MasterNetworkUDPSocketHandler : public NetworkUDPSocketHandler {
rubidium@5619: protected:
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_MASTER_ACK_REGISTER);
rubidium@5619: public:
rubidium@5619: 	virtual ~MasterNetworkUDPSocketHandler() {}
rubidium@5619: };
rubidium@5619: 
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Master, PACKET_UDP_MASTER_ACK_REGISTER)
rubidium@5619: {
rubidium@5619: 	_network_advertise_retries = 0;
peter1138@7372: 	DEBUG(net, 2, "[udp] advertising on master server successful");
rubidium@5619: 
rubidium@5619: 	/* We are advertised, but we don't want to! */
rubidium@9481: 	if (!_settings_client.network.server_advertise) NetworkUDPRemoveAdvertise();
rubidium@5619: }
rubidium@5619: 
rubidium@5619: ///*** Communication with clients (we are server) ***/
rubidium@5619: 
rubidium@5619: class ServerNetworkUDPSocketHandler : public NetworkUDPSocketHandler {
rubidium@5619: protected:
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_CLIENT_FIND_SERVER);
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_CLIENT_DETAIL_INFO);
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_CLIENT_GET_NEWGRFS);
rubidium@5619: public:
rubidium@5619: 	virtual ~ServerNetworkUDPSocketHandler() {}
rubidium@5619: };
rubidium@5619: 
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Server, PACKET_UDP_CLIENT_FIND_SERVER)
truelight@543: {
truelight@543: 	// Just a fail-safe.. should never happen
rubidium@9451: 	if (!_network_udp_server) {
truelight@543: 		return;
rubidium@9451: 	}
rubidium@9451: 
rubidium@9451: 	NetworkGameInfo ngi;
rubidium@9451: 
rubidium@9451: 	/* Update some game_info */
rubidium@9451: 	ngi.clients_on     = _network_game_info.clients_on;
rubidium@9451: 	ngi.start_date     = _network_game_info.start_date;
rubidium@9451: 
rubidium@9451: 	ngi.server_lang    = _settings_client.network.server_lang;
rubidium@9451: 	ngi.use_password   = !StrEmpty(_settings_client.network.server_password);
rubidium@9451: 	ngi.clients_max    = _settings_client.network.max_clients;
rubidium@10207: 	ngi.companies_on   = ActiveCompanyCount();
rubidium@9451: 	ngi.companies_max  = _settings_client.network.max_companies;
rubidium@9451: 	ngi.spectators_on  = NetworkSpectatorCount();
rubidium@9451: 	ngi.spectators_max = _settings_client.network.max_spectators;
rubidium@9451: 	ngi.game_date      = _date;
rubidium@9451: 	ngi.map_width      = MapSizeX();
rubidium@9451: 	ngi.map_height     = MapSizeY();
rubidium@9451: 	ngi.map_set        = _settings_game.game_creation.landscape;
rubidium@9451: 	ngi.dedicated      = _network_dedicated;
rubidium@9451: 	ngi.grfconfig      = _grfconfig;
rubidium@9451: 
skidd13@10310: 	strecpy(ngi.map_name, _network_game_info.map_name, lastof(ngi.map_name));
skidd13@10310: 	strecpy(ngi.server_name, _settings_client.network.server_name, lastof(ngi.server_name));
skidd13@10310: 	strecpy(ngi.server_revision, _openttd_revision, lastof(ngi.server_revision));
truelight@543: 
rubidium@5898: 	Packet packet(PACKET_UDP_SERVER_RESPONSE);
rubidium@9451: 	this->Send_NetworkGameInfo(&packet, &ngi);
truelight@543: 
truelight@543: 	// Let the client know that we are here
rubidium@5898: 	this->SendPacket(&packet, client_addr);
truelight@543: 
Darkvater@5380: 	DEBUG(net, 2, "[udp] queried from '%s'", inet_ntoa(client_addr->sin_addr));
truelight@543: }
truelight@543: 
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Server, PACKET_UDP_CLIENT_DETAIL_INFO)
truelight@638: {
truelight@638: 	// Just a fail-safe.. should never happen
tron@4077: 	if (!_network_udp_server) return;
truelight@638: 
rubidium@5898: 	Packet packet(PACKET_UDP_SERVER_DETAIL_INFO);
truelight@638: 
truelight@638: 	/* Send the amount of active companies */
rubidium@5900: 	packet.Send_uint8 (NETWORK_COMPANY_INFO_VERSION);
rubidium@10207: 	packet.Send_uint8 (ActiveCompanyCount());
truelight@638: 
truelight@638: 	/* Fetch the latest version of everything */
truelight@638: 	NetworkPopulateCompanyInfo();
truelight@638: 
rubidium@10207: 	Company *company;
rubidium@9646: 	byte current = 0;
rubidium@10207: 	/* Go through all the companies */
rubidium@10207: 	FOR_ALL_COMPANIES(company) {
truelight@638: 		current++;
truelight@638: 
truelight@638: 		/* Send the information */
rubidium@5900: 		packet.Send_uint8 (current);
truelight@638: 
rubidium@10207: 		packet.Send_string(_network_company_info[company->index].company_name);
rubidium@10207: 		packet.Send_uint32(_network_company_info[company->index].inaugurated_year);
rubidium@10207: 		packet.Send_uint64(_network_company_info[company->index].company_value);
rubidium@10207: 		packet.Send_uint64(_network_company_info[company->index].money);
rubidium@10207: 		packet.Send_uint64(_network_company_info[company->index].income);
rubidium@10207: 		packet.Send_uint16(_network_company_info[company->index].performance);
truelight@638: 
tron@4077: 		/* Send 1 if there is a passord for the company else send 0 */
rubidium@10207: 		packet.Send_bool  (!StrEmpty(_network_company_info[company->index].password));
tron@1019: 
rubidium@9646: 		for (int i = 0; i < NETWORK_VEHICLE_TYPES; i++) {
rubidium@10207: 			packet.Send_uint16(_network_company_info[company->index].num_vehicle[i]);
truelight@638: 		}
truelight@638: 
rubidium@9646: 		for (int i = 0; i < NETWORK_STATION_TYPES; i++) {
rubidium@10207: 			packet.Send_uint16(_network_company_info[company->index].num_station[i]);
truelight@638: 		}
truelight@638: 	}
Darkvater@4880: 
rubidium@5898: 	this->SendPacket(&packet, client_addr);
truelight@638: }
truelight@638: 
rubidium@5339: /**
rubidium@5339:  * A client has requested the names of some NewGRFs.
rubidium@5339:  *
rubidium@5339:  * Replying this can be tricky as we have a limit of SEND_MTU bytes
rubidium@5339:  * in the reply packet and we can send up to 100 bytes per NewGRF
rubidium@5339:  * (GRF ID, MD5sum and NETWORK_GRF_NAME_LENGTH bytes for the name).
rubidium@5339:  * As SEND_MTU is _much_ less than 100 * NETWORK_MAX_GRF_COUNT, it
rubidium@5339:  * could be that a packet overflows. To stop this we only reply
rubidium@5339:  * with the first N NewGRFs so that if the first N + 1 NewGRFs
rubidium@5339:  * would be sent, the packet overflows.
rubidium@5339:  * in_reply and in_reply_count are used to keep a list of GRFs to
rubidium@5339:  * send in the reply.
rubidium@5339:  */
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Server, PACKET_UDP_CLIENT_GET_NEWGRFS)
rubidium@5339: {
rubidium@5339: 	uint8 num_grfs;
rubidium@5339: 	uint i;
rubidium@5339: 
rubidium@5339: 	const GRFConfig *in_reply[NETWORK_MAX_GRF_COUNT];
rubidium@5339: 	uint8 in_reply_count = 0;
glx@9146: 	size_t packet_len = 0;
rubidium@5339: 
Darkvater@5380: 	DEBUG(net, 6, "[udp] newgrf data request from %s:%d", inet_ntoa(client_addr->sin_addr), ntohs(client_addr->sin_port));
rubidium@5339: 
rubidium@5900: 	num_grfs = p->Recv_uint8 ();
rubidium@5339: 	if (num_grfs > NETWORK_MAX_GRF_COUNT) return;
rubidium@5339: 
rubidium@5339: 	for (i = 0; i < num_grfs; i++) {
rubidium@5339: 		GRFConfig c;
rubidium@5339: 		const GRFConfig *f;
rubidium@5339: 
rubidium@5619: 		this->Recv_GRFIdentifier(p, &c);
rubidium@5339: 
rubidium@5339: 		/* Find the matching GRF file */
rubidium@5339: 		f = FindGRFConfig(c.grfid, c.md5sum);
rubidium@5339: 		if (f == NULL) continue; // The GRF is unknown to this server
rubidium@5339: 
rubidium@5339: 		/* If the reply might exceed the size of the packet, only reply
rubidium@5341: 		 * the current list and do not send the other data.
rubidium@5341: 		 * The name could be an empty string, if so take the filename. */
rubidium@5341: 		packet_len += sizeof(c.grfid) + sizeof(c.md5sum) +
tron@5638: 				min(strlen((f->name != NULL && !StrEmpty(f->name)) ? f->name : f->filename) + 1, (size_t)NETWORK_GRF_NAME_LENGTH);
rubidium@5339: 		if (packet_len > SEND_MTU - 4) { // 4 is 3 byte header + grf count in reply
rubidium@5339: 			break;
rubidium@5339: 		}
rubidium@5339: 		in_reply[in_reply_count] = f;
rubidium@5339: 		in_reply_count++;
rubidium@5339: 	}
rubidium@5339: 
rubidium@5339: 	if (in_reply_count == 0) return;
rubidium@5339: 
rubidium@5898: 	Packet packet(PACKET_UDP_SERVER_NEWGRFS);
rubidium@5900: 	packet.Send_uint8(in_reply_count);
rubidium@5339: 	for (i = 0; i < in_reply_count; i++) {
rubidium@5339: 		char name[NETWORK_GRF_NAME_LENGTH];
rubidium@5341: 
rubidium@5341: 		/* The name could be an empty string, if so take the filename */
skidd13@10310: 		strecpy(name, (in_reply[i]->name != NULL && !StrEmpty(in_reply[i]->name)) ?
skidd13@10310: 				in_reply[i]->name : in_reply[i]->filename, lastof(name));
rubidium@6492: 		this->Send_GRFIdentifier(&packet, in_reply[i]);
rubidium@5900: 		packet.Send_string(name);
rubidium@5339: 	}
rubidium@5339: 
rubidium@5898: 	this->SendPacket(&packet, client_addr);
rubidium@5339: }
rubidium@5339: 
rubidium@5619: ///*** Communication with servers (we are client) ***/
rubidium@5619: 
rubidium@5619: class ClientNetworkUDPSocketHandler : public NetworkUDPSocketHandler {
rubidium@5619: protected:
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_SERVER_RESPONSE);
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_MASTER_RESPONSE_LIST);
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_SERVER_NEWGRFS);
rubidium@5619: 	virtual void HandleIncomingNetworkGameInfoGRFConfig(GRFConfig *config);
rubidium@5619: public:
rubidium@5619: 	virtual ~ClientNetworkUDPSocketHandler() {}
rubidium@5619: };
rubidium@5619: 
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Client, PACKET_UDP_SERVER_RESPONSE)
rubidium@5619: {
rubidium@5619: 	NetworkGameList *item;
rubidium@5619: 
rubidium@5619: 	// Just a fail-safe.. should never happen
rubidium@5619: 	if (_network_udp_server) return;
rubidium@5619: 
rubidium@5619: 	DEBUG(net, 4, "[udp] server response from %s:%d", inet_ntoa(client_addr->sin_addr), ntohs(client_addr->sin_port));
rubidium@5619: 
rubidium@5619: 	// Find next item
rubidium@5619: 	item = NetworkGameListAddItem(inet_addr(inet_ntoa(client_addr->sin_addr)), ntohs(client_addr->sin_port));
rubidium@5619: 
rubidium@5619: 	this->Recv_NetworkGameInfo(p, &item->info);
rubidium@5619: 
rubidium@5619: 	item->info.compatible = true;
rubidium@5619: 	{
rubidium@5619: 		/* Checks whether there needs to be a request for names of GRFs and makes
rubidium@5619: 		 * the request if necessary. GRFs that need to be requested are the GRFs
rubidium@5619: 		 * that do not exist on the clients system and we do not have the name
rubidium@5619: 		 * resolved of, i.e. the name is still UNKNOWN_GRF_NAME_PLACEHOLDER.
rubidium@5619: 		 * The in_request array and in_request_count are used so there is no need
rubidium@5619: 		 * to do a second loop over the GRF list, which can be relatively expensive
rubidium@5619: 		 * due to the string comparisons. */
rubidium@5619: 		const GRFConfig *in_request[NETWORK_MAX_GRF_COUNT];
rubidium@5619: 		const GRFConfig *c;
rubidium@5619: 		uint in_request_count = 0;
rubidium@5619: 		struct sockaddr_in out_addr;
rubidium@5619: 
rubidium@5619: 		for (c = item->info.grfconfig; c != NULL; c = c->next) {
maedhros@6229: 			if (c->status == GCS_NOT_FOUND) item->info.compatible = false;
rubidium@8970: 			if (c->status != GCS_NOT_FOUND || strcmp(c->name, UNKNOWN_GRF_NAME_PLACEHOLDER) != 0) continue;
rubidium@5619: 			in_request[in_request_count] = c;
rubidium@5619: 			in_request_count++;
rubidium@5619: 		}
rubidium@5619: 
rubidium@5619: 		if (in_request_count > 0) {
rubidium@5619: 			/* There are 'unknown' GRFs, now send a request for them */
rubidium@5619: 			uint i;
rubidium@5898: 			Packet packet(PACKET_UDP_CLIENT_GET_NEWGRFS);
rubidium@5619: 
rubidium@5900: 			packet.Send_uint8(in_request_count);
rubidium@5619: 			for (i = 0; i < in_request_count; i++) {
rubidium@5898: 				this->Send_GRFIdentifier(&packet, in_request[i]);
rubidium@5619: 			}
rubidium@5619: 
rubidium@5619: 			out_addr.sin_family      = AF_INET;
rubidium@5619: 			out_addr.sin_port        = htons(item->port);
rubidium@5619: 			out_addr.sin_addr.s_addr = item->ip;
rubidium@5898: 			this->SendPacket(&packet, &out_addr);
rubidium@5619: 		}
rubidium@5619: 	}
rubidium@5619: 
rubidium@5619: 	if (item->info.hostname[0] == '\0')
rubidium@5619: 		snprintf(item->info.hostname, sizeof(item->info.hostname), "%s", inet_ntoa(client_addr->sin_addr));
rubidium@5619: 
rubidium@5619: 	/* Check if we are allowed on this server based on the revision-match */
rubidium@6178: 	item->info.version_compatible = IsNetworkCompatibleVersion(item->info.server_revision);
rubidium@5619: 	item->info.compatible &= item->info.version_compatible; // Already contains match for GRFs
rubidium@5619: 
rubidium@5619: 	item->online = true;
rubidium@5619: 
rubidium@5619: 	UpdateNetworkGameWindow(false);
rubidium@5619: }
rubidium@5619: 
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Client, PACKET_UDP_MASTER_RESPONSE_LIST)
rubidium@5619: {
rubidium@5619: 	int i;
rubidium@5619: 	struct in_addr ip;
rubidium@5619: 	uint16 port;
rubidium@5619: 	uint8 ver;
rubidium@5619: 
rubidium@5619: 	/* packet begins with the protocol version (uint8)
rubidium@5619: 	 * then an uint16 which indicates how many
rubidium@5619: 	 * ip:port pairs are in this packet, after that
rubidium@5619: 	 * an uint32 (ip) and an uint16 (port) for each pair
rubidium@5619: 	 */
rubidium@5619: 
rubidium@5900: 	ver = p->Recv_uint8();
rubidium@5619: 
rubidium@5619: 	if (ver == 1) {
rubidium@5900: 		for (i = p->Recv_uint16(); i != 0 ; i--) {
rubidium@5900: 			ip.s_addr = TO_LE32(p->Recv_uint32());
rubidium@5900: 			port = p->Recv_uint16();
rubidium@5624: 
rubidium@5624: 			/* Somehow we reached the end of the packet */
rubidium@5624: 			if (this->HasClientQuit()) return;
rubidium@5619: 			NetworkUDPQueryServer(inet_ntoa(ip), port);
rubidium@5619: 		}
rubidium@5619: 	}
rubidium@5619: }
rubidium@5619: 
rubidium@5339: /** The return of the client's request of the names of some NewGRFs */
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Client, PACKET_UDP_SERVER_NEWGRFS)
rubidium@5339: {
rubidium@5339: 	uint8 num_grfs;
rubidium@5339: 	uint i;
rubidium@5339: 
rubidium@5619: 	DEBUG(net, 6, "[udp] newgrf data reply from %s:%d", inet_ntoa(client_addr->sin_addr), ntohs(client_addr->sin_port));
rubidium@5339: 
rubidium@5900: 	num_grfs = p->Recv_uint8 ();
rubidium@5339: 	if (num_grfs > NETWORK_MAX_GRF_COUNT) return;
rubidium@5339: 
rubidium@5339: 	for (i = 0; i < num_grfs; i++) {
rubidium@5339: 		char *unknown_name;
rubidium@5339: 		char name[NETWORK_GRF_NAME_LENGTH];
rubidium@5339: 		GRFConfig c;
rubidium@5339: 
rubidium@5619: 		this->Recv_GRFIdentifier(p, &c);
rubidium@5900: 		p->Recv_string(name, sizeof(name));
rubidium@5339: 
rubidium@5341: 		/* An empty name is not possible under normal circumstances
rubidium@5341: 		 * and causes problems when showing the NewGRF list. */
tron@5638: 		if (StrEmpty(name)) continue;
rubidium@5341: 
rubidium@5339: 		/* Finds the fake GRFConfig for the just read GRF ID and MD5sum tuple.
rubidium@5339: 		 * If it exists and not resolved yet, then name of the fake GRF is
rubidium@5339: 		 * overwritten with the name from the reply. */
rubidium@5339: 		unknown_name = FindUnknownGRFName(c.grfid, c.md5sum, false);
rubidium@5339: 		if (unknown_name != NULL && strcmp(unknown_name, UNKNOWN_GRF_NAME_PLACEHOLDER) == 0) {
rubidium@5339: 			ttd_strlcpy(unknown_name, name, NETWORK_GRF_NAME_LENGTH);
rubidium@5339: 		}
rubidium@5339: 	}
rubidium@5339: }
rubidium@5339: 
rubidium@5619: void ClientNetworkUDPSocketHandler::HandleIncomingNetworkGameInfoGRFConfig(GRFConfig *config)
truelight@543: {
rubidium@5619: 	/* Find the matching GRF file */
rubidium@5619: 	const GRFConfig *f = FindGRFConfig(config->grfid, config->md5sum);
rubidium@5619: 	if (f == NULL) {
rubidium@5619: 		/* Don't know the GRF, so mark game incompatible and the (possibly)
rubidium@5619: 		 * already resolved name for this GRF (another server has sent the
rubidium@5619: 		 * name of the GRF already */
rubidium@6424: 		config->name   = FindUnknownGRFName(config->grfid, config->md5sum, true);
rubidium@6424: 		config->status = GCS_NOT_FOUND;
truelight@3547: 	} else {
rubidium@6424: 		config->filename  = f->filename;
rubidium@6424: 		config->name      = f->name;
rubidium@6424: 		config->info      = f->info;
truelight@543: 	}
skidd13@7931: 	SetBit(config->flags, GCF_COPY);
truelight@543: }
truelight@543: 
truelight@543: // Close UDP connection
rubidium@6247: void NetworkUDPCloseAll()
truelight@543: {
Darkvater@5380: 	DEBUG(net, 1, "[udp] closed listeners");
truelight@543: 
rubidium@5619: 	_udp_server_socket->Close();
rubidium@5619: 	_udp_master_socket->Close();
rubidium@5619: 	_udp_client_socket->Close();
truelight@764: 
rubidium@5521: 	_network_udp_server = false;
rubidium@5521: 	_network_udp_broadcast = 0;
truelight@543: }
truelight@543: 
truelight@543: // Broadcast to all ips
rubidium@5619: static void NetworkUDPBroadCast(NetworkUDPSocketHandler *socket)
truelight@543: {
tron@4077: 	uint i;
truelight@543: 
tron@4077: 	for (i = 0; _broadcast_list[i] != 0; i++) {
rubidium@5898: 		Packet p(PACKET_UDP_CLIENT_FIND_SERVER);
tron@4077: 		struct sockaddr_in out_addr;
truelight@543: 
truelight@543: 		out_addr.sin_family = AF_INET;
rubidium@9420: 		out_addr.sin_port = htons(_settings_client.network.server_port);
tron@4034: 		out_addr.sin_addr.s_addr = _broadcast_list[i];
tron@4034: 
Darkvater@5380: 		DEBUG(net, 4, "[udp] broadcasting to %s", inet_ntoa(out_addr.sin_addr));
truelight@543: 
rubidium@5898: 		socket->SendPacket(&p, &out_addr);
truelight@543: 	}
truelight@764: }
truelight@764: 
truelight@764: 
truelight@764: // Request the the server-list from the master server
rubidium@6247: void NetworkUDPQueryMasterServer()
truelight@764: {
truelight@764: 	struct sockaddr_in out_addr;
truelight@764: 
rubidium@5624: 	if (!_udp_client_socket->IsConnected()) {
rubidium@5619: 		if (!_udp_client_socket->Listen(0, 0, true)) return;
rubidium@5619: 	}
truelight@764: 
rubidium@5898: 	Packet p(PACKET_UDP_CLIENT_GET_LIST);
truelight@764: 
truelight@764: 	out_addr.sin_family = AF_INET;
truelight@764: 	out_addr.sin_port = htons(NETWORK_MASTER_SERVER_PORT);
truelight@764: 	out_addr.sin_addr.s_addr = NetworkResolveHost(NETWORK_MASTER_SERVER_HOST);
truelight@764: 
truelight@764: 	// packet only contains protocol version
rubidium@5900: 	p.Send_uint8(NETWORK_MASTER_SERVER_VERSION);
truelight@764: 
rubidium@5898: 	_udp_client_socket->SendPacket(&p, &out_addr);
truelight@764: 
rubidium@5898: 	DEBUG(net, 2, "[udp] master server queried at %s:%d", inet_ntoa(out_addr.sin_addr), ntohs(out_addr.sin_port));
truelight@543: }
truelight@543: 
truelight@543: // Find all servers
rubidium@6247: void NetworkUDPSearchGame()
truelight@543: {
truelight@543: 	// We are still searching..
Darkvater@5380: 	if (_network_udp_broadcast > 0) return;
truelight@543: 
truelight@543: 	// No UDP-socket yet..
rubidium@5624: 	if (!_udp_client_socket->IsConnected()) {
rubidium@5619: 		if (!_udp_client_socket->Listen(0, 0, true)) return;
rubidium@5619: 	}
truelight@543: 
Darkvater@5380: 	DEBUG(net, 0, "[udp] searching server");
truelight@543: 
truelight@764: 	NetworkUDPBroadCast(_udp_client_socket);
truelight@543: 	_network_udp_broadcast = 300; // Stay searching for 300 ticks
truelight@543: }
truelight@543: 
rubidium@5916: void NetworkUDPQueryServer(const char* host, unsigned short port, bool manually)
truelight@543: {
truelight@543: 	struct sockaddr_in out_addr;
truelight@543: 	NetworkGameList *item;
truelight@543: 
truelight@543: 	// No UDP-socket yet..
rubidium@5624: 	if (!_udp_client_socket->IsConnected()) {
rubidium@5916: 		if (!_udp_client_socket->Listen(0, 0, true)) return;
rubidium@5619: 	}
truelight@543: 
truelight@543: 	out_addr.sin_family = AF_INET;
truelight@543: 	out_addr.sin_port = htons(port);
truelight@543: 	out_addr.sin_addr.s_addr = NetworkResolveHost(host);
truelight@543: 
truelight@543: 	// Clear item in gamelist
truelight@543: 	item = NetworkGameListAddItem(inet_addr(inet_ntoa(out_addr.sin_addr)), ntohs(out_addr.sin_port));
maedhros@9108: 	if (item == NULL) return;
maedhros@9108: 
rubidium@7331: 	if (StrEmpty(item->info.server_name)) {
rubidium@7331: 		memset(&item->info, 0, sizeof(item->info));
skidd13@10310: 		strecpy(item->info.server_name, host, lastof(item->info.server_name));
skidd13@10310: 		strecpy(item->info.hostname, host, lastof(item->info.hostname));
rubidium@7331: 		item->online = false;
rubidium@7331: 	}
rubidium@5916: 	item->manually = manually;
truelight@543: 
truelight@543: 	// Init the packet
rubidium@5898: 	Packet p(PACKET_UDP_CLIENT_FIND_SERVER);
rubidium@5898: 	_udp_client_socket->SendPacket(&p, &out_addr);
truelight@543: 
truelight@543: 	UpdateNetworkGameWindow(false);
truelight@543: }
truelight@543: 
truelight@765: /* Remove our advertise from the master-server */
rubidium@6247: void NetworkUDPRemoveAdvertise()
truelight@765: {
truelight@765: 	struct sockaddr_in out_addr;
truelight@765: 
truelight@765: 	/* Check if we are advertising */
Darkvater@5380: 	if (!_networking || !_network_server || !_network_udp_server) return;
truelight@765: 
truelight@765: 	/* check for socket */
rubidium@5624: 	if (!_udp_master_socket->IsConnected()) {
rubidium@8826: 		if (!_udp_master_socket->Listen(_network_server_bind_ip, 0, false)) return;
rubidium@5619: 	}
truelight@765: 
Darkvater@5380: 	DEBUG(net, 1, "[udp] removing advertise from master server");
truelight@765: 
truelight@765: 	/* Find somewhere to send */
truelight@765: 	out_addr.sin_family = AF_INET;
truelight@765: 	out_addr.sin_port = htons(NETWORK_MASTER_SERVER_PORT);
truelight@765: 	out_addr.sin_addr.s_addr = NetworkResolveHost(NETWORK_MASTER_SERVER_HOST);
truelight@765: 
truelight@765: 	/* Send the packet */
rubidium@5898: 	Packet p(PACKET_UDP_SERVER_UNREGISTER);
truelight@765: 	/* Packet is: Version, server_port */
rubidium@5900: 	p.Send_uint8 (NETWORK_MASTER_SERVER_VERSION);
rubidium@9420: 	p.Send_uint16(_settings_client.network.server_port);
rubidium@5898: 	_udp_master_socket->SendPacket(&p, &out_addr);
truelight@765: }
truelight@765: 
truelight@668: /* Register us to the master server
truelight@668:      This function checks if it needs to send an advertise */
rubidium@6247: void NetworkUDPAdvertise()
truelight@668: {
truelight@668: 	struct sockaddr_in out_addr;
truelight@668: 
truelight@668: 	/* Check if we should send an advertise */
rubidium@9481: 	if (!_networking || !_network_server || !_network_udp_server || !_settings_client.network.server_advertise)
truelight@668: 		return;
truelight@668: 
truelight@764: 	/* check for socket */
rubidium@5624: 	if (!_udp_master_socket->IsConnected()) {
rubidium@8826: 		if (!_udp_master_socket->Listen(_network_server_bind_ip, 0, false)) return;
rubidium@5619: 	}
truelight@764: 
peter1138@2861: 	if (_network_need_advertise) {
peter1138@2861: 		_network_need_advertise = false;
peter1138@2861: 		_network_advertise_retries = ADVERTISE_RETRY_TIMES;
peter1138@2861: 	} else {
peter1138@2861: 		/* Only send once every ADVERTISE_NORMAL_INTERVAL ticks */
peter1138@2861: 		if (_network_advertise_retries == 0) {
peter1138@2861: 			if ((_network_last_advertise_frame + ADVERTISE_NORMAL_INTERVAL) > _frame_counter)
peter1138@2861: 				return;
peter1138@2861: 			_network_advertise_retries = ADVERTISE_RETRY_TIMES;
peter1138@2861: 		}
peter1138@2861: 
peter1138@2861: 		if ((_network_last_advertise_frame + ADVERTISE_RETRY_INTERVAL) > _frame_counter)
truelight@764: 			return;
truelight@764: 	}
truelight@764: 
truelight@764: 	_network_advertise_retries--;
peter1138@2861: 	_network_last_advertise_frame = _frame_counter;
truelight@668: 
truelight@668: 	/* Find somewhere to send */
truelight@668: 	out_addr.sin_family = AF_INET;
truelight@668: 	out_addr.sin_port = htons(NETWORK_MASTER_SERVER_PORT);
truelight@668: 	out_addr.sin_addr.s_addr = NetworkResolveHost(NETWORK_MASTER_SERVER_HOST);
truelight@668: 
Darkvater@5380: 	DEBUG(net, 1, "[udp] advertising to master server");
truelight@668: 
truelight@668: 	/* Send the packet */
rubidium@5898: 	Packet p(PACKET_UDP_SERVER_REGISTER);
truelight@668: 	/* Packet is: WELCOME_MESSAGE, Version, server_port */
rubidium@5900: 	p.Send_string(NETWORK_MASTER_SERVER_WELCOME_MESSAGE);
rubidium@5900: 	p.Send_uint8 (NETWORK_MASTER_SERVER_VERSION);
rubidium@9420: 	p.Send_uint16(_settings_client.network.server_port);
rubidium@5898: 	_udp_master_socket->SendPacket(&p, &out_addr);
truelight@668: }
truelight@668: 
rubidium@6247: void NetworkUDPInitialize()
truelight@543: {
rubidium@5619: 	_udp_client_socket = new ClientNetworkUDPSocketHandler();
rubidium@5619: 	_udp_server_socket = new ServerNetworkUDPSocketHandler();
rubidium@5619: 	_udp_master_socket = new MasterNetworkUDPSocketHandler();
truelight@543: 
truelight@543: 	_network_udp_server = false;
truelight@543: 	_network_udp_broadcast = 0;
truelight@543: }
truelight@543: 
rubidium@6247: void NetworkUDPShutdown()
rubidium@5619: {
rubidium@5619: 	NetworkUDPCloseAll();
rubidium@5619: 
rubidium@5619: 	delete _udp_client_socket;
rubidium@5619: 	delete _udp_server_socket;
rubidium@5619: 	delete _udp_master_socket;
rubidium@5619: }
rubidium@5619: 
truelight@543: #endif /* ENABLE_NETWORK */