mirror of https://github.com/OpenTTD/OpenTTD.git
101 lines
7.3 KiB
C++
101 lines
7.3 KiB
C++
/*
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* This file is part of OpenTTD.
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* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file config.h Configuration options of the network stuff. It is used even when compiling without network support.
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*/
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#ifndef NETWORK_CORE_CONFIG_H
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#define NETWORK_CORE_CONFIG_H
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const char *NetworkCoordinatorConnectionString();
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const char *NetworkStunConnectionString();
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const char *NetworkContentServerConnectionString();
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const char *NetworkContentMirrorUriString();
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const char *NetworkSurveyUriString();
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static const uint16_t NETWORK_COORDINATOR_SERVER_PORT = 3976; ///< The default port of the Game Coordinator server (TCP)
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static const uint16_t NETWORK_STUN_SERVER_PORT = 3975; ///< The default port of the STUN server (TCP)
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static const uint16_t NETWORK_TURN_SERVER_PORT = 3974; ///< The default port of the TURN server (TCP)
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static const uint16_t NETWORK_CONTENT_SERVER_PORT = 3978; ///< The default port of the content server (TCP)
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static const uint16_t NETWORK_DEFAULT_PORT = 3979; ///< The default port of the game server (TCP & UDP)
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static const uint16_t NETWORK_ADMIN_PORT = 3977; ///< The default port for admin network
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static const size_t UDP_MTU = 1460; ///< Number of bytes we can pack in a single UDP packet
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static const std::string NETWORK_SURVEY_DETAILS_LINK = "https://survey.openttd.org/participate"; ///< Link with more details & privacy statement of the survey.
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/*
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* Technically a TCP packet could become 64kiB, however the high bit is kept so it becomes possible in the future
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* to go to (significantly) larger packets if needed. This would entail a strategy such as employed for UTF-8.
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*
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* Packets up to 32 KiB have the high bit not set:
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* 00000000 00000000 0bbbbbbb aaaaaaaa -> aaaaaaaa 0bbbbbbb
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* Send_uint16(GB(size, 0, 15)
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*
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* Packets up to 1 GiB, first uint16_t has high bit set so it knows to read a
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* next uint16_t for the remaining bits of the size.
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* 00dddddd cccccccc bbbbbbbb aaaaaaaa -> cccccccc 10dddddd aaaaaaaa bbbbbbbb
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* Send_uint16(GB(size, 16, 14) | 0b10 << 14)
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* Send_uint16(GB(size, 0, 16))
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*/
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static const size_t TCP_MTU = 32767; ///< Number of bytes we can pack in a single TCP packet
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static const size_t COMPAT_MTU = 1460; ///< Number of bytes we can pack in a single packet for backward compatibility
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static const uint8_t NETWORK_GAME_ADMIN_VERSION = 3; ///< What version of the admin network do we use?
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static const uint8_t NETWORK_GAME_INFO_VERSION = 7; ///< What version of game-info do we use?
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static const uint8_t NETWORK_COORDINATOR_VERSION = 6; ///< What version of game-coordinator-protocol do we use?
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static const uint8_t NETWORK_SURVEY_VERSION = 2; ///< What version of the survey do we use?
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static const uint NETWORK_NAME_LENGTH = 80; ///< The maximum length of the server name and map name, in bytes including '\0'
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static const uint NETWORK_COMPANY_NAME_LENGTH = 128; ///< The maximum length of the company name, in bytes including '\0'
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static const uint NETWORK_HOSTNAME_LENGTH = 80; ///< The maximum length of the host name, in bytes including '\0'
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static const uint NETWORK_HOSTNAME_PORT_LENGTH = 80 + 6; ///< The maximum length of the host name + port, in bytes including '\0'. The extra six is ":" + port number (with a max of 65536)
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static const uint NETWORK_SERVER_ID_LENGTH = 33; ///< The maximum length of the network id of the servers, in bytes including '\0'
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static const uint NETWORK_REVISION_LENGTH = 33; ///< The maximum length of the revision, in bytes including '\0'
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static const uint NETWORK_PASSWORD_LENGTH = 33; ///< The maximum length of the password, in bytes including '\0' (must be >= NETWORK_SERVER_ID_LENGTH)
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static const uint NETWORK_CLIENT_NAME_LENGTH = 25; ///< The maximum length of a client's name, in bytes including '\0'
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static const uint NETWORK_RCONCOMMAND_LENGTH = 500; ///< The maximum length of a rconsole command, in bytes including '\0'
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static const uint NETWORK_GAMESCRIPT_JSON_LENGTH = 9000; ///< The maximum length of a receiving gamescript json string, in bytes including '\0'.
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static const uint NETWORK_CHAT_LENGTH = 900; ///< The maximum length of a chat message, in bytes including '\0'
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static const uint NETWORK_CONTENT_FILENAME_LENGTH = 48; ///< The maximum length of a content's filename, in bytes including '\0'.
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static const uint NETWORK_CONTENT_NAME_LENGTH = 32; ///< The maximum length of a content's name, in bytes including '\0'.
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static const uint NETWORK_CONTENT_VERSION_LENGTH = 16; ///< The maximum length of a content's version, in bytes including '\0'.
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static const uint NETWORK_CONTENT_URL_LENGTH = 96; ///< The maximum length of a content's url, in bytes including '\0'.
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static const uint NETWORK_CONTENT_DESC_LENGTH = 512; ///< The maximum length of a content's description, in bytes including '\0'.
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static const uint NETWORK_CONTENT_TAG_LENGTH = 32; ///< The maximum length of a content's tag, in bytes including '\0'.
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static const uint NETWORK_ERROR_DETAIL_LENGTH = 100; ///< The maximum length of the error detail, in bytes including '\0'.
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static const uint NETWORK_INVITE_CODE_LENGTH = 64; ///< The maximum length of the invite code, in bytes including '\0'.
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static const uint NETWORK_INVITE_CODE_SECRET_LENGTH = 80; ///< The maximum length of the invite code secret, in bytes including '\0'.
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static const uint NETWORK_TOKEN_LENGTH = 64; ///< The maximum length of a token, in bytes including '\0'.
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static const uint NETWORK_GRF_NAME_LENGTH = 80; ///< Maximum length of the name of a GRF
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/**
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* Maximum number of GRFs that can be sent.
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*
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* This limit exists to avoid that the SERVER_INFO packet exceeding the
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* maximum MTU. At the time of writing this limit is 32767 (TCP_MTU).
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*
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* In the SERVER_INFO packet is the NetworkGameInfo struct, which is
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* 142 bytes + 100 per NewGRF (under the assumption strings are used to
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* their max). This brings us to roughly 326 possible NewGRFs. Round it
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* down so people don't freak out because they see a weird value, and you
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* get the limit: 255.
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*
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* PS: in case you ever want to raise this number, please be mindful that
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* "amount of NewGRFs" in NetworkGameInfo is currently an uint8.
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*/
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static const uint NETWORK_MAX_GRF_COUNT = 255;
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/**
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* The maximum length of the hexadecimal encoded secret keys, in bytes including '\0'.
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* This is related to \c X25519_KEY_SIZE in the network crypto internals.
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*/
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static const uint NETWORK_SECRET_KEY_LENGTH = 32 * 2 + 1;
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#endif /* NETWORK_CORE_CONFIG_H */
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