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Feature: allow the use of TURN to connect client and server together

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TURN is a last resort, used only if all other methods failed.
TURN is a relay approach to connect client and server together, where
openttd.org (by default) is the middleman.

It is very unlikely either the client or server cannot connect to
the STUN server, as they are both already connected to the Game
Coordinator. But in the odd case it does fail, estabilishing the
connection fails without any further possibility to recover.
This commit is contained in:
Patric Stout
2021-05-05 10:47:01 +02:00
committed by Patric Stout
parent 8a36134003
commit fa1e27994d
21 changed files with 620 additions and 2 deletions
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3
src/network/core/config.h
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@@ -22,6 +22,7 @@ static const char * const NETWORK_CONTENT_MIRROR_URL = "/bananas";
static const uint16 NETWORK_COORDINATOR_SERVER_PORT = 3976; ///< The default port of the Game Coordinator server (TCP)
static const uint16 NETWORK_STUN_SERVER_PORT = 3975; ///< The default port of the STUN server (TCP)
static const uint16 NETWORK_TURN_SERVER_PORT = 3974; ///< The default port of the TURN server (TCP)
static const uint16 NETWORK_CONTENT_SERVER_PORT = 3978; ///< The default port of the content server (TCP)
static const uint16 NETWORK_CONTENT_MIRROR_PORT = 80; ///< The default port of the content mirror (TCP)
static const uint16 NETWORK_DEFAULT_PORT = 3979; ///< The default port of the game server (TCP & UDP)
@@ -49,7 +50,7 @@ static const uint16 COMPAT_MTU = 1460; ///< Numbe
static const byte NETWORK_GAME_ADMIN_VERSION = 1; ///< What version of the admin network do we use?
static const byte NETWORK_GAME_INFO_VERSION = 6; ///< What version of game-info do we use?
static const byte NETWORK_COMPANY_INFO_VERSION = 6; ///< What version of company info is this?
static const byte NETWORK_COORDINATOR_VERSION = 4; ///< What version of game-coordinator-protocol do we use?
static const byte NETWORK_COORDINATOR_VERSION = 5; ///< What version of game-coordinator-protocol do we use?
static const uint NETWORK_NAME_LENGTH = 80; ///< The maximum length of the server name and map name, in bytes including '\0'
static const uint NETWORK_COMPANY_NAME_LENGTH = 128; ///< The maximum length of the company name, in bytes including '\0'