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Grapple is a free software package for adding multiplayer support to computer games and applications. It uses Internet protocols, supporting both TCP/IP and UDP/IP. It is intended to be simple enough that multiplayer features can be added to a game "as little as a dozen lines of code",〔 (Grapple ) home page at linuxgamepublishing.com〕 but also offers advanced features if desired. Grapple takes care of creating, monitoring and closing connections to a server, and supports multiple servers. It is a message-oriented system, with clients and servers each having a message queue; it can also relay messages from client to client. It also provides a fully functional lobby system.〔(README.lobby ) at grapple.linuxgamepublishing.com〕 The package was created in 2006 by Michael Simms of Linux Game Publishing. It is released under the GNU LGPL. ==Features== The features grapple supports at this time is: * Simple client-server networking * Keeps all clients aware of all other clients * Network messaging by either a push or a pull model, or a mixture of both * Unlimited connections to multiple servers. * Multiple methods of querying users * Data transfer via TCP, UDP, or reliable UDP * Passworded servers * User Groups for client bandwidth saving * Server security - server can disconnect any client * Network load reacting data transmission and retransmission * Background pinging to monitor network states * A fully functional lobby system * Server failover * NAT traversal using STUN 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Grapple (network layer)」の詳細全文を読む スポンサード リンク
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