GROUP MESSAGING SYSTEM, METHOD AND COMPUTER READABLE RECORDING MEDIUM FOR PROVIDING FILE SHARING THROUGH BIDIRECTIONAL INTERLOCK WITH A CLOUD SERVER

摘要

PURPOSE: A group messaging system, a method thereof, and a computer-readable recording medium thereof reduce the amount of data being carried by a network by enabling participants in a group chat room to share a file through a shared cloud server and thereby saving the network from having to send the file for each participant. CONSTITUTION: Upon a user device (300)'s request for creating a group chat room, a messenger server (310) asks the group members' devices to do so. A cloud server (320) is informed of the group chat room by the messenger server and generates a share group mapped with the chat group members on a one-to-one basis. When one or more files are posted within the group chat room the files are stored in a dedicated folder for the share group of the cloud server. [Reference numerals] (310) Messenger server; (320) Cloud server; (330) Cloud storage; (340) Authentication server; (AA) Sender; (BB) Messenger authentication receiver; (CC,EE) Chat room; (DD,LL) File; (FF) Group chat room creation; (GG) Activity notification to a messenger client; (HH) File transmission; (II) Activity notification to a messenger server; (JJ) Cloud; (KK) File sharing activity execution; (MM) Cloud authentication sender; (NN) Cloud authentication receiver