Method and apparatus for establishing chat group

An apparatus for establishing a chat group, comprising:

• an interface and a processor, wherein the processor comprises an obtaining module, an establishing module, a selecting module, an adding module and a finishing module;
• and
• the interface is to receive a request for establishing a chat group sent by a first client terminal, the request for establishing the chat group comprises an identifier of a user of the first client terminal, an identifier of a chat group to be established;
• the obtaining module is to obtain the identifier of the user of the first client terminal, the identifier of the chat group to be established and a geographic position of the first client terminal, according to the request for establishing the chat group;
• the establishing module is to establish the chat group entry according to the identifier of the user of the first client terminal, the identifier of the chat group to be established and the geographic position of the first client terminal;
• the selecting module is to receive a request from a second client terminal to obtain information of other client terminals located around the second client terminal, wherein the request from the second client terminal includes a geographic position of the second client terminal, and, in response to the request from the second client terminal, determine a distance between the geographic position of the second client terminal and the geographic position of the first client terminal;
• the interface is further to:
• send, in accordance with a determination by the selecting module that the distance between the geographic position of the second client terminal and the geographic position of the first client terminal is shorter than a preset value, an invitation message to join the chat group to the second client terminal, wherein, in response to the invitation message, the second client terminal is configured to display, to a user of the second client terminal, an indication of the chat group to be established including the identifier of the user of the first client terminal and an instruction of inputting authentication information via the second client terminal;
• receive, from the second client terminal, a response of joining the chat group, the response including authentication information provided by the user of the second client terminal, wherein the authentication information was obtained by the user of the second client terminal from the user of the first client terminal independently of the server;
• and
• send information of the user of the second client terminal to the first client terminal after the user of the second client terminal is allowed access into the chat group to be established;
• the adding module is to perform authentication for the user of the second client terminal by determining whether the authentication information provided by the user of the second client terminal is identical with the identifier of the chat group to be established and, in accordance with a determination that the authentication information provided by the user of the second client terminal is identical with the identifier of the chat group to be established, allow access of the user of the second client terminal to the chat group to be established;
• the finishing module is to establish, in response to receiving a finish request from the first client terminal, the chat group including the first client terminal and the second client terminal.