Method and server device for exchanging information items with a plurality of client entities

A server device configured to exchange information items with a plurality of client entities, the server device including

• a communication module to establish a plurality of connections with the plurality of client entities, wherein each connection involves a server-initiated indexing table for the server device to encode information items to be sent over the connection in the server-to-client direction, the server device further comprising:
• a single indexing table used as the server-initiated indexing table of the connections with two or more client entities;
• an indexing table push module configured, in response to receiving a request for data from any of the two or more client entities, to push at least one entry of the single indexing table to the requesting client entity to configure the latter for decoding encoded information item exchanged in the server-to-client direction;
• a data encoder configured to encode information items associated with the requested data using item indexing based on the single indexing table, wherein the requested data are sent along with the encoded information items to the requesting client entity over the connection established with it, after the indexing table push module has pushed the at least one entry to the requesting client entity.

A method of exchanging information items between a server device and a plurality of client entities, the server device generating a single server-initiated indexing table for the server device to encode information items to be sent over any connection with a client entity in the server-to-client direction, the method comprising the following steps performed at the server device:

• indexing an information item to be sent to any client entity, in the single server-initiated indexing table;
• sending the information item to the client entity, causing the client entity to also index the information item in a local indexing table and to further process the received information item locally;
• and
• pushing the information item to the other client entities of the plurality along with an indication that said pushed information item is only to be added by the other client entities to their respective local indexing tables used for index-based decoding, so that all the client entities have the same local indexing tables.