Processing data for transferring or mirroring a media stream

A non-transitory computer readable storage medium for limiting, during a multimedia session between a first user terminal and a correspondent through an intermediate server, operations of replacing the first terminal by another user terminal in the reception of a media stream of the multimedia session, namely transfer, or copying a media stream sent to the first terminal towards another user terminal, namely replication, operations of transferring or replicating a media stream to other user terminals, having stored thereon a computer program comprising program instructions, the computer program being loadable into a data-processing unit and adapted to cause the data-processing unit to carry out, when the computer program is run by the data-processing unit:

• a) establishing of a multimedia session between said first user terminal and the correspondent through said intermediate server using SIP, wherein the correspondent is a content provider, said establishing comprising an operation of reception of a SIP message, transmitted by said correspondent to the intermediate server, containing a set of information elements relating to transfer or replication operations authorised for a media stream of said multimedia session, wherein
• if the establishment of the session is initiated by said first user terminal, the set of information elements are inserted into the SIP message, the SIP message being a SIP response message to establish the session, and
• if the establishment of the session is initiated by said correspondent, the set of information elements being inserted into the SIP message, the SIP message being a SIP request message to establish the session,
• b) receiving a request to transfer or replicate the media stream of said multimedia session, said request being transmitted by the first user terminal to the intermediate server, said request containing information relating to a second user terminal, which is a recipient of the transfer or the replication, and information relating to the media stream to be transferred or replicated,
• c) comparing said information relating to the second user terminal and to the media stream to be transferred or replicated with a set of information elements relating to transfer or replication operations authorised for the media stream of said multimedia session, said comparison being performed by the intermediate server, and determining, depending on the comparison, whether the transfer or replication operation is authorised, and
• d) when the transfer or duplication operation is authorised, performing the operation of transferring or replicating the media stream from the first user terminal to said second user terminal, said operation of transferring or replicating being performed by the intermediate server,
• wherein said set of information elements comprises an information element for denying the transfer and the replication of the media stream to another terminal, or an information element for denying the transfer and the replication of the media stream to another terminal belonging to another user, or an information element for limiting the transfer and the replication of the media stream to a terminal of a predetermined type, or an information element for limiting the number of terminals to which the media stream can be replicated, or an information element for limiting the number of users to which the media stream can be replicated.

A server configured for limiting, during a multimedia session between a first user terminal and a correspondent through said server, operations of replacing the first terminal by another user terminal in the reception of a media stream of the multimedia session, namely transfer, or copying a media stream sent to the first terminal towards another user terminal, namely replication, the server comprising:

• a reception module being configured for receiving, during establishment of the multimedia session between the first user terminal and the correspondent using SIP, wherein the correspondent is a content provider, a SIP message, transmitted by the correspondent to said server, containing a set of information elements relating to transfer or replication operations authorised for the media stream of the multimedia session, wherein
• if the establishment of the session is initiated by said first user terminal, the set of information elements are inserted into the SIP message, the SIP message being a SIP response message to establish the session, and
• if the establishment of the session is initiated by said correspondent, the set of information elements being inserted into the SIP message, the SIP message being a SIP request message to establish the session,
• the reception module configured for receiving a request for transfer or replication of the media stream of said multimedia session, said request being transmitted by the first user terminal, said request containing information relating to a second user terminal, which is a recipient of the transfer or the replication, and information relating to the media stream of said multimedia session to be transferred or replicated,
• a processing module configured for comparing said information relating to the second user terminal and to the media stream of said multimedia session to be transferred or replicated with the set of information elements relating to transfer or replication operations authorised for the media stream of said multimedia session, and for determining, depending on the comparison, whether the transfer or replication operation is authorised,
• a transfer and replication module configured for performing the operation of transferring or replicating of the media stream of said multimedia session to said second user terminal when said operation has been determined as authorised,
• and
• a memory module configured for storing the set of information elements,
• wherein said set of information elements comprises an information element for denying the transfer and the replication of the media stream to another terminal, or an information element for denying the transfer and the replication of the media stream to another terminal belonging to another user, or an information element for limiting the transfer and the replication of the media stream to a terminal of a predetermined type, or an information element for limiting the number of terminals to which the media stream can be replicated, or an information element for limiting the number of users to which the media stream can be replicated.