Gateway, and method, computer program and storage means corresponding thereto

A method implemented by a gateway connecting a first communication network comprising at least one terminal configured to consume multimedia contents and a second communication network, the gateway being configured for receiving said multimedia contents in stream form, wherein the method comprises:

• detecting an establishment of a unicast connection aiming at transmitting one said multimedia content in said unicast connection from an original server of the second communication network to one said terminal of said first communication network via said gateway, the detection comprising receiving from said terminal a request that is addressed to the original server and that requests the establishment of said unicast connection between the original server of said second communication network and the one said terminal of said first communication network, and analysing the received request, or a stream comprising the multimedia content received after the establishment of the unicast connection between said terminal and said original server to recover information which is exchanged during the establishment of the unicast connection or respectively in said unicast connection between the original server and said terminal and which serves to identify said multimedia content;
• searching for a connection redirection rule according to the recovered information exchanged;
• when the connection redirection rule is found, establishing a multicast connection toward said gateway for transmitting said multimedia content, receiving said multimedia content in stream form according to the multicast connection, and transmitting said multimedia content to said terminal in stream form according to the unicast connection;
• and
• when the connection redirection rule is not found, enabling the unicast connection between the original server of said second communication network and the one said terminal of said first communication network so that the original server of said second communication network transmits to the one said terminal of said first communication network the multimedia content in unicast form.

A computer-readable, non-transitory information storage medium storing a computer program comprising instructions for causing a gateway to receive multimedia contents in stream form, said gateway configured for receiving said multimedia contents in stream form, said computer program, when executed by a processor of said gateway, causes said gateway to provide execution comprises:

• detecting an establishment of a unicast connection aiming at transmitting one said multimedia content in said unicast connection from an original server of the second communication network to one said terminal of said first communication network via said gateway, the detection comprising receiving from said terminal a request that is addressed to the original server and that requests the establishment of said unicast connection between the original server of said second communication network and the one said terminal of said first communication network, and analysing the received request, or a stream comprising the multimedia content received after the establishment of the unicast connection between said terminal and said original server, to recover information which is exchanged during the establishment of the unicast connection or respectively in said unicast connection between the original server and said terminal and which serves to identify said multimedia content;
• searching for a connection redirection rule according to the recovered information exchanged;
• when the connection redirection rule is found, establishing a multicast connection toward said gateway for transmitting said multimedia content, receiving said multimedia content in stream form according to the multicast connection, and transmitting said multimedia content to said terminal in stream form according to the unicast connection;
• and
• when the connection redirection rule is not found, enabling the unicast connection between the original server of said second communication network and the one said terminal of said first communication network so that the original server of said second communication network transmits to the one said terminal of said first communication network the multimedia content in unicast form.