A method for controlling, in a communications network, recommendation messages exchanged during a session between a first endpoint, referred to as a source entity, and a second endpoint, referred to as a receiving entity. The messages are exchanged via a tube grouping data packets of a communication protocol with no guarantee of the delivery of the data packets. The method includes: obtaining recommendations contained in the recommendation messages via a control entity located on a network path of the tube, the control entity being authorized by an operator of the communications network; calculating a new recommendation message, on the basis of the recommendations obtained and of at least one information item relating to conditions of the network provided by the control entity; and sending the new recommendation message to at least one network entity located at one end of the tube.