METHOD FOR CONTROLLING ACCESS TO AN APPLICATION SERVICE IMPLEMENTED IN A TELECOMMUNICATIONS NETWORK, METHOD FOR PROCESSING A MESSAGE FOR CONTROLLING ACCESS TO THE APPLICATION SERVICE, AND CORRESPONDING DEVICES, CONTROL EQUIPMENT, CLIENT EQUIPMENT, SYSTEM AND COMPUTER PROGRAMS

A method of controlling an access by at least one item of client equipment to an application service in a telecommunications network. The at least one item of client equipment is configured to access the application service. The method includes: obtaining event information relating to the processing, by at least one item of service equipment involved in implementing the application service, of messages exchanged during at least one access to the application service; detecting, from the information obtained, a processing anomaly by at least one the item of service equipment in relation to at least one given service execution criterion; and transmitting at least one control message containing at least one control action of a processing of at least one access request to the service by the item of client equipment.