The invention concerns a device for data flow exchange between a client device (3) provided with an Internet file and a server (4) adapted to provide on request from the client device (3), at least a service for transforming said file, the communication between the client (3) and the server (4) being based on a protocol of adaptation of Internet file content of the Internet Content Adaptation Protocol (iCAP) type. The device comprises a adaptor (5) of iCAP type data flows into files adapted to be used directly by said server (4) or by said client device (3); the adaptor (5) comprises means for communicating with the client device (3) and the server (4) and configuration file wherein is/are stated the transformation service(s).