Controlling communications from content server to end device

A method for controlling communications from a content server to an end device via a proxy device, wherein the content server has a connection to the proxy device over a first link using a streaming control protocol, and the proxy device also has a connection to the end device over a second link, the method comprising, in said proxy device:

• receiving from the end device information about a context of the end device;
• determining where a decision should be made about controlling transmissions from the content server to the end device via the proxy device;
• and
• in response to determining that the decision about controlling transmissions from the content server to the end device via the proxy device should be made in the end device, notifying the end device of the determination, wherein notifying the end device of the determination comprises sending, to the end device, a message requesting the end device to make an assessment as to whether transmissions from the content server over the first link should be controlled based on a Quality of Experience at the end device.