Receiving device and receiving method, reproducing device and reproducing method, supply device and supply method, and program

A receiving device, comprising:

• a receiving unit configured to receive a segment file constituting a stream of content;
• a reproducing unit configured to acquire and reproduce the segment file received by the receiving unit;
• and
• a proxy server unit configured to generate supply availability information including a probability at which a segment file possibly requested by the reproducing unit can be supplied to the reproducing unit on the basis of a reception state of the segment file by the receiving unit,
• wherein the proxy server unit generates the supply availability information in response to a request for the segment file from the reproducing unit and supplies the segment file received by the receiving unit to the reproducing unit, and
• the reproducing unit requests the proxy server unit to transmit a segment file to be reproduced next on the basis of the generated supply availability information.