#Introduction# This experiment is designed to demonstrate that a device (R) before receiving can check the availability of the same file with other devices (P) on the same network. Intra net always has better transfer rate as compared to Internet. Intranet sharing or Local network sharing can save the bandwidth. The same bandwidth can be used for other unique communications. Peer (P) has ability to check if the Receiver(R) is entitled for the file by testing it possession of respective Sender (S). If S really has the file then only P will share the file with R. This attempt is to overcome the limitations and requirements of Cache Proxy, CDN and torrents. #Steps to use" Sender(S), Receiver (R) and Peer(P) uses ports 8080,8081,8082. Any more instances of the peer will use further ports. Create directories 8080,8081,8082 for the above entities. Keep the files in 8080 and 8082. To specify files for the receiver edit Sender.py and enter the hash values of the files. search --FileBase--- in the Receiver.py IF running on separate machines, modify the address. search --Address Configuration-- in Receiver.py Execution sequence will be Sender.py, Peer.py and Receiver.py #Desclaimar We are proposing that the Receiver broadcasts the enquiry over the network. But we have implemented the enquiry with known local instance of the peer. #Description R will ask the list of files available at S for sharing For each file yet to be shared by the S, R does the following R further asks their metadata R checks availability of the file with Peer P P , if the file is available checks the file is in possession of S by sending random challenges S resolves the challenges and forwards to Peer Peer , if challenges are resolved correctly , shares the file Receiver notifies to the Sender about successful delivery