Peer2Peer-FileShare

Contents

• initdata
  • d{i}: Initial data for peer i
  • populate.py: Utility script to add a file and keyword to a directory
• src
  • Main: Entrypoint to program
  • Constants: Contains port number configurations
  • FileDirectory: Processes contents of data directory to generate list of available files and keywords
  • tasks: Background tasks running on each node
    • Node: Interface to entire peer network, including join/leave, discovery, and file transfers
    • PeerDiscoveryTransceiver: Task for transmitting and receiving data to/from a particular neighbor
    • TrackerServer: Server for tracking all nodes in network
    • ListenerTask: Base class for servers
  • messages: Message formats
    • Message: Base class for messages, with utility methods for serializing byte arrays
    • HangupMessage: Represents hangup messages (for disconnecting from neighbors)
    • DiscoveryMessage: Base class containing common data to all discovery messages
    • DiscoveryQueryMessage: Represents discovery query messages
    • DiscoveryReplyMessage: Represents discovery reply messages

Instructions

Data Setup

Copy initial data to data directory with:

./setupdata.sh

Compilation

Compile the Java source files into class files:

./compile.sh

Execution

Tracker

Start a tracker server on any host (note the hostname down) with:

./tracker.sh

Peer

For each integer i from 1 to 15, pick a unique host and start peer i with:

./node.sh {trackerhostname} {i}

*curly braces {} indicates substitution with the appropriate variable

*the tracker server can run on the same host as a peer, for example peer 1

Output

Each peer will log the following items:

• CONNECT TO : Peer is sending a connection request to specified hostname
• CONNECT FROM : Peer is receiving a connection request from specified hostname
• NEIGHBORS : Peer currently connected to the following hostnames (logged on connection request sent/received)
• SEND <details...>: Sending a message
• RECV <details...>: Receiving a message