Compiling the project

1. Extract tar.gz file to obtain can_ds directory
2. Enter into can_ds directory
3. Run the following to compile project

mkdir -p build/classes/java/main/
javac -d build/classes/java/main/ src/main/java/can_ds/*/*

Running different nodes

DNS node

To run the dns node run the following

bash dnsnode

Note this node has to be active before other peer nodes can join the overlay network.

Peer node

To run a peer node run the following

bash node <dns-ip-address>

Here IP address of DNS server has to be passed as it serves the peer with a list of bootstrap nodes to allow the node to join the overlay network.

Once within the node terminal. The following commands are accepted

• JOIN

  peer-0 > join
  

  Registers with DNS node, which then returns a set of bootstrap nodes that are part of the network. These bootstrap nodes are then used to join the CAN network.

• INSERT

  peer-0 > insert <keyword> <filename>
  

  OR

  peer-0 > insert <keyword> <filename> <peer_id>
  

  <keyword> is a keyword which is hashed to find a peer that would store the file. <filename> is the file that will be stored at a peer. <peer_id> is the ID of a peer from where insert should happen.

• SEARCH

  peer-0 > search <keyword> <filename>
  

  OR

  peer-0 > search <keyword> <filename> <peer_id>
  

  <keyword> is a keyword which is hashed to find a peer that would have stored the file. <filename> is the file that will be searched for at peers. <peer_id> is the ID of a peer from where search should happen.

• VIEW

  peer-0 > view
  peer-0 > view 0
  

  Here '0' is a peer identifier and would display information of peer-0. Without a peer identifier the command will display information of all the peers in the overlay network.

• LEAVE

  Currently node does not correctly support leave command. Using exit leaves the entire network in an inconsistent state.