Validation

1) Copy the script.

2) Create a file on the server using the command: nano findpeers.sh

3) Paste the script provided below.

4) In the body of the script, replace the port 14657 (this is the RPC port) with your port. Press the key combination: ctrl x

5) Run the script using the command: bash findpeers.sh

6) The result of running the script will be the display of active peers on the screen, which will also be written to a text document named peersnode.txt.

#!/bin/bash
#############################################
### http://$RPC_ADDRESS:14657/net_info
### 14657 = port RPC
#############################################
# IP address of another node
PEER_NODE="IP_ADDRESS_OF_ANOTHER_NODE"

# Function to fetch active peers from RPC
function get_peers {
    local RPC_ADDRESS=$1
    curl -s http://$RPC_ADDRESS:14657/net_info | jq -r '.result.peers[] | select(.remote_ip != "0.0.0.0") | "\(.node_info.id)@\(.remote_ip):\(.node_info.listen_addr | split(":")[1])"'
}

# Number of retries
RETRIES=5
LOCAL_PEERS=""
REMOTE_PEERS=""

# Fetching active peers from the local node
for ((i=1; i<=RETRIES; i++))
do
    echo "Attempt $i of $RETRIES for the local node"
    NEW_LOCAL_PEERS=$(get_peers "localhost")
    LOCAL_PEERS=$(echo -e "$LOCAL_PEERS\n$NEW_LOCAL_PEERS" | sort -u)
    sleep 1 # Pause between requests
done

# Fetching active peers from the remote node
echo "Fetching peers from the remote node"
REMOTE_PEERS=$(get_peers "$PEER_NODE")

# Combining peer lists and removing duplicates
ALL_PEERS=$(echo -e "$LOCAL_PEERS\n$REMOTE_PEERS" | sort -u | grep -v "0.0.0.0" | tr '\n' ',' | sed 's/^,//' | sed 's/,$//')

# Checking if peers are retrieved
if [ -z "$ALL_PEERS" ]; then
    echo "No active peers were retrieved from the RPC endpoints."
else
    # Displaying active peers
    echo -e "\nActive Peers:\n$ALL_PEERS"
    
    # Saving active peers to peersnode.txt file
    echo -e "$ALL_PEERS" > peersnode.txt
    echo -e "\nPeers list saved to peersnode.txt"
fi