Solana Gossip Latency Checker for Doublezero

This script checks the status and latency of Solana validators connected to the doublezero0 network interface. It correlates IP addresses from the local routing table with Solana's gossip and validator information to determine if an IP belongs to an active validator.

Features

• Fetches IP addresses from the doublezero user list.
• Retrieves validator information using the solana CLI.
• Pings each IP to measure latency.
• Identifies if an IP address belongs to an active Solana validator.
• Outputs the results to a CSV file for easy analysis.

How to Use

```bash
python3 dz_latency.py
```

Flags:

• --ip_list <file_name> - Use to read a list of IPs using instead of routing table. This is useful for back-to-back latency comparison between Internet and Doublezero network.
• --no_geo - Disable geolocation.

The script will then execute the necessary commands and generate a dz_latency_result.csv file in the same directory.

How it Works

The script performs the following steps:

1. Get DZ client IPs: It runs doublezero user to get a list of IP addresses tagged as SolanaValidator
2. Fetch Solana Data: It uses the solana CLI to get three sets of data:
   • A list of all nodes in the gossip table (solana gossip).
   • A list of all active validators (solana validators).
   • A list of validator information, including names (solana validator-info get).
3. Process IPs: For each IP address, the script:
   • Pings the IP to measure latency.
   • Looks up the IP in the gossip data to find its associated validator identity public key.
   • Checks if the identity public key is in the list of active validators.
   • Looks up geolocation using ip-api.com and adds city/country to CSV file.
4. Generate CSV: The results are compiled and saved to dz_latency_result.csv.