MCSeeker/README.md

What is this?

This scans for MineCraft servers... really really fast!

Getting Started

• Clone this repository somewhere.
• Run npm install from within this directory.

Usage

Run node ./scanner.js [options] --ip <ip range>

Examples

node ./scanner.js --ip 192.168.1.0/24 --port 25565-25569 --show-desc --min-players 1 --max-players 100 --out report.csv node ./scanner.js --ip 192.168.1.0/24 --port 25565-25569 --show-desc --min-players 1 --max-players 100 --version '1.8.*' --out 1.8.x-servers.csv node ./scanner.js --ip 192.168.1.0/24 --port 25565-25569 --show-desc --min-players 1 --max-players 100 --version '*forge*' --out forge-servers.csv

CLI Options

• --ip <ip> - IP Address or Range of IP Addresses with CIDR notation (eg- 192.168.1.0/24)
• --port <ports> - Ports to look for minecraft servers on. (Default: 25565-25566)
• --min-players <count> - Minimum number of players.
• --max-players <count> - Maximum player count.
• --version <glob expression> - Glob expression to filter version (eg- 1.19.*, or 1.1*.*). (Default: *)
• --conc <howmany> - How many concurrent connections to use for scanning. (Default is 256)

Output Options

• --show-desc - Enable showing of server description in output.
• --quiet - Silence terminal output.

Output File Options

• --out <filename> - Output to CSV file (Can be opened as a spreadsheet in MS Office, Google Docs, etc.)
• --format <csv|txt|txt-connect-only> - Output format (txt-connect-only for ip:port list format)
• --log-desc - Output server discription to output file.

Geo Location

• --geo-ip - Use IP Geolocation database.
• --geo-coords - Add geo-coordinates to output.
• --maxmind-key - Provide a key for maxmind database download.

By really fast, I mean really fast!

# time node ./scanner.js --ip 135.148.60.0/24 --show-desc --quiet --out example.csv
Scanning ports 25565-25566 on 135.148.60.0/24
Scan finished!

real    0m3.183s
user    0m0.825s
sys     0m0.334s
# cat example.csv | wc -l
85

In this example it took 3.183 seconds to scan 255 IP addresses, and find 85 MineCraft servers. At this speed, a full /16 (123.45.0.0 - 123.45.255.255) will take about 13.5 minutes to scan.

Limitations

• Fails to scan more than a /10 without kicking the bucket... so you should probably stick to that or smaller ranges.
• Working on a Minecraft bot client... doesn't work though... you can see how badly it doesn't work by using --enable-client flag... it is totally broken. Don't use it.