Roughtime UDP Load Test Tool

rtflood.py is a high-throughput roughtime request sender designed to exercise a target service with many one-shot UDP datagrams. The tool currently sends draft-12 messages.

Features

• Sends each packet on a separate UDP socket, then closes the socket immediately.
• Appends a random 32-byte nonce to every packet.
• Computes a server tag from a base64-encoded public key using SHA-512 and truncation.
• Uses worker threads for concurrent packet transmission.
• Supports total packet count, duration limits, and quiet mode.

Requirements

• Python 3.8+
• pycryptodomex

Install the dependency with:

pip install pycryptodomex

Usage

python rtflood.py [OPTIONS] HOSTNAME PORT PUBLIC_KEY

Positional arguments

• hostname - target hostname or IP address
• port - target UDP port
• public_key - target server public key in base64 format

Options

• --workers WORKERS - number of concurrent sender threads (default: 16)
• --count COUNT - total number of packets to send (0 = run until interrupted)
• --duration DURATION - run time in seconds (0 = no duration limit)
• --quiet - suppress periodic statistics output

Example

python rtflood.py --workers 32 --count 10000 --duration 10 roughtime.example.com 4556 pJVdDXLNvbuNfU6Na7K+MjzqUg2VVOM5A6umuL4dZgU=

Notes

• The tool does not wait for server replies and is optimized for raw transmit throughput.
• Use with caution and only against systems you are authorized to test.