There are some examples in this repo which are not tested completely to analyse the impact, but I just wanted to perform the concept of this attack (starting many streams and immediately sending RST_STREAM frame to avoid reaching MAX_CONCURRENT_STREAMS).

I use H2SpaceX low level HTTP/2 library which I created for exploiting Single Packet Attack

• There are 2 examples:
  • Example 1
    • Sending 10000 GET requests and sending RESET STREAM frames after each request immediately
  • Example 2
    • Sending 100000 POST requests (with single packet attack technique) which causes server to wait for last byte, and then sending RESET STREAM frame after each request
    • This Example also uses threading to open more H2 connections.

• Do More
  • You can read more about using H2SpaceX to send raw frames.
  • Quick Start Example for Single Packet Attack
  • H2Frames
• Read More
  • HTTP/2 Rapid Reset Attack by Cloudflare
  • Lots of References at cve.org