ksp replay

Command Reference

Replay recorded pcapng traffic streams against a KSP endpoint to test idempotency and sliding window rejection.

Session & Security

RFC § 14 — Sliding Window Replay Protection

Purpose

Replay recorded pcapng traffic streams against a KSP endpoint to test idempotency and sliding window rejection.

Syntax

Command-line specification

bash / powershell

ksp replay --trace <PCAP_FILE> --target <URI> [OPTIONS]

Options & Flags

Option Flag	Description
--trace <FILE>	Path to input `.pcapng` trace capture file containing historical KSP packets.
--target <URI>	Target server address to inject recorded frames into.
--speed <MULT>	Playback speed multiplier (e.g., `1.0` for real-time, `10.0` for stress test).

Example Usage

Example command

ksp replay --trace ksp-session.pcapng --target 127.0.0.1:9876

Expected Output

  [+] Loading trace: ksp-session.pcapng (142 packets)
  [+] Target server: 127.0.0.1:9876
  [+] Replaying frames at 1.0x speed...

  [REPLAY] Injecting Packet #01 (StreamID: 1 | Seq: 104)...
  [REPLAY] Server response: REPLAY_DETECTED (Frame dropped by sliding window)
  [✔] Replay protection verified! 100% of duplicated sequence numbers were correctly rejected by target.

Implementation Notes

Crucial testing utility for validating that custom server implementations strictly adhere to RFC § 14 replay rejection.

Related CommandsView All 50 Commands →

ksp capture

ksp security

CLI Installation Guide· Quick Start Workflow· GitHub Source Repository

Previous Commandksp security Next Commandksp session