CenDPI

Requirements

• Go 1.23.2
• Root privileges (due to the need for raw socket access)

Usage

Flags

• -config: Required — Path to the global configuration file (e.g., measurement_http.yml).
• -target: Required — Path to the target configuration file (e.g., targets.jsonl).
• -resultPath: Required — Path to the result file (e.g., result.jsonl).
• -rounds: optional — Send each probe N times.
• -concurrency: optional — Number of concurrent measurements.

Building the Program

Locally

To build the program, run the following command in the project directory:

go build -o cendpi cmd/app/main.go

This will create an executable called cendpi.

Example Usage

Drop outgoing RSTs (required)

sudo iptables -A OUTPUT -p tcp --tcp-flags RST RST -j DROP

Turn off segmentation offloading (optional)

sudo ethtool -K <interface> gro off gso off tso off

Running directly on the host machine

To run the program on your host machine (with root privileges):

sudo ./cendpi -config measurement_https.yml -target targets.jsonl -resultPath result.jsonl -rounds 3 -concurrency 1000