onotelli/justniffer — Justniffer Just A Network TCP Packet Sniffer.

Description and use

**Brief Summary**
Justniffer is a lightweight, C‑based TCP packet sniffer that captures network traffic, formats it into custom logs (including web‑server‑style access logs), measures response times, and extracts files from HTTP streams. It serves as a reusable backend observability tool that lets teams quickly add traffic‑analysis capabilities without building their own packet‑capture infrastructure.

**Value Proposition**

• **Accelerates API/service delivery** – By providing out‑of‑the‑box traffic logging and response‑time metrics, teams can ship new services faster and focus on business logic rather than reinventing packet‑capture pipelines.
• **Standardizes observability** – The generated logs follow familiar web‑server formats, making them instantly compatible with existing log‑aggregation, monitoring, and alerting stacks.
• **Reusable infrastructure** – Acts as a shared “network‑layer” service that multiple microservices or environments can tap into, reducing duplicated effort across projects.

**Practical Adoption Path**

1. **Evaluate the CLI/SDK** – Clone the repo, build the C binary (standard make), and run it against a test interface to verify log format and file extraction meet your needs.
2. **Integrate with your logging pipeline** – Point Justniffer’s output to your log collector (e.g., Fluentd, Loki, ELK) or feed it directly into a monitoring system for response‑time alerts.
3. **Wrap as a side‑car or service** – Deploy the binary as a Docker container or systemd service alongside your API servers; configure it to listen on a tap interface or a mirrored port.
4. **Scale and automate** – Use orchestration tools (Kubernetes DaemonSet, Ansible) to roll it out across all nodes that host your services, ensuring consistent observability across the fleet.

**Production Readiness**

• **Activity & Adoption** – Updated within the last week, 228 stars, 59 forks, and a healthy set of GitHub topics indicate an active community.
• **Maturity** – Core functionality (packet capture, log formatting, file extraction) is stable; the C implementation offers low overhead, suitable for high‑throughput environments.
• **Risk Profile** – No glaring metadata or licensing issues identified, but a final security audit and confirmation of a dedicated maintainer are advisable before a full‑scale rollout.

Overall, Justniffer is a high‑readiness OSS candidate for teams that need a quick, reliable way to add network‑level observability and log standardization to their backend services.

Problem

onotelli/justniffer helps teams reuse service infrastructure instead of rebuilding common backend pieces.

Outcome

High for an OSS candidate: recent activity, adoption, and ecosystem signals are strong enough for a serious pilot.

Workflow

• ship API services faster
• reuse backend infrastructure
• standardize service patterns

Evidence

Justniffer Just A Network TCP Packet Sniffer. Justniffer is a network protocol analyzer that captures network traffic and produces logs in a customized way, can emulate web server log files, track response times and extract all "intercepted" files from the HTTP traffic

Source