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tcpkali

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description tcpkali Overview

tcpkali is an open-source command-line load generator for testing TCP and WebSocket servers. It can create large numbers of simultaneous connections, transmit configurable message patterns, and report measurements such as connection rates, traffic volume, and latency. The tool is intended for engineers evaluating server capacity, connection handling, proxies, messaging systems, and other network services under sustained or rapidly changing load.

help tcpkali FAQ

How do I install tcpkali?

tcpkali can be installed from its GitHub repository by building from source, or through package managers on certain platforms. On macOS, it is available via Homebrew, which simplifies installation considerably.

Can tcpkali test WebSocket servers as well as raw TCP?

Yes, tcpkali supports both raw TCP and WebSocket server load testing. It can establish large numbers of concurrent WebSocket connections and transmit configurable message patterns to simulate real-world traffic.

How is tcpkali different from Apache JMeter for load testing?

tcpkali is a lightweight command-line tool focused on high-volume TCP and WebSocket connection generation, while JMeter is a full-featured testing platform with a GUI. tcpkali is designed to open massive numbers of simultaneous connections with minimal system overhead.

What metrics does tcpkali report during a test?

tcpkali reports connection rates, traffic volume, and latency measurements during and after a load test run. These metrics help engineers understand how their TCP or WebSocket server performs under heavy concurrent connection pressure.

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