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Binary Data Transfer Benchmark for WebSocket-Node

This benchmark reports client -> server -> client binary data transfer latency on websocket and calculates the throughput (kbit per second). The binary data is randomly generated, and the websocket protocol is version 13.

Dependencies Install

$ npm install

Quick Start on localhost

$ npm install
$ node app.js&
$ node client.js 1048576 5


app.js [https=false]

  • If the first argument is given, app.js starts listening to https (and wss). If this option is on, app.js requires server.cert and server.key files.

client.js dataSize, numberOfMeasurement, [https=false]

  • The first argument is dataSize (Bytes) in decimal to send.
  • The second argument decides the number of Measurements for averaging (denominator of average).
  • If the third argument is given, client.js uses https (and wss).


In order to quickly calculate the dataSize, `echo "2^20"|bc` tricks can be useful. For example, benchmarking 1MiB (= 2^20) data transferring performance, use

 $ node client.js `echo "2^20"|bc` 5

In order to run on a remote server, edit client.js and change the serverName.