WebSocket package for Go(go programing language) fasthttp.

go get


Gorilla WebSocket

Gorilla WebSocket is a Go implementation of the WebSocket protocol.

This fork adds support for the Go HTTP package fasthttp, which is a high performance, byte slice oriented alternative to net/http.

Note that

The original repo is Gorilla WebSocket, and this project is fork from leavengood/websocket. I am not the author, I just removed the supported for net/http, improved the Upgrader and provided some examples for fasthttp.



The Gorilla WebSocket package provides a complete and tested implementation of the WebSocket protocol. The package API is stable.


go get

Protocol Compliance

The Gorilla WebSocket package passes the server tests in the Autobahn Test Suite using the application in the examples/autobahn subdirectory.

Gorilla WebSocket compared with other packages
RFC 6455 Features
Passes Autobahn Test Suite Yes No
Receive fragmented message Yes No, see note 1
Send close message Yes No
Send pings and receive pongs Yes No
Get the type of a received data message Yes Yes, see note 2
Other Features
Limit size of received message Yes No
Read message using io.Reader Yes No, see note 3
Write message using io.WriteCloser Yes No, see note 3


  1. Large messages are fragmented in Chrome's new WebSocket implementation.
  2. The application can get the type of a received data message by implementing a Codec marshal function.
  3. The io.Reader and io.Writer operate across WebSocket frame boundaries. Read returns when the input buffer is full or a frame boundary is encountered. Each call to Write sends a single frame message. The Gorilla io.Reader and io.WriteCloser operate on a single WebSocket message.