# Gorilla WebSocket [![GoDoc](https://godoc.org/github.com/gorilla/websocket?status.svg)](https://godoc.org/github.com/gorilla/websocket) [![CircleCI](https://circleci.com/gh/gorilla/websocket.svg?style=svg)](https://circleci.com/gh/gorilla/websocket) Gorilla WebSocket is a [Go](http://golang.org/) implementation of the [WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol. ### Documentation * [API Reference](https://pkg.go.dev/github.com/gorilla/websocket?tab=doc) * [Chat example](https://github.com/gorilla/websocket/tree/master/examples/chat) * [Command example](https://github.com/gorilla/websocket/tree/master/examples/command) * [Client and server example](https://github.com/gorilla/websocket/tree/master/examples/echo) * [File watch example](https://github.com/gorilla/websocket/tree/master/examples/filewatch) ### Status The Gorilla WebSocket package provides a complete and tested implementation of the [WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol. The package API is stable. ### Installation go get github.com/gorilla/websocket ### Protocol Compliance The Gorilla WebSocket package passes the server tests in the [Autobahn Test Suite](https://github.com/crossbario/autobahn-testsuite) using the application in the [examples/autobahn subdirectory](https://github.com/gorilla/websocket/tree/master/examples/autobahn). ### Gorilla WebSocket compared with other packages <table> <tr> <th></th> <th><a href="http://godoc.org/github.com/gorilla/websocket">github.com/gorilla</a></th> <th><a href="http://godoc.org/golang.org/x/net/websocket">golang.org/x/net</a></th> </tr> <tr> <tr><td colspan="3"><a href="http://tools.ietf.org/html/rfc6455">RFC 6455</a> Features</td></tr> <tr><td>Passes <a href="https://github.com/crossbario/autobahn-testsuite">Autobahn Test Suite</a></td><td><a href="https://github.com/gorilla/websocket/tree/master/examples/autobahn">Yes</a></td><td>No</td></tr> <tr><td>Receive <a href="https://tools.ietf.org/html/rfc6455#section-5.4">fragmented</a> message<td>Yes</td><td><a href="https://code.google.com/p/go/issues/detail?id=7632">No</a>, see note 1</td></tr> <tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.1">close</a> message</td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td><a href="https://code.google.com/p/go/issues/detail?id=4588">No</a></td></tr> <tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.2">pings</a> and receive <a href="https://tools.ietf.org/html/rfc6455#section-5.5.3">pongs</a></td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td>No</td></tr> <tr><td>Get the <a href="https://tools.ietf.org/html/rfc6455#section-5.6">type</a> of a received data message</td><td>Yes</td><td>Yes, see note 2</td></tr> <tr><td colspan="3">Other Features</tr></td> <tr><td><a href="https://tools.ietf.org/html/rfc7692">Compression Extensions</a></td><td>Experimental</td><td>No</td></tr> <tr><td>Read message using io.Reader</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextReader">Yes</a></td><td>No, see note 3</td></tr> <tr><td>Write message using io.WriteCloser</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextWriter">Yes</a></td><td>No, see note 3</td></tr> </table> Notes: 1. Large messages are fragmented in [Chrome's new WebSocket implementation](http://www.ietf.org/mail-archive/web/hybi/current/msg10503.html). 2. The application can get the type of a received data message by implementing a [Codec marshal](http://godoc.org/golang.org/x/net/websocket#Codec.Marshal) function. 3. The go.net 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.