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https://github.com/olahol/melody
:notes: Minimalist websocket framework for Go
https://github.com/olahol/melody
example framework go golang minimalist websocket websocket-framework
Last synced: about 1 month ago
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:notes: Minimalist websocket framework for Go
- Host: GitHub
- URL: https://github.com/olahol/melody
- Owner: olahol
- License: bsd-2-clause
- Created: 2015-05-13T20:38:32.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2024-07-25T18:08:25.000Z (about 2 months ago)
- Last Synced: 2024-07-25T21:08:01.508Z (about 2 months ago)
- Topics: example, framework, go, golang, minimalist, websocket, websocket-framework
- Language: Go
- Homepage:
- Size: 987 KB
- Stars: 3,638
- Watchers: 62
- Forks: 361
- Open Issues: 12
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
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README
# melody
[](https://app.codecov.io/github/olahol/melody)
[](https://goreportcard.com/report/github.com/olahol/melody)
[](https://godoc.org/github.com/olahol/melody)
> :notes: Minimalist websocket framework for Go.
Melody is websocket framework based on [github.com/gorilla/websocket](https://github.com/gorilla/websocket)
that abstracts away the tedious parts of handling websockets. It gets out of
your way so you can write real-time apps. Features include:
* [x] Clear and easy interface similar to `net/http` or Gin.
* [x] A simple way to broadcast to all or selected connected sessions.
* [x] Message buffers making concurrent writing safe.
* [x] Automatic handling of sending ping/pong heartbeats that timeout broken sessions.
* [x] Store data on sessions.
## Install
```bash
go get github.com/olahol/melody
```
## [Example: chat](https://github.com/olahol/melody/tree/master/examples/chat)
[](https://github.com/olahol/melody/tree/master/examples/chat)
```go
package main
import (
"net/http"
"github.com/olahol/melody"
)
func main() {
m := melody.New()
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "index.html")
})
http.HandleFunc("/ws", func(w http.ResponseWriter, r *http.Request) {
m.HandleRequest(w, r)
})
m.HandleMessage(func(s *melody.Session, msg []byte) {
m.Broadcast(msg)
})
http.ListenAndServe(":5000", nil)
}
```
## [Example: gophers](https://github.com/olahol/melody/tree/master/examples/gophers)
[](https://github.com/olahol/melody/tree/master/examples/gophers)
```go
package main
import (
"fmt"
"net/http"
"sync/atomic"
"github.com/olahol/melody"
)
var idCounter atomic.Int64
func main() {
m := melody.New()
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "index.html")
})
http.HandleFunc("/ws", func(w http.ResponseWriter, r *http.Request) {
m.HandleRequest(w, r)
})
m.HandleConnect(func(s *melody.Session) {
id := idCounter.Add(1)
s.Set("id", id)
s.Write([]byte(fmt.Sprintf("iam %d", id)))
})
m.HandleDisconnect(func(s *melody.Session) {
if id, ok := s.Get("id"); ok {
m.BroadcastOthers([]byte(fmt.Sprintf("dis %d", id)), s)
}
})
m.HandleMessage(func(s *melody.Session, msg []byte) {
if id, ok := s.Get("id"); ok {
m.BroadcastOthers([]byte(fmt.Sprintf("set %d %s", id, msg)), s)
}
})
http.ListenAndServe(":5000", nil)
}
```
### [More examples](https://github.com/olahol/melody/tree/master/examples)
## [Documentation](https://godoc.org/github.com/olahol/melody)
## Contributors
## FAQ
If you are getting a `403` when trying to connect to your websocket you can [change allow all origin hosts](http://godoc.org/github.com/gorilla/websocket#hdr-Origin_Considerations):
```go
m := melody.New()
m.Upgrader.CheckOrigin = func(r *http.Request) bool { return true }
```