WebSocket for Android

Links
- RFC6455（https://triple-underscore.github.io/RFC6455-ja.html）

# WebSocket libraries
- [okhttp-ws](https://github.com/square/okhttp/tree/master/okhttp-ws)
- [Socket.io](https://github.com/socketio/socket.io-client)
- [Java-websocket](https://github.com/TooTallNate/Java-WebSocket)
- [java.net.Socket](https://developer.android.com/reference/java/net/Socket.html)

## okhttp-ws
- [issue](https://github.com/square/okhttp/issues/2696)
- [show websocket label](https://github.com/square/okhttp/labels/websockets)
- [WebSocketEcho.java](https://github.com/square/okhttp/blob/master/samples/guide/src/main/java/okhttp3/recipes/WebSocketEcho.java)

## My sample
- [WebSocketSample](https://github.com/kaelaela/WebSockcetSample)

### Retrofit?
- [issue](https://github.com/square/retrofit/issues/924)
- [commit](https://github.com/square/retrofit/commit/3cb49098871e9a71c4f96c46e61fc48446af3f38)

Transcript

1. WebSocket　 For Android @kaelaela(Yuichi Maekawa) Twitter: kaelaela31 Github: kaelaela
2. Overview of WebSocket • Bidirectional communication • port: 80 or 443 • scheme: ws or wss • binary support • RFC6455
3. Pros • No request header(So, hi-Speed!) • Real time communication • available HTTP resource(proxy, filter, auth...)
4. Cons • Difficult error handling • Difficult re-connection handling • Do not control message priority
5. Popular WebSocket libraries • Socket.io • Java-websocket • Okhttp-ws • java.net.Socket
6. Using WebSocket with OkHttp • Repos 　　 https://github.com/square/okhttp/tree/master/okhttp-ws Note: This module's API should be considered experimental and may be subject to breaking changes in future releases.
7. Using WebSocket with OkHttp • add dependencies ※ need permission: android.permission.INTERNET • create WebSocketListener extends class …show my sample code. compile 'com.squareup.okhttp3:okhttp-ws:3.4.1'
8. Sample code • Okhttp-ws: repo 　　Only 7 classes :-) 　　sample class: WebSocketEcho.java WebSocet test: https://www.websocket.org/echo.html • My sample https://github.com/kaelaela/WebSockcetSample
9. History of okhttp-ws • Version 2.3.0: Beta release • Version 2.4.0-RC1: Bug fix • Version 2.4.0: WebSocketListener has incompatible changes. • Version 2.6.0: ◦ WebSocket API now uses RequestBody and ResponseBody for messages. ◦ Bug fix • Version 3.1.0: WebSockets now defer some writes. • Version 3.3.1: Bug fix
10. Milestone of okhttp-ws v3.5(Due by August 31, 2016) • some bug fix v3.6(Due by September 30, 2016) • some bug fix • status code enhancement(issue) But, most issues are deferred. Let pray. more information: show websocket label
11. Retrofit? maybe add v2.2!!!(No due date. 29% complete at 2016-08-21.) • Issue #924 • Commit interface Service { @GET("/chat/{id}") Call<WebSocket> chat(@Path("id") String id); }
12. Thx ;-) Http2? I don’t know.