Swift Websocket Server Example using Vapor 4.0

This project includes a minimum working example for a websocket server written in Swift. To interact with it I recommend using websocat (Github-Link).

Part of the challenge was to binary-encode and decode JSON payload into predefined Swift structs which are stored in the Sources/App/websocket/messages folder.

How to use

Build and run using swift build and swift run
In this example the websocket is served under the /channel path. In the terminal connect to the websocket server using websocat:
```
# '-b' transfers payload binary encoded
websocat -b ws://127.0.0.1:8080/channel
```
Paste into the console the JSON payload in the valid format (it is of type WebsocketMessage<Connect>):
```
{"client":"C13C2DA8-13FA-4BA6-A361-61488AC5B66A","data":{"connect":true}}
```
The websocket server should return the following message which should be displayed in the terminal decoded as string:
```
{"client":"C13C2DA8-13FA-4BA6-A361-61488AC5B66A","data":{"name":"Adrian","male":true,"age":33}}
```

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Comments

Best example so far.

Hi, and thanks for creating the best example Iv'e been able to find. It compiles and runs on macOS, but unfortunatley not on Linux. On the iMac, and using an app called Socket Debugger, sending {"client":"C13C2DA8-13FA-4BA6-A361-61488AC5B66A","data":{"connect":true}} only returns a pong. I'm hoping you'll consider Linux and and implementing WSS secure sockets. Looking through the code, I can't find a way to customise the host address and port, because on Linux I would need it to run on 0.0,0,0 and a port of my choice. Do keep up the good work.

opened by ea7kir 2