53 lines
1.2 KiB
Dart
53 lines
1.2 KiB
Dart
|
library angel_websocket;
|
||
|
|
import 'dart:math';
|
||
|
|
|
||
|
|
String _randomString(int length) {
|
||
|
|
var rand = new Random();
|
||
|
|
var codeUnits = new List.generate(
|
||
|
|
length,
|
||
|
|
(index){
|
||
|
|
return rand.nextInt(33)+89;
|
||
|
|
}
|
||
|
|
);
|
||
|
|
|
||
|
|
return new String.fromCharCodes(codeUnits);
|
||
|
|
}
|
||
|
|
|
||
|
|
/// A WebSocket message sent from server to client, or vice-versa.
|
||
|
|
class AngelMessage {
|
||
|
|
String id;
|
||
|
|
String service;
|
||
|
|
String method;
|
||
|
|
Map body;
|
||
|
|
|
||
|
|
AngelMessage(String this.service, String this.method,
|
||
|
|
{Map this.body: const {}}) {
|
||
|
|
id = _randomString(32);
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Parses a Map into an AngelMessage.
|
||
|
|
AngelMessage.fromMap(Map msg) {
|
||
|
|
bool invalid = !(msg['service'] is String) ||
|
||
|
|
(msg['service'] is String && msg['service'].isEmpty);
|
||
|
|
invalid = invalid || !(msg['method'] is String) ||
|
||
|
|
(msg['method'] is String && msg['method'].isEmpty);
|
||
|
|
|
||
|
|
if (invalid) {
|
||
|
|
throw new Exception("Invalid message supplied.");
|
||
|
|
} else {
|
||
|
|
this.id = _randomString(32);
|
||
|
|
this.service = msg['service'];
|
||
|
|
this.method = msg['method'];
|
||
|
|
this.body = msg['body'] ?? {};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
Map toMap() {
|
||
|
|
return {
|
||
|
|
'id': id,
|
||
|
|
'service': service,
|
||
|
|
'method': method,
|
||
|
|
'body': body
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}
|