我正在尝试构建一个使用 websockets 的角度客户端，并且我正在使用 @stomp/ng2-stompjs 我正在遵循本指南https://stomp-js.github.io/guide/ng2-stompjs/ng2-stomp-with -angular7.html
除了我需要在 connectHeaders 中设置用于验证服务器端的令牌之外，一切都运行良好，为此我读到我需要使用 beforeConnect 函数
我尝试了各种方式，但我不明白如何使用它，它卡住或发送一个空令牌
我的 rxStompConfig：
导出类 RxStompConfig 扩展 InjectableRxStompConfig {
constructor(private userService: UserService) {
super();
this.brokerURL = env.wsServerBaseUrl;
// Interval in milliseconds, set to 0 to disable
this.heartbeatIncoming = 0; // Typical value 0 - disabled
this.heartbeatOutgoing = 20000; // Typical value 20000 - every 20 seconds
// Wait in milliseconds before attempting auto reconnect
// Set to 0 to disable
// Typical value 500 (500 milli seconds)
this.reconnectDelay = 5000;
// Will log diagnostics on console
// It can be quite verbose, not recommended in production
// Skip this key to stop logging to console
this.debug = (msg: string): void => {
console.log(new Date(), msg);
};
console.log('Constructor ' + this.connectHeaders);
this.beforeConnect = (): Promise<void> => {
return new Promise<void>((resolve, reject) => {
this.userService.currentToken.subscribe(token => {
console.log('Subscribed');
if (token) {
console.log('Resolved ' + token);
this.connectHeaders = { Authorization: `Bearer ${token}`};
resolve();
}
});
});
};
}
我从进行身份验证并设置令牌的服务中获取令牌
这是 currentToken 方法：
get currentToken(): Observable<string> {
return this.$token.asObservable();
}
有人可以帮我吗？