Angular 2 http does not catch connection refused error

Question

I want to catch all http errors to inform the user of an occurred problem.

So, I created a method that does a http get with a catch.

get(path: string): Promise<any> {
  let headers = new Headers();
  return this.http.get(path, { headers: headers })
    .toPromise()
    .then(response => { ... })
    .catch((response: Response) => { this.errorHandler(response); });
}

When the path parameter is '/fault-url' the catch is handled as expected.

But when the path is 'http://localhost:5000/fault-url' the error is not catched by the catch method. I've added logging to all different places, but it seams the get method just aborts. The console log shows following errors

OPTIONS http://localhost:5000/fault-url net::ERR_CONNECTION_REFUSED

EXCEPTION: Response with status: 0 for URL: null

Uncaught Response {_body: ProgressEvent, status: 0, ok: false, statusText: "", headers: Headers…}

Does http realy abort or am i doing something wrong?

Tinie Sluijter · Accepted Answer · 2016-12-14 14:22:46Z

1

After upgrading to Angular 2.3.0 the problem is solved.

answered Dec 14, 2016 at 14:22

Tinie Sluijter

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2 Comments

duardbr Over a year ago

Can you give me details about how to handle this error ?

Tinie Sluijter Over a year ago

Sorry @duardbr, I don't understand your question. If an error occurs while doing a get request, the catch returns the reason of the failure. This reason can for example be used to inform the user.

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