Managing the status (e.g. 503) for Axios OPTIONS response

Question

Managing the status (e.g. 503) for Axios OPTIONS response

Note: mentions that there may be no need to worry as the issue might not occur on an actual device.

In my VueJS hybrid (Cordova) app, I am utilizing Axios to make API calls.

Axios correctly initiates a 'preflight' OPTIONS request before my GET/POST requests. However, if the API responds with a 503 at that stage, my error handling code does not trigger.

HTTP.post(url, data, {headers: {Authorization: 'Bearer ' + token.getAccessToken()}})
  .then(response => response)
  .catch(error => {
    // This section is never reached
  });

How can I capture and handle this error status?

Edit: Chrome dev tools screenshot provided below:

https://i.sstatic.net/aknAx.png

javascript http vue.js http-headers axios

Answer 1

Answer №1

After thorough investigation, I successfully replicated the issue and implemented a straightforward solution outlined below:

axios.interceptors.response.use(null, (error) => {
    return Promise.reject(error);
});

My testing revealed that I could accurately capture errors and responses in various scenarios.

Answer 2

After thorough investigation, I successfully replicated the issue and implemented a straightforward solution outlined below:

axios.interceptors.response.use(null, (error) => {
    return Promise.reject(error);
});

My testing revealed that I could accurately capture errors and responses in various scenarios.

Answer 3

Answer №2

When Axios encounters a Network Error, the error message can be quite vague. To provide more detail when rethrowing the error, consider using the following approach to specify which request triggered the error and what specifically went wrong:

instance.interceptors.response.use(null, error => {
  if (error && error.message === 'Network Error') {
    throw new Error(`Possible CORS preflight error on network at ${error.config.url}`);
  }
  throw error;
});

Answer 4

When Axios encounters a Network Error, the error message can be quite vague. To provide more detail when rethrowing the error, consider using the following approach to specify which request triggered the error and what specifically went wrong:

instance.interceptors.response.use(null, error => {
  if (error && error.message === 'Network Error') {
    throw new Error(`Possible CORS preflight error on network at ${error.config.url}`);
  }
  throw error;
});

Answer 5

Answer №3

If you're curious about the type of HTTP status response Axios interceptor provides, check out this example:

    axios.interceptors.response.use(function (res) {
        return res;
      },
      (err) => {
        if(err.response.status == 403 || err.response.status == 503) {
            // Handle different error types
            obj[err.response.status] ? obj[err.response.status]() : obj["default"]();
        }
        return Promise.reject(err);
      });

Create a mapping with status callbacks for various behaviors.

const obj = {
    503 : () => console.log("Forbidden"),
    417 : () => console.log("I'm a teapot"),
    'default': () => console.log("Not handled")
}

Answer 6

If you're curious about the type of HTTP status response Axios interceptor provides, check out this example:

    axios.interceptors.response.use(function (res) {
        return res;
      },
      (err) => {
        if(err.response.status == 403 || err.response.status == 503) {
            // Handle different error types
            obj[err.response.status] ? obj[err.response.status]() : obj["default"]();
        }
        return Promise.reject(err);
      });

Create a mapping with status callbacks for various behaviors.

const obj = {
    503 : () => console.log("Forbidden"),
    417 : () => console.log("I'm a teapot"),
    'default': () => console.log("Not handled")
}

Managing the status (e.g. 503) for Axios OPTIONS response

Answer №1

Answer №2

Answer №3

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