I am going mental. So I have the code below. When I run it as is, I get
Access to XMLHttpRequest at 'URL' from origin 'http://localhost:8000' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.
If I remove the CORS header I get the same error. I am not sure what I am doing wrong. I will tell you if I curl the URL it works fine. What am I missing here.
Also, I have tried this using both axios.get AND fetch so I am open to both solutions.
getRoomUserCount: function () {
return axios
.get('URL', {
responseType: "json",
});
},
What it SHOULD return is an array of data, then using the code below I grab the array
mounted: function () {
this.roomUserCount = this.getRoomUserCount();
},
CORS policy is ALWAYS server related. You cannot change anything on your client-side to change that.
Enable CORS on your server to fix this.
I am building a web application with a go backend and a vue.js frontend.
I want to do a simple sign in form in which I send the sign in request from a method of my component with Axios (or fetch) and get in response a JSON object of the user and a session token in the cookie to be stored and reused in future requests to the server.
The code of my components method :
class LoginComponent extends Vue {
sendLogin (): void {
axios.post<User>('http://192.168.1.227:8080/signin', body)
.then(res => console.log('Axios Response :', res)
.catch(err => console.error('Axios Error :', err))
}
}
The part of the code of the go server :
go API
with the headers :
go headers
the front and backend are on different IP addresses in a local network and they communicate through HTTP.
The problem that I faced is that when receiving the response after the post request to login I don't have access to the cookie that has been set by the server. When I use Axios to analyze the response the cookie isn't in the headers whereas when I look at the network logs in the browser, the cookie is in the headers but it is not saved and it is not sent when I do another request.
Also, the only header that is visible with Axios is Content-Type : application/json; charset=UTF-8
I tried many things to be able to see this cookie but it doesn't work :
adding { withCredentials: true } to the axios request or axios.defaults.withCredentials = true to the axios instance only stops the request because of CORS.
changing all the Access-Control headers to "*" didn't change anything
using { auth: { username: 'foo', password: 'bar' } } in the axios options instead of the body
The only thing that worked and automatically saved the cookie was to send the request via the attributes of the form html tag, like so :
<form method="POST" action="http://192.168.1.227/signin">
...
</form>
But this way I am redirected to the JSON response object and not to one of my routes from vue-router and I can't access the User object in my app.
Is there any way that my problem can be solved?
Ok so the comment of Зелёный was the answer.
I needed the go server to set Access-Control-Allow-Origin: http://192.168.1.218:8080 (the address of the frontend) and then configure axios with { withCredentials: true } to be able to automatically store the cookie. Although I still don't see it when I do a console.log on the axios response, it is successfully stored and reused for each call to the server.
I've got a problem with axios and heroku. Maybe some short introduction before.
The problem with CORS has been solved and i my apps run on localhost and on herokuapp.com. The only thing which is currently not working is my app running with heroku local web.
For the backend call I using axios which is referencing my backend api from an environment file:
axios
.get(process.env.VUE_APP_ROOT_API + "/resource")
.then(response => (this.receipt = response.data));
}
.env.local:
VUE_APP_ROOT_API=http//:0.0.0.0:5002 #5002 is my backend
This produces the following wrong axios call:
GET http://0.0.0.0:5001/http//:0.0.0.0:5002/resource #5001 is my frontend
I cannot explain how this GET is generated. Printing out the request url with
axios.interceptors.request.use(request => {
console.log("Starting Request", request);
return request;
});
is showing the correct URL http//:0.0.0.0:5002/resource...
Any solutions?
This is embarassing, I had a type:
http:// instead of http//:
See: Quasar Axios request wrong URL (Double URL)
I have been trying to figure out how to get this Vue project to work with the Lyft API. I have been able to get an Auth Token successfully created from the three-legged procedure, but I am unable to get the available drive types https://api.lyft.com/v1/ridetypes endpoint from the localhost:8080. It does work on Postman.
It keeps stating:
Access to XMLHttpRequest at
'https://api.lyft.com/v1/ridetypes?lat=37.7752315&lng=-122.418075'
from origin 'http://localhost:8080' has been blocked by CORS policy:
Response to preflight request doesn't pass access control check: No
'Access-Control-Allow-Origin' header is present on the requested
resource.
I had tried doing a proxy using a vue.config.js file:
module.exports = {
devServer: {
proxy: {
'/lyftapi': {
target: 'https://api.lyft.com/v1',
ws: true,
changeOrigin: true
}
}
}
}
I been around other parts of Stack Overflow, and this is the closest thing to my problem, but no answers.
CORS error in Lyft API started recently
Any suggestions?
Axios Get Call
axios.get('/ridetypes', {
baseURL: 'https://api.lyft.com/v1',
headers: {
'Authorization': this.lyftToken,
},
params: {
lat: lat.toString(),
lng: long.toString()
}
})
If it means anything, I am able to make successful GET calls to retrieve Uber products, but not so much the Auth Token (unless its from Postman).
Lyft-API has disabled CORS, this means that browsers will block calls to api.lyft.com.
Vue won't be able to do anyting about this as this is a browser security policy.
Luckily there is nothing from stoping you to make this call from your own server.
One solution is to forward the request and response using your own server. You make a call to your server, the server makes a call to lyft, waits for the response and then responds your request.
This is not a vue only solution.
I have created an API endpoint using the Django python framework that I host externally. I can access my endpoint from a browser (mydomain.com/endpoint/) and verify that there is no error. The same is true when I run my test django server on locally on my development machine (localhost:8000/endpoint/). When I use my localhost as an endpoint, my json data comes through without issue. When I use my production domain, axios gets caught up with a network error, and there is not much context that it gives... from the debug console I get this:
Error: Network Error
at createError (createError.js:16)
at XMLHttpRequest.handleError (xhr.js:87)
at XMLHttpRequest.dispatchEvent (event-target.js:172)
at XMLHttpRequest.setReadyState (XMLHttpRequest.js:554)
at XMLHttpRequest.__didCompleteResponse (XMLHttpRequest.js:387)
at XMLHttpRequest.js:493
at RCTDeviceEventEmitter.emit (EventEmitter.js:181)
at MessageQueue.__callFunction (MessageQueue.js:353)
at MessageQueue.js:118
at MessageQueue.__guardSafe (MessageQueue.js:316)
This is my axios call in my react native component:
componentDidMount() {
axios.get('mydomain.com/get/').then(response => { // localhost:8000/get works
this.setState({foo:response.data});
}).catch(error => {
console.log(error);
});
}
If you are trying to call localhost on android simulator created with AVD, replacing localhost with 10.0.2.2 solved the issue for me.
It seems that unencrypted network requests are blocked by default in iOS, i.e. https will work, http will not.
From the docs:
By default, iOS will block any request that's not encrypted using SSL.
If you need to fetch from a cleartext URL (one that begins with http)
you will first need to add an App Transport Security exception.
change from localhost to your ip(192.168.43.49)
add http://
http://192.168.43.49:3000/user/
If you do not find your answer in other posts
In my case, I use Rails for the backend and I tried to make requests to http://localhost:3000 using Axios but every time I got Network Error as a response. Then I found out that I need to make a request to http://10.0.2.2:3000 in the case of the android simulator. For the iOS simulator, it works fine with http://localhost:3000.
Conclusion
use
http://10.0.2.2:3000
instead of
http://localhost:3000
update
might worth trying
adb reverse tcp:3000 tcp:3000
For me, the issue was because my Remote URL was incorrect.
If you have the URL is a .env file, please crosscheck the naming and also ensure
that it's prefixed with REACT_APP_ as react might not be able to find it if named otherwise.
In the .env file Something like REACT_APP_BACKEND_API_URL=https://appurl/api
can be accessed as const { REACT_APP_BACKEND_API_URL } = process.env;
Try
"Content-Type": "application/x-www-form-urlencoded",
Accept: "application/json"
If you are using android then open your command prompt and type ipconfig. Then get your ip address and replce it with localhost.
In my case, first I used http://localhost:8080/api/admin/1. Then I changed it to http://192.168.1.10:8080/api/admin/1. It worked for me.
Make sure to change localhost to your_ip_address which you can find by typing ipconfig in Command Prompt
Trying adding to your AndroidManifest.xml
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
I was facing the same issue.
i looked deeper and my
endpoint url was not correct.
By giving axios right exact url, my api worked like charm.
Hope it may help anyone
Above mentioned answers only works if you are using localhost but if your code is hosted on a server and Axios throwing Network Error then you can solve this by adding one line.
const config = {
method: 'post',
url: `${BASE_URL}/login`,
headers: {
'Content-Type': 'multipart/form-data'. <----- Add this line in your axios header
},
data : formData
};
axios(config).then((res)=> console.log(res))
I'm using apisauce dependancy & Adding header work for me with React Native Android.
Attach header with request like below:
import { create } from 'apisauce';
const api = create({
baseURL: {baseUrl},
headers: {
Accept: 'application/json',
'Content-Type': 'application/json'
}
});
export async function empLogin(data) {
try {
const response = api.post('Login', data);
return await response;
} catch (error) {
console.log(error);
return [];
}
}
before:
axios.get("http://localhost:3456/apt")
.then(
response => {
alert(JSON.stringify(response));
....
}
)
.catch(function(error) {
alert(error.message);
console.warn(error.response._response);
});
I get Error "Network error" Failed to connect to the localhost after that, I make some steps to resolved the error.
Network Error related to axios resloved by the disabling the system firewall and access from the system IP Address like
axios.get("http://192.168.12.10:3456/apt")
.then(
response => {
alert(JSON.stringify(response));
....
}
)
.catch(function(error) {
alert(error.message);
console.warn(error.response._response);
});
For me adding "Accept" in headers resolved the problem:
Accept: 'application/json'