In AngularJS, I had the following function, which worked fine:
$http.get( "fruits.json" ).success( $scope.handleLoaded );
Now I would like to change this from a file to a url (that returns json using some sweet Laravel 4):
$http.get( "http://localhost/fruitapp/fruits").success( $scope.handleLoaded );
The error I get is:
"NetworkError: 405 Method Not Allowed - http://localhost/fruitapp/fruits"
What's the problem? Is it because fruit.json was "local" and localhost is not?
From w3:
10.4.6 405 Method Not Allowed
The method specified in the Request-Line is not allowed for the resource
identified by the Request-URI. The response MUST include an Allow header
containing a list of valid methods for the requested resource.
It means the for the URL: http://localhost/fruitapp/fruits The server is responding that the GET method isn't allowed. Is it a POST or PUT?
The angular js version you are using would be <= 1.2.9.
If Yes, try this.
return $http({
url: 'http://localhost/fruitapp/fruits',
method: "GET",
headers: {
'Content-Type': 'application/json',
'Accept': 'application/json'
}
});
I had a similar issue with my SpringBoot project, I was getting the same error in the browser console but I saw a different error message when I looked at the back-end log, It was throwing this error: "org.springframework.web.HttpRequestMethodNotSupportedException, message=Request method 'DELETE' not supported " It turned out that I was missing the {id} parameter in the back-end controller:
** Wrong code :**
#RequestMapping(value="books",method=RequestMethod.DELETE)
public Book delete(#PathVariable long id){
Book deletedBook = bookRepository.findOne(id);
bookRepository.delete(id);
return deletedBook;
}
** Correct code :**
#RequestMapping(value="books/{id}",method=RequestMethod.DELETE)
public Book delete(#PathVariable long id){
Book deletedBook = bookRepository.findOne(id);
bookRepository.delete(id);
return deletedBook;
}
For me, it was the server not being configured for CORS.
Here is how I did it on Azure: CORS enabling on Azure
I hope something similar works with your server, too.
I also found a proposal how to configure CORS on the web.config, but no guarantee: configure CORS in the web.config. In general, there is a preflight request to your server, and if you did a cross-origin request (that is from another url than your server has), you need to allow all origins on your server (Access-Control-Allow-Origin *).
Related
I created an API endpoint using Google Cloud Functions and am trying to call it from a JS fetch function.
I am running into errors that I am pretty sure are related to either CORS or the output format, but I'm not really sure what is going on. A few other SO questions are similar, and helped me realize I needed to remove the mode: "no-cors". Most mention enabling CORS on the BE, so I added response.headers.set('Access-Control-Allow-Origin', '*') - which I learned of in this article - to ensure CORS would be enabled... But I still get the "Failed to fetch" error.
The Full Errors (reproducible in the live demo linked below) are:
Uncaught Error: Cannot add node 1 because a node with that id is
already in the Store. (This one is probably unrelated?)
Access to fetch at
'https://us-central1-stargazr-ncc-2893.cloudfunctions.net/nearest_csc?lat=37.75&lon=-122.5'
from origin 'https://o2gxx.csb.app' has been blocked by CORS policy:
Request header field access-control-allow-origin is not allowed by
Access-Control-Allow-Headers in preflight response.
GET
https://us-central1-stargazr-ncc-2893.cloudfunctions.net/nearest_csc?lat=37.75&lon=-122.5 net::ERR_FAILED
Uncaught (in promise) TypeError: Failed to fetch
See Code Snippets below, please note where I used <---- *** Message *** to denote parts of the code that have recently changed, giving me one of those two errors.
Front End Code:
function getCSC() {
let lat = 37.75;
let lng = -122.5;
fetch(
`https://us-central1-stargazr-ncc-2893.cloudfunctions.net/nearest_csc?lat=${lat}&lon=${lng}`,
{
method: "GET",
// mode: "no-cors", <---- **Uncommenting this predictably gets rid of CORS error but returns a Opaque object which seems to have no data**
headers: {
// Accept: "application/json", <---- **Originally BE returned stringified json. Not sure if I should be returning it as something else or if this is still needed**
Origin: "https://lget3.csb.app",
"Access-Control-Allow-Origin": "*"
}
}
)
.then(response => {
console.log(response);
console.log(response.json());
});
}
Back End Code:
import json
import math
import os
import flask
def nearest_csc(request):
"""
args: request object w/ args for lat/lon
returns: String, either with json representation of nearest site information or an error message
"""
lat = request.args.get('lat', type = float)
lon = request.args.get('lon', type = float)
# Get list of all csc site locations
with open(file_path, 'r') as f:
data = json.load(f)
nearby_csc = []
# Removed from snippet for clarity:
# populate nearby_csc (list) with sites (dictionaries) as elems
# Determine which site is the closest, assigned to var 'closest_site'
# Grab site url and return site data if within 100 km
if dist_km < 100:
closest_site['dist_km'] = dist_km
// return json.dumps(closest_site) <--- **Original return statement. Added 4 lines below in an attempt to get CORS set up, but did not seem to work**
response = flask.jsonify(closest_site)
response.headers.set('Access-Control-Allow-Origin', '*')
response.headers.set('Access-Control-Allow-Methods', 'GET, POST')
return response
return "No sites found within 100 km"
Fuller context for code snippets above:
Here is a Code Sandbox Demo of the above.
Here is the full BE code on GitHub, minus the most recent attempt at adding CORS.
The API endpoint.
I'm also wondering if it's possible that CodeSandbox does CORS in a weird way, but have had the same issue running it on localhost:3000, and of course in prod would have this on my own personal domain.
The Error would appear to be CORS-related ( 'https://o2gxx.csb.app' has been blocked by CORS policy: Request header field access-control-allow-origin is not allowed by Access-Control-Allow-Headers in preflight response.) but I thought adding response.headers.set('Access-Control-Allow-Origin', '*') would solve that. Do I need to change something else on the BE? On the FE?
TLDR;
I am getting the Errors "Failed to fetch" and "field access-control-allow-origin is not allowed by Access-Control-Allow-Headers" even after attempts to enable CORS on backend and add headers to FE. See the links above for live demo of code.
Drop the part of your frontend code that adds a Access-Control-Allow-Origin header.
Never add Access-Control-Allow-Origin as a request header in your frontend code.
The only effect that’ll ever have is a negative one: it’ll cause browsers to do CORS preflight OPTIONS requests even in cases when the actual (GET, POST, etc.) request from your frontend code would otherwise not trigger a preflight. And then the preflight will fail with this message:
Request header field Access-Control-Allow-Origin is not allowed by Access-Control-Allow-Headers in preflight response
…that is, it’ll fail with that unless the server the request is being made to has been configured to send an Access-Control-Allow-Headers: Access-Control-Allow-Origin response header.
But you never want Access-Control-Allow-Origin in the Access-Control-Allow-Headers response-header value. If that ends up making things work, you’re actually just fixing the wrong problem. Because the real fix is: never set Access-Control-Allow-Origin as a request header.
Intuitively, it may seem logical to look at it as “I’ve set Access-Control-Allow-Origin both in the request and in the response, so that should be better than just having it in the response” — but it’s actually worse than only setting it in the response (for the reasons described above).
So the bottom line: Access-Control-Allow-Origin is solely a response header, not a request header. You only ever want to set it in server-side response code, not frontend JavaScript code.
The code in the question was also trying to add an Origin header. You also never want to try to set that header in your frontend JavaScript code.
Unlike the case with the Access-Control-Allow-Origin header, Origin is actually a request header — but it’s a special header that’s controlled completely by browsers, and browsers won’t ever allow your frontend JavaScript code to set it. So don’t ever try to.
I am using angular JS to send some data to Payment Gateway.
Syntax for curl to send data as per documentation is:
curl https://www.mybank.co.uk/3dsecure
-H "Content-type: application/x-www-form-urlencoded"
-X POST
-d 'TermUrl=https://www.yourmerchantsite.co.uk/3DSecureConfirmation&PaReq=value-of-oneTime3DsToken&MD=merchantdatavalue'
However when I am doing it in Angular :
$http({
method: 'POST',
url: 'url',
headers: {'Content-Type': 'application/x-www-form-urlencoded',
'Accept': 'text/html'
},
data: $.param({TermUrl: obj.TermUrl ,Pareq: obj.Pareq }),
})
I am getting error
Possibly unhandled rejection: {"data":"<html><head><title>400 Bad
Request</title></head><body><h1>Bad Request</h1></body>
</html>","status":400,"config":
{"method":"POST","transformRequest":[null],"transformResponse":
[null],"jsonpCallbackParam":"callback","url":"payement gatway
url","headers":{"Content-Type":"application/x-www-form-urlencoded",
"Accept":"text/html,application/xhtml+xml"},"data":"TermUrl=url&Pare
q=value"},"statusText":"Bad Request","xhrStatus":"complete"}
Kindly suggest how to proceed with this one ?
First of all, you are experiencing a 400 Bad Request (https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/400) and not a 404 Not Found.
It usually means that you are not sending the right data to the server and the API is expecting some specific parameters (from the body usually).
Check the API, look at every parameter required from it - their types and how they should be sent (body param? query string? etc...).
You can use your browser network tab or tools like Postman to see what you are actually sending to the server and if it matches what the server is expecting you to send.
Check out 3D Secure's API reference, you should get back a detailed error code beside the http status code:
https://developer.paysafe.com/en/3d-secure/api/#/introduction/error-summary/common-errors
It should be easily debuggable.
I am trying to get access to the google drive content of my users.
I can redeem a code on my domain using the google drive user consent url with correct parameters:
https://accounts.google.com/o/oauth2/v2/auth?response_type=code&client_id='+$scope.googledriveApi.client_id+'&scope='+$scope.googledriveApi.scopes+'&redirect_uri='+$scope.googledriveApi.redirect_uri
I am trying to do an angular $http request to the https://www.googleapis.com/oauth2/v4/token endpoint.
The request looks like this:
$http({
method: 'POST',
headers: {"Content-Type" : "application/x-www-form-urlencoded"},
data: $.param({
"code" : $routeParams.code,
"client_id" : $scope.googledriveApi.client_id,
"client_secret" : $scope.googledriveApi.secret,
"redirect_uri" : $scope.googledriveApi.redirect_uri,
"grant_type" : "authorization_code"
}),
url: 'https://www.googleapis.com/oauth2/v4/token'
})
However the response I get from the request is as follows:
{
"error": "invalid_client",
"error_description": "The OAuth client was not found."
}
Does anyone know why this happens? I have tried changing product name and client id name to be the same. I have checked this for spaces. The reason I'm mentioning this is because this seemed to be the case for other people who asked a question for the same error, however my error happens at the $http request.
I am getting back the user consent code and I am trying to exchange for an access token in this request. This is when the error comes in and I am stuck.
Try these:
Under OAuth consent screen, make sure Product name is not the same with project name as stated in this SO thread:
Try to include an authorization header in your URI request:
headers: { 'Authorization': 'bearer ' + accessToken }
The code I am using is:
var frisby = require('frisby');
frisby.create('Get paf data')
.get('https://services.....')
.expectStatus(200)
.expectHeaderContains('content-type', 'application/json')
.toss();
The error I get while running it from CLI using
jasmine-node EndpointTest_spec.js
The error I get is:
Error: Expected 500 to equal 200
Error: Header 'content-type' not present in HTTP response
So do I need to first load my website and call services through my application and then run frisby ?
But then it defeats the purpose of just making a quick check for all the endpoints used in application without running it.
You are calling request with https:// which may be secure server so use
{ strictSSL: false} in your get method .get('https://services.....',{ strictSSL: false}). It will solve your problem.
var frisby = require('frisby');
frisby.create('Get paf data')
.get('https://services.....',{ strictSSL: false})
.expectStatus(200)
.expectHeaderContains('content-type', 'application/json')
.toss();
I'm using $http to post some data to my data base.
Here is the documentation of the database.
I use it on my terminal and it works.
Here's the error message I got from Safari's console:
1)Failed to load resource: Request header field 0 is not allowed by Access-Control-Allow-Headers. (seems to be sensed by the database)
2)XMLHttpRequest cannot load https://beta-api.mongohq.com/mongo/MyDId/myDatabse/collections/myCollection/documents. Request header field 0 is not allowed by Access-Control-Allow-Headers.
Here's my code:
factory.sendUrlTag = function(data){
d = '{"document" : {"url_URL":"53738eef9256a31f4fdf6bf8","tag_Tag":"537375fc9256a31f4fdf6bf3"} }'
return $http({
url: 'https://beta-api.mongohq.com/mongo/MyDId/myDatabse/collections/myCollection/documents',
method: "POST",
data: d,
headers: [
{'Access-Control-Allow-Origin':'*'},
{'Access-Control-Allow-Headers':'Origin, X-Requested-With, Content-Type, Accept'},
{'Content-Type': 'application/json'},
{'Authorization' : 'api-key MyKey'}
]
})
}
return factory;
};
I didn't have " {'Access-Control-Allow-Origin':'*'},
{'Access-Control-Allow-Headers':'Origin, X-Requested-With, Content-Type, Accept'}," before, but I did some research after I got the error and added these. But it's still not working.
I do $http.get() in my app to the same database and it works.
This thing is driving me nuts....
Please help!
Thank you all! :)
Access-Control-Allow-Origin and friends are response headers, not request headers. It wouldn't make sense if Bob was responsible for granting Bob permission to Alice's system.
The server (https://beta-api.mongohq.com/mongo/MyDId/myDatabse/collections/myCollection/documents) has to send them, not the client.
Since you are making a cross-origin POST request, the server also needs to be able to respond to a pre-flight OPTIONS request.
I found some way maybe able to get around the issue:
Use this and here to get around the cross origin origin issue.
And this to get around the localhost
It may work.
Another relative post.