Cross-Origin Request - "Same origin" blocked on GET request - rest

I'm trying to deploy a SAILS app & a VUE app on heroku with a custom domain. I'm currently facing with something that seems to be a CORS issue, but I do not understand this one.
Problem
When I send a GET request to my backend in stage mode, (with postman or my frontend-app) I get an error message :
"... blocking Cross-Origin Request : the "same origin" policy does not
allow access to the resource located at
https://app-frontend.herokuapp.com/api/v1/account/user-controller
...".
The HTML response is :
Status 503 →Service Unavailable
Cache-Control →no-cache, no-store
Connection →keep-alive
Content-Length →511
Content-Type →text/html; charset=utf-8
Date →Tue, 24 Jul 2018 08:17:13 GMT
Server →Cowboy
And my sails console gives me this info :
Redirecting GET request from 'undefined.' subdomain...
But with POST requests, I don't face to this problem and my route is well defined as it works in dev mode.

Did you try setting csrf: false in the config/security.js? It shouldn't affect GET requests, but the key to your problem might be somewhere there.

Related

spring gateway always returns 301, how to continue processing

This is clarification of the OP
I have a spring gateway that uses eureka server to route requests to registered spring boot eureka clients.
What I am seeing is that every request results in a 301 redirect containing a Location header. It seems that because the request is received on https://my-api.io/payment/payment-intent spring-gateway looks it up based upon these rules:
server.forward-headers-strategy=framework
feign.hystrix.enabled=false
spring.cloud.config.discovery.enabled = true
....
spring.cloud.gateway.routes[11].id=orders-service
spring.cloud.gateway.routes[11].uri=lb://orders-service
spring.cloud.gateway.routes[11].predicates[0]=Path=/payment/**,/order/**
spring.cloud.gateway.routes[11].predicates[1]=Method=GET, POST
spring.cloud.gateway.routes[11].predicates[2]=Header=APIKEY, (.*)
spring.cloud.gateway.routes[11].filters[0]=AuthorizationHeaderFilter
## these next two apparently have no impact
spring.cloud.gateway.routes[11].filters[1]=RewritePath=/(?<segment>.*),/payment/$\{segment},/order/$\{segment}
spring.cloud.gateway.routes[11].filters[2]=RedirectTo=301, lb://orders-service
And then returns the Response Headers:
Server: awselb/2.0
Date: Tue, 24 Jan 2023 17:58:36 GMT
Content-Type: text/html
Content-Length: 134
Connection: keep-alive
Location: https://my-api.io:8081/payment/payment-intent
If I enable "follow redirects" in Postman or curl, then it works fine. But that won't work in a mobile app, so I really need to have spring-gateway just route the call on first pass. I don't know if this is because the routes.uri defines the as coming from the load-balancer (since ports are dynamic and there are likely multiple instances) url so it seems like a different url or what.
I am desperately trying to find a way so that the request is just processed and not bounced back with a 301.
Now that I have context around the issue it turns out the issue was not with Spring Gateway since its just a passthru (after some validation). Thanks to spencergibb I was able to rule out gateway and realize it was a forwarding issue in AWS.

Connect with PayPal - invalid_client Client Authentication failed with sandbox

I am implementing Connect With PayPal on my vuejs application following this documentation, but I keep getting an invalid_client error when I try to get the access token.
I have created the sandbox REST app on my account and I've enabled "Connect With PayPal". I have also set my return url in the app settings. To build the button I used the button builder and specified my client id, return url and set auth end point as "sandbox". I have added the external script in my index.html and the paypal.use() method in my component.
So now I have the connect button on my interface and when I click on it I am redirected to https://www.sandbox.paypal.com/connect/ which is normal. I can login with my two default sandbox accounts, then I am redirected to the return url that I specified in my app settings, with two url parameters : "code" and "scope" as described in the documentation.
However I am stuck at this step where I need to get an access token for the connected user.
I have tried to run this curl request with my client id / secret and the code from the url but as I said before it doesn't work and I am getting this error everytime :
HTTP/1.1 401 Unauthorized
Cache-Control: max-age=0, no-cache, no-store, must-revalidate
Content-Length: 77
Content-Type: application/json
Date: Wed, 08 Jul 2020 22:01:03 GMT
Paypal-Debug-Id: 8abaa5940b688
X-Paypal-Token-Service: IAAS
{
"error":"invalid_client",
"error_description":"Client Authentication failed"
}
I have checked my client id and secret multiple times and I can't understand why this is not working, does anyone have an idea ?
Solution for this type of error is to verify and validate everything is being sent correctly in the request, and properly encoded
curl's -u flag makes username:password header authentication easier
curl's -v flag will give visibility about the actual communication, to validate

301 moved permanently with socket.http

In python (and my browser), I am able to send a request to https://www.devrant.com/api/devrant/rants?app=3&sort=algo&limit=10&skip=0 and get a response, as expected, but with Lua, I get HTTP/1.1 301 Moved Permanently. Here is what I have tried so far:
http = require("socket.http");
print(http.request("https://www.devrant.com/api/devrant/rants?app=3&sort=algo&limit=10&skip=0")
which outputs an HTTP error page (moved permanently) and
301 table: 0x8f32470 http/1.1 301 Moved Permanently
the table's contents are:
location https://www.devrant.com/api/devrant/rants?app=3&sort=algo&limit=10&skip=0
content-type text/html
server nginx/1.10.0 (Ubuntu)
content-length 194
connection close
date Mon, 11 Dec 2017 01:41:35
Why does only Lua get this error? If I request to google, I get the google home page HTML. If I request to status.mojang.com, I get the mojang server statuses in a JSON response string, so the socket is functional for certain.
It's because you are using socket.http to request a page from https URL; since socket.http doesn't handle https, it sends the request to port 80, which gets forwarded to https URL, but socket library doesn't follow that redirect, as it doesn't "know" what to do with https, so it simply reports 301.
You need to install and use luasec and use ssl.https instead of socket.http, which will make it work.

Http request failing with No Access-control-Allow-Origin flask-restful

I am building an api with flask-restful and an ionic/angular mobile app, but requests to the api are failing with the error "XMLHttpRequest cannot load http://localhost:5000/api/v1/auth. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8100' is therefore not allowed access. The response had HTTP status code 400." even after specifying the Access-Control-Allow-Origin header in the Resource response.
class Auth(Resource):
def post(self):
#some code here
return responseObject,200,{'Access-Control-Allow-Origin':'*'}
I have tried different browsers and when i check the network XHR calls the response headers don't show the it.
Content-Length:90
Content-Type:application/json
Date:Thu, 14 Sep 2017 11:46:25 GMT
Server:Werkzeug/0.12.2 Python/2.7.10
Yet when i use postman to send the requests, i see the Access-Control-Allow-Origin header
acccess-control-allow-origin →*
content-length →198
content-type →application/json
date →Thu, 14 Sep 2017 12:54:52 GMT
server →Werkzeug/0.12.2 Python/2.7.10
Anyone with an idea of what is happening, i will be glad to receive your help.
thanks in advance.
I think that you have to allow cross origin calls in your API. Have a look here : http://flask-cors.readthedocs.io/en/latest/

Uber API issue with CORS

First time asking a question here. I'm a beginner at this, but i'm truly stumped at the problem i'm facing.
Browsers in use:
Safari and Firefox (both on Mac OS Sierra)
Firefox (Linux - Ubuntu 16.04.2)
I am registered as an Uber Developer and have registered an App in the Dashboard. I'm only using the Server Token for authentication at the moment. In the Dashboard, I have set the following entries in the "Authorizations" tab of the App for CORS (Optional URI for CORS Support):
http://localhost:8000 <-- web server in my PC
https://subdomain.mydomain.com <--- remote web server
A few months ago i created a web app using HTML, CSS and JS (with Jquery v2.2.4) to play around with the Ride Estimates API and was able to get it to report data for many locations in my area successfully. Somehow it no longer works. I'm trying to fix that and improve the functionality. However, i just can't get past the initial query to the API because of CORS issues that were not existent before.
My API URL is:
https://api.uber.com/v1/estimates/price?start_latitude=8.969145&start_longitude=-79.5177675&end_latitude=8.984104&end_longitude=-79.517467&server_token={*********SERVER*TOKEN**********}
When i paste that in the address bar of the browser i get valid JSON:
{"prices":[{"localized_display_name":"uberX","distance":1.58,"display_name":"uberX","product_id":"811c3224-5554-4d29-98ae-c4366882011f","high_estimate":3,"surge_multiplier":1.0,"minimum":2,"low_estimate":2,"duration":420,"estimate":"2-3\u00a0$","currency_code":"USD"},{"localized_display_name":"X English","distance":1.58,"display_name":"X English","product_id":"8fe2c122-a4f0-43cc-97e0-ca5ef8b57fbc","high_estimate":4,"surge_multiplier":1.0,"minimum":3,"low_estimate":3,"duration":420,"estimate":"3-4\u00a0$","currency_code":"USD"},{"localized_display_name":"uberXL","distance":1.58,"display_name":"uberXL","product_id":"eb454d82-dcef-4d56-97ca-04cb11844ff2","high_estimate":4,"surge_multiplier":1.0,"minimum":3,"low_estimate":3,"duration":420,"estimate":"3-4\u00a0$","currency_code":"USD"},{"localized_display_name":"Uber Black","distance":1.58,"display_name":"Uber Black","product_id":"ba49000c-3b04-4f54-8d50-f7ae0e20e867","high_estimate":6,"surge_multiplier":1.0,"minimum":4,"low_estimate":4,"duration":420,"estimate":"4-6\u00a0$","currency_code":"USD"},{"localized_display_name":"Uber SUV","distance":1.58,"display_name":"Uber SUV","product_id":"65aaf0c2-655a-437d-bf72-5d935cf95ec9","high_estimate":7,"surge_multiplier":1.0,"minimum":5,"low_estimate":5,"duration":420,"estimate":"5-7\u00a0$","currency_code":"USD"}]}
I then proceed to set up JS (w/ JQuery) code in webpage...
var url = "https://api.uber.com/v1/estimates/price?start_latitude=8.969145&start_longitude=-79.5177675&end_latitude=8.984104&end_longitude=-79.517467&server_token={*********SERVER*TOKEN**********}";
$.getJSON(url, function(result){
console.log(result);
});
Uploading the HTML and JS to my remote web server and then loading the webpage in any of my browsers yields a 200 status from Uber API. However, the console log shows CORS blocking my request (PROBLEM #1):
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://api.uber.com/v1/estimates/price?start_latitude=8.969145&start_longitude=-79.5177675&end_latitude=8.984104&end_longitude=-79.517467&server_token={*********SERVER*TOKEN**********}. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).
Then, in the Inspector view of both Mac Browsers, under the Network / Resources areas, i see the 200 Status message from the GET request. However, along with the Response message (PROBLEM #2):
SyntaxError: JSON.parse: unexpected end of data at line 1 column 1 of the JSON data
The Request Headers are:
GET /v1/estimates/price?start_latitude=8.969145&start_longitude=-79.5177675&end_latitude=8.984104&end_longitude=-79.517467&server_token={*********SERVER*TOKEN**********} HTTP/1.1
Host: api.uber.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0) Gecko/20100101 Firefox/52.0
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br
Referer: https://subdomain.domain.com/Uber/index.html
Origin: https://subdomain.domain.com
Connection: keep-alive
The Response Headers are:
HTTP/1.1 200 OK
Server: nginx
Date: Sun, 19 Mar 2017 22:26:31 GMT
Content-Type: application/json
Transfer-Encoding: chunked
Connection: keep-alive
Content-Geo-System: wgs-84
Content-Language: en
X-Rate-Limit-Limit: 2000
X-Rate-Limit-Remaining: 1998
X-Rate-Limit-Reset: 1489964400
X-Uber-App: uberex-nonsandbox, optimus, migrator-uberex-optimus
Strict-Transport-Security: max-age=604800
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
Content-Encoding: gzip
In Firefox for Linux i sometimes don't get the Syntax Error; i always seem to get it on the Mac Browsers. In Linux, when i do get that error, then clicking on the "Edit and Resend" Headers button (resending the Headers but without really editing the Headers), the Syntax Error disappears and the Response text actually shows the Uber API Object that is supposed to be there... but i still get the CORS Blocked message on the Console Log. I really don't understand why this is, but it seems contradictory. In the end, i am unable to get to use the API data that, using the same method months ago, i could get for several dozens of locations.
I have looked for answers in similar questions but so far have found none that apply to my case. Any help will be greatly appreciated. Getting really frustrated... really stuck here.
This issue was caused by the API not including the header correctly. This issue is resolved and the api is now working as expected. Also, the allow origin header will only be returned in a response if an origin is specified in the request.