I'm trying to make a GET request from an iPhone app(built on Worklight), to a remote worklight adapter on a remote server.
I have generated the authorization request header using the following
http://remote-url:port/project/authorization/v1/testtoken
However, I keep getting the following cross domain error:
XMLHttpRequest cannot load https://remote-url/project/adapters/call/mq/getAccounts/22. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://myapp-url:port' is therefore not allowed access.
But, when I try do the same GET request using an API tool like Postman, I receive the results no issues on my browser.
First - testtoken is only available from the MobileFirst Studio development environment... you need to take this into consideration.
Second, you're likely using Chrome and Crome disallows CORS by default. Change your browser settings and/or try in a different browser.
Related
Notice: Trying to get property of non-object in /var/www/maps/api/place/DeletePlace.php on line 42
The error means that the application you're testing tries to read some property from something not being an object.
If the behaviour can be reproduced using a real browser it indicates a bug in your application
If it happens only with JMeter and isn't reproducible with the browser you need to cross check the request JMeter sends using View Results Tree listener and the request the browser sends using "Network" tab of your browser developer tools - the requests must be exactly the same (apart from dynamic parameters which need to be correlated)
The most common mistake when it comes to API testing using JMeter is that people forget to add HTTP Header Manager and configure it to send a valid Content-Type header
I'm implementing the Okta signin widget with React Native
I get this:
Failed to load https://dev-827074.oktapreview.com/api/v1/sessions/me: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:3000' is therefore not allowed access.
After trying to login, I get the following:
UnsupportedBrowserError {name: "UNSUPPORTED_BROWSER_ERROR", message: "There was an error sending the request - have you enabled CORS?"}
We've received similar errors from Okta. What we had to do is add the hostname for the server that hosts the webview as a Trusted Origin.
API -> Trusted Origins -> Add Origin
You can add multiple origins, you probably need to add http://localhost:3000.
You may need to add http://localhost:3000/implicit/callback to your app's Login Redirect URI's in the General Settings of your Okta app
The API you have written does not support CORS. CORS or Cross origin resource sharing allows a web app to submit requests to an API belonging to a different domain. This setting should be enabled on the API side.
This is how it works, whenever a request is sent to a different domain, an OPTIONS method is sent to the server. The server responds back with available options for the web app. If the verb is supported, the browser will send the actual request with the appropriate verb or method (For example, GET or POST). If the verb is not supported, you get the above error message.
In short, enable CORS for your API. If it is a Node / Express API it is just a simple cors package you need to add to your project and use.
I've just started using Postman to test an API I am integrating to.
I have the following error that keeps showing up
Invalid CORS request
Note the following:
The API uses Bearer token authentication(OAuth2). I have this
working without a problem.
I do get the bearer token successfully, assign it to an Environment variable and then attempt to use it for the RESTful operations.
The problem is in the subsequent RESTful operation that uses the token.
When I use an old token (through a POST operation), it rightfully
tells me that it is expired and not authorized.
When I then generate a new one and try to run the restful call, it gives me that Invalid CORS request error.
Using cURL, I have no issues. But I am frustrated by Postman.
What I have found so far:
Using postman with Http POST requests - I don't get the part in bold
Just in case anybody else has this same problem, here is how to solve
it. Go to https://www.getpostman.com/docs/capture in your chrome
browser. Click on interceptor extension and then choose add to
chrome. Once it is added there is a new icon top right of both the
browser and postman that looks like a traffic light. In postman click
this and it turns green. Then add a header to every request going to
third light. Every header consists of the header name and a value.
Start typing over the header name and a list of allowed http headers
comes up. Choose "Origin". In the cell for value simply type the
full URL of your server. (Do not forget the 'http://' or 'https://').
What is the expected response to an invalid CORS request? - Best explanation I have seen so far on CORS errors.
The other material speaks about Access-Control-Allow-Method header, preflight requests
... and there is an illustrative Apache Tomcat flowchart of the CORS flow.
Here's the answer you found again:
Just in case anybody else has this same problem, here is how to solve it. Go to https://www.getpostman.com/docs/capture in your chrome browser. Click on interceptor extension and then choose add to chrome. Once it is added there is a new icon top right of both the browser and postman that looks like a traffic light. In postman click this and it turns green.
... With the bit in bold translated:
Then add a header to your request. The header Key should be "Origin" and the header Value should be the full URL of your server (Do not forget the http:// or https://).
Note that Chrome/Postman won't allow you to add a Header with a Key of Origin without the Interceptor plugin.
Also note that at least on my system the Interceptor icon no longer looks like a traffic light.
If your back-end service side code checks for origin of the request (just to avoid CORS attack) you may face this issues when testing your Rest API through postman.
How to Resolve this .?
You need to install a Chrome plugin called Postman Interceptor (https://chrome.google.com/webstore/detail/postman-interceptor/aicmkgpgakddgnaphhhpliifpcfhicfo?hl=en).
After successfully installing this plugin , in you Postman client you can see small icon called Postman Interceptor , you need to toggle it to turn it on.
Now you can add a Request header as below
RequestHeader Key "Origin"
RequestHeader Value "your application base URL"
Check this image
Now you should be able to over come CORS issues you are facing
Cheers !!
Just avoid using browser/chrome postman plugin. Use the desktop application instead!
Seems our server is seeing from a Postman manual HTTP POST that the orgin is invalid b/c its coming from Postman as "chrome-extension://fhbjgbiflinjbdggehcddcbncdddomop"
Not sure why or how to resolve on client/Postman side. Seems our server is correclty rejecting it as is though and issuing a 403.
Value of "Origin" header set in Postman request should be allowed in API backend. For example, using Spring Boot for API should have next:
#Configuration
public class WebConfig implements WebMvcConfigurer {
#Value("${cors.allowedOrigins}")
private String allowedOrigins;
#Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**")
.allowedOrigins(allowedOrigins)
.allowedMethods("*")
.allowedHeaders("*");
}
}
where allowedOrigins is set using application.properties property cors.allowedOrigins having comma separated list of allowed origins, eg:
cors.allowedOrings=http://localhost:8080,http://example.com
and set 'Origin' value in Postman to any url from cors.allowedOrigins
I was getting this error when testing my APIs on the postman. Even after meticulously configuring my cors. So I used Insomnia instead of Postman and it works fine. I guess sometimes postman is the problem as it needs some extra effort.
You can try new version of PostMan. To me it works after upgraded postman version from 5.5.5 to 7.36.5
Whenever I try to add the following endpoint, "http://ws.cdyne.com/phoneverify/phoneverify.asmx", during the Managed API setup process and press the Test button I get an error on the server. ERROR - APIProviderHostObject Error occurred while connecting to backend : "stackOverflow preventing me from showing this link", reason: Connect to ws.cdyne.com:80 timed out
When I try this exact same process on a machine outside of our proxy it works fine. I have gone into the axis2.xml file and added proxy information and even went as far as installing cntlm and setting the proxy to localhost - same error.
I can browse to the above link just fine on this machine.
My environment is Windows 10.
I assume you talk about clicking the Test button when providing Backend Endpoint in API publisher.
The way that Test button works at the moment (as far as I understand) is that it invokes HTTP HEAD method on the endpoint provided (because according to RFC 2616, "This method is often used for testing hypertext links for validity, accessibility, and recent modification.")
Then it checks response. If response is valid or 405 (method not allowed), then the URL is marked as Valid.
Thus sometimes, if backend is not properly following RFC, you might get otherwise working URLs declared as Invalid during the test because of that improper HEAD response evaluation. Obviously, this is just a check for your convenience and you can ignore the check if you know the endpoint works for the methods and resources you need it to work.
So my advice would be to try ignoring the Test and just finishing setting up and publishing the API.
P.S. I am checking it on WSO2 API Cloud but behavior is identical to downloadable API Manager.
Whenever I try to call Magento's rest resources via PHP, I get an HTTP 500 Internal Server Error. My link is, in accordance to Magento's REST API, http://mymagento.com/api/rest/products.
Everything is set up properly and whenever I try to access it via the browser, the response is a page with the XML data I want. Same thing goes for the RESTClient plugin for Firefox.
I also get the internal server error whenever I try to do an authorised request as a customer.
Does anyone know why this is happening? I ran out of ideas an hour ago or so.
If you just got that problem (only) then,
500 errors in the HTTP cycle
Any client (e.g. your Web browser or our CheckUpDown robot) goes through the following cycle when it communicates with the Web server:
Obtain an IP address from the IP name of the site (the site URL
without the leading 'http://'). This lookup (conversion of IP name to
IP address) is provided by domain name servers (DNSs).
Open an IP socket connection to that IP address.
Write an HTTP data stream through that socket.
Receive an HTTP data stream back from the Web server in response.
This data stream contains status codes whose values are determined by
the HTTP protocol. Parse this data stream for status codes and other
useful information.
This error occurs in the final step above when the client receives an HTTP status code that it recognises as '500'. (Last updated: March 2012).
Fixing 500 errors - general
This error can only be resolved by fixes to the Web server software. It is not a client-side problem. It is up to the operators of the Web server site to locate and analyse the logs which should give further information about the error.