My web client application is setting HTTP POST requests via fetch API.
I see that OPTIONS preflight requests are sent via debugging proxy (Charles Proxy), but they are not displayed in Google Chrome Developer Tools\Network tab.
I don't have any filters setup on the network tab. I remember OPTIONS requests being visible there, but not anymore. How do I bring them back?
You'll need to go to: chrome://flags/#out-of-blink-cors, disable the flag, and restart Chrome.
This is an expected behavior change according to:
https://bugs.chromium.org/p/chromium/issues/detail?id=995740#c1
I originally came across this via:
https://support.google.com/chrome/thread/11089651?hl=en
I noticed the same thing. I get an error in Console:
Access to XMLHttpRequest at 'https://api.somedomain.com' from origin 'http://www.someotherdomain.com' 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.
This started happening for me on the last update of Chrome (to 76). I don't know what I was on previously but I restart my browser often.
Here is the response from HAR
{
"status":0,
"statusText":"",
"httpVersion":"",
"headers":[
],
"cookies":[
],
"content":{
"size":0,
"mimeType":"x-unknown"
},
"redirectURL":"",
"headersSize":-1,
"bodySize":-1,
"_transferSize":0,
"_error":"net::ERR_FAILED"
}
