Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

ابحث في الدعم

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Firefox does not send If-None-Match header for resources which had an etag in the previous response

  • 2 (ردّان اثنان)
  • 2 have this problem
  • 13 views
  • آخر ردّ كتبه schlm3

schlm3
schlm3
more options

We have webservices which send json data to our webapp. The response headers have ETag-header and Chrome and IE11 correctly use that header (they send the etag in the if-none-match header of the next request). FF however ignores the etag and does not send it with the next request. I have already checked, that the cach in devtools is not deactivated. Thats how my response headers look like:

HTTP/1.1 200 Cache-Control: private X-Frame-Options: SAMEORIGIN X-Content-Type-Options: nosniff X-XSS-Protection: 1; mode=block Set-Cookie: JSESSIONID=0457E5621AE57A9F20350027834D7619; Path=/w3-dev; Secure; HttpOnly ETag: W/"bbb4975d-c81b" Vary: Accept-Encoding Content-Encoding: gzip Content-Type: application/json Content-Length: 1739 Date: Fri, 12 Apr 2019 19:52:46 GMT Server: -

And this is the requestheader from FF for the next request:

Host: bdna03:8443 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0 Accept: application/json Accept-Language: de-CH,de;q=0.8,en-US;q=0.5,en;q=0.3 Accept-Encoding: gzip, deflate, br Referer: https://bdna03:8443/w3-dev/src/demo/index.html Connection: keep-alive Cookie: UID=XYdOZcb....

We have webservices which send json data to our webapp. The response headers have ETag-header and Chrome and IE11 correctly use that header (they send the etag in the if-none-match header of the next request). FF however ignores the etag and does not send it with the next request. I have already checked, that the cach in devtools is not deactivated. Thats how my response headers look like: HTTP/1.1 200 Cache-Control: private X-Frame-Options: SAMEORIGIN X-Content-Type-Options: nosniff X-XSS-Protection: 1; mode=block Set-Cookie: JSESSIONID=0457E5621AE57A9F20350027834D7619; Path=/w3-dev; Secure; HttpOnly ETag: W/"bbb4975d-c81b" Vary: Accept-Encoding Content-Encoding: gzip Content-Type: application/json Content-Length: 1739 Date: Fri, 12 Apr 2019 19:52:46 GMT Server: - And this is the requestheader from FF for the next request: Host: bdna03:8443 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0 Accept: application/json Accept-Language: de-CH,de;q=0.8,en-US;q=0.5,en;q=0.3 Accept-Encoding: gzip, deflate, br Referer: https://bdna03:8443/w3-dev/src/demo/index.html Connection: keep-alive Cookie: UID=XYdOZcb....

All Replies (2)

schlm3
schlm3 صاحب السؤال
more options

A thing which is strange is, that when I try to clean my local cache, it reports, that the cache has "0 Bytes". Seems that FF is not using a cache at all.

schlm3
schlm3 صاحب السؤال
more options

I have now uninstalled FF and reinstalled it. Agreed to "start from scratch". This fixed the caching-problem.

But now, I have another problem. We use an internal CA-Certificate for our internal server TLS-Certificates. This was no problem with the former installation. I was easily able to import that CA into the Certificate store. But with the fresh installed FF 66.0.3, when ever I try to import the CA-Certificate, nothing happens. The Cert-Info Icon remains with an amber warning...