Content negotiation other than accept-encoding in the wild

[ibnesayeed]

Find up to three different "in the wild" examples of content negotiation in dimensions other than Accept-Encoding.

[ghost]

Instagram:

curl -ILs https://instagram.com | grep vary                                              
vary: Accept-Language, Cookie
vary: Cookie, Accept-Language, Accept-Encoding

curl -L -H "Accept-Language: ru;q=0.5" https://www.instagram.com -I -s | grep -i "content-language"
content-language: ru

Amazon

curl -ILs https://www.amazon.com | grep vary                                             
vary: Content-Type,Cookie,Accept-Encoding,X-Amzn-CDN-Cache,X-Amzn-AX-Treatment,User-Agent

Gitlab

curl -ILs https://gitlab.com | grep vary                                                 
vary: Accept-Encoding,Origin

[Neyo-odu]

Spotify:

curl -ILs https://www.spotify.com
...
Vary: X-Forwarded-Proto
...

Home Depot

curl -ILs https://www.homedepot.com
...
Vary: x-device-type
Vary: x-proto
Vary: x-altexp
...

Vimeo:

curl -ILs https://vimeo.com
...
Vary: User-Agent, Accept-Encoding
...

[kritikagarg]

curl -IL https://stackoverflow.com | grep Vary

Vary: Fastly-SSL

---

curl -IL www.wordpress.com/‎ | grep Vary

Vary: Accept-Encoding Vary: Cookie

---

curl -IL https://www.goodreads.com | grep Vary

Vary: User-Agent,Accept-Encoding,X-Amzn-CDN-Cache,X-Amzn-AX-Treatment

[himarshaj]

1. curl -IL https://arxiv.org/ | grep Vary Vary: Cookie,Accept-Encoding,User-Agent
2. curl -IL https://www.odu.edu/ | grep Vary Vary: Host
3. curl -IL https://www.wix.com/ | grep Vary Vary: User-Agent

[ibnesayeed]

@himarshaj we have already covered www.odu.edu in the lecture 7 slides.

[himarshaj]

@ibnesayeed Sorry about that.

2. curl -IL https://www.psu.edu/ | grep Vary Vary: X-PSU-HTTPS, Accept-Encoding

[bwmabe]

curl -ILs  https://commons.wikimedia.org/wiki/Main_Page | grep vary
vary: X-Forwarded-Proto

curl -ILs  https://wikibooks.org | grep vary 
vary: Accept-Encoding,Cookie,Authorization

curl -ILs  https://mozilla.org | grep vary
vary: Accept-Language

[felixvelariusbos]

Gizmodo

curl -sI https://gizmodo.com/ | grep vary
>>> vary: Accept-Encoding, X-Feature-Hash, X-Forwarded-Proto, Cookie, X-GoogleNews-Bot, X-Exp-Id, X-Exp-Variant, Authorization, X-Use-Magma

Viva.Co.Id

curl -sI https://www.viva.co.id/ | grep vary
>>> vary: Accept-Encoding
>>> vary: Accept-Encoding, User-Agent

Cnet

curl -sI https://www.cnet.com/ | grep vary
>>> vary: Accept-Encoding, User-Agent