$ curl https://slack.com/help/articles/212596808-Manage-your-sidebar-display -H "Accept-Language: en-US,en;q=0.9" -v
*   Trying 13.227.61.76...
* TCP_NODELAY set
* Connected to slack.com (13.227.61.76) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
* successfully set certificate verify locations:
*   CAfile: /etc/ssl/cert.pem
  CApath: none
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Client hello (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS change cipher, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-AES128-GCM-SHA256
* ALPN, server accepted to use h2
* Server certificate:
*  subject: C=US; ST=CA; L=San Francisco; O=Slack Technologies, Inc.; CN=slack.com
*  start date: Feb  8 00:00:00 2018 GMT
*  expire date: Feb 12 12:00:00 2021 GMT
*  subjectAltName: host "slack.com" matched cert's "slack.com"
*  issuer: C=US; O=DigiCert Inc; CN=DigiCert SHA2 Secure Server CA
*  SSL certificate verify ok.
* Using HTTP2, server supports multi-use
* Connection state changed (HTTP/2 confirmed)
* Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
* Using Stream ID: 1 (easy handle 0x7fdcb2806600)
> GET /help/articles/212596808-Manage-your-sidebar-display HTTP/2
> Host: slack.com
> User-Agent: curl/7.54.0
> Accept: */*
> Accept-Language: en-US,en;q=0.9
>
* Connection state changed (MAX_CONCURRENT_STREAMS updated)!
< HTTP/2 302
< content-type: text/html
< content-length: 0
< location: https://slack.com/intl/ja-jp/help/articles/212596808-Manage-your-sidebar-display
< date: Mon, 20 Jan 2020 12:02:17 GMT
< server: Apache
< vary: Accept-Encoding
< x-slack-backend: h
< strict-transport-security: max-age=31536000; includeSubDomains; preload
< referrer-policy: no-referrer
< set-cookie: b=ayz55a6qqrave11kdfsed972g; expires=Sun, 20-Jan-2030 12:02:17 GMT; Max-Age=315619200; path=/; domain=.slack.com
< set-cookie: x=ayz55a6qqrave11kdfsed972g.1579521737; expires=Mon, 20-Jan-2020 12:17:17 GMT; Max-Age=900; path=/; domain=.slack.com
< set-cookie: x_f=true; expires=Mon, 20-Jan-2020 12:03:17 GMT; Max-Age=60; path=/; domain=.slack.com
< x-frame-options: SAMEORIGIN
< x-via: haproxy-www-x6wo
< x-cache: Miss from cloudfront
< via: 1.1 2dc176a95360219fefdccced254f387b.cloudfront.net (CloudFront)
< x-amz-cf-pop: NRT20-C4
< x-amz-cf-id: YiHoFHfk55OvWxhnmX46KXmBWXqmqppF-PEdWyrzyfR0VGP--GFHvw==
<
* Connection #0 to host slack.com left intact