Question HTTP/2 Enabled But Request Protocol HTTP/1.1

[Sunucu Çözümleri]

Hello,
We are server
CentOS 6.9
http2 Enabled
Plesk 17.0.1 Version

But request http/1.1
Screenshot

What I've done

HTTP/2 Support now available for Plesk 12.5!

 

[waseem]

Use this tool to check if http2 is enabled or not.

HTTP/2 Test | A simple HTTP/2.0 test tool

 

[Sunucu Çözümleri]

Use this tool to check if http2 is enabled or not.

HTTP/2 Test | A simple HTTP/2.0 test tool

Yeah, http/2 Enabled. Screenshot

But all request to http/1.1

Thank you.

 

[waseem]

i can see that http2 is not working for your domain,

did you use this command corretly?

/usr/local/psa/bin/http2_pref enable

Are you using NGINX or not?

 

[Sunucu Çözümleri]

i can see that http2 is not working for your domain,

did you use this command corretly?

/usr/local/psa/bin/http2_pref enable

Are you using NGINX or not?

Yes I run, /usr/local/psa/bin/http2_pref enable

Nginx active

http2 not working

 

[Kingsley]

Yeah, http/2 Enabled. Screenshot

But all request to http/1.1

Thank you.

what other version are you looking for?

 

[waseem]

Hi can you check these requirements?

Known Issues and Limitations
openssl 1.0.1 or higher is required to work with modern ciphers necessary for HTTP/2. For several older Operating Systems (such as CentOS-5 and RHEL-5), earlier openssl version is provided by the OS vendor.

HTTP/2 support on such OSes may be unavailable.

It is serverwide option, so there is no way to configure it on per-domain basis.

Also please check KB with troubleshooting materials: #213942145

 

[WebHostingAce]

I think you are all set.

You have to use http2 enable browser to receive http2 requests.

Also you can set file such as jpg,gif,txt server directly by nginx so the nginx will serve the in http2. This setting is in hosting options.

Also please note http2 support request only with SSL enable.

 

[Sunucu Çözümleri]

I think you are all set.

You have to use http2 enable browser to receive http2 requests.

Also you can set file such as jpg,gif,txt server directly by nginx so the nginx will serve the in http2. This setting is in hosting options.

Also please note http2 support request only with SSL enable.

Hi,

Screenshot

openssl s_client -connect example.com:443 -nextprotoneg '' response Screenshot

Nginx Status : Screenshot

OpenSSL Version : Screenshot

/usr/local/psa/admin/conf/templates/custom/domain/nginxDomainVirtualHost.php files content
Screenshot

/usr/local/psa/bin/http2_pref enable run response : Screenshot

/usr/local/psa/admin/conf/panel.ini file content : Screenshot

/usr/local/psa/admin/bin/httpdmng --reconfigure-all

/etc/nginx/conf.d/ssl.conf file content, Screenshot

Not working http2 request

Thank you.

 

[WebHostingAce]

Please dont expect every response to be http2.

Please do a search in log file for http/2 and see if there is any.

 

[Sunucu Çözümleri]

Please dont expect every response to be http2.

Please do a search in log file for http/2 and see if there is any.

I see access_log but all request to http/1.1

 

[WebHostingAce]

Are you looking at the nginx ssl access log? Also they to use different browsers.

You can try the online http2 test metion before than see if its appear as a http2 access in the log file

 

[WebHostingAce]

This test should give you http2 reqest in your log file. I just checked.

HTTP/2 Test Online

Make sure you have installed a SSL certificate for your website

Good luck!

 

[Sunucu Çözümleri]

Are you looking at the nginx ssl access log? Also they to use different browsers.

You can try the online http2 test metion before than see if its appear as a http2 access in the log file

Try http2 test and see log http/2.0 Screenshot

But Screenshot all chrome request to http/1.1

 

[waseem]

his domain is not showing http2 if we open in browser too. i checked it with firefox extension.

kindly remove all data from
Additional nginx directives and try again

 

[WebHostingAce]

It is because CentOS 6.9's Openssl version does not support ALPN so Chrome Browser wont use HTTP2 for the connection