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To enable <acronym>HTTP</acronym>2 over plaintext, use <acronym>h2</acronym> <acronym>h2c</acronym> <acronym>http</acronym>/1.1 in the <filename>httpd.conf</filename>.
Context English Persian State
Once the install is complete, there are two methods of obtaining the installed <acronym>PHP</acronym> support modules and the environmental information of the build. The first is to install the full <acronym>PHP</acronym> binary and running the command to gain the information:
<prompt>#</prompt> <userinput>pkg install php74</userinput> <prompt>#</prompt> <userinput>pkg install heimdal</userinput>
<prompt>#</prompt> <userinput>php -i |less</userinput> <prompt>%</prompt> <userinput>top</userinput>
It is necessary to pass the output to a pager, such as the <command>more</command> or <command>less</command> to easier digest the amount of output.
Finally, to make any changes to the global configuration of <acronym>PHP</acronym> there is a well documented file installed into <filename role="directory">/usr/local/etc/php.ini</filename>. At the time of install, this file will not exist because there are two versions to choose from, one is <filename>php.ini-development</filename> and the other is <filename>php.ini-production</filename>. These are starting points to assist administrators in their deployment.
HTTP2 Support
<application>Apache</application> support for the <acronym>HTTP</acronym>2 protocol is included by default when installing the port with <command>pkg</command>. The new version of <acronym>HTTP</acronym> includes many improvements over the previous version, including utilizing a single connection to a website, reducing overall roundtrips of <acronym>TCP</acronym> connections. Also, packet header data is compressed and <acronym>HTTP</acronym>2 requires encryption by default.
When <application>Apache</application> is configured to only use <acronym>HTTP</acronym>2, web browsers will require secure, encrypted <acronym>HTTPS</acronym> connections. When <application>Apache</application> is configured to use both versions, <acronym>HTTP</acronym>1.1 will be considered a fall back option if any issues arise during the connection.
While this change does require administrators to make changes, they are positive and equate to a more secure Internet for everyone. The changes are only required for sites not currently implementing <acronym>SSL</acronym> and <acronym>TLS</acronym>.
This configuration depends on the previous sections, including <acronym>TLS</acronym> support. It is recommended those instructions be followed before continuing with this configuration.
Start the process by enabling the <acronym>http</acronym>2 module by uncommenting the line in <filename>/usr/local/etc/apache24/httpd.conf</filename> and replace the mpm_prefork module with mpm_event as the former does not support <acronym>HTTP</acronym>2.
LoadModule http2_module libexec/apache24/
LoadModule mpm_event_module libexec/apache24/
There is a separate <filename role="port">mod_http2</filename> port that is available. It exists to deliver security and bug fixes quicker than the module installed with the bundled <filename role="port">apache24</filename> port. It is not required for <acronym>HTTP</acronym>2 support but is available. When installed, the <filename></filename> should be used in place of <filename></filename> in the <application>Apache</application> configuration.
There are two methods to implement <acronym>HTTP</acronym>2 in <application>Apache</application>; one way is globally for all sites and each VirtualHost running on the system. To enable <acronym>HTTP</acronym>2 globally, add the following line under the ServerName directive:
Protocols h2 http/1.1
To enable <acronym>HTTP</acronym>2 over plaintext, use <acronym>h2</acronym> <acronym>h2c</acronym> <acronym>http</acronym>/1.1 in the <filename>httpd.conf</filename>.
Having the <acronym>h2c</acronym> here will allow plaintext <acronym>HTTP</acronym>2 data to pass on the system but is not recommended. In addition, using the <acronym>http</acronym>/1.1 here will allow fallback to the <acronym>HTTP</acronym>1.1 version of the protocol should it be needed by the system.
To enable <acronym>HTTP</acronym>2 for individual VirtualHosts, add the same line within the VirtualHost directive in either <filename>httpd.conf</filename> or <filename>httpd-ssl.conf</filename>.
Reload the configuration using the <command>apachectl</command> <parameter>reload</parameter> command and test the configuration either by using either of the following methods after visiting one of the hosted pages:
<prompt>#</prompt> <userinput>grep "HTTP/2.0" /var/log/httpd-access.log</userinput> <prompt>%</prompt> <userinput>top</userinput>
This should return something similar to the following: - - [18/Oct/2020:18:34:36 -0400] "GET / HTTP/2.0" 304 - - - [18/Oct/2020:19:19:57 -0400] "GET / HTTP/2.0" 304 - - - [18/Oct/2020:19:20:52 -0400] "GET / HTTP/2.0" 304 - - - [18/Oct/2020:19:23:10 -0400] "GET / HTTP/2.0" 304 -
The other method is using the web browser's built in site debugger or <command>tcpdump</command>; however, using either method is beyond the scope of this document.
Support for <acronym>HTTP</acronym>2 reverse proxy connections by using the <filename></filename> module. When configuring the ProxyPass or RewriteRules [P] statements, they should use h2:// for the connection.
Dynamic Websites
<primary>web servers</primary> <secondary>dynamic</secondary>
In addition to <application>mod_perl</application> and <application>mod_php</application>, other languages are available for creating dynamic web content. These include <application>Django</application> and <application>Ruby on Rails</application>.
<application>Django</application> is a BSD-licensed framework designed to allow developers to write high performance, elegant web applications quickly. It provides an object-relational mapper so that data types are developed as <application>Python</application> objects. A rich dynamic database-access <acronym>API</acronym> is provided for those objects without the developer ever having to write <acronym>SQL</acronym>. It also provides an extensible template system so that the logic of the application is separated from the <acronym>HTML</acronym> presentation.


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(itstool) path: note/para
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3 months ago
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3 months ago
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books/fa/handbook.po, string 9605