() . , . HTTP, HTML-.
HTTP-
HTTP – HTML- . 1990 .
HTTP- – , . . , (, , , . .). , (Apache, Nginx, LiteSpeed . .). .
, google.com, . HTTP- :
| google.com |
| Google Chrome HTML- |
HTTP | |
:
| , |
| Apache 27.05.2017 UTF-8 |
| (, ) |
HTML- .
HTTPS
HTTP- HTTPS-. . SSL- . , .
( ). , HTTP-. RSA. (, . .).
HTTP-
HTTP- . – Date, Cookie, Host, Server . . HTTP- . -.
HTTP- :
- Firebug.
- Live HTTP Headers.
- HTTP headers.
- :
- Bertal.ru.
- stupid.su.
- Speed-Tester.Info.
. 100–200 , - . , online .
HTTP- :
- (General headers) – ;
- (Request headers) – ;
- (Response headers) – ;
- (Entity headers) – .
, . , . . :
| | |
POST | /c840024/upload.php | HTTP/1.1 |
Host URL- . . :
- GET – ( ).
- POST – ( ).
- HEAD – , GET, .
- PUT – URL;
– User Agent, Cookie . . HTTP. 1.0 .
, , . :
( ) HTTP- Host, Referer, User Agent Accept.
, . .
HTTP- –
, . php HTTP- header(). , :
header('Location: http://www.site.com/').
. :
. .
, , ( HTML-). . .
Last-Modified. , . , . :
: " 16.05.2016, ?"
: ", 19.03.2017, ."
.
, .
http- .
header().
, . , . .
, header(«http/1.1 200 Ok»).
, . . . , .
, , . , . , .
, HTTP . , , . , .
SEO- HTTP. Last-Modified. , - . Expires. Cache-Control, .
. Yandex Google . - . , , .
Last-Modified , , - . , . .
URL-
URL- . , . :
HTTP, PHP . . . SQL- .
URL – . - . , . SEO- URL .