1. HTTP və CGI
Adil Əliyev
http://neats.az

2. Məlumat necə ötürülür?

3. Məlumat necə ötürülür?

4. HTTP nə olan şeydir?

5. GET
GET / HTTP/1.1
Connection: Keep­Alive
User­Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.1
(KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1
Accept: text/*, image/jpeg, image/png, image/*, */*
Accept­Encoding: x­gzip, gzip, identity
Accept­Charset: Any, utf­8, *
Accept­Language: en, en_US
Host: www.google.com

6. GET
HTTP/1.1 200 OK
Date: Thu, 24 Jan 2002 17:33:52 GMT
Server: Apache/1.3.14
Last­Modified: Mon, 21 Jan 2002 22:08:33 GMT
Etag: “47bc6­25e0­3c4c9161”
Accept­Ranges: bytes
Content­Length: 9696
Connection: close
Content­Type: text/html
­­ blank line­­
­­ HTML entity ­­

7. POST
POST /path/script.cgi HTTP/1.0
From: frog@jmarshall.com
User­Agent: HTTPTool/1.0
Content­Type: application/x­www­form­urlencoded
Content­Length: 32
page=index&id=15

8. CGI nədir?

9. CGI
http://example.com/toplama.cgi?m=4&n=2
...
HTTP_ACCEPT="text/html,application/xhtml+xml,application/xml;q=0
.9,*/*;q=0.8"
HTTP_ACCEPT_CHARSET="ISO­8859­1,utf­8;q=0.7,*;q=0.7"
HTTP_ACCEPT_ENCODING="gzip, deflate"
HTTP_ACCEPT_LANGUAGE="en­us,en;q=0.5"
HTTP_CONNECTION="keep­alive"
HTTP_HOST="example.com"
HTTP_USER_AGENT="Mozilla/5.0 (Windows NT 6.1; WOW64; rv:5.0)
Gecko/20100101 Firefox/5.0"
...
QUERY_STRING="var1=value1&var2=with%20percent%20encoding"
REMOTE_ADDR="127.0.0.1"
REMOTE_PORT="63555"
REQUEST_METHOD="GET"
REQUEST_URI="/toplama.cgi?m=4&n=2"
...

10. CGI
http://example.com/toplama.cgi?m=4&n=2
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
char *data;
long m,n;
printf("%s%c%cn", "Content­Type:text/html;charset=utf­
8",13,10);
printf("<p>Toplama</p>n");
data = getenv("QUERY_STRING");
sscanf(data,"m=%ld&n=%ld",&m,&n);
printf("<p> %ld + %ld = %ld.",m,n,m*n);
return 0;
}

11. CGI və POST
uses dos;
var
a:string;
c:char;
begin
writeln('Content­Type:text/html',#10#13);
a:='';
while not eof(input) do
begin
read(c);
a:= a+c;
end;
writeln('POST: ',a);
end.

12. İstinadlar
● RFC 2616 (http://tools.ietf.org/html/rfc2616)
● RFC 3875 (http://tools.ietf.org/html/rfc3875)

13. Təşəkkür edirəm!