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Sep 29th, 2006, 9:54 AM
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#1 |
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Hobbyist Programmer
Join Date: Mar 2006
Location: Lebanon
Posts: 148
Rep Power: 3
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Web Client
im trying to extract information from a website..
Ive tested my client on my university's email login page IP is "193.188.129.122" Connection: close\r\n while(flag == true)
{
char * reply = new char[1024];
recv(com->sd,reply,1024,0);
delete [] reply;
}Communication With Server on Socket 1992 Initiated
Sending: GET / HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-
excel, application/vnd.ms-powerpoint, application/msword, application/x-shockwav
e-flash, */*
Accept-Language: en-us
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322
; .NET CLR 2.0.50727)
Host: 192.168.141.107
Connection: Keep-Alive
RECIEVING
HTTP/1.1 200 OK
Date: Fri, 29 Sep 2006 14:23:36 GMT
Server: Apache/1.3.33 Ben-SSL/1.55 (Unix) PHP/4.3.4
X-Powered-By: PHP/4.3.4
Set-Cookie: Horde=5bf5563986bdcf4b05cc5e03ea9c8e82; path=/; domain=192.168.141.1
07
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Keep-Alive: timeout=15, max=100
Connection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: text/html; charset=ISO-8859-1
e16
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-trans
itional.dtd">
<!-- IMP: Copyright 2001, The Horde Project. IMP is under the GPL. -->
<!-- Horde Project: http://horde.org/ | IMP: http://horde.org/imp/ -->
<!-- GNU Public License: http://www.fsf.org/copyleft/gpl.html -->
<html lang="en-US"><head>
<title>Imail :: Welcome to Imail</title>
<link rel="SHORTCUT ICON" href="/imp/graphics/favicon.ico" type="image/x-icon" /
>
<link href="/css.php?app=imp" rel="stylesheet" type="text/css" />
</head>
<bo
.
.
.
more html stuff
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.
.
<BR>
<table>
</tr></table>
</body>
</html>
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Sep 29th, 2006, 1:06 PM
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#2 |
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Hobbyist Programmer
Join Date: Apr 2004
Location: /dev/urandom
Posts: 154
Rep Power: 5
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You are opening a persistent connection.
Connection: Keep-Alive This is most likely due to HTTP/1.1; try using HTTP/1.0.
__________________
"Time is an illusion. Lunchtime doubly so." -the late, great Douglas Adams |
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Oct 1st, 2006, 12:21 AM
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#3 |
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Newbie
Join Date: Oct 2006
Posts: 16
Rep Power: 0
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Look at this page for using recv, should help:
http://www.opengroup.org/onlinepubs/...ions/recv.html Realize that recv returns a value. That value is how many bytes were read. So read until it stops receiving bytes. Remember, it returns negative if there was an error, so handle that too. This operation will block- which means, it will hang your application. This is not so great if your application wants to do other stuff while waiting for this data. To solve, you should put this into a seperate thread (unless your app doesn't do anything until it gets the data- in which case its ok BUT if this is GUI app, use thread or GUI will hang). Also, you shouldn't put the declaration of your pointer inside the loop. Also, you should consider not new/delete over and over in the loop. Instead, write to a buffer and reallocate the size as needed. There is a function called realloc that can help. -- |
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Oct 3rd, 2006, 10:18 AM
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#4 | |
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Hobbyist Programmer
Join Date: Apr 2004
Location: /dev/urandom
Posts: 154
Rep Power: 5
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Quote:
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"Time is an illusion. Lunchtime doubly so." -the late, great Douglas Adams |
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