windows forms programming with c chapter 1
Web Client Programming with Perl-Chapter 3: Learning HTTP- P3
Ngày tải lên :
17/10/2013, 19:15
... Accept Specifies media formats that the client can accept
Accept-Charset
Tells the server the types of character sets that the client
can handle
Accept-Encoding
Specifies the encoding schemes ... SCHEME REALM
Accept: image/gif
Accept: image/x-xbitmap
Accept: image/jpeg
Authorization: BASIC d2VibWFzdGVyOnpycW1hNHY=
The server checks the authorization, and upon successful authentication, ... dynamic documents (e.g., created on the
fly by a CGI script). Under HTTP 1. 0, the Pragma header was used with
the value no-cache to tell caching proxies and clients not to cache the
document....
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Web Client Programming with Perl-Chapter 4: The Socket Library- P1
Ngày tải lên :
20/10/2013, 10:15
... telnet to connect to port 13 :
(intense) /homes/apm> telnet localhost 13
Trying 12 7.0.0 .1
Connected to localhost.
Escape character is '^'.
Tue Jun 14 00:03 :12 19 96
Connection closed ...
end the connection.
Figure 4 -1 shows the flow of a sockets transaction.
Figure 4 -1. Socket calls
Using the Socket Calls
Accepting a Connection
The accept( ) function waits for an incoming ... connection associated with
that socket on a specified remote host and port.
The server uses the accept( ) call to intercept the incoming connection and
initiate communication with the client....
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Web Client Programming with Perl-Chapter 4: The Socket Library- P2
Ngày tải lên :
20/10/2013, 10:15
... #!/bin/ksh
echo "PUT /~apm/hi.txt HTTP /1. 0
User-Agent: shcat /1. 0
Accept: */*
Content-type: text/plain
Content-length: 2
hi" | shcat http://publish.ora.com/
Grep out URL References
When ... "User-Agent: hcat /1. 0\n\n";
Replace it with this:
# copy STDIN to network connection
while (<STDIN>) {print F;}
and save it as shcat. Now you can say whatever you want on shcat's ... HTML, may cause your
current client to interpret important values incorrectly. Changes in
data may be unpredictable. When your client doesn't understand the
data, it is safer for the client...
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Web Client Programming with Perl-Chapter 5: The LWP Library- P1
Ngày tải lên :
24/10/2013, 08:15
... URLs, such as escaping or
expanding.
Chapter 5: The LWP Library- P1
As we showed in Chapter 1, the Web works over TCP/IP, in which the client
and server establish a connection and then exchange ...
$ua->proxy( (@scheme | $scheme), $proxy_url)
Defines a URL to use with the specified schemes. The first parameter
can be an array of scheme names or a scalar that defines a single
scheme. The second ... functions to classify response codes into the
categories of informational, successful, redirection, error, client error, or
server error. It also exports symbolic aliases of HTTP response codes;...
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Web Client Programming with Perl-Chapter 5: The LWP Library- P2
Ngày tải lên :
24/10/2013, 08:15
... invoked
without a second parameter, uri_escape( ) escapes characters specified
by RFC 17 38. Otherwise, one can pass in a regular expression (in the
context of [ ]) of characters to escape as ... method, like GET or
HEAD.
3. Which is January 1, 19 70, UTC on UNIX systems.
4. Since HTML syntax trees use circular references, the Perl garbage
collector does not currently dispose of the memory ... HTTP response code with HTTP::Response->is_success( )
by calling the is_success( ) method from the $response object. If the request
was successful, we use HTTP::Response::content( ) by invoking...
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Database Programming with C#
Ngày tải lên :
27/10/2013, 07:15
... SqlCommand cmmUser;
12 SqlDataAdapter dadUser;
13 DataSet dstUser;
14
15 SqlCommand cmmUserSelect;
16 SqlCommand cmmUserDelete;
17 SqlCommand cmmUserInsert;
18 SqlCommand cmmUserUpdate;
19
20 SqlParameter ... dadUser;
13 DataSet dstUser;
14
15 SqlCommand cmmUserSelect;
16 SqlCommand cmmUserDelete;
17 SqlCommand cmmUserInsert;
18 SqlCommand cmmUserUpdate;
19
20 SqlParameter prmSQLDelete, prmSQLUpdate;
21
22 ... Id=@Id”;
9
10 SqlConnection cnnUserMan;
11 SqlCommand cmmUser;
403
Chapter 6: Using Stored Procedures, Views, and Triggers
Figure 6 -11 . The viwUser view
10 4ch06.qxp 3 /13 /02 3:58 PM Page 403
12 SqlDataAdapter...
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Web Client Programming with Perl-Chapter 6: Example LWP Programs-P1
Ngày tải lên :
28/10/2013, 15:15
... 010 0.gif at 1 a.m., 0200.gif
at 2 a.m, etc. A periodic client might check some data and perform
action when a condition is met. In this section, we present a program
that periodically checks ...
$opt _c )) {
print_help( );
exit(0);
}
#
my $tracker = new FedEx $cgi, $opt_e, $opt_ p;
my $keep_checking = 1;
First, we declare local variables, call all necessary modules, get command-
line ... FedEx package, let's
take a look at the complete example. Note how one creates a FedEx object
and calls it. We'll come back to this example and redo it as a graphical client
in Chapter...
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Web Client Programming with Perl-Chapter 6: Example LWP Programs-P2
Ngày tải lên :
28/10/2013, 15:15
... we keep track of which documents don't exist,
what their content types are, which ones are local to the web server, which
are not local, and which are not HTTP-based. After scan( ) finishes, ... associate any URL that has been visited with a
value of 1. There are other useful variables that are also used, to track which
document points to what, the content-type of the document, which ... information is available from CheckSite's public interface. The bad( )
method returns an associative array of any URLs that encountered errors.
Within the associative array, one uses the...
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Web Client Programming with Perl-Chapter 7: Graphical Examples with Perl/Tk- P1
Ngày tải lên :
07/11/2013, 09:15
... in order. Now we can use
another function called traverse(), which operates on this data structure and
lets us specify what function to call for each piece of information it contains.
Keeping ... in Chapter 5, The LWP Library, the HTML package
contains a function called parse_html(), which takes a string containing
HTML as its argument, and returns a pointer to a data structure with ... run it, it would look like Figure 7 -1.
Chapter 7: Graphical Examples with Perl/Tk- P1
The Tk extension to Perl can be used to create a Graphical User Interface
(GUI) to your Perl programs on...
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Web Client Programming with Perl-Chapter 7: Graphical Examples with Perl/Tk- P2
Ngày tải lên :
07/11/2013, 09:15
... "CHINA", "COLOMBIA", "CONGO", "COOK ISLANDS",
"COSTA RICA",
"COTE D'IVOIRE", "CROATIA", "CYPRUS", "CZECH ...
REPUBLIC", "DENMARK",
Chapter 7: Graphical Examples with Perl/Tk- P2
The do_search( ) function will take an optional $url argument, to give it an
alternative place to connect ... If we succeed, then we want to
get the actual document out and parse it. $html will contain the HTML tree
object. We reconfigure the text object to "normal" so that we can place text...
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Web Client Programming with Perl-Chapter 7: Graphical Examples with Perl/Tk- P3
Ngày tải lên :
07/11/2013, 09:15
... Package tracking client
Chapter 7: Graphical Examples with Perl/Tk- P3
Our destinations list is an almost exact copy of the list you'd see on the web
page. For ease in using, we placed ... 'top_left_arrow');
-yscrollcommand => ['set',
$scroll],
-exportselection => 0);
$scroll->configure(-command => ['yview',
$listbox]);
$scroll->pack(-side => ...
The rest of the code is repeated from Chapter 6:
## Package FedEx Written by Clinton Wong
package FedEx;
use HTTP::Request;
use HTTP::Response;
elsif ($response->content =~ /Delivery...
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Tài liệu Web Client Programming with Perl-Chapter 7: Graphical Examples with Perl/Tk- P4 docx
Ngày tải lên :
14/12/2013, 13:15
...
selected.
my $site = "";
my ($content, @down);
my @selected = $list->curselection;
$mw->configure(-cursor => 'watch');
$mw->idletasks;
foreach $index ... actually ping
each site.
The code to check a site's status is as follows, where $site is a string
containing a standard URL (like http://www.ora.com):
$content = head($site);
if ($content) ... $history_label->configure(-background =>
$old_color);
}
}
The function ping_site( ) is called when a new site is added to update its
status. It is also called when in automode. It checks the...
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Tài liệu Programming with C# pdf
Ngày tải lên :
21/12/2013, 06:16
... Introduction
9:30 10 :00 Module 1: Overview of the Microsoft .NET Platform
10 :00 10 :15 Break
10 :15 11 :15 Module 2: Overview of C#
11 :15 12 :15 Lab 2 .1: Creating a Simple C# Program
12 :15 1: 15 ... (continued)
10 :30 10 :45 Break
10 :45 11 :15 Lab 12 .2: Defining and Using Events
11 :15 11 :45 Module 13 : Properties and Indexers
11 :45 12 :15 Lab 13 .1: Using Properties and Indexers
12 :15 1: 15 ... (continued)
10 :30 10 :45 Break
10 :45 12 :00 Lab 10 .1: Using Inheritance to Implement an Interface
12 :00 1: 00 Lunch
1: 00 1: 45 Module 11 : Aggregation, Namespaces, and Advanced Scope
1: 45 2 :15 Lab 11 .1: ...
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Tài liệu Web Client Programming with Perl-Chapter 2: Demystifying the Browser-P1 pdf
Ngày tải lên :
26/01/2014, 07:20
... server responds with:
HTTP /1. 0 200 OK
Date: Fri, 04 Oct 19 96 14 :32: 01 GMT
Server: Apache /1. 1 .1
Content-type: image/gif
Content-length: 9487
Last-modified: Tue, 31 Oct 19 95 00:03 :15 GMT
[data ...
associated with "/" and returns it to the browser, preceding it with some
"header information":
HTTP /1. 0 200 OK
Date: Fri, 04 Oct 19 96 14 : 31: 51 GMT
Server: Apache /1. 1 .1
Content-type: ... server responds with:
HTTP /1. 0 200 OK
Date: Fri, 04 Oct 19 96 14 :32 :14 GMT
Server: Apache /1. 1 .1
Content-type: text/html
Content-length: 4 31
Last-modified: Thu, 03 Oct 19 96 08:39:45 GMT
[HTML...
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Tài liệu Web Client Programming with Perl-Chapter 2: Demystifying the Browser-P2 doc
Ngày tải lên :
26/01/2014, 07:20
... then responds with:
HTTP /1. 0 2 01 Created
Date: Fri, 04 Oct 19 96 14 : 31: 51 GMT
Server: HypotheticalPublish /1. 0
Content-type: text/html
Content-length: 30
<h1>The file was created.</h2> ... hypothetical.ora.com
Accept: image/gif, image/x-xbitmap, image/jpeg,
image/pjpeg, */*
The server responds with:
HTTP /1. 0 200 OK
Date: Fri, 04 Oct 19 96 14 :33:43 GMT
Server: Apache /1. 1 .1
Content-type: ... the CGI program. The CGI program then returns some data, and the
server passes it back to the client as follows:
HTTP /1. 0 200 OK
Date: Tue, 01 Oct 19 96 14 :52:06 GMT
Server: Apache /1. 1 .1
Content-type:...
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