How could I use Sockets package to get part of HTML file?

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How could I use Sockets package to get part of HTML file?

Posted on 2007-04-26 15:53 By zakyn (

96)

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Hello,

I would like to use Socket package to get informaction from HTML page on Website. COuld you help me please? I need to get the part of HTML file to use it in my procedure.

Thank you very much

Vladimir

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Ask tech support

Comment on 2007-04-29 10:53 from JacquesC ( Maple Rating 4

1697)

Since you have not had an answer here, ask tech support. I am fairly sure I have seen such things done, but it is not so obvious how to put all the tools together (unlike what you can do in Python or Perl, where this is trivial).

HTTP

Comment on 2007-04-30 16:54 from laurent (

30)

Try:

(r, txt) := HTTP[Get]("www.maplesoft.com");

This is in Maple 11, though it's still experimental and thus not documented.

-Laurent

Wonderful

Comment on 2007-04-30 21:29 from JacquesC ( Maple Rating 4

1697)

Quite handy. And for the original poster, a little bit of

interface(verboseproc=3); kernelopts(opaquemodules=false);
print(HTTP[Get]);
print(HTTP[SendRequest]);

gives a nice answer to the original query of how to use Sockets to get the task done.

HTTP works

Comment on 2007-05-01 07:07 from zakyn (

96)

Hello Laurent,

we have met on MARC 2006. Thank you very much, HTTP works. It is very usefull. Is it possible to do that with Socket package?

Thank you.

Vladimir

Is there any limitation in HTTP[Get]?

Comment on 2007-05-01 07:28 from zakyn (

96)

Hello,

I thought, that it works, but if I change URL e.g. to www.maplesoft.cz it does not work. Do you explain me please?

Two examples:

> (r, txt) := HTTP[Get]("www.maplesoft.cz");
r, txt := 200, ""

> (r, txt) := HTTP[Get]("www.vladimirzak.com/maple");

r, txt := 301, "< !DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"\>
<html><head>
<title>301 Moved Permanently</title>
</head><body>
<h1>Moved Permanently</h1>
<p>The document has moved <a href="http://www.vladimirzak.\com/maple/">here</a>.</p>
</body></html>
"

What is wrong? The sites are there.

Thank you very much for your answer.

Vladimir

i think you need to add the

Comment on 2007-05-01 08:32 from Axel Vogt ( Maple Rating 4

948)

i think you need to add the file name (a browser does it automatically
by trying index.htm or index.html)

(r, txt) := HTTP[Get]("http://www.vladimirzak.com/maple/index.html");

not sure what the command would do with the style sheets at your page

Why does maplesoft.com work?

Comment on 2007-05-01 09:27 from zakyn (

96)

Well, www.maplesoft.com works correctly but the other does not work. Why?

Vladimir

hm

Comment on 2007-05-01 09:55 from Axel Vogt ( Maple Rating 4

948)

at least the short docu suggests to use it ...

actually do not know and what would happen if you have 2 files in your root,
one index.htm and one index.htmL and being not quite used with the protocol

but you can try off Maple by opening a DOS prompt and enter various string:

ping http://www.vladimirzak.com/maple
ping http://www.vladimirzak.com

the first does not resolve for a host name, the last does and if i would like
to know the reason, then i would try to read about HTTP

}

How could I use Sockets package to get part of HTML file?

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