HttpGetRequest's with Umlaut inside Query

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edx - 21 Jan 2005 19:55 GMT

Hi,
I am trying to make a WebRequest (Method Get) to a webserver and I need to
transfer an Umlaut (ö) a QueryString. I have tried to encode it "by hand",
but whatever I try does not seem to work, e.g.:

HttpWebRequest ^wr = (HttpWebRequest ^)HttpWebRequest::Create
("http://www.google.com/search?q=L%C3%B6L");
HttpWebResponse ^response = (HttpWebResponse ^)wr->GetResponse ();
StreamReader ^sr = gcnew StreamReader (response->GetResponseStream (),
Encoding::ASCII);
String ^answer = sr->ReadToEnd ();

It should send a request to google.com searching for "LöL" (without the
quotes).
Why doesn't this work? google Interprets the request as L??L

Thank you very much,
Felix Arends

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Gary Chang[MSFT] - 22 Jan 2005 07:37 GMT

Hi Felix,

Currently I am looking for somebody who could help you on it. We will reply
here with more information as soon as possible.
If you have any more concerns on it, please feel free to post here.

Thanks for your understanding!

Best regards,

Gary Chang
Microsoft Community Support
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Joerg Jooss - 22 Jan 2005 10:30 GMT

> Hi,
> I am trying to make a WebRequest (Method Get) to a webserver and I
[quoted text clipped - 11 lines]
> the quotes).
> Why doesn't this work? google Interprets the request as L??L

Note that there's no default character set defined for URL-encoding
non-ASCII characters. You're assuming UTF-8, which actually works with
Google.

You're also decoding the response using ASCII encoding, which loses all
umlaut characters (Google serves ISO-8859-1). I guess you also need to
send a couple of HTTP headers like Accept-Language, because Google
seems to take that into consideration as well.

Cheers,

Signature

http://www.joergjooss.de
mailto:news-reply@joergjooss.de

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edx - 22 Jan 2005 11:37 GMT

Hi!
Thanks for your reply, I managed to do it. It seems that google consider's
the user-agent when processing the search request. So here's my new source
which works for "Umlauts" as well :)

String ^r = String::Format
("http://www.google.com/search?hl=en&q={0}",
s->ToString ());

HttpWebRequest ^wr = (HttpWebRequest ^)HttpWebRequest::Create
(Uri::EscapeUriString (r));
wr->Headers->Add ("Accept-Language:en-us");
wr->Accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,
application/x-shockwave-flash, application/vnd.ms-excel,
application/vnd.ms-powerpoint, application/msword, */*";
wr->Headers->Add ("Accept-Encoding", "deflate");
wr->UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1;
Maxthon; .NET CLR 1.1.4322; .NET CLR 2.0.41115)";

HttpWebResponse ^response = (HttpWebResponse ^)wr->GetResponse ();

Thank you very much,
Felix Arends

> > Hi,
> > I am trying to make a WebRequest (Method Get) to a webserver and I
[quoted text clipped - 22 lines]
>
> Cheers,

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HttpGetRequest's with Umlaut inside Query

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