I used to have a link-checker script that would go through a table of URLs in a database and issue a
request/response to check their server status code and description, and report this info back to me. It wasn't very scalable, and I
am trying to re-write in ASP.NET.After some testing, I am confused as to how to do this with ASP.NET. It would seem that the
HttpWebRequest and HttpWebResponse classes in the System.Net namespace should do the trick, as the latter has StatusCode and
StatusDescription properties.But when I try the code below with test URLs, I don't get the desired results. If I try a known URL,
like my own http://www.epistemelinks.com/, then I get back a statuscode of OK as I should. If I try one that should return 404
error, I still get OK. If I try one that doesn't even resolve as a domain name, then one of the exceptions fires instead (which is
fine).I am using the wrong classes for what I am trying to do? How can I write some simple code to properly check for 200 = OK vs.
404 = Page Not Found vs. 500 = Error and so forth?Thanks,Tom S.  private void Page_Load(object sender, System.EventArgs e){  try 
{    HttpWebRequest objHttpWebRequest = (HttpWebRequest)WebRequest.Create("http://www.epistemelinks.com/nopagehere.aspx");    
HttpWebResponse objHttpWebResponse = (HttpWebResponse)objHttpWebRequest.GetResponse();     string strData =
objHttpWebResponse.StatusCode.ToString() + " ";    strData += objHttpWebResponse.StatusDescription + " ";    strData +=
objHttpWebResponse.LastModified.ToString();    objHttpWebResponse.Close();    Heading.InnerHtml = "ELC Link Checker Tool";   
Intro.InnerHtml = "Your query returned the following report:";    SearchResults.InnerHtml = strData;}  catch(WebException ex)   {   
SearchResults.InnerHtml = "WebException raised: " + ex.Status;   }  catch(Exception ex)  {    SearchResults.InnerHtml = "xception
raised: " + ex.Message;  }}

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MQ0K

Sure he doesn't need a SPELL checker?

----- Original Message -----
From: "Paul Riley" <rilez@t...>
To: "ASP.NET" <aspx@p...>
Sent: Saturday, November 09, 2002 4:58 PM
Subject: [aspx] RE: Trying to create a URL checker in ASP.NET


> Erm.... Excuse me????
>
> -----Original Message-----
> From: Tom_Stone@e... [mailto:Tom_Stone@e...]
> Sent: 09 November 2002 20:44
> To: ASP.NET
> Subject: [aspx] Trying to create a URL checker in ASP.NET
>
> "ëvÃ?!j÷šâ??)ärÅ?â??êìr¸©¶Ã?Z·
>
.â?¢Ã?(¶èºZµ¦åzâ?¡Ã?D»"Â?§Zµ¦Ã?±æ§v+,¹æ«z«ž²Ã?ëzÃ?hžÃ?­¡Ã?^rKaz*ìz»Ã?®Ã?Z¶ë¡Ã?Å¡Â?Ã?^±Ã?â¦Ã?¨
Â?©Ã?­êh®Ã?aÅ Ã?§~â? Ã?rKhâ?¢Ã¢-Ã?«'¶÷«Ã?Ã?â?¢Â¦Ã¥y©Ã?!©­¯(§â??Ã?+{
>
âµè§
#Ã?0µêì¢g­zÃ?bžâ?¢Ã?'~ëu«-¢0¶â?¡h¶¬Ã?+a
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g�Eë)¢{rV¬±ë"ž�^K+-zc^¶v¦z�Zqë!¢é]v�az�ârF¬¶¥j�^®¬J�­º�¨uæ§u+Z¶ëz�+Š�b¢z
k¢â??Ǧ'¬ëpâ?¦Ã©Ã?¶¼­â?¦Ã§(uæÃ?â??Å?0Å Ã?mzÃ?TD»vâ?°Ã­Â?ëmâ?¦Ã§^²*Ã?v·¬º[l!ò-¯&¤žÅ?'QåŠG¦Ã?Å?'â? Ã?iÿÃ
¼0
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> ­8¢"Ã?ò¢w­â?¦Â«]¡ë'µëÃ?ž·¬¢[Ã?jÃ?Â?¢f¢žv¦zÃ?^žâ?°Ã?¡ûayì\zâ?ºb¢{Š·¬Š{-y§pâ? '!Å Ã?âÂ?âšë"ž
> a{
> èž
> %jÃ?±ú+Ã?­!©­¯(§â??Ã? z0q©Ã?Ã?¸­zÃ?&zÃ?¦¦WÅ?¡Ã?­¢šè¥êåÃ?Ã?^rGè¯m4⯳Â?8ö
x�-�§vû9�@®ºjw¡ú¶jyN�¦¸j�¢'j
> ¡§n7¶Ã?uêÃ?Ã?Ë?KžÃ?â??Ã?¯!¶â?¢m¹ë¡¸¶Ã?y´ªç´¶m¹Yz²yâ? Ã¿Ã?²z
â??â?ºÂ¥â?¦jYzžn¶m¦¢»hº{.nÃ?+â?°Â·Â¬zwZnV§â??隊[hâ?¢Ã¦Â¯y«)Ã?^{ë^÷JÂ?©Ã?º1
>
> 쨺Z)*'a º1rÚ? + rzǧujyå?¨^jí¼«í²?v~ 6º1

This is what he meant to ask...


I used to have a link-checker script that would go through a table of 
URLs
in a database and issue a request/response to check their server status 
code
and description, and report this info back to me. It wasn't very 
scalable,
and I am trying to re-write in ASP.NET.After some testing, I am 
confused as
to how to do this with ASP.NET. It would seem that the HttpWebRequest 
and
HttpWebResponse classes in the System.Net namespace should do the 
trick, as
the latter has StatusCode and StatusDescription properties.But when I 
try
the code below with test URLs, I don't get the desired results. If I 
try a
known URL, like my own http://www.epistemelinks.com/, then I get back a
statuscode of OK as I should. If I try one that should return 404 
error, I
still get OK. If I try one that doesn't even resolve as a domain name, 
then
one of the exceptions fires instead (which is fine).I am using the 
wrong
classes for what I am trying to do? How can I write some simple code to
properly check for 200 =3D OK vs. 404 =3D Page Not Found vs. 500 =3D 
Error and so
forth?

Thanks,Tom S.=C2=A0=C2=A0

private void Page_Load(object sender, System.EventArgs e){=C2=A0

try=C2=A0 {
=C2=A0=C2=A0=C2=A0 HttpWebRequest objHttpWebRequest =3D
(HttpWebRequest)WebRequest.Create("http://www.epistemelinks.com/nopagehe
re.a
spx");
 =C2=A0=C2=A0=C2=A0 HttpWebResponse objHttpWebResponse =3D
(HttpWebResponse)objHttpWebRequest.GetResponse();
 =C2=A0=C2=A0=C2=A0 string strData =3D 
objHttpWebResponse.StatusCode.ToString() + " ";
=C2=A0=C2=A0=C2=A0 strData +=3D objHttpWebResponse.StatusDescription + 
" ";
=C2=A0=C2=A0=C2=A0 strData +=3D 
objHttpWebResponse.LastModified.ToString();
=C2=A0=C2=A0=C2=A0 objHttpWebResponse.Close();
=C2=A0=C2=A0=C2=A0 Heading.InnerHtml =3D "ELC Link Checker Tool";
=C2=A0=C2=A0=C2=A0 Intro.InnerHtml =3D "Your query returned the 
following report:";
=C2=A0=C2=A0=C2=A0 SearchResults.InnerHtml =3D strData;
}=C2=A0 catch(WebException ex) =C2=A0 {
=C2=A0=C2=A0=C2=A0 SearchResults.InnerHtml =3D "WebException raised: " 
+ ex.Status; =C2=A0
}=C2=A0 catch(Exception ex)=C2=A0 {
=C2=A0=C2=A0=C2=A0 SearchResults.InnerHtml =3D "xception raised: " + 
ex.Message;=C2=A0
}

}


-----Original Message-----
From: Chris Kersey [mailto:ckersey@m...]
Sent: Saturday, November 09, 2002 8:15 PM
To: ASP.NET
Subject: [aspx] RE: Trying to create a URL checker in ASP.NET


Sure he doesn't need a SPELL checker?

----- Original Message -----
From: "Paul Riley" <rilez@t...>
To: "ASP.NET" <aspx@p...>
Sent: Saturday, November 09, 2002 4:58 PM
Subject: [aspx] RE: Trying to create a URL checker in ASP.NET


> Erm.... Excuse me????
>
> -----Original Message-----
> From: Tom_Stone@e... [mailto:Tom_Stone@e...]
> Sent: 09 November 2002 20:44
> To: ASP.NET
> Subject: [aspx] Trying to create a URL checker in ASP.NET
>
> 
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