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How come some websites can be accessed by IP Addresses and some cannot e.g. Google is accessible through --> http://74.125.19.99/[^] but msn isn't --> http://207.68.173.76/[^] need help because currently working on a DNS Resolver a component for Distributed Web crawler to save those expensive round trips.
Thanx in advance !
AliAmjad(MCP)
First make it Run THEN make it Run Fast!
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When a page is requested, the domain name is resolved into the IP number so that the request is sent to the correct server. The server then locates the web site that is configured to listen to that IP number and to that domain name. A web site can be configures to respond to an IP only without the need of a domain name.
Experience is the sum of all the mistakes you have done.
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But when the IP address of the Server is correct and sent along with the path where the page is located then why it is not displaying the correct page. How can i handle such a situation because I've to resolve each discovered URL and if the resolver failed to get the correct information then I've to issue the request with the unresolved address which not only consumes the bandwidth but also effects the performance of the crawler. Thanks for your helps man !!!
AliAmjad(MCP)
First make it Run THEN make it Run Fast!
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AliAmjad wrote: But when the IP address of the Server is correct and sent along with the path where the page is located then why it is not displaying the correct page.
Because there can be several web sites that respond to the same IP, and they differ only by the domain name.
Experience is the sum of all the mistakes you have done.
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Then what should be the correct approach to access the right thing any article here or anywhere that can help me to solve this issue ???
AliAmjad(MCP)
First make it Run THEN make it Run Fast!
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What are you trying to do, really? Why are you "resolving" the URLs? What's wrong with the URL as it is?
Experience is the sum of all the mistakes you have done.
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As i told you earlier that I am working on a Distributed Web Crawler and a web crawler must use the Domain Name Service (DNS) to map the
web server’s host name into an IP address because if i have discovered say 50 urls from a site e.g. http://www.example.com/ then every request issued to each URL will require a DNS lookup to resolve that domain name which is an overhead a performance reduction or leak etc. what you say !!!
AliAmjad(MCP)
First make it Run THEN make it Run Fast!
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Well, there's not much that you can do. A domain name is not the same as an IP. Sometimes you can use the IP instead of the domain name, sometimes not, and only the server knows.
DNS services are usually cached, so a repeated DNS lookup will usually only go outside the local computer the first time. Have you actually determined that the DNS lookups is even a peformance problem?
Experience is the sum of all the mistakes you have done.
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Yes indeed and I've also read many research paper on this technology and Altavista's Marcator also has this component and their research also shows a significant performance improvement by implementing this very component.
Guffa wrote: DNS services are usually cached, so a repeated DNS lookup will usually only go outside the local computer the first time.
Can you please tell me or explain it a bit !
Thanks for your help man !!
AliAmjad(MCP)
First make it Run THEN make it Run Fast!
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AliAmjad wrote: Yes indeed and I've also read many research paper on this technology and Altavista's Marcator also has this component and their research also shows a significant performance improvement by implementing this very component.
Well, to get that to work you have to send the request differently. You can send the request directly to the IP, but it has to contain the "unresolved" URL.
AliAmjad wrote: Can you please tell me or explain it a bit !
DNS in Windows XP[^]
Configuring the DNS Resolver Cache in Windows XP[^]
Adjust Windows XP DNS Cache Settings[^]
Experience is the sum of all the mistakes you have done.
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Thanks a million man for your help !!!!
AliAmjad(MCP)
First make it Run THEN make it Run Fast!
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A single IP can also cater to multiple websites (domains), in the case of shared hosting. Isn't it?
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can any body help me in updation of rows in asp with vbscript
">
<%If IsEmpty(vopenflg) or vopenflg = 0 Then%>
Normal
Abuse
clsoe
<%Elseif vopenflg =1 Then%>
Normal
Abuse
clsoe
<%Elseif vopenflg =2 Then%>
Normal
Abuse
clsoe
<%End If%>
<% R.close
If Not IsEmpty(Request.Form("submit")) then
vopenflg = Request.Form("vopenflg")
vopenflg=trim(vopenflg)
conn.close
conn.Mode = adModeReadWrite
conn.open
R.open "select top_id,open_flg from topmaster ",conn, adOpenStatic, adLockOptimistic, adCmdText
if request.QueryString("vopenflg"& R("top_id"))<>"" then
R("open_flg")=vopenflg
R.update
R.Close
conn.close
end if
end if
end if
%>
sanjeev
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idsanjeevjha wrote: can any body help me in updation of rows in asp with vbscript
Could you be a bit more specific in what you actually need help with?
">
You don't want a space in the name.
Experience is the sum of all the mistakes you have done.
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hi i wants to display some rows on page and some in these wants to modify then how is possible i am using this code and wants to help in thats.
[code]
">
Normal
Abuse
clsoe
If Not IsEmpty(Request.Form("submit")) then
vopenflg = Request.Form("vopenflg")
vopenflg=trim(vopenflg)
conn.close
conn.Mode = adModeReadWrite
conn.open
<% R.open "select top_id,open_flg from topmaster ",conn, adOpenStatic, adLockOptimistic, adCmdText
if request("vopenflg"&R("top_id"))<>"" then
R("open_flg")=vopenflg
R.update
R.Close
conn.close
end if
end if
end if%>
[/code]
sanjeev
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idsanjeevjha wrote: vopenflg = Request.Form("vopenflg")
Do you have a field named "vopenflg"?
conn.close
You forgot to close the recordset before closing the connection. Why are you closing the connection at all?
conn.Mode = adModeReadWrite
conn.open
Do you really have to change the mode? Have you set a different mode before opening the connection the first time? I don't think that I have ever seen anything used but the default mode for the connection. What database are you using?
R.open "select top_id,open_flg from topmaster ",conn, adOpenStatic, adLockOptimistic, adCmdText
You should do the update before you loop out the rows. Closing and reopening the recordset in the middle of the loop really messes up things.
You have to specify what record you want to update, otherwise you will be updating the record that happens to be first in the result.
if request("vopenflg"&R("top_id"))<>"" then
Don't use the Request collection. Specify if the data comes from Request.Cookies, Request.ServerVariables, Request.Form or Request.QueryString.
As you have reopened the recordset, R("top_id") no longer contains the same id as you used in the select element above. You will be reading from the select element in the row that matches the record that happens to be first in the recordset. You will be using the correct data for the update, but you are not updating the record that you think that you are.
Experience is the sum of all the mistakes you have done.
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hi
i am making a link that display its detail on click on link of field display its information which is stored after display i wants to modify status of open_flg thats row is display i am using oracle database
lets plz understand my code i am just change my code like this
[code]
<%@language=vbscript%>
<%option explicit%>
<%
If Request.Cookies("userid") = "" Then
Response.Redirect "login.asp"
Else
dim my_conn_stRing, conn,R,R1,R2, sql,Rcount,Rpage,page,i,vopenflg
dim stroutput,reply,repcount,stropt1,vtopid
MY_CONN_STRING = "dsn=oracle;uid=starter;pwd=starter;"
Set Conn = server.createobject("ADODB.Connection")
Conn.open MY_CONN_STRING
conn.mode=admodereadwrite
set R = Server.CreateObject("ADODB.Recordset")
for each stropt1 in request.QueryString
vtopid=request.QueryString(stropt1)
R.open "Select top_id,top_sub,MSG,open_flg,launch_by,launch_dt from topmaster where top_id="&vtopid&" order by top_id desc ",conn, adOpenStatic, adLockOptimistic, adCmdText
%>
<title>Vioce Of Baraunians
| TOPIC ID | TOPIC SUBJECT | MESSAGE | POSTED BY | POSTED DATE | Permission | | <%=R("top_id")%> | <%Response.Write R("top_sub")%> | <%=R("msg")%> | <%=R("launch_by")%> | <%=R("launch_dt")%> | Apply
Normal
Abuse
clsoe
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| Voice of Baraunians views | <%Response.write(Application("visitors"))%> |
<%
If Not IsEmpty(Request.Form("submit")) then
vopenflg = Request.Form("vopenflg")
vopenflg=trim(vopenflg)
R("open_flg")=vopenflg
R.update
R.Close
conn.close
end if
next
end if
%>
function moderate()
{
window.location = "moderator1.asp"
}
[/code]
sanjeev
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It would be much easier to understand what you are trying to say if you would separate what you write into sentences.
Is there any problem with the code? What happens when you use it? Do you get any error message?
You are only closing the recordset and the connection inside the if statement where you update the record, so the first time the page is displayed it leaks a connection.
Experience is the sum of all the mistakes you have done.
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i am not getting any error but no updation so plz guide me updation where is the problems plz where i have to change the code and whats.Thanks
sanjeev
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The code looks like it shold work (at least good enough to make an update). How do you check if the record has been updated or not?
Experience is the sum of all the mistakes you have done.
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when record is updated its redirect to to first page thats moderat.asp
but problems is no any updation done
sanjeev
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idsanjeevjha wrote: when record is updated its redirect to to first page thats moderat.asp
but problems is no any updation done
That doesn't make sense. The code doesn't do any redirect, and it doesn't show the updated value anywhere on the page so that you can see if it's updated or not.
If you did show the value, you would not see the change, as you display the values before the code that updates the values. You would have to update the page another time to see the change.
Experience is the sum of all the mistakes you have done.
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my problems is to update thats row which display after click on link so click on link it display its row detail and wants select a option from option list and modify its open_flg status so plz help in updation
[code]
<%@language=vbscript%>
<%option explicit%>
<%
If Request.Cookies("userid") = "" Then
Response.Redirect "login.asp"
Else
dim my_conn_stRing, conn,R,R1,R2, sql,Rcount,Rpage,page,i,vopenflg
dim stroutput,reply,repcount,stropt1,vtopid,detail
MY_CONN_STRING = "dsn=oracle;uid=starter;pwd=starter;"
Set Conn = server.createobject("ADODB.Connection")
Conn.open MY_CONN_STRING
set R = Server.CreateObject("ADODB.Recordset")
for each stropt1 in request.QueryString
vtopid = request.QueryString(stropt1)
R.open "Select top_id,top_sub,MSG,open_flg,launch_by,launch_dt from topmaster where top_id="&vtopid&"",conn, adOpenStatic, adLockOptimistic, adCmdText
%>
<title>Vioce Of Baraunians
<% if request.Form("submit") then
dim sqlstr
sqlstr = "update topmaster set open_flg = '"&trim(Request.Form("vopenflg"))&"' where top_id = " & vtopid
response.Write(vopenflg)
conn.execute sqlstr
R.close
response.redirect("moderator1.asp")
conn.close
set conn=nothing
end if
next
%>
| TOPIC ID | TOPIC SUBJECT | MESSAGE | POSTED BY | POSTED DATE | Permission | | <%=R("top_id")%> | <%Response.Write R("top_sub")%> | <%=R("msg")%> | <%=R("launch_by")%> | <%=R("launch_dt")%> | Apply
Normal
Absue
Close
| | topic id <%response.Write(vtopid)%> |
| Active user | <%Response.write(Application("visitors"))%> |
|
| | hello<%response.Write(vopenflg)%> |
<%end if%>
function moderate()
{
window.location = "moderator1.asp"
}
[/code]
-- modified at 5:01 Tuesday 13th November, 2007
sanjeev
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idsanjeevjha wrote: for each stropt1 in request.QueryString
Why this loop? Your code doesn't work if the loop actually does loop.
idsanjeevjha wrote: vtopid = request.QueryString(stropt1)
Where is the form tag? Do you put the value in the querystring in the action value of the form tag? Otherwise you don't have any querystring values when you post the form.
idsanjeevjha wrote:
Meta tags goes in the header.
idsanjeevjha wrote:
"50%" is not a valid value for the colspan argument.
idsanjeevjha wrote: response.redirect("moderator1.asp")
conn.close
set conn=nothing
You have to close the connection before you do the redirect.
Experience is the sum of all the mistakes you have done.
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hi i think you are not understand my question my english is very poor so i try to clear my question ok. T
his loop for call the row detail which linked acording to topid and display only one record thats click if this loop is not used how can call thats row which wants to update so this loop is used and click on which topic it goes to update1.asp and display its row detail then select a option and click on submit button to update record .
[code]
for each stropt1 in request.QueryString
%>
<%
vtopid = request.QueryString(stropt1)
R.open "Select top_id,top_sub,MSG,open_flg,launch_by,launch_dt from topmaster where top_id="&vtopid&"",conn, adOpenStatic, adLockOptimistic, adCmdText
%>
<title>Vioce Of Baraunians
<% if not isempty(request.Form("submit")) then
vopenflg=request.form("vopenflg")
dim sqlstr
sqlstr = "update topmaster set open_flg = '"&request.Form("vopenflg")&"' where top_id = " & vtopid
response.Write(vopenflg)
conn.execute sqlstr
R.close
conn.close
set conn=nothing
end if
next
%>
| TOPIC ID | TOPIC SUBJECT | MESSAGE | POSTED BY | POSTED DATE | Permission | | <%=R("top_id")%> | <%Response.Write R("top_sub")%> | <%=R("msg")%> | <%=R("launch_by")%> | <%=R("launch_dt")%> | Apply
Normal
Absue
Close
| | topic id <%response.Write(vtopid)%> |
| Active user | <%Response.write(Application("visitors"))%> |
[/code]
if question is clear then plz guide me in updation thank for your copration.
sanjeev
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