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enumeration of Active Sockets

damcg12-Aug-08 2:07

12-Aug-08 2:07

I'm try to make a little to monitor for my sockets. I would like to get info on each connection, like end points, time connected, blah, blah. I have read few articles on sockets they appear to all be about creating new sockets. I just want list active connections. I would think that there is a .net object that does some thing like this but i seem to find it. Any suggestions? Thanks

Re: enumeration of Active Sockets

leppie12-Aug-08 2:28

12-Aug-08 2:28

Socket.Select?

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IronScheme - 1.0 alpha 4a out now (29 May 2008)

Re: enumeration of Active Sockets

damcg12-Aug-08 3:01

12-Aug-08 3:01

Thank you but Socket.Select requires you to pass known sockets it. I need a way pulling the active sockets, I'm wanting to watch all Sockets on my box for activity
Thanks

Re: enumeration of Active Sockets

leppie12-Aug-08 3:12

12-Aug-08 3:12

Create a list of Socket instances (not opened), of all 64 * 1024 port on your system, pass that to Socket.Select.

xacc.ide - now with TabsToSpaces support
IronScheme - 1.0 alpha 4a out now (29 May 2008)

Re: enumeration of Active Sockets

damcg12-Aug-08 3:55

12-Aug-08 3:55

thank you

Intermittent Code behind Errors in C#.net

AnuVM12-Aug-08 1:53

12-Aug-08 1:53

Hi All,
I have changed my site from one IP to another very recently and copied all files from old to new IP.
But I am getting some errors intermittently when I am trying to access .net pages. I am using asp along with C#.net in my site. But the error is only for .net pages. Interestingly these errors will resolve after some times and site will work. After 10 or 20 minuets the errors will appear again. Please help

Re: Intermittent Code behind Errors in C#.net

Christian Graus12-Aug-08 1:57

Christian Graus

12-Aug-08 1:57

Why the flood of ASP.NET questions in the C# forum tonight ?

I suggest you ask in the right forum and try posting some code. You have some code, somewhere in your site, we're not sure what it does, but it fails sometimes. Not sure how to answer that.....

Christian Graus

No longer a Microsoft MVP, but still happy to answer your questions.

URL escape issue

George_George12-Aug-08 1:13

12-Aug-08 1:13

Hello everyone,

I am new to URL escape, my questions are,

1. What are the rules for URL escape?

2. What are the issues if an URL is escaped more than one time?

3. Are there any ways to check for an input URL string, whether or not it is escaped?

thanks in advance,
George

Re: URL escape issue

Christian Graus12-Aug-08 1:56

Christian Graus

12-Aug-08 1:56

1 - these are easily googled, surely an article is a better thing to rely on here than a forum reply ?
2 - You can write code to see the effects, just call it over and over and see what you get.
3 - yes, check for invalid characters, such as spaces. Get a full list of invalid chars, if any are there, it has not been, if not, it has been or doesn't need to

Christian Graus

No longer a Microsoft MVP, but still happy to answer your questions.

Re: URL escape issue

George_George12-Aug-08 1:59

12-Aug-08 1:59

Thanks Christian,

For 1, actually I have found some ones. Smile | :)

Smile | :)

For 2, I am just wondering whether there are any CLR/C# class supports escape?

For 3, I have no idea, do you have any referred articles? Invalid chars and spaces you mean what?

regards,
George

Re: URL escape issue

Christian Graus12-Aug-08 2:48

Christian Graus

12-Aug-08 2:48

Yes, there is a class that does this in the ASP.NET namespaces, I am pretty sure.

Christian Graus

No longer a Microsoft MVP, but still happy to answer your questions.

Re: URL escape issue

George_George12-Aug-08 3:01

12-Aug-08 3:01

Thanks Christian,

You mean using API HttpUtility.HtmlEncode to escape/encode URL? Not sure whether you mean this one, could you help to confirm please?

regards,
George

Re: URL escape issue

leppie12-Aug-08 2:29

12-Aug-08 2:29

.NET has a class for this (and HTML).

Look at System.Web.HttpUtility

xacc.ide - now with TabsToSpaces support
IronScheme - 1.0 alpha 4a out now (29 May 2008)

Re: URL escape issue

George_George12-Aug-08 2:36

12-Aug-08 2:36

Cool leppie,

Any ideas for my question item 3? If it is pure ASCII character set, it should not be hard, but if it contains unicode... Any ideas?

regards,
George

Re: URL escape issue

leppie12-Aug-08 2:38

12-Aug-08 2:38

You can use this overload:

public static string UrlDecode(string str, Encoding e)

Just pass Encoding.Unicode (default is UTF8).

xacc.ide - now with TabsToSpaces support
IronScheme - 1.0 alpha 4a out now (29 May 2008)

Re: URL escape issue

George_George12-Aug-08 3:00

12-Aug-08 3:00

Sorry leppie!

My question item 3 is -- "For an input URL string, whether or not it is escaped"? I think the API you provided is to do URL decode (unescape), not to check whether or not it is escaped or not. Any comments?

regards,
George

Re: URL escape issue

leppie12-Aug-08 3:11

12-Aug-08 3:11

George_George wrote:
Sorry leppie!

It's my fault, I didnt read it completely Smile | :)

Smile | :)

I am not sure, maybe you can look for the encoding characters (% isnt it?).

xacc.ide - now with TabsToSpaces support
IronScheme - 1.0 alpha 4a out now (29 May 2008)

Re: URL escape issue

George_George12-Aug-08 3:19

12-Aug-08 3:19

No, leppie! Smile | :)

Smile | :)

Not enough, since if an URL is not escaped, and it contains to-be-escape character like > sign (maybe not), how could you check whether in this situation it is escaped or not?

Also, for an URL string which is not containing any characters to be escaped, how could you make a check?

regards,
George

Re: URL escape issue

leppie12-Aug-08 3:22

12-Aug-08 3:22

George_George wrote:
Also, for an URL string which is not containing any characters to be escaped, how could you make a check?

Compare the string with the output of UrlEncode and see if its the same maybe?

xacc.ide - now with TabsToSpaces support
IronScheme - 1.0 alpha 4a out now (29 May 2008)

Re: URL escape issue

George_George12-Aug-08 16:34

12-Aug-08 16:34

Thanks leppie,

I have tested that for an escaped (encode) string, if we escape (encode) again, the string will be longer each time we encode.

So, even if the string is not the same, you still can not make conclusion whether the original string is encoded or not. Here is my code. Any ideas?

class Program
{
    static void Main(string[] args)
    {
        string abc = HttpUtility.UrlEncode("http://abc def");
        abc = HttpUtility.UrlEncode(abc);
        abc = HttpUtility.UrlEncode(abc);
        abc = HttpUtility.UrlEncode(abc);
        abc = HttpUtility.UrlEncode(abc);

        return;
    }
}

regards,
George

Re: URL escape issue

leppie12-Aug-08 23:34

12-Aug-08 23:34

Encode then decode, encoding several times wont detect anything!

xacc.ide - now with TabsToSpaces support
IronScheme - 1.0 alpha 4a out now (29 May 2008)

Re: URL escape issue

George_George13-Aug-08 1:18

13-Aug-08 1:18

Thanks leppie,

I am confused about your reply, do you answer to my original question item 3? If yes, your solution is?

Sorry my English is not good. Smile | :)

Smile | :)

regards,
George

Re: URL escape issue

Manas Bhardwaj12-Aug-08 3:17

12-Aug-08 3:17

One solution could be to use regular expression and find the occurrence of &, % etc…

Re: URL escape issue

George_George12-Aug-08 3:20

12-Aug-08 3:20

I mentioned here,

http://www.codeproject.com/script/Forums/View.aspx?fid=1649&msg=2674968[^]

For a string without % character, you can not make conclusion whether it is escaped or not. Smile | :)

Smile | :)

Any comments?

regards,
George

iterate over all the forms in a project

mrcooll12-Aug-08 1:08

12-Aug-08 1:08

hii 4 all
How can i iterate over all the forms in my project?
it is not mdi application
i have tried application.openforms its not working!

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