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How check result of Connect() if server not found?

 

How check result of Connect() if server not found?
nima_pw

29 Jun, 2009 - 04:46 AM
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Hi all,

I want when server not start yet, when client click on connect button,after 10 ms a message show to him (her) like "Server Not Found!"

But i don't know how find that server is run or no?
I test this for example (it isn't a real code, didn't do new and ...):

CODE
socket client;
client.connect();
if(client.Connect()!=-1)
{
MessegeBox.Show("Server Not Found");
Return();
}


But dosen't work, an error occur that says client.Connect() dosen't return a integer value.
Then how i must check result of socket programming functions like Connect(),Accept(), Listen() etc... in C# to secure that a function worked properly?

I hope explain oneself clearly.

Best regards,
Nima

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eclipsed4utoo

RE: How Check Result Of Connect() If Server Not Found?

29 Jun, 2009 - 04:53 AM
Post #2

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I would put it in a try/catch block. .Net will most likely throw an exception if the server is not found.
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nima_pw

RE: How Check Result Of Connect() If Server Not Found?

29 Jun, 2009 - 07:09 AM
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Meaning in C# we have not local variable to found error like C language? (errno variable and perror() are to find bad result of socket function)
Only way for solve this problem is Try/Catch?
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eclipsed4utoo

RE: How Check Result Of Connect() If Server Not Found?

29 Jun, 2009 - 07:16 AM
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try/catch is used to catch exceptions...

c#

try
{
      socket.Open();
}
catch (SocketException socketEx)
{
     MessageBox.Show("Socket Exception Occurred :: " + socketEx.Message);
}
catch(Exception ex)
{
     MessageBox.Show("General Exception Occurred :: " + ex.Message);
}


you can also get the exception type by doing...

c#

MessageBox.Show(ex.GetType().ToString());


This post has been edited by eclipsed4utoo: 29 Jun, 2009 - 07:20 AM
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