Handle network exceptions
/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Handle network exceptions.
using System;
using System.Net;
using System.IO;
public class NetExcDemo {
public static void Main() {
int ch;
try {
// First, create a WebRequest to a URI.
HttpWebRequest req = (HttpWebRequest)
WebRequest.Create("http://www.osborne.com");
// Next, send that request and return the response.
HttpWebResponse resp = (HttpWebResponse)
req.GetResponse();
// From the response, obtain an input stream.
Stream istrm = resp.GetResponseStream();
/* Now, read and display the html present at
the specified URI. So you can see what is
being displayed, the data is shown
400 characters at a time. After each 400
characters are displayed, you must press
ENTER to get the next 400. */
for(int i=1; ; i++) {
ch = istrm.ReadByte();
if(ch == -1) break;
Console.Write((char) ch);
if((i%400)==0) {
Console.Write("\nPress a key.");
Console.Read();
}
}
// Close the Response. This also closes istrm.
resp.Close();
} catch(WebException exc) {
Console.WriteLine("Network Error: " + exc.Message +
"\nStatus code: " + exc.Status);
} catch(ProtocolViolationException exc) {
Console.WriteLine("Protocol Error: " + exc.Message);
} catch(UriFormatException exc) {
Console.WriteLine("URI Format Error: " + exc.Message);
} catch(NotSupportedException exc) {
Console.WriteLine("Unknown Protocol: " + exc.Message);
} catch(IOException exc) {
Console.WriteLine("I/O Error: " + exc.Message);
}
}
}
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