C# and the WebClient class - application hang?

**Devils Child** · 01-09-2009

hey guys

i've been programming a web application using the System.Net.WebClient class.

Code:

static private string Download(string url)
		{
			WebClient web = new WebClient();
			return web.DownloadString(url);
		}

after 2 or 3 downloads it happens: the WebClient stops working. after a minute of application hang i get a timeout exception. when i look at in in Wireshark, i see that the webclient isn't even sending out a request.

i tried to replicate this problem to a 10-lines-code test-project and the problem doesn't appear after 150 times downloading google...
since my application is lots of code splitted in 3 projects, i'm not really able to post it here.

i also tried the async version of DownloadString. - same result...

thanks for helping

bye

**Devils Child** · 01-09-2009

OK. (to be all clean, i start a new post)

this is my new download function:

Code:

		static private string Download(string url)
		{
			HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
			req.Method = "GET";
			WebResponse respon = req.GetResponse();
			Stream res = respon.GetResponseStream();

			string ret = "";
			byte[] buffer = new byte[1024];
			int read = 0;
			while ((read = res.Read(buffer, 0, buffer.Length)) > 0)
			{
				ret += Encoding.ASCII.GetString(buffer, 0, read);
			}
			return ret;
		}

the error occurs less often, but still.
this line:

Code:

WebResponse respon = req.GetResponse();

the application hangs exactly there.

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