FYI, not sure if this will happen in production. But, we cannot get
webRequest to work in a loop after several iterations. Our business
requirement is to post/get sales data on an hourly (or some interval)
keeping a local cache. Also, to check for version updates. We've
scrapped SOAP and develop a lightweight set of calls because of the
limited resources on these type of devices.
However, during on C# testing, this attached routine is called every
minute and after a short period of time it causes the networking in the
emulator to stop requiring a reboot.
We've determined nothing from the logs other than it seems the DNS
request dies as a reported error first and then additional request just
timeout. But basically it is all over the place and not consistent.
There also seems to be some chatter on this back a few months ago on
bugzillia which discusses webrequests and making sure the dispose
properly. However, that post still says they still have inconsistent
issues.
The question is, does anyone have a fixe for this? Or does it only
happen in the emulator? This is a show stopper for us.
private string getData(string url, Boolean postData, String xmlData)
{
String responseFromServer=string.Empty;
try
{
// Create a request using a URL that can receive a post.
WebRequest request = WebRequest.Create(url);
{
try
{
request.Timeout = 2000 * 60; //Two minutes
if (postData)
{
// Set the Method property of the request to
POST.
request.Method = "POST";
// Create POST data and convert it to a byte
array.
byte[] byteArray =
Encoding.ASCII.GetBytes(xmlData);
// Set the ContentType property of the
WebRequest.
request.ContentType = "text/plain";
// Set the ContentLength property of the
WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
using (Stream dataStream =
request.GetRequestStream())
{
dataStream.Write(byteArray, 0,
byteArray.Length);
}
}
}
catch {
}
// Get the response.
using (WebResponse response = request.GetResponse())
{
Console.WriteLine(((HttpWebResponse)response).StatusDescription);
// Get the stream containing content returned by
the server.
using (Stream responseStream =
response.GetResponseStream())
{
using (StreamReader reader = new
StreamReader(responseStream))
{
responseFromServer = reader.ReadToEnd();
}
}
}
}
}
catch (Exception ex)
{
System.Diagnostics.StackTrace stackTrace = new
System.Diagnostics.StackTrace();
String method = stackTrace.GetFrame(0).GetMethod().Name;
log.writeLogInfo("ERROR " + method + ":", ex.Message +
"\n" + ex.StackTrace.ToString());
}
return responseFromServer;
}
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