Error : The underlying connection was closed.

Question

Hello Friends,

I am sending 5 sms from my asp.net application in c# at a time using HttpWebRequest. Its running fine but sometimes sms sending fails becoz of this error:

Error : The underlying connection was closed: An unexpected error occurred on a receive.

Code for sending sms:

I tried webreq.KeepAlive = true; but still it doesn't work...

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Page curent = new Page(); string SmsUrl = url + parameter; HttpWebRequest webreq = WebRequest.Create(SmsUrl) as HttpWebRequest; webreq.ContentType = "application/x-www-form-urlencoded";//"text/html; charset=UTF-8"; webreq.Method = "POST"; byte[] bytes = Encoding.ASCII.GetBytes(parameter); webreq.Timeout = 10000000; webreq.KeepAlive = true; Stream os = null;

WebResponse webresponce = webreq.GetResponse();

if (webresponce == null)

{

return null;

 }

 StreamReader sr = new StreamReader(webresponce.GetResponseStream());

 res = sr.ReadToEnd();

 Console.WriteLine(res);

 return res;

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Please advice something...