what KeepAlive property with Httpversion 11 true or false?

Rajveer singh

Dear all,

I'm using Httpwebrequset method and ProtocolVersion 11 after thar error raised

'The underlying connection was closed: A connection that was expected to be kept alive was close by server ' how to resolved this issue

code here

HttpWebRequest req = (HttpWebRequest)(HttpWebRequest.Create(url));

req.Method = "POST";

req.ProtocolVersion = HttpVersion.Version11;

req.ContentType = "application/xml";

req.KeepAlive = false;req.Headers.Set(HttpRequestHeader.Authorization, "Basic jhfgshfghj==");

// d1 = DateTime.Now;

XmlDocument XDAuth = new XmlDocument();

XmlNode docNode = XDAuth.CreateXmlDeclaration("1.0", "UTF-8", "yes");

XDAuth.AppendChild(docNode);

XmlNode Root = XDAuth.AppendChild(XDAuth.CreateElement("xml"));

11 Replies

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Ravi Sangtani9y ago
Try this code

HttpWebRequest req = (HttpWebRequest)(HttpWebRequest.Create(url));
req.UserAgent = "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:40.0) Gecko/20100101 Firefox/40.0";
req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
req.KeepAlive = true;
req.ContentType = "application/xml";
req.Method = WebRequestMethods.Http.Post;
req.ProtocolVersion = HttpVersion.Version11;
req.Headers.Set(HttpRequestHeader.Authorization, "Basic tyydrtyrtyrtyrtyvfcgh==");
Rajveer singh9y ago
{
if (withoutnetwork) return "A";
String active_status = "";
String status_message = "";
try
{
HttpWebRequest req = (HttpWebRequest)(HttpWebRequest.Create(url));
req.Method = "POST";
req.ProtocolVersion = HttpVersion.Version11;
req.ContentType = "application/xml";
req.KeepAlive = true;
req.Headers.Set(HttpRequestHeader.Authorization, "Basic tyydrtyrtyrtyrtyvfcgh==");
// d1 = DateTime.Now;
XmlDocument XDAuth = new XmlDocument();
XmlNode docNode = XDAuth.CreateXmlDeclaration("1.0", "UTF-8", "yes");
XDAuth.AppendChild(docNode);
XmlNode Root = XDAuth.AppendChild(XDAuth.CreateElement("xml"));
XmlNode otpnode = Root.AppendChild(XDAuth.CreateElement("device_id"));
otpnode.InnerText = stored_terminal;
otpnode = Root.AppendChild(XDAuth.CreateElement("hash"));
otpnode.InnerText = stored_hash;
otpnode = Root.AppendChild(XDAuth.CreateElement("org_id"));
otpnode.InnerText = stored_org;
otpnode = Root.AppendChild(XDAuth.CreateElement("loc_id"));
otpnode.InnerText = stored_loc_id;
otpnode = Root.AppendChild(XDAuth.CreateElement("entry_id"));
otpnode.InnerText = stored_entrypoint_id;
otpnode = Root.AppendChild(XDAuth.CreateElement("cpu_id"));
otpnode.InnerText = GetProcessorID();
otpnode = Root.AppendChild(XDAuth.CreateElement("device_mac"));
otpnode.InnerText = GetMacAddress();
otpnode = Root.AppendChild(XDAuth.CreateElement("bio_device_id"));
otpnode.InnerText = device_serial;
string content = XDAuth.OuterXml;
req.ContentLength = content.Length;
Stream wri = req.GetRequestStream();
byte[] array = Encoding.UTF8.GetBytes(content);
wri.Write(array, 0, array.Length);
wri.Flush();
wri.Close();
HttpWebResponse HttpWResp = (HttpWebResponse)req.GetResponse();
int resCode = (int)HttpWResp.StatusCode;
StreamReader reader = new StreamReader(HttpWResp.GetResponseStream(), System.Text.Encoding.UTF8);
string resultData = reader.ReadToEnd();
// d2 = DateTime.Now;
string decodedresult = resultData;
System.Xml.XmlDocument Doc = new System.Xml.XmlDocument();
Doc.LoadXml(decodedresult);
System.Xml.XmlNodeList xmlnode;
xmlnode = Doc.GetElementsByTagName("active_status");
for (int i = 0; i < xmlnode.Count; i++)
{
active_status = string.Format(xmlnode[i].ChildNodes.Item(0).InnerText);
}
xmlnode = Doc.GetElementsByTagName("status_message");
for (int i = 0; i < xmlnode.Count; i++)
{
status_message = string.Format(xmlnode[i].ChildNodes.Item(0).InnerText);
}
if (active_status == "A")
{
return (active_status);
}
else if(active_status =="S")
{
MessageBox.Show((status_message + " Device Deacivated by Server").ToString());
return (active_status);
}
else
{
MessageBox.Show(status_message);
return (active_status);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
return active_status;
}
Ravi Sangtani9y ago
Can you send your code what are you request ? what have you done in code that i can identify.
Rajveer singh9y ago
not resolve same issue
The underlying connection was closed: A connection that was expected to be kept alive was close by server
Ravi Sangtani9y ago
Yes
Rajveer singh9y ago
if property =true that problem solve ?
Ravi Sangtani9y ago
See in your code you have define req.KeepAlive = false;
thats y it is giving you error.
Rajveer singh9y ago
Face this issue The underlying connection was closed: A connection that was expected to be kept alive was close by server
Ravi Sangtani9y ago
Hmm right,
But why you are changing to false i think no need to change keep true when you request the server.
Rajveer singh9y ago
But by default this property true
Ravi Sangtani9y ago
Hi Rajveer,
change
req.KeepAlive = true;
Then it will not give you error...