public string GetDocument(string serverIP, string documentName)
{
// retrieve requested document from the specified server
// manage the session with the SD Server
// opening or resuming as needed
// connect to and disconnect from the server w/in this method
// make sure we have valid parameters
// serverIP is the SD Server's IP address
// documentName is the name of a docoument on the SD Server
// both should not be empty
if (String.IsNullOrWhiteSpace(serverIP) || String.IsNullOrWhiteSpace(documentName))
{
throw new Exception("EMpty server IP or document name!");
}
// contact the PRS and lookup port for "SD Server"
PRSClient prs = new PRSClient(prsIP, prsPort, "SD Server");
ushort sdPort = prs.LookupPort();
// connect to SD server by ipAddr and port
// use OpenOrResumeSession() to ensure session is handled correctly
SDClient client = OpenOrResumeSession(serverIP, sdPort);
// send get message to server for requested document
string content = client.GetDocument(documentName);
// disconnect from server
client.Disconnect();
// return the content
return(content);
}
public void Close()
{
// close each open session with the various servers
// for each session...
foreach (SDSession session in sessions.Values)
{
// connect to the SD Server's IP address and port
SDClient client = new SDClient(session.ipAddr, session.port);
client.Connect();
// send the close for this sessionId
client.SessionID = session.sessionId;
client.CloseSession();
// disconnect from server
client.Disconnect();
}
sessions.Clear();
}