/// <summary>
/// Connects to the end point (node) and sends message to it. If waitForReply is set
/// it will wait for a reply from the node and return the reply. It uses Asynchronous UDP
/// protocol
/// </summary>
/// <param name="node">The end point (node) in the network to communicate with</param>
/// <param name="message">Message to send to node</param>
/// <param name="waitForReply">Whether a reply is expected</param>
/// <returns></returns>
public static byte[] communicateAsync(IPEndPoint node, byte[] message, bool waitForReply)
{
Connection nodeConnection = null;
UdpClient udpClient = null;
byte[] reply = null;
try
{
//connect to node
nodeConnection = new Connection(node);
udpClient = nodeConnection.connect_async();
if(udpClient == null)
{
nodeConnection.disconnect_async();
return null;
}
udpClient.Send(message, message.Length);
System.Net.IPEndPoint senderEndPoint = new System.Net.IPEndPoint(0,0);
if(waitForReply)
reply = udpClient.Receive(ref senderEndPoint);
}
catch (Exception e)
{
return null;
}
finally
{
nodeConnection.disconnect_async();
}
if(reply != null && reply.Length == 0)
return null;
return reply;
}
public static NetworkStream OpenCommunicationChannel(IPEndPoint node)
{
Connection nodeConnection = null;
NetworkStream nodeStream = null;
try
{
//connect to node
nodeConnection = new Connection(node);
nodeStream = nodeConnection.connect_sync();
if(nodeStream == null)
{
nodeConnection.disconnect_sync();
return null;
}
}
catch (Exception e)
{
int x = 2;
if(nodeConnection != null)
nodeConnection.disconnect_sync();
}
return nodeStream;
}
