/// <summary>
/// Send a message to a peer still connected.
/// </summary>
/// <param name="Message">Message in String(UTF16 encode only).</param>
/// <param name="PeerIP">IP:Port</param>
/// <returns>If return False the sending is failed.</returns>
public static void Send(string Message, string PeerIP)
{
Thread t = new Thread(new ParameterizedThreadStart(delegate
{
// convert the UTF16 to Byte[]
byte[] Message_Byte = new byte[Message.Length * 2];
Message_Byte = ASCIIEncoding.Unicode.GetBytes(Message);
PeersList.Peer peer = PeersList.GetPeerByIP(PeerIP);
try
{
NetworkStream stream = peer.Client.GetStream();
stream.Write((byte[])Message_Byte, 0, ((byte[])Message_Byte).Length);
}
catch
{
// remove the peer
PeersList.RemovePeer(PeerIP);
Debug.WriteLine("A message hasn't been sent, probably the peer is offline or disconnected", "Error");
//MessageBox.Show("ERROR: " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); // DEBUG
}
}));
t.Name = "MessageSender";
t.IsBackground = true;
t.Start();
}
/// <summary>
/// Send a request of connection to all peers that are contained in the all XML-Lists if them aren't already connected with this client.
/// Then deletes all XML-Lists.
/// </summary>
/// <param name="n">Max number of connections that will be opened. Set 0 to open all possible connections.</param>
public static void ConnToPeers(int n = 0)
{
string[] lists = Directory.GetFiles((Global.TempDirectory + @"List\"), "List_*.xml", SearchOption.AllDirectories);
foreach (string listPath in lists)
{
XmlDocument list = new XmlDocument();
// load the Xml-List
while (true)
{
try
{
list.Load(listPath);
break;
}
catch (IOException)
{
}
catch (Exception ex)
{
Debug.WriteLine("Error to load a XML-List from " + listPath + " : " + ex.Message, "Error");
throw new IOException("Error to load a XML-List from " + listPath + " : " + ex.Message);
}
}
XmlNodeList nodes = list.DocumentElement.GetElementsByTagName("Peers");
// get the single peers from the list
int i = 0;
foreach (XmlNode node in nodes)
{
if (i < n)
{
string IP = node.SelectSingleNode("IP").InnerText;
// control if this peer is already connected with this client
if (PeersList.GetPeerByIP(IP) == null)
{
string RequestConnectionMessage = Bouncer.RequestMessage(IP);
MessageSender.SendConnectionRequest(RequestConnectionMessage, IP);
}
if (n != 0)
{
i++;
}
}
else
{
break;
}
}
// delete the list
File.Delete(listPath);
}
}
/// <summary>
/// Send a message to a peer still connected ( USE THIS FOR SENDING MESSAGE WITH BINARY PARTS )
/// </summary>
/// <param name="IMessage">Message in IMessage interface.</param>
/// <param name="PeerIP">IP:Port</param>
/// <returns>If return False the sending is failed.</returns>
public static void Send(Messages.IMessage IMessage, string PeerIP)
{
byte[] Message_Byte = IMessage.MessageByte;
PeersList.Peer peer = PeersList.GetPeerByIP(PeerIP);
try
{
NetworkStream stream = peer.Client.GetStream();
stream.Write((byte[])Message_Byte, 0, ((byte[])Message_Byte).Length);
}
catch
{
// remove the peer
PeersList.RemovePeer(PeerIP);
Debug.WriteLine("A message hasn't been sent, probably the peer is offline or disconnected", "Error");
//MessageBox.Show("ERROR: " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); // DEBUG
}
}