/// <summary>
/// Connect to a server.
/// </summary>
/// <param name="ConnectionInfo">ConnectionInfo object containing connection information</param>
/// <param name="ConnectionMode">Mode describing the type of connection</param>
/// <param name="Params">Optional params to be passed to the ServerInfo object</param>
public static void ConnectToServer(ConnectionInfo ConnectionInfo, ConnectionMode ConnectionMode, String[] Params)
{
if ((ConnectionMode != ConnectionMode.FirstConnect) && (ConnectionMode != ConnectionMode.SongRequest)) {
Forms.MainFrm.UpdateStatusLabel("Connecting to \"" + ConnectionInfo.Description + "\" (" + ConnectionMode.ToString() + " mode).");
}
Log.AddStatusText("Connecting to server (" + ConnectionMode.ToString() + " mode): " + ConnectionInfo.Description);
if (ConnectionInfo.Hostname != "") {
Log.AddStatusText("Attempting to resolve hostname: " + ConnectionInfo.Hostname);
IPHostEntry hostInfo = Dns.GetHostEntry(ConnectionInfo.Hostname);
if (hostInfo.AddressList.Length > 0) {
ConnectionInfo.IPAddress = hostInfo.AddressList[0].ToString();
Log.AddStatusText("Hostname (" + ConnectionInfo.Hostname + ") resolved to " + ConnectionInfo.IPAddress + ".");
}
}
serverConnection = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint connectionEndpoint = new IPEndPoint(IPAddress.Parse(ConnectionInfo.IPAddress), ConnectionInfo.InfoPort);
try {
serverConnection.Connect(connectionEndpoint);
} catch (SocketException Se) {
if (Se.ErrorCode == 10061) {
ServerManager.SetOffline(ConnectionInfo.InternalGUID);
Log.AddStatusText("Info server @ " + ConnectionInfo.IPAddress + ":" + ConnectionInfo.InfoPort + " refused connection.");
if ((ConnectionMode != ConnectionMode.FirstConnect) && (ConnectionMode != ConnectionMode.OnlineTest) && (ConnectionMode != ConnectionMode.SongRequest)) {
MessageBox.Show("The Info Server refused connection. Is the server running? Are ports forwarded?");
}
if (ConnectionMode == ConnectionMode.OnlineTest) {
Forms.MainFrm.UpdateStatusLabel("Server \"" + ConnectionInfo.Description + "\" is offline. Song skipped.");
}
}
}
if (serverConnection.Connected) {
ServerInfo tempServerInfo = new ServerInfo(serverConnection, SocketCounter, ConnectionInfo, ConnectionMode);
if (Params.Length > 0) { tempServerInfo.ConnectionParams = Params; }
ServerInfoList.Add(tempServerInfo);
WaitForData(tempServerInfo);
Interlocked.Increment(ref SocketCounter);
} else {
Forms.MainFrm.UpdateStatusLabel("Ready");
}
}
/// <summary>
/// Constructor which starts a SocketPacket based on a Server object.
/// </summary>
/// <param name="iServer">Associated Server object</param>
public SocketPacket(ServerInfo iServer)
{
Socket = iServer.Socket;
ServerInfoIndex = iServer.Index;
ServerInfo = iServer;
Forms.MainFrm.UpdateStatusProgressBar("Increment", DataBuffer.Length);
}
/// <summary>
/// An always-active function that waits for the server to send data to the client. Eventually trigers OnDataReceived().
/// </summary>
/// <param name="waitServerInfo">Associated Server object</param>
private static void WaitForData(ServerInfo waitServerInfo)
{
if (asyncCallBack == null) { asyncCallBack = new AsyncCallback(OnDataReceived); }
if (waitServerInfo != null) {
SocketPacket SocketPacket = new SocketPacket(waitServerInfo);
asyncResult = SocketPacket.Socket.BeginReceive(
SocketPacket.DataBuffer,
0, SocketPacket.DataBuffer.Length,
SocketFlags.None,
asyncCallBack,
SocketPacket
);
}
}
