/// <summary>
/// Remove client from the server.
/// </summary>
/// <param name="server"></param>
/// <param name="client"></param>
public static void Release(GXServer server, GXClient client)
{
lock (m_syncRoot)
{
try
{
if (client.Tracing)
{
server.Media.OnTrace -= new TraceEventHandler(client.media_OnTrace);
client.Tracing = false;
}
}
catch (Exception ex)
{
//Ignore if fails.
System.Diagnostics.Debug.WriteLine(ex.Message);
}
int cnt = 0;
lock (server.Clients.SyncRoot)
{
cnt = server.Clients.Count;
}
if (cnt == 1)
{
server.m_Sender.Closing.Set();
server.m_Receiver.Closing.Set();
server.m_SendThread.Join();
server.m_ReceiverThread.Join();
if (server.Media != null)
{
if (server.Media != null)
{
server.Media.Close();
}
}
server.Clients.Remove(client);
m_instances.Remove(server.m_Name);
}
else
{
server.Clients.Remove(client);
}
}
}
/// <summary>
/// GXServer class factory.
/// </summary>
public static GXServer Instance(Gurux.Common.IGXMedia media, GXClient client)
{
lock (m_syncRoot)
{
if (m_instances == null)
{
m_instances = new Dictionary<string, GXServer>();
Handlers = new Dictionary<IGXEventHandler, object>();
}
string name = media.Name;
if (string.IsNullOrEmpty(name))
{
name = media.MediaType;
}
GXServer server;
if (m_instances.ContainsKey(name))
{
server = m_instances[name];
if (server.m_bParseReceivedPacket != client.ParseReceivedPacket)
{
throw new Exception(Resources.ServerFailedToAcceptNewClientParseReceivedPacketValueIsInvalid);
}
if (!object.Equals(server.m_ReplyPacket.Eop, client.Eop))
{
throw new Exception(Resources.ServerFailedToAcceptNewClientEopValueIsInvalid);
}
if (!object.Equals(server.m_ReplyPacket.Bop, client.Bop))
{
throw new Exception(Resources.ServerFailedToAcceptNewClientBopValueIsInvalid);
}
if (server.m_ReplyPacket.ByteOrder != client.ByteOrder)
{
throw new Exception(Resources.ServerFailedToAcceptNewClientByteOrdersAreNotSame);
}
if (server.m_ReplyPacket.MinimumSize != client.MinimumSize)
{
throw new Exception(Resources.ServerFailedToAcceptNewClientMinimumSizeValueIsInvalid);
}
if (!server.m_ReplyPacket.ChecksumSettings.Equals(client.ChecksumSettings))
{
throw new Exception(Resources.ServerFailedToAcceptNewClientChecksumSettingsAreNotSame);
}
lock (server.Clients.SyncRoot)
{
server.Clients.Add(client);
}
return server;
}
server = new GXServer(name);
server.m_ReplyPacket = client.CreatePacket();
lock (server.Clients.SyncRoot)
{
server.Clients.Add(client);
}
server.m_bParseReceivedPacket = client.ParseReceivedPacket;
media.OnClientDisconnected += new Gurux.Common.ClientDisconnectedEventHandler(server.OnClientDisconnected);
media.OnClientConnected += new Gurux.Common.ClientConnectedEventHandler(server.OnClientConnected);
media.OnError += new Gurux.Common.ErrorEventHandler(server.OnError);
media.OnMediaStateChange += new Gurux.Common.MediaStateChangeEventHandler(server.OnMediaStateChange);
media.OnReceived += new Gurux.Common.ReceivedEventHandler(server.OnReceived);
server.m_Media = media;
m_instances[name] = server;
server.m_Sender = new GXServerSender(server);
server.m_Receiver = new GXServerReceiver(server);
server.m_SendThread = new Thread(new ThreadStart(server.m_Sender.Run));
server.m_SendThread.IsBackground = true;
server.m_SendThread.Start();
server.m_ReceiverThread = new Thread(new ThreadStart(server.m_Receiver.Run));
server.m_ReceiverThread.IsBackground = true;
server.m_ReceiverThread.Start();
return server;
}
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="parent"></param>
public GXServerReceiver(GXServer parent)
{
Parent = parent;
}
/// <summary>
/// Closes the connection to the GXCom.
/// The used media is not closed, if there is more than one client that uses GXCom.
/// The media is closed, when the last GXClient closes connection.
/// It is recommended to use Close method, instead of MediaClose.
/// </summary>
/// <seealso cref="CloseMedia">CloseMedia</seealso>
public void CloseServer()
{
if (m_Server != null)
{
NotifyVerbose(this, Resources.ClientClosesServer);
GXServer.Release(m_Server, this);
m_Server = null;
NotifyUnload();
}
}
/// <summary>
/// Assigns new media, after media settings are changed.
/// </summary>
/// <remarks>
/// The media must be created before calling this method.
/// See methods EnumMedias and SelectMedia.
/// Active media is implemented with GetCurrentMedia method.
/// AssignMedia closes the active media and selects a new one.
/// The protocol settings do not change, when AssignMedia is called.
/// After AssignMedia is called, the media must be opened with MediaOpen method.
/// The new media is selected with the SelectMedia method.
/// </remarks>
/// <param name="media">New media component.</param>
/// <seealso cref="SelectMedia">SelectMedia</seealso>
/// <seealso cref="Properties">Properties</seealso>
public void AssignMedia(Gurux.Common.IGXMedia media)
{
IGXMediaContainer tmp = media as IGXMediaContainer;
if (tmp != null)
{
media = (media as IGXMediaContainer).Media;
media.MediaContainer = tmp;
}
CloseServer();
m_MediaType = "";
if (media != null)
{
if (media != null)
{
m_MediaType = media.MediaType;
m_MediaSettings = media.Settings;
}
if (m_MediaSettings != null)
{
m_MediaSettings = m_MediaSettings.Replace("\r\n", "");
}
NotifyLoad();
//Notify that media is changed.
NotifyMediaStateChange(MediaState.Changed);
m_Server = GXServer.Instance(media, this);
//If handler is given before server is up.
if (Handler != null)
{
m_Server.AddEventHandler(Handler, Clients);
Handler = null;
Clients = null;
}
//Notify is media is already open.
if (media.IsOpen)
{
NotifyMediaStateChange(MediaState.Open);
}
}
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="parent"></param>
public GXServerSender(GXServer parent)
{
Parent = parent;
}