// This queues a command for sending
public void SendCommand(RemoteCommand cmd)
{
lock (sendcommands)
{
sendcommands.Enqueue(cmd);
}
}
// This queues a command for sending
public void SendCommand(RemoteCommand cmd)
{
lock(sendcommands)
{
sendcommands.Enqueue(cmd);
}
}
// This creates a reply command
public RemoteCommand CreateReply(string command)
{
RemoteCommand newcmd = new RemoteCommand(client);
newcmd.source = this.target;
newcmd.target = this.source;
newcmd.command = command;
return newcmd;
}
// When a command is received
public override void ReceiveCommand(RemoteCommand cmd)
{
// Raise event
if (ReceiveCommandEvent != null)
{
ReceiveCommandEvent(cmd);
}
}
// This creates a reply command
public RemoteCommand CreateReply(string command)
{
RemoteCommand newcmd = new RemoteCommand(client);
newcmd.source = this.target;
newcmd.target = this.source;
newcmd.command = command;
return(newcmd);
}
// Internal update on network thread
private void service_UpdateEvent()
{
lock (sendcommands)
{
// Send queued commands
while (sendcommands.Count > 0)
{
RemoteCommand cmd = sendcommands.Dequeue();
service.SendCommand(cmd);
}
}
}
// This processes a command
public void ProcessCommand(RemoteCommand cmd)
{
// Verify that the target service exists
if (!services.ContainsKey(cmd.Target))
{
throw new InvalidDataException("Target service '" + cmd.Target + "' is not known.");
}
RemoteService svc = services[cmd.Target];
svc.ReceiveCommand(cmd);
}
// Internal receive command event
private void service_ReceiveCommandEvent(RemoteCommand cmd)
{
if (container.InvokeRequired)
{
container.Invoke(new EventRemoteService.ReceiveCommandDelegate(service_ReceiveCommandEvent), cmd);
}
else
{
if (ReceiveCommand != null)
{
ReceiveCommand(cmd);
}
}
}
// Receive messages from remote service
private void remote_ReceiveCommand(RemoteCommand cmd)
{
RemoteCommand reply;
// Title requested
switch (cmd.Command)
{
case "STATUS":
reply = cmd.CreateReply("STATUS");
string statusinfo;
if (isplaying)
{
if (ispaused)
{
statusinfo = "PAUSED\r\n";
}
else
{
statusinfo = "PLAYING\r\n";
}
statusinfo += itemtitle.Text + "\r\n";
statusinfo += medialength + "\r\n";
statusinfo += currentmediapos + "\r\n";
}
else
{
statusinfo = "STOPPED\r\n";
}
reply.SetData(statusinfo);
remote.SendCommand(reply);
break;
case "STOP":
reply = cmd.CreateReply("OK");
remote.SendCommand(reply);
stopbutton_Click(stopbutton, EventArgs.Empty);
break;
case "PAUSE":
reply = cmd.CreateReply("OK");
remote.SendCommand(reply);
pausebutton_Click(pausebutton, EventArgs.Empty);
break;
}
}
// This processes the client.
// Returns false when the connection was closed.
public bool Process(RemoteManager manager)
{
// Send data
int maxsendbytes = Math.Min(SEND_RECEIVE_SIZE, (int)sendbuffer.Length);
int bytessent = socket.Send(sendbuffer.ToArray(), 0, maxsendbytes, SocketFlags.None);
int bytesremaining = (int)sendbuffer.Length - bytessent;
MemoryStream oldbuffer = sendbuffer;
sendbuffer = new MemoryStream(Math.Max(bytesremaining, SEND_RECEIVE_SIZE));
if (bytesremaining > 0)
{
sendbuffer.Write(oldbuffer.ToArray(), bytessent, bytesremaining);
}
oldbuffer.Dispose();
// Receive data
byte[] datablock = new byte[SEND_RECEIVE_SIZE];
int bytesreceived = socket.Receive(datablock);
if (bytesreceived == 0)
{
// When Receive returns 0 bytes the connection was closed
return(false);
}
else
{
// Receive new data from client
NotifyResponse();
ReceiveData(datablock, bytesreceived);
// Parse and process commands
RemoteCommand c = TryParseCommand();
while (c != null)
{
manager.ProcessCommand(c);
c = TryParseCommand();
}
return(true);
}
}
// This attempts to parse a command and returns the command when complete
public RemoteCommand TryParseCommand()
{
// If we're not working on a command yet, make one now
if (receivecommand == null)
{
receivecommand = new RemoteCommand(this);
}
// Try parsing
if (receivecommand.TryParse(ref receivebuffer))
{
// When complete, return the command and forget about this command
RemoteCommand cmd = receivecommand;
receivecommand = null;
return(cmd);
}
else
{
return(null);
}
}
// Receive messages from remote service
private void remote_ReceiveCommand(RemoteCommand cmd)
{
RemoteCommand reply;
// Title requested
switch(cmd.Command)
{
case "STATUS":
reply = cmd.CreateReply("STATUS");
string statusinfo;
if(isplaying)
{
if(ispaused)
statusinfo = "PAUSED\r\n";
else
statusinfo = "PLAYING\r\n";
statusinfo += itemtitle.Text + "\r\n";
statusinfo += medialength + "\r\n";
statusinfo += currentmediapos + "\r\n";
}
else
{
statusinfo = "STOPPED\r\n";
}
reply.SetData(statusinfo);
remote.SendCommand(reply);
break;
case "STOP":
reply = cmd.CreateReply("OK");
remote.SendCommand(reply);
stopbutton_Click(stopbutton, EventArgs.Empty);
break;
case "PAUSE":
reply = cmd.CreateReply("OK");
remote.SendCommand(reply);
pausebutton_Click(pausebutton, EventArgs.Empty);
break;
}
}
// This sends a command to the client
public void SendCommand(RemoteCommand cmd)
{
cmd.WriteTo(sendbuffer);
}
// This attempts to parse a command and returns the command when complete
public RemoteCommand TryParseCommand()
{
// If we're not working on a command yet, make one now
if(receivecommand == null)
receivecommand = new RemoteCommand(this);
// Try parsing
if(receivecommand.TryParse(ref receivebuffer))
{
// When complete, return the command and forget about this command
RemoteCommand cmd = receivecommand;
receivecommand = null;
return cmd;
}
else
{
return null;
}
}
// This sends a command!
public void SendCommand(RemoteCommand cmd)
{
cmd.Client.SendCommand(cmd);
}
// Receiving a command!
// The service should implement this to handle the command.
public virtual void ReceiveCommand(RemoteCommand cmd)
{
}
// This sends a command!
public void SendCommand(RemoteCommand cmd)
{
cmd.Client.SendCommand(cmd);
}
// Receiving a command!
// The service should implement this to handle the command.
public virtual void ReceiveCommand(RemoteCommand cmd)
{
}
// This processes a command
public void ProcessCommand(RemoteCommand cmd)
{
// Verify that the target service exists
if(!services.ContainsKey(cmd.Target))
throw new InvalidDataException("Target service '" + cmd.Target + "' is not known.");
RemoteService svc = services[cmd.Target];
svc.ReceiveCommand(cmd);
}
// Internal receive command event
private void service_ReceiveCommandEvent(RemoteCommand cmd)
{
if(container.InvokeRequired)
{
container.Invoke(new EventRemoteService.ReceiveCommandDelegate(service_ReceiveCommandEvent), cmd);
}
else
{
if(ReceiveCommand != null)
ReceiveCommand(cmd);
}
}
// When a command is received
public override void ReceiveCommand(RemoteCommand cmd)
{
// Raise event
if(ReceiveCommandEvent != null)
ReceiveCommandEvent(cmd);
}
// This sends a command to the client
public void SendCommand(RemoteCommand cmd)
{
cmd.WriteTo(sendbuffer);
}
