/// <summary>
/// Adds a command packet to the reliable queue.
/// </summary>
/// <param name="cmd">Command packet to add to the queue</param>
/// <returns>UDP_OK or error code</returns>
public int AddReliableCommand(ReliableEntry cmd)
{
if (this.Count >= UdpConsts.MAX_RELIABLE_QUEUED)
{
return(UdpConsts.UDP_RELIABLEQUEUEFULL);
}
lock (this.SyncRoot)
{
if (this.Count > 0)
{
ReliableEntry tmp = this.Peek() as ReliableEntry;
if (tmp != null)
{
if (tmp.SequenceNum == cmd.SequenceNum)
{
return(UdpConsts.UDP_ALREADYINQUEUE);
}
}
}
this.Enqueue(cmd);
}
return(UdpConsts.UDP_OK);
}
public int AddReliableCommand(ReliableEntry cmd)
{
if (this.Count >= UdpConsts.MAX_RELIABLE_QUEUED)
{
return(UdpConsts.UDP_RELIABLEQUEUEFULL);
}
object syncRoot;
Monitor.Enter(syncRoot = this.SyncRoot);
try
{
if (this.Count > 0)
{
ReliableEntry reliableEntry = this.Peek() as ReliableEntry;
if (reliableEntry != null && reliableEntry.SequenceNum == cmd.SequenceNum)
{
return(UdpConsts.UDP_ALREADYINQUEUE);
}
}
this.Enqueue(cmd);
}
finally
{
Monitor.Exit(syncRoot);
}
return(UdpConsts.UDP_OK);
}
public int CacheReliablePacket(string packet)
{
ReliableEntry reliableEntry = new ReliableEntry();
reliableEntry.SequenceNum = this.m_LastSentPacketR;
reliableEntry.CommandPacket = packet;
return(this.m_RQueue.AddReliableCommand(reliableEntry));
}
public void ResendReliablePacket()
{
ReliableEntry reliableEntry = null;
this.RQueue.GetCurrentReliableCommand(out reliableEntry);
if (reliableEntry != null)
{
this.m_Parent.SendData(this.RemoteEP.Address.ToString(), this.RemoteEP.Port, reliableEntry.CommandPacket);
}
}
/// <summary>
/// Resends the current reliable packet, used if a reliable packet acknowledgement
/// does not come through fast enough to guarantee delivery of the packet.
/// </summary>
public void ResendReliablePacket()
{
ReliableEntry rcmd = null;
RQueue.GetCurrentReliableCommand(out rcmd);
//If the sequence number from the one stored in the first field
//of the ACK is the same as the one in the queue, remove it.
if (rcmd != null)
{
m_Parent.DebugDump("Found a reliable packet on the queue, resending.");
m_Parent.SendData(RemoteEP.Address.ToString(), RemoteEP.Port, rcmd.CommandPacket);
}
}
/// <summary>
/// Ges the current reliable command from the queue, but does not remove it from the queue.
/// </summary>
/// <param name="cmd_out">Command at start of queue</param>
/// <returns>UDP_OK or error code</returns>
public int GetCurrentReliableCommand(out ReliableEntry cmd_out)
{
cmd_out = null;
lock (this.SyncRoot)
{
//No reliable packets on the queue
if (this.Count == 0)
{
return(UdpConsts.UDP_NOTFOUND);
}
cmd_out = this.Peek() as ReliableEntry;
}
return(UdpConsts.UDP_OK);
}
public int GetCurrentReliableCommand(out ReliableEntry cmd_out)
{
cmd_out = null;
object syncRoot;
Monitor.Enter(syncRoot = this.SyncRoot);
try
{
if (this.Count == 0)
{
return(UdpConsts.UDP_NOTFOUND);
}
cmd_out = (this.Peek() as ReliableEntry);
}
finally
{
Monitor.Exit(syncRoot);
}
return(UdpConsts.UDP_OK);
}
public void ProcessCompletedCommand(Command cmd)
{
if (!this.Authed && cmd.OPCode == UdpConsts.OPCODE_LOGINDETAILS)
{
this.m_Parent.ConnectionAuthing(this, cmd);
return;
}
if (cmd.OPCode == UdpConsts.OPCODE_PING)
{
if (this.Authed)
{
this.UpdateTimeout();
if (!this.Server)
{
this.SendUnreliableCommand(0, UdpConsts.OPCODE_PING, null);
}
}
return;
}
if (cmd.OPCode == UdpConsts.OPCODE_LOGINACK)
{
if (cmd.Fields[0] == "OK")
{
this.Authed = true;
this.m_Parent.AuthenticatedWithConnection(this, true, "");
return;
}
this.m_Parent.AuthenticatedWithConnection(this, false, cmd.Fields[1]);
this.m_Parent.RemoveConnection(this, false, cmd.Fields[1]);
return;
}
else
{
if (cmd.OPCode == UdpConsts.OPCODE_DISCONNECT)
{
this.m_Parent.RemoveConnection(this, false, cmd.Fields[0]);
return;
}
if (cmd.OPCode == UdpConsts.OPCODE_RELIABLEACK)
{
ReliableEntry reliableEntry = null;
this.RQueue.GetCurrentReliableCommand(out reliableEntry);
if (reliableEntry != null)
{
try
{
if (reliableEntry.SequenceNum == Convert.ToUInt32(cmd.Fields[0]))
{
this.RQueue.NextReliableCommand();
ReliableEntry reliableEntry2 = null;
this.RQueue.GetCurrentReliableCommand(out reliableEntry2);
if (reliableEntry2 != null)
{
this.m_Parent.SendData(this.RemoteEP.Address.ToString(), this.RemoteEP.Port, reliableEntry2.CommandPacket);
}
}
}
catch (Exception)
{
}
}
}
if (this.Authed)
{
this.m_Parent.CommandReceived(this, cmd);
}
return;
}
}
/// <summary>
/// Adds a reliable packet to the reliable packet queue on the specified connection
/// </summary>
public int CacheReliablePacket(string packet)
{
ReliableEntry re = new ReliableEntry();
re.SequenceNum = m_LastSentPacketR;
re.CommandPacket = packet;
return m_RQueue.AddReliableCommand(re);
}
/// <summary>
/// Ges the current reliable command from the queue, but does not remove it from the queue.
/// </summary>
/// <param name="cmd_out">Command at start of queue</param>
/// <returns>UDP_OK or error code</returns>
public int GetCurrentReliableCommand(out ReliableEntry cmd_out)
{
cmd_out = null;
lock (this.SyncRoot)
{
//No reliable packets on the queue
if (this.Count == 0)
return UdpConsts.UDP_NOTFOUND;
cmd_out = this.Peek() as ReliableEntry;
}
return UdpConsts.UDP_OK;
}
/// <summary>
/// Adds a command packet to the reliable queue.
/// </summary>
/// <param name="cmd">Command packet to add to the queue</param>
/// <returns>UDP_OK or error code</returns>
public int AddReliableCommand(ReliableEntry cmd)
{
if(this.Count >= UdpConsts.MAX_RELIABLE_QUEUED)
return UdpConsts.UDP_RELIABLEQUEUEFULL;
lock (this.SyncRoot)
{
if (this.Count > 0)
{
ReliableEntry tmp = this.Peek() as ReliableEntry;
if (tmp != null)
{
if (tmp.SequenceNum == cmd.SequenceNum)
return UdpConsts.UDP_ALREADYINQUEUE;
}
}
this.Enqueue(cmd);
}
return UdpConsts.UDP_OK;
}
/// <summary>
/// This function is called internally when a command has been parsed and is ready to be processed
/// by the UDP engine and possibly the host application.
/// </summary>
/// <param name="cmd">Object containing data about the command to be processed.</param>
public void ProcessCompletedCommand(Command cmd)
{
//Client sent login details
if (!Authed)
{
if (cmd.OPCode == UdpConsts.OPCODE_LOGINDETAILS)
{
m_Parent.ConnectionAuthing(this, cmd);
return;
}
}
//Remote host sent us a ping
if (cmd.OPCode == UdpConsts.OPCODE_PING)
{
if (Authed)
{
m_Parent.DebugDump("Received ping from " + this.RemoteEP.ToString());
UpdateTimeout();
if (!Server) //If this is not a connection to a server
{
SendUnreliableCommand(0, UdpConsts.OPCODE_PING, null);
}
}
return;
}
//Server sent acknowledgement of our connection
if (cmd.OPCode == UdpConsts.OPCODE_LOGINACK)
{
if (cmd.Fields[0] == "OK")
{
Authed = true;
m_Parent.DebugDump("Authenticated with " + this.RemoteEP.ToString() + " OK. Connected!");
//Send the authenticated event to the third party application
m_Parent.AuthenticatedWithConnection(this, true, "");
}
else
{
m_Parent.DebugDump("Authentication to " + this.RemoteEP.ToString() + " Failed!");
//Send the not authed event
m_Parent.AuthenticatedWithConnection(this, false, cmd.Fields[1]);
//Disconnect the connection (but don't send a disconnection packet back)
m_Parent.RemoveConnection(this, false, cmd.Fields[1]);
}
return;
}
//Remote host disconnected from us
if (cmd.OPCode == UdpConsts.OPCODE_DISCONNECT)
{
m_Parent.RemoveConnection(this, false, cmd.Fields[0]);
return;
}
//Reliable packet acknowledgement
if (cmd.OPCode == UdpConsts.OPCODE_RELIABLEACK)
{
m_Parent.DebugDump("Received reliable ACK for packet " + cmd.Fields[0] + ".");
//Get the current reliable command
ReliableEntry rcmd = null;
RQueue.GetCurrentReliableCommand(out rcmd);
//If the sequence number from the one stored in the first field
//of the ACK is the same as the one in the queue, remove it.
if (rcmd != null)
{
try
{
if (rcmd.SequenceNum == Convert.ToUInt32(cmd.Fields[0]))
{
RQueue.NextReliableCommand();
ReliableEntry next_rel = null;
RQueue.GetCurrentReliableCommand(out next_rel);
if (next_rel != null)
{
m_Parent.DebugDump("Moving reliable packet queue - next packet is " + next_rel.SequenceNum.ToString());
//Send the next reliable packet
m_Parent.SendData(RemoteEP.Address.ToString(), RemoteEP.Port, next_rel.CommandPacket);
}
else
{
m_Parent.DebugDump("Moving reliable packet queue - no more packets on reliable queue.");
}
}
}
catch (Exception e)
{
m_Parent.DebugDump("Exception: " + e.Message);
}
}
}
//Give unrecognised commands to the application
if (Authed)
{
m_Parent.CommandReceived(this, cmd);
}
}
