} //Main
void TCPListen()
{
try {
TCP.Start();
while (true)
{
TcpClient Client = TCP.AcceptTcpClient();
//Program.ConsoleWriteLine(Client.Client.RemoteEndPoint.ToString() + " Connecting", Color.GreenYellow, Color.Black);
Client.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true);
var ClientStream = Client.GetStream();
if (this.EnableAudio == false)
{
SCMessage message = new SCMessage {
MessageType = SCMessageType.Send_Client_Connection_Info, UDP_Video_Port = 1
};
var bytes = SCMessage.SerializeJSON_ToBytes(message);
ClientStream.Write(bytes, 0, bytes.Length);
}//if
else
{
SCMessage message = new SCMessage {
MessageType = SCMessageType.Send_Client_Connection_Info, UDP_Video_Port = 1, UDP_Audio_Port = 1
};
var bytes = SCMessage.SerializeJSON_ToBytes(message);
ClientStream.Write(bytes, 0, bytes.Length);
}//else
int BytesRead = 0;
try {
BytesRead = ClientStream.Read(this.MessageBuffer, 0, this.MessageBuffer.Length);
var message = SCMessage.DeserializeJSON_FromBytes(this.MessageBuffer, 0, BytesRead);
if (message.MessageType == SCMessageType.Send_Client_Connection_Info)
{
string Password = message.Message;
if (this.Password != Password)
{
SCMessage scmessage = new SCMessage {
MessageType = SCMessageType.Invalid_Password
};
var bytes = SCMessage.SerializeJSON_ToBytes(scmessage);
ClientStream.Write(bytes, 0, bytes.Length);
Program.ConsoleWriteLine(Client.Client.RemoteEndPoint.ToString() + " (Invalid Password)", Color.Red, Color.Black);
Client.Close();
continue;
}//if
string NickName = message.From;
var checkNick = this.Clients.FirstOrDefault(c => c.NickName == NickName);
if (checkNick != null)
{
SCMessage scmessage = new SCMessage {
MessageType = SCMessageType.Invalid_NickName
};
var bytes = SCMessage.SerializeJSON_ToBytes(scmessage);
ClientStream.Write(bytes, 0, bytes.Length);
Program.ConsoleWriteLine(Client.Client.RemoteEndPoint.ToString() + " (Invalid NickName)", Color.Red, Color.Black);
Client.Close();
continue;
}//if
SCMessage scmessageOK = new SCMessage {
MessageType = SCMessageType.Connection_OK, X = Width_X, Y = Height_Y
};
var bytesOK = SCMessage.SerializeJSON_ToBytes(scmessageOK);
ClientStream.Write(bytesOK, 0, bytesOK.Length);
BytesRead = ClientStream.Read(this.MessageBuffer, 0, this.MessageBuffer.Length);
scmessageOK = SCMessage.DeserializeJSON_FromBytes(this.MessageBuffer, 0, BytesRead);
if (scmessageOK.MessageType == SCMessageType.Connection_OK)
{
Program.ConsoleWriteLine(Client.Client.RemoteEndPoint.ToString() + $" Connected ({NickName})", Color.GreenYellow, Color.Black);
int Video_Udp_Port = message.UDP_Video_Port;
int Audio_Udp_Port = -1;
if (this.EnableAudio)
{
Audio_Udp_Port = message.UDP_Audio_Port;
}//if
this.SendAll_Clients(SCMessage.SerializeJSON_ToBytes(new SCMessage {
Message = NickName, MessageType = SCMessageType.ClientConnected_Message
}));
AddClientInfo(Client, Video_Udp_Port, Audio_Udp_Port, NickName);
}//if
else
{
continue;
}
}//if
else
{
Disconnect(Client);
continue;
} //else
} //try
catch {
Disconnect(Client);
continue;
}//catch
Task.Run(() => {
try {
this.SendAllClientsOnline(Client);
int countRead = 0;
SCMessage scmessage = null;
byte[] clientMessage = new byte[MessageBufferSIZE];
while (true)
{
countRead = ClientStream.Read(clientMessage, 0, clientMessage.Length);
scmessage = SCMessage.DeserializeJSON_FromBytes(clientMessage, 0, countRead);
if (scmessage.MessageType == SCMessageType.Mouse_Click)
{
MouseClick mouseclick = new MouseClick();
mouseclick.Message = scmessage.From;
mouseclick.X = scmessage.X;
mouseclick.Y = scmessage.Y;
MouseClick.DrawMouseClick(mouseclick);
}//if
else if (scmessage.MessageType == SCMessageType.PublicMessage)
{
Program.ConsoleWriteLine($"{scmessage.From} : {scmessage.Message}", Program.Orange, Color.Black);
var sender = this.Clients.FirstOrDefault(c => c.NickName == scmessage.From);
if (sender != null)
{
this.SendAll_Clients(clientMessage, 0, countRead, sender);
}
}//else if
else if (scmessage.MessageType == SCMessageType.PrivateMessage)
{
var toClient = this.Clients.FirstOrDefault(c => c.NickName == scmessage.To);
if (toClient != null)
{
this.SendTCP(clientMessage, 0, countRead, toClient.Client);
}
}//else if
else if (scmessage.MessageType == SCMessageType.DeleteFileServer)
{
var fname = scmessage.Message;
var NickName_ = scmessage.From;
Task.Run(() => {
while (true)
{
try {
if (File.Exists($"{Program.SV_Directory}/{fname}"))
{
File.Delete($"{Program.SV_Directory}/{fname}");
return;
} //if
} //try
catch {
} //catch
Thread.Sleep(1000);
}//while
});
scmessage = new SCMessage {
MessageType = SCMessageType.FileDeleted, Message = fname
};
var bytes_ = SCMessage.SerializeJSON_ToBytes(scmessage);
var sender = this.Clients.FirstOrDefault(c => c.NickName == NickName_);
if (sender != null)
{
this.SendAll_Clients(bytes_, 0, bytes_.Length, sender);
}
}//else if
else if (scmessage.MessageType == SCMessageType.SendFile)
{
string NickName_ = scmessage.From;
SCMessage cMessage = new SCMessage {
MessageType = SCMessageType.FileTCP_Port, UDP_Video_Port = this.FileSendTCP_Port
};
var bytes__ = SCMessage.SerializeJSON_ToBytes(cMessage);
ClientStream.Write(bytes__, 0, bytes__.Length);
Task.Run(() => {
TcpClient client = null;
try {
if (!Directory.Exists(Program.SV_Directory))
{
Directory.CreateDirectory(Program.SV_Directory);
}//if
client = this.FileSendTCP.AcceptTcpClient();
var NS = client.GetStream();
var fname = $"{DateTime.Now.Ticks}_{scmessage.Message}";
FileStream fileStream = new FileStream($"{Program.SV_Directory}/{fname}", FileMode.Create, FileAccess.Write);
const long SendSize = 999;
byte[] buffer = new byte[SendSize];
byte[] messagebyffer = new byte[4] {
7, 7, 7, 7
};
NS.Write(messagebyffer, 0, messagebyffer.Length);
var fnameBytes = Encoding.UTF8.GetBytes(fname);
NS.Write(fnameBytes, 0, fnameBytes.Length);
while (true)
{
countRead = NS.Read(buffer, 0, buffer.Length);
if (countRead == 9)
{
bool error = true;
for (int j = 0; j < 9; j++)
{
if (buffer[j] != 7)
{
error = false;
return;
} //if
} //for
if (error)
{
break;
}
fileStream.Write(buffer, 0, countRead);
NS.Write(messagebyffer, 0, messagebyffer.Length);
fileStream.Close();
break;
}//if
else if (countRead < SendSize)
{
fileStream.Write(buffer, 0, countRead);
NS.Write(messagebyffer, 0, messagebyffer.Length);
fileStream.Close();
break;
}//else if
else
{
fileStream.Write(buffer, 0, countRead);
NS.Write(messagebyffer, 0, messagebyffer.Length);
} //else
} //while
SCMessage sCMessage = new SCMessage {
MessageType = SCMessageType.SendFileName, Message = fname
};
var bytes___ = SCMessage.SerializeJSON_ToBytes(sCMessage);
var sender = this.Clients.FirstOrDefault(c => c.NickName == NickName_);
if (sender != null)
{
this.SendAll_Clients(bytes___, 0, bytes___.Length, sender);
}
}//try
catch (Exception ex) {
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}//catch
if (client != null)
{
client.Close();
}
});
}//else if
else if (scmessage.MessageType == SCMessageType.SendFileName)
{
if (File.Exists($"{Program.SV_Directory}/{scmessage.Message}") == false)
{
scmessage = new SCMessage {
MessageType = SCMessageType.FileNotFound, Message = scmessage.Message
};
var bytes = SCMessage.SerializeJSON_ToBytes(scmessage);
ClientStream.Write(bytes, 0, bytes.Length);
return;
}//if
else
{
SCMessage cMessage = new SCMessage {
MessageType = SCMessageType.SendFile, UDP_Video_Port = this.FileSendTCP_Port
};
var bytes = SCMessage.SerializeJSON_ToBytes(cMessage);
ClientStream.Write(bytes, 0, bytes.Length);
}//else
Task.Run(() => {
TcpClient client = null;
try {
client = this.FileSendTCP.AcceptTcpClient();
var NS = client.GetStream();
var fname = scmessage.Message;
try {
const long SendSize = 999;
byte[] read = new byte[4];
NS.Read(read, 0, read.Length);
FileStream fileStream = new FileStream($"{Program.SV_Directory}/{fname}", FileMode.Open, FileAccess.Read);
FileInfo fileInfo = new FileInfo($"{Program.SV_Directory}/{fname}");
var countFullSend = (int)(fileInfo.Length / SendSize);
var lastBytes = (int)(fileInfo.Length - (countFullSend * SendSize));
int i = 0;
byte[] buffer = new byte[SendSize];
while (i < countFullSend)
{
fileStream.Read(buffer, 0, buffer.Length);
NS.Write(buffer, 0, buffer.Length);
NS.Read(read, 0, read.Length);
i++;
}//while
if (lastBytes == 0)
{
ClientStream.Write(new byte[9] {
7, 7, 7, 7, 7, 7, 7, 7, 7
}, 0, 9);
}//if
else
{
fileStream.Read(buffer, 0, lastBytes);
NS.Write(buffer, 0, lastBytes);
NS.Read(read, 0, read.Length);
fileStream.Close();
} //else
} //try
catch (Exception ex) {
ClientStream.Write(new byte[9] {
7, 7, 7, 7, 7, 7, 7, 7, 7
}, 0, 9);
MessageBox.Show(ex.Message, "Send File Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
} //catch
} //try
catch (Exception ex) {
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}//catch
if (client != null)
{
client.Close();
}
});
} //else if
} //while
} //try
catch {
Disconnect(Client);
return;
} //catch
});
} //while
} //try
catch (Exception ex) {
//Program.ConsoleWriteLine($"TCP Error: {ex.Message}", Program.Red, Color.Black);
} //catch
} //TCPListen
