/// <summary>
/// Notifies all users that a user pressed the skip button
/// </summary>
public void UpdateSkipAudio()
{
Dictionary <string, object> data = new Dictionary <string, object>();
foreach (User user in userList)
{
try
{
user.socket.Send(PacketEncoding.EncodeResponsePacket(new packets.ResponsePacket(data, PacketType.skipAudio)));
}
catch (Exception error)
{
userList.Remove(user);
Console.WriteLine(Server.GetLineAndFile() + error.Message);
}
}
}
/// <summary>
/// Sends an updated usernames list to all connected users
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void UpdateNicknames(object sender, ListChangedEventArgs e)
{
Dictionary <string, object> data = new Dictionary <string, object>()
{
{ "nicknames", userList.Select(u => u.Nickname).ToList() }
};
foreach (User user in userList)
{
try
{
user.socket.Send(PacketEncoding.EncodeResponsePacket(new packets.ResponsePacket(data, PacketType.updateNickname)));
}
catch (Exception error)
{
userList.Remove(user);
Console.WriteLine(Server.GetLineAndFile() + error.Message);
}
}
}
/// <summary>
/// Sends an updated playlist to all connected users
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void UpdatePlaylist(object sender, ListChangedEventArgs e)
{
Dictionary <string, object> data = new Dictionary <string, object>()
{
{ "playlist", videoQueue }
};
// Send new video details to all clients
foreach (User user in userList)
{
try
{
user.socket.Send(PacketEncoding.EncodeResponsePacket(new packets.ResponsePacket(data, PacketType.addToPlaylist)));
}
catch (Exception error)
{
userList.Remove(user);
Console.WriteLine(Server.GetLineAndFile() + error.Message);
}
}
}
/// <summary>
/// Runs on a seperate thread and handles client communication.
/// </summary>
/// <param name="user">The user this thread handles.</param>
public static void ClientHandler(User user)
{
// Contains the ip, port and other info about the client socket
IPEndPoint remoteIpEndPoint;
// Data packet
byte[] packetBuffer;
// Packet header byte array
byte[] packetHeaderBuffer = new byte[5];
// Length of the next packet
byte[] packetLengthBuffer = new byte[4];
// Length of the next packet (int)
int packetLen;
// Type of packet
int packetType;
// Packet stored in correct object
Packet packet;
ResponsePacket responsePacket;
remoteIpEndPoint = user.socket.RemoteEndPoint as IPEndPoint;
Console.WriteLine($"Connection from {remoteIpEndPoint.Address.MapToIPv4()}:{remoteIpEndPoint.Port}");
while (user.socket.Connected)
{
try
{
// If the byte count of the length packet is not 5, ignore this packet
if (user.socket.Receive(packetHeaderBuffer) != 5)
{
continue;
}
}
catch (SocketException e)
{
user.socket.Close();
channel.userList.Remove(user);
Console.WriteLine(GetLineAndFile() + ": " + e.Message);
continue;
}
// If the system architecture is little-endian ( little end first in array )
// reverse the byte array.
if (BitConverter.IsLittleEndian)
{
Array.Reverse(packetHeaderBuffer, 0, 4);
}
// Get packet len from first 4 bytes of packet header buffer
packetLen = BitConverter.ToInt32(packetHeaderBuffer, 0);
// Get packet type from the last byte of the array
packetType = packetHeaderBuffer[4];
// Initiate packet byte array with correct size
packetBuffer = new byte[packetLen];
// Receive data packet
user.socket.Receive(packetBuffer);
packet = PacketEncoding.DecodePacket(packetBuffer, packetType);
responsePacket = packet.Execute(user);
if (responsePacket != null)
{
try
{
user.socket.Send(PacketEncoding.EncodeResponsePacket(responsePacket));
}
catch (SocketException e)
{
user.socket.Close();
channel.userList.Remove(user);
Console.WriteLine(GetLineAndFile() + ": " + e.Message);
}
}
}
}
