public NetConnectionConfiguration(NetConnection forConnection)
{
if (forConnection == null)
throw new ArgumentNullException("forConnection");
m_forConnection = forConnection;
forConnection.Configuration = this;
ConnectionTimeOut = NetConnectionConfiguration.DefaultConnectionTimeOut;
AveragePingSamples = 5;
PingFrequency = NetConnectionConfiguration.DefaultPingFrequency;
m_currentOptimization = NetOptimization.EmphasizeBandwidth;
ThrottleBytesPerSecond = NetConnectionConfiguration.DefaultThrottleBytesPerSecond;
// default lag/loss/dupe settings
SimulateLagLoss = false;
LossChance = 0.05f;
LagDelayChance = 1.0f;
LagDelayMinimum = 0.1f;
LagDelayVariance = 0.05f;
DuplicatedPacketChance = 0.01f;
// reliability
OptimizeSettings(m_currentOptimization, 0.1f, true); // assume 100ms roundtrip for starters
}
public NetPing(NetConnection forConnection)
{
m_connection = forConnection;
m_samples = new float[6];
Initialize(20.0f); // 50 ms
m_lastSentPing = NetTime.Now;
}
public void AddPlayer(PlayerCarac carac, ActorRTInfo info, NetConnection co)
{
// Container creation
Player player = new Player();
player.Carac = carac;
player.Info = info;
if (co != null)
{
player.Connection = co;
co.Tag = carac.ActorID;
}
player.score = new PlayerScore();
// And finally add it to our list
List.Add(player.Carac.ActorID, player);
}
// Create a player from a partially constructed PlayerCarac and return its ID
public int CreatePlayer(PlayerCarac carac, NetConnection co)
{
carac.AssignID();
ActorRTInfo info = new ActorRTInfo();
// Set Physical infos
info.Health = carac.HealthCap = 100;
info.Mana = carac.ManaCap = 100;
info.Weapon = 1;
// Set position info
info.Position = 1.0f;
info.Velocity = 0.0f;
// And add the player
AddPlayer(carac, info, co);
return carac.ActorID;
}
internal static int SendDisconnected(NetBase netBase, string reason, NetConnection connection)
{
NetMessage bye = new NetMessage(NetMessageType.Handshake, reason.Length + 3);
bye.Write((byte)NetHandshakeType.Disconnected);
bye.Write(reason);
return netBase.SendSingleMessageAtOnce(bye, connection, connection.RemoteEndpoint);
}
internal static int SendConnectResponse(NetBase netBase, NetConnection clientConnection, IPEndPoint remoteEndpoint)
{
double now = NetTime.Now;
ushort nowEnc = NetTime.Encoded(now);
NetMessage response = new NetMessage(NetMessageType.Handshake, 3);
response.Write((byte)NetHandshakeType.ConnectResponse);
response.Write(nowEnc);
clientConnection.m_firstSentHandshake = now;
clientConnection.m_lastSentHandshake = now;
return netBase.SendSingleMessageAtOnce(response, clientConnection, remoteEndpoint);
}
public static int GetPlayerID(NetConnection co)
{
return (int)co.Tag;
}
private void SendGameState(NetConnection Conn)
{
GameState++;
NetMessage msg = new NetMessage();
string Message = "P" + Player.Location.X + "," + Player.Location.Y;
Message = Message + "P";
foreach (Zombie Zombie in Zombies)
{
Message = Message + "Z" + Zombie.Location.X + "," + Zombie.Location.Y;
}
Message = Message + "P";
foreach (Bullet Bullet in Bullets)
{
Message = Message + "B" + Bullet.Location.X + "," + Bullet.Location.Y;
}
msg.Write(Message);
//Sending the packet in Reliable is okay for this because its
//one packet, When sending lots and lots of data you need to
//set this to Unreliable. This will garentee it arrives but
//not in a sepcific order.
server.SendMessage(msg, Conn, NetChannel.Unreliable);
}
internal void Encode(NetConnection connection, NetBuffer intoBuffer)
{
if (m_type == NetMessageType.None)
m_type = NetMessageType.User;
intoBuffer.Write((byte)m_type, 3);
switch(m_type)
{
case NetMessageType.UserFragmented:
case NetMessageType.User:
case NetMessageType.Acknowledge:
case NetMessageType.AcknowledgeBitField:
intoBuffer.Write((byte)m_sequenceChannel, 5); // encode channel
intoBuffer.Write(m_sequenceNumber, 12); // encode sequence number
break;
}
int byteLen = (m_buffer == null ? 0 : m_buffer.LengthBytes);
if (m_type == NetMessageType.UserFragmented || m_type == NetMessageType.User || m_type == NetMessageType.Discovery || m_type == NetMessageType.Handshake)
intoBuffer.Write(byteLen, 12); // encode length
// encode payload
if (byteLen > 0)
intoBuffer.Write(m_buffer.Data, 0, byteLen);
return;
}
protected void HdlMsgReBroadcast(BBMessage msg, NetConnection sender)
{
int id = PlayerList.GetPlayerID(sender);
//if (msg.MsgType == BBMsgType.CHAT)
// Log.Info("Chat " + id + " : " + msg.Param1);
// Set the id of the message sender
msg.ActorInfo = new ActorRTInfo();
msg.ActorInfo.Id = id;
// And broadcast this message
Server.Broadcast(msg.GetNetMessage(), NetChannel.ReliableUnordered);
}
private void HdlMsgShoot(BBMessage msg, NetConnection sender)
{
int id = PlayerList.GetPlayerID(sender);
if (msg.MsgType == BBMsgType.ACTOR_SHOOT)
{
Log.Info("Shoot from " + id + " to " + msg.Shoot.Cible_ID);
++PList.GetPlayer(id).score.Shots;
}
else if (msg.MsgType == BBMsgType.ACTOR_SHOOT_RESPONSE)
{
Log.Info("Shoot response from " + id + " - shooter: " + msg.Resp.SenderID + ". result : " + msg.Resp.ShootResponse.ToString());
if (msg.Resp.ShootResponse == ShootResponseDesc.Response.AVOIDED || msg.Resp.ShootResponse == ShootResponseDesc.Response.COUNTERED)
{
++PList.GetPlayer(id).score.Hit;
}
else if (msg.Resp.ShootResponse == ShootResponseDesc.Response.TAKEN)
{
++PList.GetPlayer(id).score.Hit;
++PList.GetPlayer(id).score.Deaths;
++PList.GetPlayer(msg.Resp.SenderID).score.Kills;
}
}
// Set the id of the message sender
msg.ActorInfo = new ActorRTInfo();
msg.ActorInfo.Id = id;
// And broadcast this message
Server.Broadcast(msg.GetNetMessage(), NetChannel.ReliableUnordered);
}
/// <summary>
/// Remove connection from Connections list(s)
/// </summary>
internal void RemoveConnection(NetConnection conn)
{
if (conn == null)
return;
Log.Debug("Removing connection " + conn);
for(int i=0;i<Connections.Length;i++)
if (Connections[i] == conn)
Connections[i] = null;
// also remove lookup entry
int hash = conn.RemoteEndpoint.GetHashCode();
if (m_connectionsLookUpTable.ContainsKey(hash))
m_connectionsLookUpTable.Remove(hash);
}
/// <summary>
/// Broadcasts a message to all connections except specified; should NOT be used for
/// messages which uses the string table read/write methods!
/// </summary>
public int Broadcast(NetMessage msg, NetChannel channel, NetConnection except)
{
int numSentTo = 0;
bool originalSent = false;
foreach (NetConnection conn in Connections)
{
if (conn == null || conn == except || (conn.Status != NetConnectionStatus.Connected && conn.Status != NetConnectionStatus.Reconnecting))
continue;
numSentTo++;
if (!originalSent)
{
// send original
conn.SendMessage(msg, channel);
originalSent = true;
}
else
{
// send refcloned message
NetMessage clone = NetMessage.CreateReferenceClone(msg);
conn.SendMessage(clone, channel);
numSentTo++;
}
}
return numSentTo;
}
/// <summary>
/// Sends a message to a certain connection using the channel specified
/// </summary>
public bool SendMessage(NetMessage msg, NetConnection connection, NetChannel channel)
{
if (connection == null)
throw new ArgumentNullException("connection");
if (connection.Status == NetConnectionStatus.Disconnected)
{
Log.Warning("SendMessage failed - Connection is Disconnected!");
return false;
}
connection.SendMessage(msg, channel);
return true;
}
internal NetConnection AddConnection(IPEndPoint remoteEndpoint, int remoteClockOffset)
{
// find empty slot
for (int i = 0; i < Connections.Length; i++)
{
if (Connections[i] == null)
{
NetConnection conn = new NetConnection(this, remoteEndpoint);
conn.RemoteClockOffset = remoteClockOffset;
Log.Verbose("Initializing remote clock offset to " + remoteClockOffset + " ms");
conn.m_firstSentHandshake = NetTime.Now;
conn.m_lastSentHandshake = conn.m_firstSentHandshake;
int hash = remoteEndpoint.GetHashCode();
NetConnection existingConn;
if (m_connectionsLookUpTable.TryGetValue(hash, out existingConn))
{
if (existingConn.Status != NetConnectionStatus.Disconnected)
throw new NetException("Ack thphth; Connections lookup hash value taken!");
// disconnected; just remove it
RemoveConnection(existingConn);
}
Connections[i] = conn;
m_connectionsLookUpTable[hash] = conn;
conn.SetStatus(NetConnectionStatus.Connecting, "Connecting from " + remoteEndpoint);
return conn;
}
}
Log.Warning("Failed to add new connection!");
return null;
}
private NetPlayer GetPlayer(NetConnection nc)
{
for (int i = 0; i < m_players.Count; i++)
{
NetPlayer tmp = m_players[i];
if (nc == tmp.PlayerConnection)
return tmp;
}
return null;
}
/// <summary>
/// Sends the given message with the given UDP delivery type to the targetConnection
/// </summary>
/// <param name="message">The message to be send</param>
/// <param name="deliveryType">The UDP delivery type</param>
/// <param name="targetConnection">The target connection</param>
public void SendMessage(SpiderMessage message, NetChannel deliveryType, NetConnection targetConnection)
{
NetMessage msg = new NetMessage();
msg.Write(message.ToByteArray());
spiderNet.SendMessage(msg, targetConnection, deliveryType);
}
/// <summary>
/// Connects to a server
/// </summary>
public bool Connect(IPAddress address, int port, byte[] customData)
{
if (m_serverConnection != null && m_serverConnection.Status != NetConnectionStatus.Disconnected)
m_serverConnection.Disconnect("Reconnecting");
IPEndPoint remoteIP = new IPEndPoint(address, port);
m_serverConnection = new NetConnection(this, remoteIP);
string remoteHost = remoteIP.ToString();
Log.Info("Connecting to " + remoteHost);
m_serverConnection.m_firstSentHandshake = NetTime.Now;
m_serverConnection.m_lastSentHandshake = m_serverConnection.m_firstSentHandshake;
m_serverConnection.SetStatus(NetConnectionStatus.Connecting, "Connecting");
// save custom data for repeat connect requests
if (customData != null)
{
m_serverConnection.m_savedConnectCustomData = new byte[customData.Length];
Array.Copy(customData, m_serverConnection.m_savedConnectCustomData, customData.Length);
}
int bytesSent = NetHandshake.SendConnect(this, remoteIP, customData);
// account for connect packet
m_serverConnection.Statistics.PacketsSent++;
m_serverConnection.Statistics.MessagesSent++;
m_serverConnection.Statistics.BytesSent += bytesSent;
return true;
}
public void HandleMessage(BBMessage msg, NetConnection sender)
{
switch (msg.MsgType)
{
case BBMsgType.ASK_LOGIN:
HdlLogin(msg, sender);
break;
case BBMsgType.PRIVATE_MESSAGE:
case BBMsgType.PRIVATE_CONVERSATION:
case BBMsgType.JOIN_CONVERSATION:
case BBMsgType.LEAVE_CONVERSATION:
case BBMsgType.CHAT:
case BBMsgType.VDM:
case BBMsgType.PENDU:
case BBMsgType.BASH:
case BBMsgType.TYPING_MSG:
case BBMsgType.KNOCK:
HdlMsgReBroadcast(msg, sender);
break;
case BBMsgType.COFFEE:
HdlMsgReBroadcast(msg, sender);
break;
case BBMsgType.EAT:
HdlMsgReBroadcast(msg, sender);
break;
case BBMsgType.ACTOR_SHOOT:
HdlMsgShoot(msg, sender);
break;
case BBMsgType.ACTOR_SHOOT_RESPONSE:
HdlMsgShoot(msg, sender);
break;
default:
Log.Warning("Received unknown message");
break;
}
}
internal void NotifyStatusChange(NetConnection conn, NetConnectionStatus previousStatus, string reason)
{
if (StatusChanged != null)
{
NetStatusEventArgs e = new NetStatusEventArgs();
e.PreviousStatus = previousStatus;
e.Connection = conn;
e.Reason = reason;
StatusChanged(this, e);
}
}
protected void HdlLogin(BBMessage msg, NetConnection sender)
{
// Test if login is possible
if (PList.GetPlayer(msg.PlayerCarac.Nick, null) != null)
{
// No : player already exists
BBMessage msg_back = new BBMessage();
msg_back.MsgNoLogin("Player \"" + msg.PlayerCarac.Nick + "\" already exists");
Server.SendMessage(msg_back.GetNetMessage(), sender, NetChannel.ReliableUnordered);
// And close the connection
sender.Disconnect("Player \"" + msg.PlayerCarac.Nick + "\" already exists, Login refused");
}
else
{
if ((msg.Param1 == null) || (msg.Param1 != BBMessage.Version))
{
BBMessage msg_back1 = new BBMessage();
string str = msg.Param1;
if (str == null)
str = "No version";
msg_back1.MsgNoLogin("Player \"" + msg.PlayerCarac.Nick + "\" , Login refused. Version Serveur = " + BBMessage.Version + " Version Client = " + str);
Server.SendMessage(msg_back1.GetNetMessage(), sender, NetChannel.ReliableUnordered);
//sender.Disconnect("Player \"" + msg.PlayerCarac.Nick + "\" , Login refused. Version Serveur = " + BBMessage.Version + " Version Client = " + msg.Param1.ToString());
}
else
{
// Yes : Add the player to the list and send OK
// Now add the player to our list
int id = PList.CreatePlayer(msg.PlayerCarac, sender);
Log.Info("Player added : " + msg.PlayerCarac.Nick + ", " + id);
// Send OK
msg.MsgOkLogin(id);
Server.SendMessage(msg.GetNetMessage(), sender, NetChannel.ReliableUnordered);
// Send connection of other clients to our new client
IDictionaryEnumerator en = PList.GetPlayerEnum();
BBMessage msg_notice;
while (en.MoveNext())
{
if (((Player)en.Value).Carac.ActorID != id)
{
msg_notice = new BBMessage();
msg_notice.MsgAddPlayer((Player)en.Value, false);
Server.SendMessage(msg_notice.GetNetMessage(), sender, NetChannel.ReliableUnordered);
}
}
// Notify other clients
BBMessage msg_back = new BBMessage();
msg_back.MsgAddPlayer(PList.GetPlayer(id), true);
BroadcastMsgExcept(msg_back.GetNetMessage(), NetChannel.ReliableUnordered, id);
// Notify
NotifyClientConnected(id);
}
}
}
// unsequenced packets only, returns number of bytes sent
internal int SendSingleMessageAtOnce(NetMessage msg, NetConnection connection, IPEndPoint endpoint)
{
m_sendBuffer.ResetWritePointer();
msg.Encode(connection, m_sendBuffer);
if (connection != null)
return ExecuteSend(m_sendBuffer, connection, connection.RemoteEndpoint);
else
return ExecuteSend(m_sendBuffer, null, endpoint);
}
internal void NotifyClientDisconnected(NetConnection co)
{
if (ClientDisconnected != null)
{
ClientDisconnected(this, new ClientConnectEventArgs(PList.GetPlayer(PlayerList.GetPlayerID(co)).Carac));
}
}
internal static void ReplyPong(NetMessage pingMessage, NetConnection connection)
{
byte nr = pingMessage.ReadByte(6);
NetMessage pong = new NetMessage(NetMessageType.PingPong, 3);
pong.Write(true); // means pong
pong.Write(false); // means NOT optimize info
pong.Write(nr, 6);
pong.WriteSendStamp();
connection.Parent.SendSingleMessageAtOnce(pong, connection, connection.RemoteEndpoint);
}
public NetPlayer(NetConnection con, String name)
: base(name)
{
m_connection = con;
}
/// <summary>
/// Creates a network message by decoding a NetMessage
/// </summary>
/// <param name="msg">The NetMessage to be decoded</param>
public SpiderMessage(NetMessage msg)
{
//This is the exception we throw if something goes wrong
Exception e = new Exception("Could not read message");
byte[] contents = msg.ReadBytes(msg.Length);
type = (SpiderMessageType)contents[0];
int dataOffset = BitConverter.ToInt32(contents, 1);
label = Encoding.UTF8.GetString(contents, 1 + sizeof(int), dataOffset - 1 - sizeof(int));
senderIP = msg.Sender.RemoteEndpoint.Address;
connection = msg.Sender;
if (type == SpiderMessageType.Bytes) {
data = new byte[contents.Length - dataOffset];
for (int i = 0; i < contents.Length - dataOffset; i++) {
((byte[])data)[i] = contents[i + dataOffset];
}
}
else {
String tempData = Encoding.UTF8.GetString(contents, dataOffset, contents.Length - dataOffset);
switch (type) {
case SpiderMessageType.Double:
data = Convert.ToDouble(tempData);
break;
case SpiderMessageType.Int:
data = Convert.ToInt32(tempData);
break;
default:
data = tempData;
break;
}
}
}
internal int ExecuteSend(NetBuffer buffer, NetConnection connection, IPEndPoint remoteEP)
{
if (buffer.LengthBytes < 0)
{
Log.Warning("ExecuteSend passed 0 bytes to send");
return 0;
}
#if DEBUG
if (connection != null)
{
if (connection.Configuration.SimulateLagLoss && m_lagLoss != null)
return m_lagLoss.ExecuteSend(this, buffer, connection, remoteEP);
}
#endif
// encrypt
if (connection != null && connection.m_encryption.SymmetricEncryptionKeyBytes != null)
{
// Log.Debug("SEND: Encrypting packet using key: " + Convert.ToBase64String(connection.SymmetricEncryptionKey));
connection.m_encryption.EncryptSymmetric(buffer);
}
try
{
int bytesSent = m_socket.SendTo(buffer.Data, 0, buffer.LengthBytes, SocketFlags.None, remoteEP);
Debug.Assert(bytesSent == buffer.LengthBytes, "Ouch, sent partial UDP message?!");
//Log.Verbose(string.Format(CultureInfo.InvariantCulture, "Sent {0} bytes to {1}", bytesSent, remoteEP));
return bytesSent;
}
catch (SocketException sex)
{
if (sex.SocketErrorCode == SocketError.WouldBlock)
{
// send buffer overflow?
#if DEBUG
Log.Error("SocketException.WouldBlock thrown during sending; send buffer overflow? Increase buffer using NetAppConfiguration.SendBufferSize");
throw new NetException("SocketException.WouldBlock thrown during sending; send buffer overflow? Increase buffer using NetAppConfiguration.SendBufferSize", sex);
#else
// let reliability handle it, but log warning
Log.Warning("Network send buffer overflow");
#endif
}
if (sex.SocketErrorCode == SocketError.ConnectionReset ||
sex.SocketErrorCode == SocketError.ConnectionRefused ||
sex.SocketErrorCode == SocketError.ConnectionAborted)
{
Log.Warning("Remote socket forcefully closed: " + sex.SocketErrorCode);
if (connection != null)
connection.Disconnect("Socket forcefully closed: " + sex.SocketErrorCode);
return 0;
}
Log.Warning("Execute SocketException: " + sex.SocketErrorCode);
return 0;
}
}
public NetStatistics(NetConnection forConnection)
{
m_forConnection = forConnection;
Reset();
}
public int ExecuteSend(NetBase netBase, NetBuffer buffer, NetConnection connection, IPEndPoint remoteEP)
{
int len = buffer.LengthBytes;
#if DEBUG
if (connection != null)
{
NetConnectionConfiguration config = connection.Configuration;
if (config.LossChance > 0.0f && NetRandom.Default.Chance(config.LossChance))
{
//m_log.Debug("(simulating loss of sent packet)");
return len;
}
if (config.LagDelayChance > 0.0f && NetRandom.Default.Chance(config.LagDelayChance))
{
float delayAmount = config.LagDelayMinimum + (NetRandom.Default.NextFloat() * config.LagDelayVariance);
DelayedPacket pk = new DelayedPacket();
pk.Data = new byte[len];
Array.Copy(buffer.Data, pk.Data, buffer.LengthBytes);
pk.DelayAmount = delayAmount;
pk.DelayedUntil = NetTime.Now + delayAmount;
pk.RemoteEP = remoteEP;
m_delayed.Add(pk);
//m_log.Debug("(queueing packet for " + (int)(pk.DelayAmount * 1000.0f) + " ms)");
return len;
}
}
#endif
try
{
int bytesSent = netBase.m_socket.SendTo(buffer.Data, 0, len, SocketFlags.None, remoteEP);
m_log.Verbose(string.Format(CultureInfo.InvariantCulture, "Sent {0} bytes to {1}", bytesSent, remoteEP));
#if DEBUG
if (connection != null)
{
NetConnectionConfiguration config = connection.Configuration;
if (NetRandom.Default.Chance(config.DuplicatedPacketChance))
{
m_log.Debug("(simulating send packet duplication)");
netBase.m_socket.SendTo(buffer.Data, 0, buffer.LengthBytes, SocketFlags.None, remoteEP);
}
}
#endif
return bytesSent;
}
catch (SocketException sex)
{
if (sex.SocketErrorCode == SocketError.ConnectionReset ||
sex.SocketErrorCode == SocketError.ConnectionRefused ||
sex.SocketErrorCode == SocketError.ConnectionAborted)
{
m_log.Warning("Remote socket forcefully closed: " + sex.SocketErrorCode);
if (connection != null)
connection.Disconnect("Socket forcefully closed: " + sex.SocketErrorCode);
return 0;
}
m_log.Warning("Execute SocketException: " + sex.SocketErrorCode);
return 0;
}
}
public void WriteStringTable(NetConnection connection, string val)
{
if (connection == null)
throw new ArgumentNullException("connection");
connection.m_stringTable.Write(this, val);
}