Lite reliable UDP library for .NET and Mono. Minimal .NET version - 3.5

• Simple connection handling
• Helper classes for sending and reading messages
• Different send mechanics
• Reliable with order
• Reliable without order
• Ordered but unreliable with duplication prevention
• Simple UDP packets without order and reliability
• Packet flow control
• Automatic fragmentation of reliable packets
• Automatic MTU detection
• UDP NAT hole punching
• NTP time requests
• Packet loss and latency simulation
• IPv6 support (dual mode)
• Connection statisitcs
• Multicasting (for discovering servers in local network)
• Small CPU and RAM usage
• Unity3d support (you can use library source in project)
• Supported platforms:
• Windows/Mac/Linux
• Android
• iOS
• Universal Windows (Windows 8.1 and Windows 10 including phones)

EventBasedNetListener listener = new EventBasedNetListener();
NetServer server = new NetServer(listener, 2 /* maximum clients */, "SomeConnectionKey");
server.Start(9050 /* port */);

listener.PeerConnectedEvent += peer =>
{
    Console.WriteLine("We got connection: {0}", peer.EndPoint); // Show peer ip
    NetDataWriter writer = new NetDataWriter();                 // Create writer class
    writer.Put("Hello client!");                                // Put some string
    peer.Send(writer, SendOptions.ReliableOrdered);             // Send with reliability
};

while (!Console.KeyAvailable)
{
    server.PollEvents();
    Thread.Sleep(15);
}

server.Stop();

EventBasedNetListener listener = new EventBasedNetListener();
NetClient client = new NetClient(listener, "SomeConnectionKey");
client.Start();
client.Connect("localhost" /* host ip or name */, 9050 /* port */);
listener.NetworkReceiveEvent += (fromPeer, dataReader) =>
{
    Console.WriteLine("We got: {0}", dataReader.GetString(100 /* max length of string */));
};

while (!Console.KeyAvailable)
{
    client.PollEvents();
    Thread.Sleep(15);
}

client.Stop();

• UnconnectedMessagesEnabled
• enable messages receiving without connection. (with SendUnconnectedMessage method)
• default value: false
• NatPunchEnabled
• enable nat punch messages
• default value: false
• UpdateTime
• library logic update (and send) period in milliseconds
• default value: 100 msec. For games you can use 15 msec (66 ticks per second)
• ReliableResendTime
• time for resending lost reliable packets in milliseconds
• default value: 500 msec. Set that value to 4x-5x update time ( if UpdateTime = 15 then ReliableResendTime = 75 )
• PingInterval
• Interval for latency detection and checking connection
• default value: 1000 msec.
• DisconnectTimeout
• if client or server doesn't receive any packet from remote peer during this time then connection will be closed
• default value: 5000 msec.
• SimulatePacketLoss
• simulate packet loss by dropping random amout of packets. Works only in DEBUG mode
• default value: false
• SimulateLatency
• simulate latency by holding packets for random time
• default value: false
• SimulationPacketLossChance
• chance of packet loss when simulation enabled. value in percents.
• default value: 10 (%)
• SimulationMinLatency
• minimum simulated latency
• default value: 30 msec
• SimulationMaxLatency
• maximum simulated latency
• default value: 100 msec
• UnsyncedEvents
• Experimental feature. Events automatically will be called without PollEvents method from another thread
• default value: false
• DiscoveryEnabled
• Allows receive DiscoveryRequests
• default value: false

• ReconnectDelay
• delay betwen connection attempts
• default value: 500 msec
• MaxConnectAttempts
• maximum connection attempts before client stops and call disconnect event.
• default value: 10
• PeerToPeerMode
• allows client connect to other client
• default value: false