public void ConnectTURN(string address, bool isFirst)
{
if (address == null || address.Length == 0)
{
address = turnDefaultAddress;
}
turnHost = protocol.GenerateHostAddressAndPort(address, turnDefaultPort);
MessageSTUN message = protocol.Create <MessageSTUN>();
message.method = STUNMethod.AllocateRequest;
message.transactionID = transactionID;
//message.WriteString(STUNAttribute.ServerName, "Coturn-4.5.1.1 'dan Eider'");
message.WriteUInt(STUNAttribute.Lifetime, 300);
message.WriteUInt(STUNAttribute.RequestedTransport, (uint)(17 << 24));
message.WriteEmpty(STUNAttribute.DontFragment);
message.WriteString(STUNAttribute.Username, message.username);
message.WriteString(STUNAttribute.Realm, message.realm);
if (nonce != null)
{
message.WriteBytes(STUNAttribute.Nonce, nonce);
message.WriteRequestIntegrity();
}
Console.WriteLine("TURN Method: " + Enum.GetName(typeof(STUNMethod), message.method) + " (" + ((int)message.method).ToString("X") + ")");
Console.WriteLine("TURN Request sent to: " + turnHost.ToString());
protocol.SendSTUN(turnHost, message, 3000);
}
public string GetAttributeKeys(MessageSTUN message)
{
string attrKeys = "";
foreach (KeyValuePair <STUNAttribute, object> entry in message.response)
{
string key = Enum.GetName(typeof(STUNAttribute), entry.Key);
int id = (int)entry.Key;
if (attrKeys.Length > 0)
{
attrKeys += "\n";
}
object value = entry.Value;
string valueStr = "";
if (value is string v)
{
valueStr = v;
}
else if (value is byte[] b)
{
valueStr = NetworkSerializer.ByteArrayToHexString(b);
}
else
{
valueStr = value.ToString();
}
attrKeys += key + "(" + id.ToString("X") + ") = " + valueStr;
}
return(attrKeys);
}
public void OnError(object sender, NetworkPacket packet)
{
MessageSTUN message = (MessageSTUN)packet.messages[0];
if (message.method == STUNMethod.BindingRequest)
{
OnErrorBindingRequest();
}
}
public void ConnectSTUN(string address, bool changeIP, bool changePort)
{
stunHost = protocol.GenerateHostAddressAndPort(address, stunDefaultPort);
MessageSTUN message = protocol.Create <MessageSTUN>();
message.method = STUNMethod.BindingRequest;
message.transactionID = transactionID;
message.WriteChangeRequest(changeIP, changePort);
Console.WriteLine("Sending STUN Request to: " + stunHost.ToString());
protocol.SendSTUN(stunHost, message, NetworkConfig.SocketReliableRetryDelay);
}
public void OnBindingResponse(NetworkPacket packet, MessageSTUN message)
{
if (testId > -1)
{
Console.WriteLine("STUN Test #" + testId);
changedAddress = message.GetString(STUNAttribute.ChangedAddress);
mappedAddress = message.GetString(STUNAttribute.MappedAddress);
sourceAddress = message.GetString(STUNAttribute.SourceAddress);
CheckTests(true);
}
else
{
}
}
public void OnResponse(object sender, NetworkMessage msg)
{
NetworkPacket packet = (NetworkPacket)sender;
MessageSTUN message = (MessageSTUN)msg;
Console.WriteLine("STUN Host: " + packet.remoteEndPoint.ToString());
Console.WriteLine("STUN Response Method: " + Enum.GetName(typeof(STUNMethod), message.method));
//Console.WriteLine("STUN Response Length: " + methodLength);
Console.WriteLine("STUN Attributes: \n" + GetAttributeKeys(message));
switch (message.method)
{
case STUNMethod.BindingResponse:
OnBindingResponse(packet, message);
break;
case STUNMethod.AllocateError:
OnAllocateError(packet, message);
break;
}
}
public void OnAllocateError(NetworkPacket packet, MessageSTUN message)
{
nonce = (byte[])message.Get(STUNAttribute.Nonce);
ConnectTURN(null, false);
}
