private void SendClientsHello()
{
byte[] timeBytes = BitConverter.GetBytes(DateTime.UtcNow.Ticks);
UdpMeshCommon.FlipEndian(ref timeBytes);
byte[] sendBytes = UdpMeshCommon.GetPayload(-201, timeBytes);
lock (clients)
{
foreach (UdpPeer peer in clients.Values)
{
if (peer.guid == UdpMeshCommon.GetMeshAddress())
{
continue;
}
//Send to ipv4
if (peer.usev4)
{
UdpMeshCommon.Send(clientSocketv4, sendBytes, peer.contactV4);
}
else
{
foreach (IPEndPoint iPEndPoint in peer.remoteEndpoints)
{
if (UdpMeshCommon.IsIPv4(iPEndPoint.Address))
{
string newContactString = iPEndPoint.ToString();
if (!contactedIPs.Contains(newContactString))
{
contactedIPs.Add(newContactString);
DebugLog("Attempting new contact v4: " + newContactString);
}
UdpMeshCommon.Send(clientSocketv4, sendBytes, iPEndPoint);
}
}
}
//Send to ipv6
if (peer.usev6)
{
UdpMeshCommon.Send(clientSocketv6, sendBytes, peer.contactV6);
}
else
{
foreach (IPEndPoint iPEndPoint in peer.remoteEndpoints)
{
if (UdpMeshCommon.IsIPv6(iPEndPoint.Address))
{
string newContactString = iPEndPoint.ToString();
if (!contactedIPs.Contains(newContactString))
{
contactedIPs.Add(newContactString);
DebugLog("Attempting new contact v6: " + newContactString);
}
UdpMeshCommon.Send(clientSocketv6, sendBytes, iPEndPoint);
}
}
}
}
}
}
private void ClientExternalReport(byte[] inputBytes, Guid guid, IPEndPoint iPEndPoint)
{
if (inputBytes.Length != 47 && inputBytes.Length != 59)
{
return;
}
byte type = inputBytes[40];
Guid onBehalfOf;
lock (tempGuid)
{
Array.Copy(inputBytes, 24, tempGuid, 0, 16);
onBehalfOf = new Guid(tempGuid);
}
lock (clients)
{
UdpPeer peer;
if (clients.TryGetValue(onBehalfOf, out peer))
{
IPAddress addr;
int port;
if (inputBytes.Length == 47 && type == 4)
{
lock (tempClientPort)
{
Array.Copy(inputBytes, 41, tempClientAddress4, 0, 4);
addr = new IPAddress(tempClientAddress4);
Array.Copy(inputBytes, 45, tempClientPort, 0, 2);
UdpMeshCommon.FlipEndian(ref tempClientPort);
port = BitConverter.ToUInt16(tempClientPort, 0);
}
IPEndPoint endPoint = new IPEndPoint(addr, port);
peer.AddRemoteEndpoint(endPoint);
}
if (inputBytes.Length == 59 && type == 6)
{
lock (tempClientPort)
{
Array.Copy(inputBytes, 41, tempClientAddress6, 0, 16);
addr = new IPAddress(tempClientAddress6);
Array.Copy(inputBytes, 57, tempClientPort, 0, 2);
UdpMeshCommon.FlipEndian(ref tempClientPort);
port = BitConverter.ToUInt16(tempClientPort, 0);
}
IPEndPoint endPoint = new IPEndPoint(addr, port);
peer.AddRemoteEndpoint(endPoint);
}
}
}
}
private void RelayMessage(byte[] inputBytes, int inputBytesLength, Guid client, IPEndPoint endPoint)
{
//A valid message must contain 2 headers (24 bytes) and a destination GUID (16 bytes)
if (inputBytesLength < 64)
{
return;
}
//Make sure client isn't relaying control messages
lock (tempType)
{
Array.Copy(inputBytes, 60, tempType, 0, 4);
UdpMeshCommon.FlipEndian(ref tempType);
int relayType = BitConverter.ToInt32(tempType, 0);
if (relayType < 0)
{
return;
}
}
UdpPeer peer;
lock (tempGuid)
{
Array.Copy(inputBytes, 24, tempGuid, 0, 16);
Guid destinationGuid = new Guid(tempGuid);
clients.TryGetValue(destinationGuid, out peer);
}
//Make sure client is connected
if (peer == null)
{
return;
}
if (relayHeader == null)
{
relayHeader = new byte[24];
UdpMeshCommon.GetPayload(-3, null, 0, relayHeader);
}
Array.Copy(relayHeader, 0, inputBytes, 0, 24);
if (peer.usev6)
{
UdpMeshCommon.Send(serverSocketv6, inputBytes, peer.contactV6);
return;
}
if (peer.usev4)
{
UdpMeshCommon.Send(serverSocketv4, inputBytes, peer.contactV4);
return;
}
}
private void HandleHeartBeatReply(byte[] inputData, int inputDataLength, Guid clientGuid, IPEndPoint iPEndPoint)
{
lock (tempTime)
{
if (inputDataLength != 40)
{
return;
}
UdpPeer peer = GetPeer(clientGuid);
if (peer == null)
{
return;
}
lock (tempTime)
{
Array.Copy(inputData, 24, tempTime, 0, 8);
UdpMeshCommon.FlipEndian(ref tempTime);
long sendTime = BitConverter.ToInt64(tempTime, 0);
Array.Copy(inputData, 32, tempTime, 0, 8);
UdpMeshCommon.FlipEndian(ref tempTime);
long remoteTime = BitConverter.ToInt64(tempTime, 0);
long receiveTime = DateTime.UtcNow.Ticks;
peer.lastReceiveTime = receiveTime;
if (UdpMeshCommon.IsIPv4(iPEndPoint.Address))
{
peer.latency4 = receiveTime - sendTime;
long expectedReceive = (peer.latency4 / 2) + sendTime;
peer.offset = expectedReceive - remoteTime;
}
if (UdpMeshCommon.IsIPv6(iPEndPoint.Address))
{
peer.latency6 = receiveTime - sendTime;
long expectedReceive = (peer.latency6 / 2) + sendTime;
peer.offset = expectedReceive - remoteTime;
}
}
peer.AddRemoteEndpoint(iPEndPoint);
if (UdpMeshCommon.IsIPv4(iPEndPoint.Address) && !peer.usev4)
{
peer.contactV4 = iPEndPoint;
peer.usev4 = true;
}
if (UdpMeshCommon.IsIPv6(iPEndPoint.Address) && !peer.usev6)
{
peer.contactV6 = iPEndPoint;
peer.usev6 = true;
}
}
}
private void HandleClientInfo(byte[] inputData, int inputDataLength, Guid serverGuid, IPEndPoint serverEndpoint)
{
lock (guidData)
{
int readPos = 24;
if (inputDataLength - readPos < 17)
{
return;
}
Array.Copy(inputData, readPos, guidData, 0, 16);
Guid receiveID = new Guid(guidData);
if (!clients.ContainsKey(receiveID))
{
clients.Add(receiveID, new UdpPeer(receiveID));
}
UdpPeer client = clients[receiveID];
readPos += 16;
int v4Num = inputData[readPos];
readPos++;
for (int i = 0; i < v4Num; i++)
{
Array.Copy(inputData, readPos, tempClientAddress4, 0, 4);
IPAddress ip = new IPAddress(tempClientAddress4);
readPos += 4;
Array.Copy(inputData, readPos, tempClientPort, 0, 2);
UdpMeshCommon.FlipEndian(ref tempClientPort);
int port = BitConverter.ToUInt16(tempClientPort, 0);
client.AddRemoteEndpoint(new IPEndPoint(ip, port));
readPos += 2;
}
if (inputDataLength - readPos < 1)
{
return;
}
int v6Num = inputData[readPos];
readPos++;
for (int i = 0; i < v6Num; i++)
{
Array.Copy(inputData, readPos, tempClientAddress6, 0, 16);
IPAddress ip = new IPAddress(tempClientAddress6);
readPos += 16;
Array.Copy(inputData, readPos, tempClientPort, 0, 2);
UdpMeshCommon.FlipEndian(ref tempClientPort);
int port = BitConverter.ToUInt16(tempClientPort, 0);
client.AddRemoteEndpoint(new IPEndPoint(ip, port));
readPos += 2;
}
}
}
/// <summary>
/// Send FROM the server
/// </summary>
internal byte[] GetClientEndpointMessage()
{
if (!cacheOK)
{
cacheOK = true;
List <IPEndPoint> v4end = new List <IPEndPoint>();
List <IPEndPoint> v6end = new List <IPEndPoint>();
foreach (IPEndPoint endPoint in remoteEndpoints)
{
if (endPoint.AddressFamily == AddressFamily.InterNetwork)
{
v4end.Add(endPoint);
}
if (endPoint.AddressFamily == AddressFamily.InterNetworkV6)
{
v6end.Add(endPoint);
}
}
int cachedDataBuildLength = 18 + 6 * v4end.Count + 18 * v6end.Count;
Array.Copy(guid.ToByteArray(), cachedDataBuild, 16);
cachedDataBuild[16] = (Byte)v4end.Count;
int writepos = 17;
foreach (IPEndPoint endPoint in v4end)
{
byte[] addrBytes = endPoint.Address.GetAddressBytes();
Array.Copy(addrBytes, 0, cachedDataBuild, writepos, 4);
writepos += 4;
byte[] portBytes = BitConverter.GetBytes((ushort)endPoint.Port);
UdpMeshCommon.FlipEndian(ref portBytes);
Array.Copy(portBytes, 0, cachedDataBuild, writepos, 2);
writepos += 2;
}
cachedDataBuild[writepos] = (Byte)v6end.Count;
writepos++;
foreach (IPEndPoint endPoint in v6end)
{
byte[] addrBytes = endPoint.Address.GetAddressBytes();
Array.Copy(addrBytes, 0, cachedDataBuild, writepos, 16);
writepos += 16;
byte[] portBytes = BitConverter.GetBytes((ushort)endPoint.Port);
UdpMeshCommon.FlipEndian(ref portBytes);
Array.Copy(portBytes, 0, cachedDataBuild, writepos, 2);
writepos += 2;
}
cachedDataLength = UdpMeshCommon.GetPayload(-2, cachedDataBuild, cachedDataBuildLength, cachedData);
}
return(cachedData);
}
/// <summary>
/// Sent TO the server
/// </summary>
internal byte[] GetServerEndpointMessage()
{
if (cachedData == null)
{
List <IPEndPoint> v4end = new List <IPEndPoint>();
List <IPEndPoint> v6end = new List <IPEndPoint>();
foreach (IPEndPoint endPoint in remoteEndpoints)
{
if (endPoint.AddressFamily == AddressFamily.InterNetwork)
{
v4end.Add(endPoint);
}
if (endPoint.AddressFamily == AddressFamily.InterNetworkV6)
{
v6end.Add(endPoint);
}
}
cachedData = new byte[2 + 6 * v4end.Count + 18 * v6end.Count];
cachedData[0] = (Byte)v4end.Count;
int writepos = 1;
foreach (IPEndPoint endPoint in v4end)
{
byte[] addrBytes = endPoint.Address.GetAddressBytes();
Array.Copy(addrBytes, 0, cachedData, writepos, 4);
writepos += 4;
byte[] portBytes = BitConverter.GetBytes((ushort)endPoint.Port);
UdpMeshCommon.FlipEndian(ref portBytes);
Array.Copy(portBytes, 0, cachedData, writepos, 2);
writepos += 2;
}
cachedData[writepos] = (Byte)v6end.Count;
writepos++;
foreach (IPEndPoint endPoint in v6end)
{
byte[] addrBytes = endPoint.Address.GetAddressBytes();
Array.Copy(addrBytes, 0, cachedData, writepos, 16);
writepos += 16;
byte[] portBytes = BitConverter.GetBytes((ushort)endPoint.Port);
UdpMeshCommon.FlipEndian(ref portBytes);
Array.Copy(portBytes, 0, cachedData, writepos, 2);
writepos += 2;
}
cachedData = UdpMeshCommon.GetPayload(-101, cachedData);
}
return(cachedData);
}
/// <summary>
/// Processes a received stun message.
/// </summary>
/// <returns>Stun result</returns>
/// <param name="inputData">Input raw stun message</param>
public static StunResult ProcessStun(byte[] inputData, int inputDataLength)
{
StunResult retVal = new StunResult();
if (inputDataLength < 20)
{
return(retVal);
}
byte[] messageShortBytes = new byte[2];
Array.Copy(inputData, 0, messageShortBytes, 0, 2);
UdpMeshCommon.FlipEndian(ref messageShortBytes);
int messageTypeCombined = BitConverter.ToInt16(messageShortBytes, 0);
Array.Copy(inputData, 2, messageShortBytes, 0, 2);
UdpMeshCommon.FlipEndian(ref messageShortBytes);
int messageLength = BitConverter.ToInt16(messageShortBytes, 0);
byte[] messageGuidBytes = new byte[16];
Array.Copy(inputData, 4, messageGuidBytes, 0, 16);
retVal.messageGuid = new Guid(messageGuidBytes);
int bytesToRead = messageLength;
while (bytesToRead > 0)
{
if (bytesToRead < 4)
{
return(retVal);
}
Array.Copy(inputData, inputData.Length - bytesToRead, messageShortBytes, 0, 2);
UdpMeshCommon.FlipEndian(ref messageShortBytes);
int attrType = BitConverter.ToUInt16(messageShortBytes, 0);
bytesToRead -= 2;
Array.Copy(inputData, inputData.Length - bytesToRead, messageShortBytes, 0, 2);
UdpMeshCommon.FlipEndian(ref messageShortBytes);
int attrLength = BitConverter.ToUInt16(messageShortBytes, 0);
bytesToRead -= 2;
if (attrLength > 0)
{
byte[] attrBytes = new byte[attrLength];
Array.Copy(inputData, inputData.Length - bytesToRead, attrBytes, 0, attrLength);
bytesToRead -= attrLength;
if (attrType == 1 && attrBytes[1] == 1 && attrLength == 8)
{
Array.Copy(attrBytes, 2, messageShortBytes, 0, 2);
UdpMeshCommon.FlipEndian(ref messageShortBytes);
retVal.port = BitConverter.ToUInt16(messageShortBytes, 0);
byte[] ipBytes = new byte[4];
Array.Copy(attrBytes, 4, ipBytes, 0, 4);
retVal.remoteAddr = new IPAddress(ipBytes);
retVal.success = true;
}
if (attrType == 1 && attrBytes[1] == 2 && attrLength == 20)
{
Array.Copy(attrBytes, 2, messageShortBytes, 0, 2);
UdpMeshCommon.FlipEndian(ref messageShortBytes);
retVal.port = BitConverter.ToUInt16(messageShortBytes, 0);
byte[] ipBytes = new byte[16];
Array.Copy(attrBytes, 4, ipBytes, 0, 16);
retVal.remoteAddr = new IPAddress(ipBytes);
retVal.success = true;
}
if (attrType == 32 && attrBytes[1] == 1 && attrLength == 8)
{
Array.Copy(attrBytes, 2, messageShortBytes, 0, 2);
//Xor with magic cookie
XorBytes(messageShortBytes, messageGuidBytes);
UdpMeshCommon.FlipEndian(ref messageShortBytes);
retVal.port = BitConverter.ToUInt16(messageShortBytes, 0);
byte[] ipBytes = new byte[4];
Array.Copy(attrBytes, 4, ipBytes, 0, 4);
//Xor with magic cookie
XorBytes(ipBytes, messageGuidBytes);
retVal.remoteAddr = new IPAddress(ipBytes);
retVal.success = true;
}
if (attrType == 32 && attrBytes[1] == 2 && attrLength == 20)
{
Array.Copy(attrBytes, 2, messageShortBytes, 0, 2);
//Xor with magic cookie
XorBytes(messageShortBytes, messageGuidBytes);
UdpMeshCommon.FlipEndian(ref messageShortBytes);
retVal.port = BitConverter.ToUInt16(messageShortBytes, 0);
byte[] ipBytes = new byte[16];
Array.Copy(attrBytes, 4, ipBytes, 0, 16);
//Xor with magic cookie
XorBytes(ipBytes, messageGuidBytes);
retVal.remoteAddr = new IPAddress(ipBytes);
retVal.success = true;
}
}
}
if (callback != null)
{
callback(retVal);
}
return(retVal);
}
private void HandleClientInfo(byte[] inputData, Guid serverGuid, IPEndPoint serverEndpoint)
{
int readPos = 24;
if (inputData.Length - readPos < 17)
{
return;
}
byte[] guidData = new byte[16];
Array.Copy(inputData, readPos, guidData, 0, 16);
Guid receiveID = new Guid(guidData);
if (!clients.ContainsKey(receiveID))
{
clients.Add(receiveID, new UdpPeer(receiveID));
}
UdpPeer client = clients[receiveID];
readPos += 16;
int v4Num = inputData[readPos];
readPos++;
for (int i = 0; i < v4Num; i++)
{
if (inputData.Length - readPos < 6)
{
return;
}
Array.Copy(inputData, readPos, tempClientAddress4, 0, 4);
IPAddress ip = new IPAddress(tempClientAddress4);
readPos += 4;
Array.Copy(inputData, readPos, tempClientPort, 0, 2);
UdpMeshCommon.FlipEndian(ref tempClientPort);
int port = BitConverter.ToUInt16(tempClientPort, 0);
client.AddRemoteEndpoint(new IPEndPoint(ip, port));
readPos += 2;
}
if (inputData.Length - readPos < 1)
{
return;
}
int v6Num = inputData[readPos];
readPos++;
for (int i = 0; i < v6Num; i++)
{
if (inputData.Length - readPos < 18)
{
return;
}
Array.Copy(inputData, readPos, tempClientAddress6, 0, 16);
IPAddress ip = new IPAddress(tempClientAddress6);
readPos += 16;
Array.Copy(inputData, readPos, tempClientPort, 0, 2);
UdpMeshCommon.FlipEndian(ref tempClientPort);
int port = BitConverter.ToUInt16(tempClientPort, 0);
client.AddRemoteEndpoint(new IPEndPoint(ip, port));
readPos += 2;
}
/*
* DebugLog("Updated endpoints for " + receiveID);
* foreach (IPEndPoint endPoint in client.remoteEndpoints)
* {
* DebugLog(endPoint);
* }1
* DebugLog("===");
*/
}
private void HandleHeartBeat(byte[] inputData, Guid clientGuid, IPEndPoint iPEndPoint)
{
if (inputData.Length != 32)
{
return;
}
UdpPeer peer = GetPeer(clientGuid);
if (peer == null)
{
return;
}
peer.lastReceiveTime = DateTime.UtcNow.Ticks;
byte[] replyBytes = new byte[16];
byte[] currentTime = BitConverter.GetBytes(DateTime.UtcNow.Ticks);
UdpMeshCommon.FlipEndian(ref currentTime);
Array.Copy(inputData, 24, replyBytes, 0, 8);
Array.Copy(currentTime, 0, replyBytes, 8, 8);
byte[] replyMessage = UdpMeshCommon.GetPayload(-202, replyBytes);
if (UdpMeshCommon.IsIPv4(iPEndPoint.Address))
{
UdpMeshCommon.Send(clientSocketv4, replyMessage, iPEndPoint);
if (!peer.usev4)
{
byte[] notifyServerOfEndpoint = new byte[23];
Array.Copy(clientGuid.ToByteArray(), 0, notifyServerOfEndpoint, 0, 16);
notifyServerOfEndpoint[16] = 4;
byte[] endpointBytes = iPEndPoint.Address.GetAddressBytes();
if (endpointBytes.Length == 4)
{
Array.Copy(endpointBytes, 0, notifyServerOfEndpoint, 17, 4);
}
if (endpointBytes.Length == 16)
{
Array.Copy(endpointBytes, 12, notifyServerOfEndpoint, 17, 4);
}
byte[] portBytes = BitConverter.GetBytes((UInt16)iPEndPoint.Port);
UdpMeshCommon.FlipEndian(ref portBytes);
Array.Copy(portBytes, 0, notifyServerOfEndpoint, 21, 2);
byte[] notifyServerOfEndpointPayload = UdpMeshCommon.GetPayload(-103, notifyServerOfEndpoint);
UdpMeshCommon.Send(clientSocketv4, notifyServerOfEndpointPayload, serverEndpointv4);
}
}
if (UdpMeshCommon.IsIPv6(iPEndPoint.Address))
{
UdpMeshCommon.Send(clientSocketv6, replyMessage, iPEndPoint);
if (!peer.usev6)
{
byte[] notifyServerOfEndpoint = new byte[35];
Array.Copy(clientGuid.ToByteArray(), 0, notifyServerOfEndpoint, 0, 16);
notifyServerOfEndpoint[16] = 6;
byte[] endpointBytes = iPEndPoint.Address.GetAddressBytes();
Array.Copy(endpointBytes, 0, notifyServerOfEndpoint, 17, 16);
byte[] portBytes = BitConverter.GetBytes((UInt16)iPEndPoint.Port);
UdpMeshCommon.FlipEndian(ref portBytes);
Array.Copy(portBytes, 0, notifyServerOfEndpoint, 33, 2);
byte[] notifyServerOfEndpointPayload = UdpMeshCommon.GetPayload(-103, notifyServerOfEndpoint);
UdpMeshCommon.Send(clientSocketv6, notifyServerOfEndpointPayload, serverEndpointv6);
}
}
}
private void ClientReport(byte[] inputData, Guid guid, IPEndPoint endpoint)
{
List <IPEndPoint> newEndpoints = new List <IPEndPoint>();
lock (tempClientPort)
{
int readPos = 24;
if (inputData.Length - readPos < 1)
{
return;
}
int v4Num = inputData[readPos];
readPos++;
for (int i = 0; i < v4Num; i++)
{
if (inputData.Length - readPos < 6)
{
return;
}
Array.Copy(inputData, readPos, tempClientAddress4, 0, 4);
IPAddress ip = new IPAddress(tempClientAddress4);
readPos += 4;
Array.Copy(inputData, readPos, tempClientPort, 0, 2);
UdpMeshCommon.FlipEndian(ref tempClientPort);
int port = BitConverter.ToUInt16(tempClientPort, 0);
newEndpoints.Add(new IPEndPoint(ip, port));
readPos += 2;
}
if (inputData.Length - readPos < 1)
{
return;
}
int v6Num = inputData[readPos];
readPos++;
for (int i = 0; i < v6Num; i++)
{
if (inputData.Length - readPos < 18)
{
return;
}
Array.Copy(inputData, readPos, tempClientAddress6, 0, 16);
IPAddress ip = new IPAddress(tempClientAddress6);
readPos += 16;
Array.Copy(inputData, readPos, tempClientPort, 0, 2);
UdpMeshCommon.FlipEndian(ref tempClientPort);
int port = BitConverter.ToUInt16(tempClientPort, 0);
newEndpoints.Add(new IPEndPoint(ip, port));
readPos += 2;
}
lock (clients)
{
if (!clients.ContainsKey(guid))
{
clients.Add(guid, new UdpPeer(guid));
connectedGuidBytes = null;
}
UdpPeer client = clients[guid];
if (UdpMeshCommon.IsIPv4(endpoint.Address))
{
client.usev4 = true;
client.contactV4 = endpoint;
}
if (UdpMeshCommon.IsIPv6(endpoint.Address))
{
client.usev6 = true;
client.contactV6 = endpoint;
}
client.AddRemoteEndpoint(endpoint);
foreach (IPEndPoint tempEndPoint in newEndpoints)
{
client.AddRemoteEndpoint(tempEndPoint);
}
client.lastReceiveTime = DateTime.UtcNow.Ticks;
}
}
}
private void HandleHeartBeat(byte[] inputData, int inputDataLength, Guid clientGuid, IPEndPoint iPEndPoint)
{
lock (buildBuffer)
{
lock (sendBuffer)
{
if (inputDataLength != 32)
{
return;
}
UdpPeer peer = GetPeer(clientGuid);
if (peer == null)
{
return;
}
peer.lastReceiveTime = DateTime.UtcNow.Ticks;
byte[] currentTime = BitConverter.GetBytes(DateTime.UtcNow.Ticks);
UdpMeshCommon.FlipEndian(ref currentTime);
Array.Copy(inputData, 24, heartbeatReplyBytes, 0, 8);
Array.Copy(currentTime, 0, heartbeatReplyBytes, 8, 8);
int length = UdpMeshCommon.GetPayload(-202, heartbeatReplyBytes, heartbeatReplyBytes.Length, sendBuffer);
if (UdpMeshCommon.IsIPv4(iPEndPoint.Address))
{
UdpMeshCommon.Send(clientSocketv4, sendBuffer, length, iPEndPoint);
}
if (UdpMeshCommon.IsIPv6(iPEndPoint.Address))
{
UdpMeshCommon.Send(clientSocketv6, sendBuffer, length, iPEndPoint);
}
if (UdpMeshCommon.IsIPv4(iPEndPoint.Address))
{
if (!peer.usev4)
{
Array.Copy(clientGuid.ToByteArray(), 0, buildBuffer, 0, 16);
buildBuffer[16] = 4;
byte[] endpointBytes = iPEndPoint.Address.GetAddressBytes();
if (endpointBytes.Length == 4)
{
Array.Copy(endpointBytes, 0, buildBuffer, 17, 4);
}
if (endpointBytes.Length == 16)
{
Array.Copy(endpointBytes, 12, buildBuffer, 17, 4);
}
byte[] portBytes = BitConverter.GetBytes((UInt16)iPEndPoint.Port);
UdpMeshCommon.FlipEndian(ref portBytes);
Array.Copy(portBytes, 0, buildBuffer, 21, 2);
int sendLength = UdpMeshCommon.GetPayload(-103, buildBuffer, 25, sendBuffer);
UdpMeshCommon.Send(clientSocketv4, sendBuffer, sendLength, serverEndpointv4);
}
}
if (UdpMeshCommon.IsIPv6(iPEndPoint.Address))
{
if (!peer.usev6)
{
Array.Copy(clientGuid.ToByteArray(), 0, buildBuffer, 0, 16);
buildBuffer[16] = 6;
byte[] endpointBytes = iPEndPoint.Address.GetAddressBytes();
Array.Copy(endpointBytes, 0, buildBuffer, 17, 16);
byte[] portBytes = BitConverter.GetBytes((UInt16)iPEndPoint.Port);
UdpMeshCommon.FlipEndian(ref portBytes);
Array.Copy(portBytes, 0, buildBuffer, 33, 2);
int sendLength = UdpMeshCommon.GetPayload(-103, buildBuffer, 35, sendBuffer);
UdpMeshCommon.Send(clientSocketv6, sendBuffer, sendLength, serverEndpointv6);
}
}
}
}
}
