/// <summary>
/// A method to find all of the local UDP servers and clients on the network
/// </summary>
public static void RefreshLocalUdpListings(ushort portNumber = DEFAULT_PORT, int responseBuffer = 1000)
{
// Initialize the list to hold all of the local network endpoints that respond to the request
if (LocalEndpoints == null)
{
LocalEndpoints = new List <BroadcastEndpoints>();
}
// Make sure to clear out the existing endpoints
lock (LocalEndpoints)
{
LocalEndpoints.Clear();
}
// Create a client to write on the network and discover other clients and servers
localListingsClient = new CachedUdpClient(19375);
localListingsClient.EnableBroadcast = true;
Task.Queue(() => { CloseLocalListingsClient(); }, responseBuffer);
Task.Queue(() =>
{
IPEndPoint groupEp = default(IPEndPoint);
string endpoint = string.Empty;
localListingsClient.Send(new byte[] { BROADCAST_LISTING_REQUEST_1, BROADCAST_LISTING_REQUEST_2, BROADCAST_LISTING_REQUEST_3 }, 3, new IPEndPoint(IPAddress.Parse("255.255.255.255"), portNumber));
try
{
while (localListingsClient != null && !EndingSession)
{
var data = localListingsClient.Receive(ref groupEp, ref endpoint);
if (data.Size != 1)
{
continue;
}
string[] parts = endpoint.Split('+');
string address = parts[0];
ushort port = ushort.Parse(parts[1]);
if (data[0] == SERVER_BROADCAST_CODE)
{
var ep = new BroadcastEndpoints(address, port, true);
LocalEndpoints.Add(ep);
if (localServerLocated != null)
{
localServerLocated(ep);
}
}
else if (data[0] == CLIENT_BROADCAST_CODE)
{
LocalEndpoints.Add(new BroadcastEndpoints(address, port, false));
}
}
}
catch { }
});
}
public static void SetupLocalUdpListings()
{
if (LocalConnections == null)
{
LocalConnections = new List <BroadcastEndpoints>();
}
lock (LocalConnections)
{
LocalConnections.Clear();
}
localListingsClient = new CachedUdpClient(19375);
localListingsClient.EnableBroadcast = true;
Task.Queue(() => { CloseLocalListingsClient(); }, 1000);
Task.Queue(() =>
{
IPEndPoint groupEp = default(IPEndPoint);
string endpoint = string.Empty;
localListingsClient.Send(new byte[] { BROADCAST_LISTING_REQUEST_1, BROADCAST_LISTING_REQUEST_2, BROADCAST_LISTING_REQUEST_3 }, 3, new IPEndPoint(IPAddress.Parse("255.255.255.255"), DEFAULT_PORT));
try
{
while (localListingsClient != null && !ExitingApplication)
{
var data = localListingsClient.Receive(ref groupEp, ref endpoint);
if (data.Size != 1)
{
continue;
}
string[] parts = endpoint.Split('+');
string address = parts[0];
ushort port = ushort.Parse(parts[1]);
if (data[0] == SERVER_BROADCAST_CODE)
{
LocalConnections.Add(new BroadcastEndpoints(address, port, true));
}
else if (data[0] == CLIENT_BROADCAST_CODE)
{
LocalConnections.Add(new BroadcastEndpoints(address, port, false));
}
}
}
catch { }
});
}
private static void SendFindLocalNetworkBroadcast(CachedUdpClient localListingsClient, ushort portNumber)
{
localListingsClient.Send(new byte[] { BROADCAST_LISTING_REQUEST_1, BROADCAST_LISTING_REQUEST_2, BROADCAST_LISTING_REQUEST_3 }, 3,
new IPEndPoint(IPAddress.Parse("255.255.255.255"), portNumber));
try
{
while (localListingsClient != null && !EndingSession)
{
ReceiveFromFindLocalNetworkBroadcast(localListingsClient);
}
}
catch { }
}
/// <summary>
/// A method to find all of the local UDP servers and clients on the network
/// </summary>
public static void RefreshLocalUdpListings(ushort portNumber = DEFAULT_PORT, int responseBuffer = 1000)
{
lock (localListingsClientList)
{
foreach (CachedUdpClient cachedUdpClient in localListingsClientList)
{
cachedUdpClient.Client.Close();
}
localListingsClientList.Clear();
}
// Initialize the list to hold all of the local network endpoints that respond to the request
if (LocalEndpoints == null)
{
LocalEndpoints = new List <BroadcastEndpoints>();
}
// Make sure to clear out the existing endpoints
lock (LocalEndpoints)
{
LocalEndpoints.Clear();
}
foreach (IPAddress ipAddress in GetLocalIPs())
{
// Create a client to write on the network and discover other clients and servers
CachedUdpClient localListingsClient = new CachedUdpClient(new IPEndPoint(ipAddress, portNumber));
localListingsClient.createTime = DateTime.Now;
localListingsClient.EnableBroadcast = true;
lock (localListingsClientList)
{
localListingsClientList.Add(localListingsClient);
}
Task.Queue(() => { CloseLocalListingsClient(); }, responseBuffer);
Task.Queue(() =>
{
IPEndPoint groupEp = default(IPEndPoint);
string endpoint = string.Empty;
localListingsClient.Send(new byte[] { BROADCAST_LISTING_REQUEST_1, BROADCAST_LISTING_REQUEST_2, BROADCAST_LISTING_REQUEST_3 }, 3,
new IPEndPoint(IPAddress.Parse("255.255.255.255"), portNumber));
try
{
while (localListingsClient != null && !EndingSession)
{
localListingsClient.ReceiveLanDiscovery(ref groupEp, ref endpoint, ipAddress.ToString(), Convert.ToInt32(portNumber));
}
}
catch (ObjectDisposedException disposedEx)
{
//BeardedManStudios.Forge.Logging.BMSLog.Log("Socket is disposed already.");
//lastDebugMessage = "Socket is disposed";
}
catch (Exception e)
{
//BeardedManStudios.Forge.Logging.BMSLog.Log("Exception Caught message: " + e.ToString());
//lastDebugMessage = e.ToString();
}
});
}
}
/// <summary>
/// This will connect a UDP client to a given UDP server
/// </summary>
/// <param name="host">The server's host address on the network</param>
/// <param name="port">The port that the server is hosting on</param>
/// <param name="natHost">The NAT server host address, if blank NAT will be skipped</param>
/// <param name="natPort">The port that the NAT server is hosting on</param>
/// <param name="pendCreates">Immidiately set the NetWorker::PendCreates to true</param>
public void Connect(string host, ushort port = DEFAULT_PORT, string natHost = "", ushort natPort = NatHolePunch.DEFAULT_NAT_SERVER_PORT, bool pendCreates = false, ushort overrideBindingPort = DEFAULT_PORT + 1)
{
if (Disposed)
{
throw new ObjectDisposedException("UDPClient", "This object has been disposed and can not be used to connect, please use a new UDPClient");
}
// By default pending creates should be true and flushed when ready
if (!pendCreates)
{
PendCreates = true;
}
try
{
ushort clientPort = overrideBindingPort;
// Make sure not to listen on the same port as the server for local networks
if (clientPort == port)
{
clientPort++;
}
for (; ; clientPort++)
{
try
{
Client = new CachedUdpClient(clientPort);
break;
}
catch
{
if (port == 0)
{
throw new BaseNetworkException("There were no ports available starting from port " + port);
}
}
}
Client.EnableBroadcast = true;
// If the server is behind a NAT, request for the port punch by the nat server
if (!string.IsNullOrEmpty(natHost))
{
nat.Connect(host, port, clientPort, natHost, natPort);
}
// Do any generic initialization in result of the successful bind
OnBindSuccessful();
// Get a random hash key that needs to be used for validating that the server was connected to
headerHash = Websockets.HeaderHashKey();
// This is a typical Websockets accept header to be validated
byte[] connectHeader = Websockets.ConnectionHeader(headerHash, port);
try
{
// Setup the identity of the server as a player
server = new NetworkingPlayer(0, host, true, ResolveHost(host, port), this);
}
catch (ArgumentException)
{
if (connectAttemptFailed != null)
{
connectAttemptFailed(this);
}
throw;
}
// Create the thread that will be listening for new data from connected clients and start its execution
Task.Queue(ReadNetwork);
//Let myself know I connected successfully
OnPlayerConnected(server);
// Set myself as a connected client
server.Connected = true;
//Set the port
SetPort(clientPort);
int connectCounter = 0;
Task.Queue(() =>
{
do
{
// Send the accept headers to the server to validate
Client.Send(connectHeader, connectHeader.Length, Server.IPEndPointHandle);
Thread.Sleep(3000);
} while (!headerExchanged && IsBound && ++connectCounter < CONNECT_TRIES);
if (connectCounter >= CONNECT_TRIES)
{
if (connectAttemptFailed != null)
{
connectAttemptFailed(this);
}
}
});
}
catch (Exception e)
{
Logging.BMSLog.LogException(e);
// Do any generic initialization in result of the binding failure
OnBindFailure();
throw new FailedBindingException("Failed to bind to host/port, see inner exception", e);
}
}
public void Connect(string host, ushort port = DEFAULT_PORT, string natHost = "", ushort natPort = NatHolePunch.DEFAULT_NAT_SERVER_PORT, bool isSpecial = false)
{
// By default pending creates should be true and flushed when ready
if (!isSpecial)
{
PendCreates = true;
}
try
{
// TODO: Remove + 1, it is for linux tests
ushort clientPort = port; //(ushort)(port + 1);
for (; ; clientPort++)
{
try
{
Client = new CachedUdpClient(clientPort);
break;
}
catch
{
if (port == 0)
{
throw new BaseNetworkException("There were no ports available starting from port " + port);
}
}
}
Client.EnableBroadcast = true;
// If the server is behind a NAT, request for the port punch by the nat server
if (!string.IsNullOrEmpty(natHost))
{
nat.Connect(host, port, clientPort, natHost, natPort);
}
// Do any generic initialization in result of the successful bind
OnBindSuccessful();
// Get a random hash key that needs to be used for validating that the server was connected to
headerHash = Websockets.HeaderHashKey();
// This is a typical Websockets accept header to be validated
byte[] connectHeader = Websockets.ConnectionHeader(headerHash, port);
// Setup the identity of the server as a player
server = new NetworkingPlayer(0, host, true, ResolveHost(host, port), this);
// Create the thread that will be listening for new data from connected clients and start its execution
Task.Queue(ReadNetwork);
//Let myself know I connected successfully
OnPlayerConnected(server);
// Set myself as a connected client
server.Connected = true;
//Set the port
SetPort(clientPort);
Task.Queue(() =>
{
do
{
// Send the accept headers to the server to validate
Client.Send(connectHeader, connectHeader.Length, Server.IPEndPointHandle);
Thread.Sleep(3000);
} while (!headerExchanged && IsBound);
});
}
catch (Exception e)
{
Logging.BMSLog.LogException(e);
// Do any generic initialization in result of the binding failure
OnBindFailure();
throw new FailedBindingException("Failed to bind to host/port, see inner exception", e);
}
}