/// <see cref="INetwork.JoinLobby"/>
public ILobbyClient JoinLobby(LobbyInfo info, ILobbyListener listener)
{
if (this.closed)
{
throw new ObjectDisposedException("Network");
}
if (listener == null)
{
throw new ArgumentNullException("listener");
}
if (info == null)
{
throw new ArgumentNullException("info");
}
if (this.localLobby == null && this.remoteLobby == null)
{
LobbyClient lobbyClient = CreateRemoteLobby_i(info, listener);
lobbyClient.Disposed += this.LobbyDisposedHandler;
this.remoteLobby = lobbyClient;
return(this.remoteLobby);
}
else
{
return(null);
}
}
/// <summary>
/// The starting function of the announcer thread.
/// </summary>
private void AnnounceProc()
{
while (!this.announcementFinished.WaitOne(NetworkingSystemConstants.ANNOUNCEMENT_FREQUENCY))
{
LobbyInfo lobbyInfo =
new LobbyInfo(this.announcedLobby.Id, "", this.announcedLobby.PortNum);
if (null != this.customDataProvider)
{
lobbyInfo.CustomData = this.customDataProvider.CustomData;
}
RCPackage lobbyInfoPackage = lobbyInfo.Package;
BroadcastPackage_i(lobbyInfoPackage);
}
/// Announce finished so we broadcast a FORMAT_LOBBY_INFO_VANISHED message.
RCPackage lobbyVanishedPackage = RCPackage.CreateCustomDataPackage(Network.FORMAT_LOBBY_INFO_VANISHED);
lobbyVanishedPackage.WriteString(0, this.announcedLobby.Id.ToString());
for (int i = 0; i < NetworkingSystemConstants.ANNOUNCEMENT_BROADCAST_MULTIPLICITY; i++)
{
/// Broadcast more than once because of possible package lost on UDP.
BroadcastPackage_i(lobbyVanishedPackage);
}
}
/// <see cref="Network.CreateRemoteLobby_i"/>
protected override LobbyClient CreateRemoteLobby_i(LobbyInfo info, ILobbyListener listener)
{
try
{
LobbyClient client = new LANLobbyClient(info, listener);
return(client);
}
catch (Exception ex)
{
TraceManager.WriteExceptionAllTrace(ex, false);
return(null);
}
}
/// <summary>
/// Constructs a LobbyInfo object from an RCPackage.
/// </summary>
/// <param name="source">The package that contains the LobbyInfo data.</param>
/// <returns>The contructed LobbyInfo or null if no LobbyInfo can be constructed from the given RCPackage.</returns>
public static LobbyInfo FromRCPackage(RCPackage source)
{
if (null != source && source.IsCommitted && source.PackageFormat.ID == Network.FORMAT_LOBBY_INFO)
{
string idStr = source.ReadString(0);
Guid id;
if (!Guid.TryParse(idStr, out id))
{
TraceManager.WriteAllTrace(string.Format("Unable to parse {0} as a GUID!", idStr), NetworkingSystemTraceFilters.INFO);
return(null);
}
byte[] customDataBytes = source.ReadByteArray(3);
int parsedBytes = 0;
RCPackage customData = null;
if (customDataBytes.Length > 0)
{
RCPackage.Parse(customDataBytes, 0, customDataBytes.Length, out parsedBytes);
}
if (customDataBytes.Length == 0 ||
(null != customData && customData.IsCommitted && parsedBytes == customDataBytes.Length))
{
LobbyInfo retInfo = new LobbyInfo(id, /// ID
source.ReadString(1), /// IPAddress
source.ReadInt(2), /// PortNumber
(customDataBytes.Length != 0) ? customData : null /// Custom infos about the lobby
);
return(retInfo);
}
else
{
TraceManager.WriteAllTrace("LobbyInfo.FromRCPackage failed: unexpected CustomData package format!", NetworkingSystemTraceFilters.INFO);
return(null);
}
}
else
{
TraceManager.WriteAllTrace("LobbyInfo.FromRCPackage failed: unexpected package format!", NetworkingSystemTraceFilters.INFO);
return(null);
}
}
/// <summary>
/// Constructs a LobbyClient object.
/// </summary>
public LobbyClient(LobbyInfo info, ILobbyListener listener)
{
this.id = info.ID;
this.listener = listener;
this.memberCount = -1;
this.clientID = -1;
this.outgoingPackages = new List <RCPackage>();
this.outgoingPackageTargets = new List <int[]>();
IPAddress ipAddress;
if (!IPAddress.TryParse(info.IPAddress, out ipAddress))
{
throw new NetworkingSystemException("Unable to parse server IP address: " + info.IPAddress);
}
this.serverEndpoint = new IPEndPoint(ipAddress, info.PortNumber);
this.connection = CreateConnection_i(this.serverEndpoint);
this.stopConnectionManagerThread = new ManualResetEvent(false);
this.connectionManagerThread = new RCThread(this.ConnectionManagerProc, "Networking");
this.connectionManagerThread.Start();
}
/// <summary>
/// The starting function of the searcher thread.
/// </summary>
private void SearchProc()
{
while (!this.searchFinished.WaitOne(NetworkingSystemConstants.LOBBY_INFO_RECEIVE_FREQUENCY))
{
/// Read an RCPackage from the network.
IPAddress sender = IPAddress.Any;
RCPackage announcementPackage = ReadPackage_i(ref sender);
while (announcementPackage != null)
{
if (announcementPackage.PackageType == RCPackageType.CUSTOM_DATA_PACKAGE)
{
if (announcementPackage.PackageFormat.ID == Network.FORMAT_LOBBY_INFO)
{
/// Try to create a LobbyInfo object from the package.
LobbyInfo info = LobbyInfo.FromRCPackage(announcementPackage);
if (info != null && info.ID != Guid.Empty)
{
info.IPAddress = sender.ToString();
/// Search in the local registry.
if (this.collectedInfos.ContainsKey(info.ID) && this.timers.ContainsKey(info.ID))
{
/// If found we check if it has been changed since last check.
bool changed = this.collectedInfos[info.ID].IPAddress.CompareTo(info.IPAddress) != 0 ||
this.collectedInfos[info.ID].PortNumber != info.PortNumber;
/// Check for differences in the custom data.
if (info.CustomData != null)
{
if (this.collectedInfos[info.ID].CustomData != null)
{
if (!RCPackage.IsEqual(this.collectedInfos[info.ID].CustomData, info.CustomData))
{
changed = true;
}
}
else
{
/// Custom data appeared.
changed = true;
}
}
else
{
if (this.collectedInfos[info.ID].CustomData != null)
{
/// Custom data disappeared.
changed = true;
}
}
this.collectedInfos[info.ID] = info; /// save the info
this.timers[info.ID].Restart(); /// restarts it's timer
/// notify the listener that the lobby has changed
if (changed)
{
this.locator.LobbyChanged(info);
}
}
else
{
/// If not found...
this.collectedInfos.Add(info.ID, info); /// save the info
this.timers.Add(info.ID, new Stopwatch()); /// create timer for the info
this.timers[info.ID].Start(); /// start timer for the info
/// notify the listener that a new lobby has been found
this.locator.LobbyFound(info);
}
}
}
else if (announcementPackage.PackageFormat.ID == Network.FORMAT_LOBBY_INFO_VANISHED)
{
string idStr = announcementPackage.ReadString(0);
Guid id;
if (Guid.TryParse(idStr, out id) && id != Guid.Empty)
{
/// Search in the local registry.
if (this.collectedInfos.ContainsKey(id) && this.timers.ContainsKey(id))
{
LobbyInfo vanishedLobby = this.collectedInfos[id];
this.collectedInfos.Remove(id);
this.timers.Remove(id);
this.locator.LobbyVanished(vanishedLobby);
}
}
}
}
announcementPackage = ReadPackage_i(ref sender);
} /// end-while
/// Check the timers.
List <Guid> removedKeys = new List <Guid>();
foreach (KeyValuePair <Guid, Stopwatch> timer in this.timers)
{
if (timer.Value.ElapsedMilliseconds > NetworkingSystemConstants.LOBBY_INFO_TIMEOUT)
{
removedKeys.Add(timer.Key);
}
}
foreach (Guid key in removedKeys)
{
LobbyInfo vanishedLobby = this.collectedInfos[key];
this.collectedInfos.Remove(key);
this.timers.Remove(key);
this.locator.LobbyVanished(vanishedLobby);
}
}
}
/// <summary> /// Internal function to create a remote lobby. /// </summary> protected abstract LobbyClient CreateRemoteLobby_i(LobbyInfo info, ILobbyListener listener);