/// <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);
}
}
}
