//这必须是个同步函数，因为他将被不能定义为异步函数的地方调用。
public static void Dispose(TimeSpan timeSpan = default(TimeSpan))
{
//正常退出时，如果还有正在进行的会话，则将这些会话序列化起来。
foreach (Conversation conv in Conversations.Values)
{
//TODO 新特性 每个会话还要设置超时。而且信息是明文的。这需要认真考虑。
}
//给每个已经连接的设备发Offline消息，广播下线消息不一定正确。因为不能保证所有人都能收到广播，建立连接的方式不一定只是局域网。
foreach (var device in Devices)
{
if (device.State == DeviceState.Connected)
{
device.Disconnect();
}
device.NotifyImOffline();
}
Util.WaitAnySync(
() => Devices.Any(d => d.State != DeviceState.Connected),
TimeSpan.FromMilliseconds(300), 50);
Stop();
_instance._discoverer.Dispose();
_instance._channelManager.Dispose();
_instance._httpServer.Dispose();
_instance._httpServer = null;
}
internal TcpChannel(TcpClient client)
{
Util.CheckParam(client != null);
this._client = client;
var iep = client?.Client.RemoteEndPoint as IPEndPoint;
RemoteIP = iep?.Address.ToString();
#pragma warning disable 1998
_readTask = new TaskWrapper("Channel Listener", ReadWorker_DoWork, TaskCreationOptions.LongRunning);
#pragma warning restore 1998
_readTask.Start();
}
public void StartImpl()
{
Util.Check(LocalDevice != null, "Local Device Must be set before start");
if (_isRunning)
{
return;
}
_isRunning = true;
_discoverer.StartListen();
_discoverer.StartBroadcast();
_channelManager.Start();
Env.Logger.Log("SuperDriveCore Started", nameof(SuperDriveCore));
}
private byte[] Receive(int length, out int count)
{
Util.Check(length > 0);
count = 0;
var bytes = new byte[length];
var socket = _client.Client;
while (count < length && socket != null)
{
count += socket.Receive(bytes, count, length - count, SocketFlags.None);
if (count == 0)
{
//Thread.Sleep(200);
//throw new SocketException(); //TODO 这个地方再仔细研究一下。为什么会收到0?到底能不能重用？socket receive 可以收到0字节，error = connectionreset.
}
}
return(bytes);
}
/// <summary>
/// 如果已经知道一个设备，则更新已有设备的信息。如果是一个新设备，把它添加到列表中。
///
/// 改这个要慎重，它被LANDiscoverer调用，还被Device的Connect调用。
/// </summary>
/// <param name="device"></param>
/// <param name="needMerge"></param>
/// <returns></returns>
public static Device AddOrUpdateDevice(Device device, bool needMerge = true)
{
//检查这个Device是否已知。
if (device == null)
{
return(null);
}
Util.Check(!string.IsNullOrEmpty(device.Id));
if (device.Id == LocalDevice.Id)
{
return(null);
}
var existingDevice = Devices.FirstOrDefault(o => o.Id == device.Id);
if (existingDevice == null)
{
_instance.DevicesInternal.Add(device);
device.IsFirstSeen = true;
_instance.DeviceDiscovered?.Invoke(device);
}
else
{
//如果这个设备原来已经存在了，那么其实应该返回原来的设备，只是需要将新发现的不同的地方复制到原来的设备上
//各事件都是绑定到原来的设备的。
if (needMerge)
{
existingDevice.CopyFrom(device);
}
//不管是否Merge,都要修改IP。
existingDevice.DefaultIp = device.DefaultIp;
existingDevice.DiscoveryType = device.DiscoveryType; //是只记录一种发现方式，还是可以记录多种？
device = existingDevice;
device.IsFirstSeen = false;
}
device.LastUpdateTime = Environment.TickCount;
return(device);
}
public static Config Load(Env container, string fileName)
{
Util.Check(!string.IsNullOrEmpty(fileName), "必须指定配置文件路径。");
bool dirtdy = false;
Config config = new Config();
config.configFileName = fileName;
string json = "";
try
{
json = File.ReadAllText(fileName, Encoding.UTF8);
JsonConvert.PopulateObject(json, config);
}
catch (Exception e)
{
dirtdy = true;
}
//检查反序列化后各个成员是否正确，如果不正确，配置默认值。
//TODO DeviceInfo 序列化说明
if (config.LocalDevice == null)
{
dirtdy = true;
var device = new Device()
{
Avatar = Avatar.Facebook,
Name = Env.UserName, // Environment.UserName, //TODO
DeviceName = Env.DeviceName, // Environment.MachineName,
Version = "1.0",
DeviceType = DeviceType.PC
};
if (string.IsNullOrEmpty(device.Name) || device.Name.ToLower().Equals("somebody"))
{
device.Name = device.DeviceName;
}
config.LocalDevice = device;
}
if (string.IsNullOrEmpty(config.LocalDevice.DeviceName))
{
config.LocalDevice.DeviceName = Env.DeviceName;
}
if (config.LocalDevice.Id == null)
{
config.LocalDevice.Id = StringHelper.NewRandomGUID();
dirtdy = true;
}
if (config.LogLevel == null)
{
config.LogLevel = LogLevel.Error;
dirtdy = true;
}
if (config.TrustDevices == null)
{
config.TrustDevices = new List <Device>();
dirtdy = true;
}
if (string.IsNullOrEmpty(config.DefaultDir) || !Directory.Exists(config.DefaultDir))
{
config.DefaultDir = Env.FileSystem.DefaultDir;
dirtdy = true;
}
if (dirtdy)
{
config.Save();
}
return(config);
}
