/// <inheritdoc cref="DotNetty.Transport.Channels.SimpleChannelInboundHandler{I}"/>>
protected override void ChannelRead0(IChannelHandlerContext ctx, ProtocolMessage msg)
{
if (_authenticationStrategy.Authenticate(msg.PeerId))
{
ctx.FireChannelRead(msg);
}
else
{
ctx?.CloseAsync().ConfigureAwait(false);
throw new AuthenticationException("Authentication Attempt Failed");
}
}
void ContinueScenarioExecution(IChannelHandlerContext context)
{
if (!this.testScenario.MoveNext())
{
context.CloseAsync()
.ContinueWith(
t => this.completion.TrySetException(t.Exception),
TaskContinuationOptions.OnlyOnFaulted | TaskContinuationOptions.ExecuteSynchronously);
this.completion.TryComplete();
return;
}
foreach (object message in this.testScenario.Current.SendMessages)
{
context.WriteAsync(message)
.ContinueWith(
t => this.completion.TrySetException(t.Exception),
TaskContinuationOptions.OnlyOnFaulted | TaskContinuationOptions.ExecuteSynchronously);
}
context.Flush();
}
void ContinueScenarioExecution(IChannelHandlerContext context)
{
if (!this.testScenario.MoveNext())
{
context.CloseAsync()
.ContinueWith(
t => this.completion.TrySetException(t.Exception),
TaskContinuationOptions.OnlyOnFaulted | TaskContinuationOptions.ExecuteSynchronously);
this.completion.TryComplete();
return;
}
TestScenarioStep currentStep = this.testScenario.Current;
if (currentStep.Delay > TimeSpan.Zero)
{
context.Channel.EventLoop.Schedule((ctx, state) => this.ExecuteStep((IChannelHandlerContext)ctx, (TestScenarioStep)state), context, currentStep, currentStep.Delay);
}
else
{
this.ExecuteStep(context, currentStep);
}
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
if (!(exception is ObjectDisposedException))
log.Warn($"Exception in NettyServerHandler {context.Channel.Id.AsShortText()}: {exception.Message}");
context.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
Console.WriteLine("Exception: " + exception);
context.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
base.ExceptionCaught(context, exception);
s_logger.LogError($"{exception}");
context.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception e)
{
LOGGER.Error(e, "编码消息出现错误 {}", e.Message);
context.CloseAsync();
}
/// <summary>
/// 异常
/// </summary>
/// <param name="context"></param>
/// <param name="exception"></param>
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
ClientEventHandler.RecordLogEvent?.Invoke(false, $"Exception: {exception.Message}");
ClientEventHandler.IsConnect = false;
context.CloseAsync();
}
public static void NotifyHandshakeFailure(IChannelHandlerContext ctx, Exception cause)
{
// We have may haven written some parts of data before an exception was thrown so ensure we always flush.
// See https://github.com/netty/netty/issues/3900#issuecomment-172481830
ctx.Flush();
ctx.FireUserEventTriggered(new TlsHandshakeCompletionEvent(cause));
ctx.CloseAsync();
}
public override void ChannelRead(IChannelHandlerContext context, object message)
{
_event.Signal();
context.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
// Close the connection when an exception is raised.
Console.WriteLine($"{exception}");
context.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
_logger.ServerHandlerCaughtException(exception);
context.CloseAsync();
}
public Task CloseAsync(IChannelHandlerContext context) => context.CloseAsync();
public override void ChannelReadComplete(IChannelHandlerContext context) => context.Flush(); public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
Console.WriteLine("Exception: " + exception);
context.CloseAsync();
}
// Catches inbound message exceptions
public override void ExceptionCaught(IChannelHandlerContext contex, Exception e)
{
Logger.Error(e);
contex.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext ctx, Exception cause)
{
Console.WriteLine(cause);
ctx.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
base.ExceptionCaught(context, exception);
NotifyListener(new Disassociated(DisassociateInfo.Unknown));
context.CloseAsync(); // close the channel
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
Logger.Log(exception, GetType(), ErrorLevel.Error);
context.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
//客户端主动断开需要应答，否则socket变成CLOSE_WAIT状态导致socket资源耗尽
context.CloseAsync();
_logger.LogWarning(exception, $"与服务器：{context.Channel.RemoteAddress}通信时发送了错误。");
}
protected override void ChannelRead0(IChannelHandlerContext ctx, Packet msg)
{
if (_authorized)
{
ctx.FireChannelRead(new UserPacket(msg, _auth));
}
else if (!_checkAuth)
{
switch ((string)msg.CommandKey)
{
case "authByDeveloper":
_authTask?.Dispose();
_authTask = Task.Factory.StartNew(() =>
{
var authTask = _authManager.GetAuthByDevelopers(msg.ContentAs <AuthByDeveloperPacket>().DeveloperId);
authTask.Wait();
_auth = authTask.Result;
var info = new UserAuthInfoRequest {
userAuthInfo = _auth
};
InitializeUserHandler(ctx, info.userAuthInfo.UserId);
ctx.WriteAndFlushAsync(info);
});
_authorized = true;
break;
case "authByAndroid":
_checkAuth = true;
break;
case "authByBrowser":
_checkAuth = true;
break;
case "authByIOS":
_checkAuth = true;
break;
case "userAuth":
var userAuth = msg.ContentAs <UserAuthPacket>();
_authTask?.Dispose();
_authTask = Task.Factory.StartNew(() =>
{
var authState = _authManager.CheckAuth(userAuth.UserId, userAuth.AuthKey, userAuth.AuthTs, userAuth.IsBrowser);
Task.WaitAll(authState);
var data = new UserAuthStateRequest
{
UserAuthState = new UserAuthStateData
{
State = (int)authState.Result,
MinVersion = "0.0.0"
}
};
InitializeUserHandler(ctx, userAuth.UserId);
ctx.WriteAndFlushAsync(data);
if (authState.Result == AuthState.Success)
{
_authorized = true;
}
});
break;
default:
_logger.Error("InvalidAuth");
ctx.CloseAsync();
break;
}
}
}
public override Task CloseAsync(IChannelHandlerContext ctx)
{
log.Info("Channel {0} close", ctx.Channel);
return(ctx.CloseAsync());
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
log.Warn($"Exception in NettyClientHandler: {exception.Message}");
context.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
logger.LogError($"服务端Exception: {exception}");
context.CloseAsync();
}
/// <summary>
/// 异常处理
/// </summary>
/// <param name="context"></param>
/// <param name="exception"></param>
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
_logger.WriteErrorLog(exception);
context.CloseAsync();
}
//public override void ChannelReadComplete(IChannelHandlerContext context) => context.Flush();
public override void ExceptionCaught(IChannelHandlerContext context, Exception e)
{
_channelManager.ExceptionCaught(context, e);
context.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
Logger.Error(exception, "Error in clent handler.");
context.CloseAsync();
}
public Task CloseAsync(IChannelHandlerContext context)
{
return(context.CloseAsync());
}
public override Task CloseAsync(IChannelHandlerContext context)
{
_logger.Debug($"{context.Channel} CLOSE");
return(context.CloseAsync());
}
public override void ChannelRead(IChannelHandlerContext context, object messageData)
{
var buffer = messageData as IByteBuffer;
var data = new byte[0];
if (buffer != null)
{
data = buffer.ToArray();
}
var msg = new CCMessage(data, data.Length);
short magic = 0;
var message = new ByteArray();
if (msg.Read(ref magic) &&
magic == Magic &&
msg.Read(ref message))
{
var receivedMessage = new CCMessage(message);
CCMessage.MessageType coreId = 0;
if (!receivedMessage.Read(ref coreId))
{
return;
}
switch (coreId)
{
case CCMessage.MessageType.Rmi:
short rmiId = 0;
if (receivedMessage.Read(ref rmiId))
{
switch (rmiId)
{
case 15:
{
var username = "";
var password = "";
var register = false;
if (receivedMessage.Read(ref username) &&
receivedMessage.Read(ref password) &&
receivedMessage.Read(ref register))
{
using (var db = AuthDatabase.Open())
{
Logger.Information("Authentication login from {endpoint}",
context.Channel.RemoteAddress.ToString());
if (username.Length > 5 && password.Length > 5 && Namecheck.IsNameValid(username))
{
var result = db.Find <AccountDto>(statement => statement
.Where($"{nameof(AccountDto.Username):C} = @{nameof(username)}")
.Include <BanDto>(join => @join.LeftOuterJoin())
.WithParameters(new { Username = username }));
var account = result.FirstOrDefault();
if (account == null &&
(Config.Instance.NoobMode || Config.Instance.AutoRegister))
{
account = new AccountDto {
Username = username
};
var newSalt = new byte[24];
using (var csprng = new RNGCryptoServiceProvider())
{
csprng.GetBytes(newSalt);
}
var hash = new Rfc2898DeriveBytes(password, newSalt, 24000).GetBytes(24);
account.Password = Convert.ToBase64String(hash);
account.Salt = Convert.ToBase64String(newSalt);
db.InsertAsync(account);
}
var salt = Convert.FromBase64String(account?.Salt ?? "");
var passwordGuess = new Rfc2898DeriveBytes(password, salt, 24000).GetBytes(24);
var actualPassword = Convert.FromBase64String(account?.Password ?? "");
var difference =
(uint)passwordGuess.Length ^ (uint)actualPassword.Length;
for (var i = 0;
i < passwordGuess.Length && i < actualPassword.Length;
i++)
{
difference |= (uint)(passwordGuess[i] ^ actualPassword[i]);
}
if ((difference != 0 ||
string.IsNullOrWhiteSpace(account?.Password ?? "")) &&
!Config.Instance.NoobMode)
{
Logger.Error(
"Wrong authentication credentials for {username} / {endpoint}",
username, context.Channel.RemoteAddress.ToString());
var ack = new CCMessage();
ack.Write(false);
ack.Write("Login failed");
RmiSend(context, 16, ack);
}
else
{
if (account != null)
{
account.LoginToken = AuthHash
.GetHash256(
$"{context.Channel.RemoteAddress}-{account.Username}-{account.Password}")
.ToLower();
account.LastLogin = $"{DateTimeOffset.UtcNow:yyyyMMddHHmmss}";
account.AuthToken = "";
account.newToken = "";
db.UpdateAsync(account);
var ack = new CCMessage();
ack.Write(true);
ack.Write(account.LoginToken);
RmiSend(context, 16, ack);
}
Logger.Information("Authentication success for {username}",
username);
}
}
else
{
Logger.Error(
"Wrong authentication credentials for {username} / {endpoint}",
username, context.Channel.RemoteAddress.ToString());
var ack = new CCMessage();
ack.Write(false);
ack.Write("Invalid length of username/password");
RmiSend(context, 16, ack);
}
}
}
else
{
Logger.Error("Wrong login for {endpoint}",
context.Channel.RemoteAddress.ToString());
var ack = new CCMessage();
ack.Write(false);
ack.Write("Invalid loginpacket");
RmiSend(context, 16, ack);
}
break;
}
case 17:
context.CloseAsync();
break;
default:
Logger.Error("Received unknown rmiId{rmi} from {endpoint}", rmiId,
context.Channel.RemoteAddress.ToString());
break;
}
}
break;
case CCMessage.MessageType.Notify:
context.CloseAsync();
break;
default:
Logger.Error("Received unknown coreID{coreid} from {endpoint}", coreId,
context.Channel.RemoteAddress.ToString());
break;
}
}
else
{
Logger.Error("Received invalid packetstruct from {endpoint}", context.Channel.RemoteAddress.ToString());
context.CloseAsync();
}
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception e)
{
_logger.LogError(e.Message);
context.CloseAsync();
}
public override Task CloseAsync(IChannelHandlerContext ctx)
{
if (this.Logger.IsEnabled(this.InternalLevel))
{
this.Logger.Log(this.InternalLevel, this.Format(ctx, "CLOSE"));
}
return ctx.CloseAsync();
}
static async void ShutdownOnError(IChannelHandlerContext context, Exception exception)
{
var self = (MqttIotHubAdapter)context.Handler;
if (!self.IsInState(StateFlags.Closed))
{
self.stateFlags |= StateFlags.Closed;
self.subscribeCompletion?.TrySetException(exception);
self.deviceBoundOneWayProcessor.Abort(exception);
self.deviceBoundTwoWayProcessor.Abort(exception);
self.serviceBoundOneWayProcessor.Abort(exception);
self.serviceBoundTwoWayProcessor.Abort(exception);
self.onError(exception);
try
{
await context.CloseAsync();
}
catch (Exception ex) when (!ex.IsFatal())
{
//ignored
}
}
}
async void Shutdown(IChannelHandlerContext context)
{
if (this.IsInState(StateFlags.Closed))
{
return;
}
try
{
this.stateFlags |= StateFlags.Closed; // "or" not to interfere with ongoing logic which has to honor Closed state when it's right time to do (case by case)
this.CloseIotHubConnection();
await context.CloseAsync();
}
catch
{
// ignored
}
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
s_logger.LogError(exception.ToString());
context.CloseAsync();
}
public override void ChannelRead(IChannelHandlerContext context, object message)
{
while (true)
{
if (_isWebSocket)
{
IByteBuffer buffer;
_lastReadBuffer?.ResetReaderIndex();
if (_lastReadBuffer != null && _lastReadBuffer.ReadableBytes != 0)
{
buffer = ByteBufferUtil.DefaultAllocator.Buffer(
_lastReadBuffer.ReadableBytes + ((IByteBuffer)message).ReadableBytes);
buffer.WriteBytes(_lastReadBuffer);
buffer.WriteBytes((IByteBuffer)message);
_lastReadBuffer = buffer;
}
else
{
buffer = (IByteBuffer)message;
_lastReadBuffer = buffer;
}
if (buffer.ReadableBytes < 2)
{
return;
}
IByteBuffer bufferCopy = ByteBufferUtil.DefaultAllocator.Buffer(buffer.Capacity);
buffer.ReadBytes(bufferCopy, 2);
if ((bufferCopy.GetByte(0) & 8) == 8)
{
//操作码位8表示断开连接
context.CloseAsync();
return;
}
byte[] maskKey = { 0, 0, 0, 0 };
bool masked = false;
byte lenMark = bufferCopy.GetByte(1);
if (lenMark >= 128)
{
masked = true;
lenMark -= 128;
}
int offset = 0;
int len = 0;
if (lenMark <= 125)
{
offset = 2;
len = lenMark;
}
else if (lenMark == 126)
{
offset = 4;
if (buffer.ReadableBytes < 2)
{
return;
}
buffer.ReadBytes(bufferCopy, 2);
len = bufferCopy.GetUnsignedShort(2);
}
else if (lenMark == 127)
{
offset = 10;
if (buffer.ReadableBytes < 8)
{
return;
}
buffer.ReadBytes(bufferCopy, 8);
len = (int)bufferCopy.GetLong(2);
}
if (masked)
{
if (buffer.ReadableBytes < 4)
{
return;
}
buffer.ReadBytes(bufferCopy, 4);
for (int i = 0; i < 4; i++)
{
maskKey[i] = bufferCopy.GetByte(offset + i);
}
offset += 4;
}
if (buffer.ReadableBytes < len)
{
return;
}
buffer.ReadBytes(bufferCopy, len);
IByteBuffer output = ByteBufferUtil.DefaultAllocator.Buffer(len);
for (int i = 0; i < len; i++)
{
output.WriteByte(bufferCopy.GetByte(offset + i) ^ maskKey[i % 4]);
}
_lastReadBuffer.MarkReaderIndex();
base.ChannelRead(context, output);
if (_lastReadBuffer.ReadableBytes <= 0)
{
return;
}
_lastReadBuffer = null;
message = buffer;
continue;
}
try
{
var buffer = (IByteBuffer)message;
IByteBuffer bufferCopy = buffer.Copy();
var bytes = new byte[bufferCopy.ReadableBytes];
bufferCopy.ReadBytes(bytes);
string data = Encoding.ASCII.GetString(bytes);
const string requestWebSocketMark = "Sec-WebSocket-Key:";
int index = data.IndexOf(requestWebSocketMark, StringComparison.Ordinal);
if (index < 0)
{
throw new Exception();
}
data = data.Substring(index + requestWebSocketMark.Length + 1);
var key = new StringBuilder();
foreach (char t in data)
{
if (IsBase64Char(t))
{
key.Append(t);
}
else
{
break;
}
}
key.Append("258EAFA5-E914-47DA-95CA-C5AB0DC85B11");
SHA1 sha1 = new SHA1CryptoServiceProvider();
data = Convert.ToBase64String(sha1.ComputeHash(Encoding.UTF8.GetBytes(key.ToString())));
sha1.Dispose();
StringBuilder ret = new StringBuilder();
ret.Append("HTTP/1.1 101 Switching Protocols\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: ");
ret.Append(data);
ret.Append("\r\nUpgrade: websocket\r\n\r\n");
IByteBuffer output = ByteBufferUtil.DefaultAllocator.Buffer();
output.WriteBytes(Encoding.UTF8.GetBytes(ret.ToString()));
context.WriteAndFlushAsync(output);
_isWebSocket = true;
}
catch
{
base.ChannelRead(context, message);
}
finally
{
if (_isWebSocket)
{
context.Channel.Pipeline.Remove <LengthFieldBasedFrameDecoder>();
context.Channel.Pipeline.Remove <LengthFieldPrepender>();
}
else
{
context.Channel.Pipeline.Remove(this);
}
}
break;
}
}
/// <summary>
/// Closes channel
/// </summary>
/// <param name="context"></param>
/// <param name="graceful"></param>
async void Shutdown(IChannelHandlerContext context, bool graceful)
{
if (this.IsInState(StateFlags.Closed))
{
return;
}
try
{
this.stateFlags |= StateFlags.Closed; // "or" not to interfere with ongoing logic which has to honor Closed state when it's right time to do (case by case)
PerformanceCounters.ConnectionsCurrent.Decrement();
Queue<Packet> connectQueue = this.connectPendingQueue;
if (connectQueue != null)
{
while (connectQueue.Count > 0)
{
Packet packet = connectQueue.Dequeue();
ReferenceCountUtil.Release(packet);
}
}
PublishPacket will = !graceful && this.IsInState(StateFlags.Connected) ? this.willPacket : null;
if (will != null)
{
// try publishing will message before shutting down IoT Hub connection
try
{
this.publishProcessor.Post(context, will);
}
catch (Exception ex)
{
MqttIotHubAdapterEventSource.Log.Warning("Failed sending Will Message.", ex);
}
}
this.CloseIotHubConnection();
await context.CloseAsync();
}
catch (Exception ex)
{
MqttIotHubAdapterEventSource.Log.Warning("Error occurred while shutting down the channel.", ex);
}
}
public override void ExceptionCaught(IChannelHandlerContext contex, Exception e)
{
Console.WriteLine(DateTime.Now.Millisecond);
Console.WriteLine(e.StackTrace);
contex.CloseAsync();
}
//---------------------------------------------------------------------
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
context.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
_logger.Error("Exception: " + exception, exception);
context.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
this.completion.TrySetException(exception);
context.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception) => context.CloseAsync();
public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
{
Console.WriteLine("Exception: " + exception);
context.CloseAsync();
}
public override void ExceptionCaught(IChannelHandlerContext ctx, Exception exception)
{
OnException?.Invoke(exception);
completionSource.TrySetException(exception);
ctx.CloseAsync();
}
public virtual Task CloseAsync(IChannelHandlerContext context) => context.CloseAsync();
public override void ExceptionCaught(IChannelHandlerContext ctx, Exception cause)
{
//Logger.Warn("Failed to initialize a channel. Closing: " + ctx.Channel, cause);
ctx.CloseAsync();
}