SocketMode ISocketCallback.Connected(Stream stream, TextWriter log)
{
try
{
var socketMode = SocketManager.DefaultSocketMode;
// disallow connection in some cases
OnDebugAbort();
// the order is important here:
// [network]<==[ssl]<==[logging]<==[buffered]
var config = multiplexer.RawConfig;
if (config.Ssl)
{
multiplexer.LogLocked(log, "Configuring SSL");
var host = config.SslHost;
if (string.IsNullOrWhiteSpace(host))
{
host = Format.ToStringHostOnly(bridge.ServerEndPoint.EndPoint);
}
var ssl = new SslStream(stream, false, config.CertificateValidationCallback,
config.CertificateSelectionCallback ?? GetAmbientCertificateCallback()
#if !__MonoCS__
, EncryptionPolicy.RequireEncryption
#endif
);
ssl.AuthenticateAsClient(host);
if (!ssl.IsEncrypted)
{
RecordConnectionFailed(ConnectionFailureType.AuthenticationFailure);
multiplexer.Trace("Encryption failure");
return(SocketMode.Abort);
}
stream = ssl;
socketMode = SocketMode.Async;
}
OnWrapForLogging(ref stream, physicalName);
int bufferSize = config.WriteBuffer;
this.netStream = stream;
this.outStream = bufferSize <= 0 ? stream : new BufferedStream(stream, bufferSize);
multiplexer.LogLocked(log, "Connected {0}", bridge);
bridge.OnConnected(this, log);
return(socketMode);
}
catch (Exception ex)
{
RecordConnectionFailed(ConnectionFailureType.InternalFailure, ex); // includes a bridge.OnDisconnected
multiplexer.Trace("Could not connect: " + ex.Message, physicalName);
return(SocketMode.Abort);
}
}
#pragma warning disable 1998 // NET40 is sync, not async, currently
internal async Task ResolveEndPointsAsync(ConnectionMultiplexer multiplexer, TextWriter log)
{
Dictionary <string, IPAddress> cache = new Dictionary <string, IPAddress>(StringComparer.InvariantCultureIgnoreCase);
for (int i = 0; i < endpoints.Count; i++)
{
var dns = endpoints[i] as DnsEndPoint;
if (dns != null)
{
try
{
IPAddress ip;
if (dns.Host == ".")
{
endpoints[i] = new IPEndPoint(IPAddress.Loopback, dns.Port);
}
else if (cache.TryGetValue(dns.Host, out ip))
{ // use cache
endpoints[i] = new IPEndPoint(ip, dns.Port);
}
else
{
multiplexer.LogLocked(log, "Using DNS to resolve '{0}'...", dns.Host);
#if NET40
var ips = Dns.GetHostAddresses(dns.Host);
#else
var ips = await Dns.GetHostAddressesAsync(dns.Host).ObserveErrors().ForAwait();
#endif
if (ips.Length == 1)
{
ip = ips[0];
multiplexer.LogLocked(log, "'{0}' => {1}", dns.Host, ip);
cache[dns.Host] = ip;
endpoints[i] = new IPEndPoint(ip, dns.Port);
}
}
}
catch (Exception ex)
{
multiplexer.OnInternalError(ex);
multiplexer.LogLocked(log, ex.Message);
}
}
}
}
internal async Task ResolveEndPointsAsync(ConnectionMultiplexer multiplexer, TextWriter log)
{
var cache = new Dictionary <string, IPAddress>(StringComparer.OrdinalIgnoreCase);
for (int i = 0; i < EndPoints.Count; i++)
{
if (EndPoints[i] is DnsEndPoint dns)
{
try
{
if (dns.Host == ".")
{
EndPoints[i] = new IPEndPoint(IPAddress.Loopback, dns.Port);
}
else if (cache.TryGetValue(dns.Host, out IPAddress ip))
{ // use cache
EndPoints[i] = new IPEndPoint(ip, dns.Port);
}
else
{
multiplexer.LogLocked(log, "Using DNS to resolve '{0}'...", dns.Host);
var ips = await Dns.GetHostAddressesAsync(dns.Host).ObserveErrors().ForAwait();
if (ips.Length == 1)
{
ip = ips[0];
multiplexer.LogLocked(log, "'{0}' => {1}", dns.Host, ip);
cache[dns.Host] = ip;
EndPoints[i] = new IPEndPoint(ip, dns.Port);
}
}
}
catch (Exception ex)
{
multiplexer.OnInternalError(ex);
multiplexer.LogLocked(log, ex.Message);
}
}
}
}
internal SocketToken BeginConnect(EndPoint endpoint, ISocketCallback callback, ConnectionMultiplexer multiplexer, TextWriter log)
{
var socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
SetFastLoopbackOption(socket);
socket.NoDelay = true;
try
{
CompletionType connectCompletionType = CompletionType.Any;
this.ShouldForceConnectCompletionType(ref connectCompletionType);
var formattedEndpoint = Format.ToString(endpoint);
if (endpoint is DnsEndPoint)
{
// A work-around for a Mono bug in BeginConnect(EndPoint endpoint, AsyncCallback callback, object state)
DnsEndPoint dnsEndpoint = (DnsEndPoint)endpoint;
CompletionTypeHelper.RunWithCompletionType(
(cb) =>
{
multiplexer.LogLocked(log, "BeginConnect: {0}", formattedEndpoint);
return(socket.BeginConnect(dnsEndpoint.Host, dnsEndpoint.Port, cb, Tuple.Create(socket, callback)));
},
(ar) =>
{
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(ar, multiplexer, log);
multiplexer.LogLocked(log, "Connect complete: {0}", formattedEndpoint);
},
connectCompletionType);
}
else
{
CompletionTypeHelper.RunWithCompletionType(
(cb) => {
multiplexer.LogLocked(log, "BeginConnect: {0}", formattedEndpoint);
return(socket.BeginConnect(endpoint, cb, Tuple.Create(socket, callback)));
},
(ar) => {
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(ar, multiplexer, log);
multiplexer.LogLocked(log, "Connect complete: {0}", formattedEndpoint);
},
connectCompletionType);
}
}
catch (NotImplementedException ex)
{
if (!(endpoint is IPEndPoint))
{
throw new InvalidOperationException("BeginConnect failed with NotImplementedException; consider using IP endpoints, or enable ResolveDns in the configuration", ex);
}
throw;
}
var token = new SocketToken(socket);
return(token);
}
#pragma warning disable 1998 // NET40 is sync, not async, currently
internal async Task ResolveEndPointsAsync(ConnectionMultiplexer multiplexer, TextWriter log)
{
Dictionary<string, IPAddress> cache = new Dictionary<string, IPAddress>(StringComparer.OrdinalIgnoreCase);
for (int i = 0; i < endpoints.Count; i++)
{
var dns = endpoints[i] as DnsEndPoint;
if (dns != null)
{
try
{
IPAddress ip;
if (dns.Host == ".")
{
endpoints[i] = new IPEndPoint(IPAddress.Loopback, dns.Port);
}
else if (cache.TryGetValue(dns.Host, out ip))
{ // use cache
endpoints[i] = new IPEndPoint(ip, dns.Port);
}
else
{
multiplexer.LogLocked(log, "Using DNS to resolve '{0}'...", dns.Host);
#if NET40
var ips = Dns.GetHostAddresses(dns.Host);
#else
var ips = await Dns.GetHostAddressesAsync(dns.Host).ObserveErrors().ForAwait();
#endif
if (ips.Length == 1)
{
ip = ips[0];
multiplexer.LogLocked(log, "'{0}' => {1}", dns.Host, ip);
cache[dns.Host] = ip;
endpoints[i] = new IPEndPoint(ip, dns.Port);
}
}
}
catch (Exception ex)
{
multiplexer.OnInternalError(ex);
multiplexer.LogLocked(log, ex.Message);
}
}
}
}
private void EndConnectImpl(IAsyncResult ar, ConnectionMultiplexer multiplexer, TextWriter log)
{
Tuple<Socket, ISocketCallback> tuple = null;
try
{
tuple = (Tuple<Socket, ISocketCallback>)ar.AsyncState;
bool ignoreConnect = false;
ShouldIgnoreConnect(tuple.Item2, ref ignoreConnect);
if (ignoreConnect) return;
var socket = tuple.Item1;
var callback = tuple.Item2;
socket.EndConnect(ar);
var netStream = new NetworkStream(socket, false);
var socketMode = callback == null ? SocketMode.Abort : callback.Connected(netStream, log);
switch (socketMode)
{
case SocketMode.Poll:
multiplexer.LogLocked(log, "Starting poll");
OnAddRead(socket, callback);
break;
case SocketMode.Async:
multiplexer.LogLocked(log, "Starting read");
try
{ callback.StartReading(); }
catch (Exception ex)
{
ConnectionMultiplexer.TraceWithoutContext(ex.Message);
Shutdown(socket);
}
break;
default:
ConnectionMultiplexer.TraceWithoutContext("Aborting socket");
Shutdown(socket);
break;
}
}
catch(ObjectDisposedException)
{
multiplexer.LogLocked(log, "(socket shutdown)");
if (tuple != null)
{
try
{ tuple.Item2.Error(); }
catch (Exception inner)
{
ConnectionMultiplexer.TraceWithoutContext(inner.Message);
}
}
}
catch(Exception outer)
{
ConnectionMultiplexer.TraceWithoutContext(outer.Message);
if (tuple != null)
{
try
{ tuple.Item2.Error(); }
catch (Exception inner)
{
ConnectionMultiplexer.TraceWithoutContext(inner.Message);
}
}
}
}
internal SocketToken BeginConnect(EndPoint endpoint, ISocketCallback callback, ConnectionMultiplexer multiplexer, TextWriter log)
{
var socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
SetFastLoopbackOption(socket);
socket.NoDelay = true;
try
{
CompletionType connectCompletionType = CompletionType.Any;
this.ShouldForceConnectCompletionType(ref connectCompletionType);
var formattedEndpoint = Format.ToString(endpoint);
if (endpoint is DnsEndPoint)
{
// A work-around for a Mono bug in BeginConnect(EndPoint endpoint, AsyncCallback callback, object state)
DnsEndPoint dnsEndpoint = (DnsEndPoint)endpoint;
CompletionTypeHelper.RunWithCompletionType(
(cb) =>
{
multiplexer.LogLocked(log, "BeginConnect: {0}", formattedEndpoint);
return socket.BeginConnect(dnsEndpoint.Host, dnsEndpoint.Port, cb, Tuple.Create(socket, callback));
},
(ar) =>
{
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(ar, multiplexer, log);
multiplexer.LogLocked(log, "Connect complete: {0}", formattedEndpoint);
},
connectCompletionType);
}
else
{
CompletionTypeHelper.RunWithCompletionType(
(cb) => {
multiplexer.LogLocked(log, "BeginConnect: {0}", formattedEndpoint);
return socket.BeginConnect(endpoint, cb, Tuple.Create(socket, callback));
},
(ar) => {
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(ar, multiplexer, log);
multiplexer.LogLocked(log, "Connect complete: {0}", formattedEndpoint);
},
connectCompletionType);
}
}
catch (NotImplementedException ex)
{
if (!(endpoint is IPEndPoint))
{
throw new InvalidOperationException("BeginConnect failed with NotImplementedException; consider using IP endpoints, or enable ResolveDns in the configuration", ex);
}
throw;
}
var token = new SocketToken(socket);
return token;
}
void Handshake(PhysicalConnection connection, TextWriter log)
{
multiplexer.LogLocked(log, "Server handshake");
if (connection == null)
{
multiplexer.Trace("No connection!?");
return;
}
Message msg;
string password = multiplexer.RawConfig.Password;
if (!StringExtensions.IsNullOrWhiteSpace(password))
{
multiplexer.LogLocked(log, "Authenticating (password)");
msg = Message.Create(-1, CommandFlags.FireAndForget, RedisCommand.AUTH, (RedisValue)password);
msg.SetInternalCall();
WriteDirectOrQueueFireAndForget(connection, msg, ResultProcessor.DemandOK);
}
if (multiplexer.CommandMap.IsAvailable(RedisCommand.CLIENT))
{
string name = multiplexer.ClientName;
if (!StringExtensions.IsNullOrWhiteSpace(name))
{
name = nameSanitizer.Replace(name, "");
if (!StringExtensions.IsNullOrWhiteSpace(name))
{
multiplexer.LogLocked(log, "Setting client name: {0}", name);
msg = Message.Create(-1, CommandFlags.FireAndForget, RedisCommand.CLIENT, RedisLiterals.SETNAME, (RedisValue)name);
msg.SetInternalCall();
WriteDirectOrQueueFireAndForget(connection, msg, ResultProcessor.DemandOK);
}
}
}
var connType = connection.Bridge.ConnectionType;
if (connType == ConnectionType.Interactive)
{
multiplexer.LogLocked(log, "Auto-configure...");
AutoConfigure(connection);
}
multiplexer.LogLocked(log, "Sending critical tracer: {0}", connection.Bridge);
var tracer = GetTracerMessage(true);
tracer = LoggingMessage.Create(log, tracer);
WriteDirectOrQueueFireAndForget(connection, tracer, ResultProcessor.EstablishConnection);
// note: this **must** be the last thing on the subscription handshake, because after this
// we will be in subscriber mode: regular commands cannot be sent
if (connType == ConnectionType.Subscription)
{
var configChannel = multiplexer.ConfigurationChangedChannel;
if (configChannel != null)
{
msg = Message.Create(-1, CommandFlags.FireAndForget, RedisCommand.SUBSCRIBE, (RedisChannel)configChannel);
WriteDirectOrQueueFireAndForget(connection, msg, ResultProcessor.TrackSubscriptions);
}
}
multiplexer.LogLocked(log, "Flushing outbound buffer");
connection.Flush();
}
private void EndConnectImpl(IAsyncResult ar, ConnectionMultiplexer multiplexer, TextWriter log, Tuple <Socket, ISocketCallback> tuple)
{
try
{
bool ignoreConnect = false;
ShouldIgnoreConnect(tuple.Item2, ref ignoreConnect);
if (ignoreConnect)
{
return;
}
var socket = tuple.Item1;
var callback = tuple.Item2;
#if CORE_CLR
multiplexer.Wait((Task)ar); // make it explode if invalid (note: already complete at this point)
#else
socket.EndConnect(ar);
#endif
var netStream = new NetworkStream(socket, false);
var socketMode = callback?.Connected(netStream, log) ?? SocketMode.Abort;
switch (socketMode)
{
case SocketMode.Poll:
multiplexer.LogLocked(log, "Starting poll");
OnAddRead(socket, callback);
break;
case SocketMode.Async:
multiplexer.LogLocked(log, "Starting read");
try
{ callback.StartReading(); }
catch (Exception ex)
{
ConnectionMultiplexer.TraceWithoutContext(ex.Message);
Shutdown(socket);
}
break;
default:
ConnectionMultiplexer.TraceWithoutContext("Aborting socket");
Shutdown(socket);
break;
}
}
catch (ObjectDisposedException)
{
multiplexer.LogLocked(log, "(socket shutdown)");
if (tuple != null)
{
try
{ tuple.Item2.Error(); }
catch (Exception inner)
{
ConnectionMultiplexer.TraceWithoutContext(inner.Message);
}
}
}
catch (Exception outer)
{
ConnectionMultiplexer.TraceWithoutContext(outer.Message);
if (tuple != null)
{
try
{ tuple.Item2.Error(); }
catch (Exception inner)
{
ConnectionMultiplexer.TraceWithoutContext(inner.Message);
}
}
}
}
private void EndConnectImpl(IAsyncResult ar, ConnectionMultiplexer multiplexer, TextWriter log)
{
Tuple <Socket, ISocketCallback> tuple = null;
try
{
tuple = (Tuple <Socket, ISocketCallback>)ar.AsyncState;
bool ignoreConnect = false;
ShouldIgnoreConnect(tuple.Item2, ref ignoreConnect);
if (ignoreConnect)
{
return;
}
var socket = tuple.Item1;
var callback = tuple.Item2;
socket.EndConnect(ar);
var netStream = new NetworkStream(socket, false);
var socketMode = callback == null ? SocketMode.Abort : callback.Connected(netStream, log);
switch (socketMode)
{
case SocketMode.Poll:
multiplexer.LogLocked(log, "Starting poll");
OnAddRead(socket, callback);
break;
case SocketMode.Async:
multiplexer.LogLocked(log, "Starting read");
try
{ callback.StartReading(); }
catch (Exception ex)
{
ConnectionMultiplexer.TraceWithoutContext(ex.Message);
Shutdown(socket);
}
break;
default:
ConnectionMultiplexer.TraceWithoutContext("Aborting socket");
Shutdown(socket);
break;
}
}
catch (ObjectDisposedException)
{
multiplexer.LogLocked(log, "(socket shutdown)");
if (tuple != null)
{
try
{ tuple.Item2.Error(); }
catch (Exception inner)
{
ConnectionMultiplexer.TraceWithoutContext(inner.Message);
}
}
}
catch (Exception outer)
{
ConnectionMultiplexer.TraceWithoutContext(outer.Message);
if (tuple != null)
{
try
{ tuple.Item2.Error(); }
catch (Exception inner)
{
ConnectionMultiplexer.TraceWithoutContext(inner.Message);
}
}
}
}
internal SocketToken BeginConnect(EndPoint endpoint, ISocketCallback callback, ConnectionMultiplexer multiplexer, TextWriter log)
{
var addressFamily = endpoint.AddressFamily == AddressFamily.Unspecified ? AddressFamily.InterNetwork : endpoint.AddressFamily;
var socket = new Socket(addressFamily, SocketType.Stream, ProtocolType.Tcp);
SetFastLoopbackOption(socket);
socket.NoDelay = true;
try
{
var connectCompletionType = CompletionType.Any;
ShouldForceConnectCompletionType(ref connectCompletionType);
var formattedEndpoint = Format.ToString(endpoint);
var tuple = Tuple.Create(socket, callback);
if (endpoint is DnsEndPoint dnsEndpoint)
{
// A work-around for a Mono bug in BeginConnect(EndPoint endpoint, AsyncCallback callback, object state)
#if !FEATURE_THREADPOOL
multiplexer.LogLocked(log, "BeginConnect: {0}", formattedEndpoint);
socket.ConnectAsync(dnsEndpoint.Host, dnsEndpoint.Port).ContinueWith(t =>
{
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(t, multiplexer, log, tuple);
multiplexer.LogLocked(log, "Connect complete: {0}", formattedEndpoint);
});
#else
CompletionTypeHelper.RunWithCompletionType(
cb => {
multiplexer.LogLocked(log, "BeginConnect: {0}", formattedEndpoint);
return(socket.BeginConnect(dnsEndpoint.Host, dnsEndpoint.Port, cb, tuple));
},
ar => {
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(ar, multiplexer, log, tuple);
multiplexer.LogLocked(log, "Connect complete: {0}", formattedEndpoint);
},
connectCompletionType);
#endif
}
else
{
#if !FEATURE_THREADPOOL
multiplexer.LogLocked(log, "BeginConnect: {0}", formattedEndpoint);
socket.ConnectAsync(endpoint).ContinueWith(t =>
{
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(t, multiplexer, log, tuple);
});
#else
CompletionTypeHelper.RunWithCompletionType(
cb => {
multiplexer.LogLocked(log, "BeginConnect: {0}", formattedEndpoint);
return(socket.BeginConnect(endpoint, cb, tuple));
},
ar => {
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(ar, multiplexer, log, tuple);
multiplexer.LogLocked(log, "Connect complete: {0}", formattedEndpoint);
},
connectCompletionType);
#endif
}
}
catch (NotImplementedException ex)
{
if (!(endpoint is IPEndPoint))
{
throw new InvalidOperationException("BeginConnect failed with NotImplementedException; consider using IP endpoints, or enable ResolveDns in the configuration", ex);
}
throw;
}
var token = new SocketToken(socket);
return(token);
}
internal SocketToken BeginConnect(EndPoint endpoint, ISocketCallback callback, ConnectionMultiplexer multiplexer, TextWriter log)
{
void RunWithCompletionType(Func <AsyncCallback, IAsyncResult> beginAsync, AsyncCallback asyncCallback)
{
void proxyCallback(IAsyncResult ar)
{
if (!ar.CompletedSynchronously)
{
asyncCallback(ar);
}
}
var result = beginAsync(proxyCallback);
if (result.CompletedSynchronously)
{
result.AsyncWaitHandle.WaitOne();
asyncCallback(result);
}
}
var addressFamily = endpoint.AddressFamily == AddressFamily.Unspecified ? AddressFamily.InterNetwork : endpoint.AddressFamily;
var socket = new Socket(addressFamily, SocketType.Stream, ProtocolType.Tcp);
SetFastLoopbackOption(socket);
socket.NoDelay = true;
try
{
var formattedEndpoint = Format.ToString(endpoint);
var tuple = Tuple.Create(socket, callback);
multiplexer.LogLocked(log, "BeginConnect: {0}", formattedEndpoint);
// A work-around for a Mono bug in BeginConnect(EndPoint endpoint, AsyncCallback callback, object state)
if (endpoint is DnsEndPoint dnsEndpoint)
{
RunWithCompletionType(
cb => socket.BeginConnect(dnsEndpoint.Host, dnsEndpoint.Port, cb, tuple),
ar => {
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(ar, multiplexer, log, tuple);
multiplexer.LogLocked(log, "Connect complete: {0}", formattedEndpoint);
});
}
else
{
RunWithCompletionType(
cb => socket.BeginConnect(endpoint, cb, tuple),
ar => {
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(ar, multiplexer, log, tuple);
multiplexer.LogLocked(log, "Connect complete: {0}", formattedEndpoint);
});
}
}
catch (NotImplementedException ex)
{
if (!(endpoint is IPEndPoint))
{
throw new InvalidOperationException("BeginConnect failed with NotImplementedException; consider using IP endpoints, or enable ResolveDns in the configuration", ex);
}
throw;
}
var token = new SocketToken(socket);
return(token);
}
private void EndConnectImpl(IAsyncResult ar, ConnectionMultiplexer multiplexer, TextWriter log, Tuple<Socket, ISocketCallback> tuple)
{
try
{
bool ignoreConnect = false;
ShouldIgnoreConnect(tuple.Item2, ref ignoreConnect);
if (ignoreConnect) return;
var socket = tuple.Item1;
var callback = tuple.Item2;
#if CORE_CLR
multiplexer.Wait((Task)ar); // make it explode if invalid (note: already complete at this point)
#else
socket.EndConnect(ar);
#endif
var netStream = new NetworkStream(socket, false);
var socketMode = callback?.Connected(netStream, log) ?? SocketMode.Abort;
switch (socketMode)
{
case SocketMode.Poll:
multiplexer.LogLocked(log, "Starting poll");
OnAddRead(socket, callback);
break;
case SocketMode.Async:
multiplexer.LogLocked(log, "Starting read");
try
{ callback.StartReading(); }
catch (Exception ex)
{
ConnectionMultiplexer.TraceWithoutContext(ex.Message);
Shutdown(socket);
}
break;
default:
ConnectionMultiplexer.TraceWithoutContext("Aborting socket");
Shutdown(socket);
break;
}
}
catch (ObjectDisposedException)
{
multiplexer.LogLocked(log, "(socket shutdown)");
if (tuple != null)
{
try
{ tuple.Item2.Error(); }
catch (Exception inner)
{
ConnectionMultiplexer.TraceWithoutContext(inner.Message);
}
}
}
catch(Exception outer)
{
ConnectionMultiplexer.TraceWithoutContext(outer.Message);
if (tuple != null)
{
try
{ tuple.Item2.Error(); }
catch (Exception inner)
{
ConnectionMultiplexer.TraceWithoutContext(inner.Message);
}
}
}
}