private static NetworkDetector.ConnectivityStatus CheckTcpConnectivity(Uri baseAddress, out Exception exception)
{
NetworkDetector.ConnectivityStatus connectivityStatu = NetworkDetector.ConnectivityStatus.Unavailable;
exception = null;
if (!RelayEnvironment.GetEnvironmentVariable("RELAYFORCEHTTP", false) && !RelayEnvironment.GetEnvironmentVariable("RELAYFORCEHTTPS", false))
{
try
{
BinaryMessageEncodingBindingElement binaryMessageEncodingBindingElement = new BinaryMessageEncodingBindingElement();
TcpTransportBindingElement tcpTransportBindingElement = new TcpTransportBindingElement();
tcpTransportBindingElement.ConnectionPoolSettings.MaxOutboundConnectionsPerEndpoint = 100;
tcpTransportBindingElement.MaxReceivedMessageSize = (long)65536;
CustomBinding customBinding = new CustomBinding();
customBinding.Elements.Add(binaryMessageEncodingBindingElement);
customBinding.Elements.Add(tcpTransportBindingElement);
customBinding.OpenTimeout = TimeSpan.FromSeconds(10);
customBinding.SendTimeout = TimeSpan.FromSeconds(10);
customBinding.ReceiveTimeout = TimeSpan.MaxValue;
int num = 9350;
Uri uri = ServiceBusUriHelper.CreateServiceUri("net.tcp", string.Concat(baseAddress.DnsSafeHost, ":", num.ToString(CultureInfo.InvariantCulture)), "/");
IChannelFactory <IDuplexSessionChannel> channelFactory = null;
IDuplexSessionChannel duplexSessionChannel = null;
try
{
channelFactory = customBinding.BuildChannelFactory <IDuplexSessionChannel>(new object[0]);
channelFactory.Open();
duplexSessionChannel = channelFactory.CreateChannel(new EndpointAddress(uri, new AddressHeader[0]));
duplexSessionChannel.Open();
Message message = Message.CreateMessage(MessageVersion.Default, "http://schemas.microsoft.com/netservices/2009/05/servicebus/connect/OnewayPing", new OnewayPingMessage());
duplexSessionChannel.Send(message, customBinding.SendTimeout);
duplexSessionChannel.Close();
duplexSessionChannel = null;
channelFactory.Close();
channelFactory = null;
}
finally
{
if (duplexSessionChannel != null)
{
duplexSessionChannel.Abort();
}
if (channelFactory != null)
{
channelFactory.Abort();
}
}
connectivityStatu = NetworkDetector.ConnectivityStatus.Available;
}
catch (CommunicationException communicationException)
{
exception = communicationException;
}
catch (TimeoutException timeoutException)
{
exception = timeoutException;
}
}
NetworkDetector.LogResult(baseAddress, "Tcp", connectivityStatu);
return(connectivityStatu);
}
public static InternalConnectivityMode DetectInternalConnectivityModeForHttp(Uri uri)
{
if (NetworkDetector.httpWebStreamConnectivityStatus == 3 && NetworkDetector.httpsWebSocketConnectivityStatus == 3 && NetworkDetector.httpsWebStreamConnectivityStatus == 3)
{
NetworkDetector.Reset();
}
Exception[] exceptionArray = new Exception[3];
if (NetworkDetector.IsHttpsWebSocketConnectivityAvailable(uri, out exceptionArray[0]))
{
return(InternalConnectivityMode.HttpsWebSocket);
}
if (NetworkDetector.IsHttpWebStreamConnectivityAvailable(uri, out exceptionArray[1]))
{
return(InternalConnectivityMode.Http);
}
if (!NetworkDetector.IsHttpsWebStreamConnectivityAvailable(uri, out exceptionArray[2]))
{
Exception[] array = (
from e in (IEnumerable <Exception>)exceptionArray
where e != null
select e).ToArray <Exception>();
CultureInfo invariantCulture = CultureInfo.InvariantCulture;
object[] host = new object[] { uri.Host };
string str = string.Format(invariantCulture, "Unable to reach {0} HTTP (80, 443)", host);
if ((int)array.Length <= 0)
{
throw Fx.Exception.AsError(new CommunicationException(str), null);
}
throw Fx.Exception.AsError(new CommunicationException(str, new AggregateException(array)), null);
}
return(InternalConnectivityMode.Https);
}
public static ConnectivityMode DetectConnectivityModeForAutoDetect(Uri uri)
{
if (NetworkDetector.tcpConnectivityStatus == 3 && NetworkDetector.httpConnectivityStatus == 3)
{
NetworkDetector.Reset();
}
Exception[] exceptionArray = new Exception[2];
if (NetworkDetector.IsNetTcpConnectivityAvailable(uri, out exceptionArray[0]))
{
return(ConnectivityMode.Tcp);
}
if (!NetworkDetector.IsHttpConnectivityAvailable(uri, out exceptionArray[1]))
{
Exception[] array = (
from e in (IEnumerable <Exception>)exceptionArray
where e != null
select e).ToArray <Exception>();
string reach = SRClient.UnableToReach(uri.Host, 9351, 9352);
if ((int)array.Length <= 0)
{
throw Fx.Exception.AsError(new CommunicationException(reach), null);
}
throw Fx.Exception.AsError(new CommunicationException(reach, new AggregateException(array)), null);
}
return(ConnectivityMode.Http);
}
private static NetworkDetector.ConnectivityStatus CheckHttpWebStreamConnectivity(Uri baseAddress, out Exception exception)
{
NetworkDetector.ConnectivityStatus connectivityStatu = NetworkDetector.ConnectivityStatus.Unavailable;
exception = null;
if (!RelayEnvironment.GetEnvironmentVariable("RELAYFORCEHTTPS", false) && WebStream.IsSupportingScheme(ServiceBusUriHelper.CreateServiceUri("http", baseAddress.Authority, "/"), out exception))
{
connectivityStatu = NetworkDetector.ConnectivityStatus.Available;
}
NetworkDetector.LogResult(baseAddress, "Http WebStream", connectivityStatu);
return(connectivityStatu);
}
private static NetworkDetector.ConnectivityStatus CheckHttpsWebStreamConnectivity(Uri baseAddress, out Exception exception)
{
NetworkDetector.ConnectivityStatus connectivityStatu = NetworkDetector.ConnectivityStatus.Unavailable;
exception = null;
if (WebStream.IsSupportingScheme(ServiceBusUriHelper.CreateServiceUri("https", baseAddress.Authority, "/"), out exception))
{
connectivityStatu = NetworkDetector.ConnectivityStatus.Available;
}
NetworkDetector.LogResult(baseAddress, "https WebStream", connectivityStatu);
return(connectivityStatu);
}
private static bool IsHttpsWebSocketConnectivityAvailable(Uri baseAddress, out Exception exception)
{
NetworkDetector.ConnectivityStatus connectivityStatu;
exception = null;
while (true)
{
NetworkDetector.ConnectivityStatus connectivityStatu1 = (NetworkDetector.ConnectivityStatus)Interlocked.CompareExchange(ref NetworkDetector.httpsWebSocketConnectivityStatus, 1, 0);
switch (connectivityStatu1)
{
case NetworkDetector.ConnectivityStatus.Unknown:
{
connectivityStatu = NetworkDetector.CheckHttpsWebSocketConnectivity(baseAddress, out exception);
NetworkDetector.ConnectivityStatus connectivityStatu2 = (NetworkDetector.ConnectivityStatus)Interlocked.CompareExchange(ref NetworkDetector.httpsWebSocketConnectivityStatus, (int)connectivityStatu, 1);
if (connectivityStatu2 == NetworkDetector.ConnectivityStatus.Testing)
{
return(connectivityStatu == NetworkDetector.ConnectivityStatus.Available);
}
if (connectivityStatu2 == NetworkDetector.ConnectivityStatus.Unknown)
{
continue;
}
if (connectivityStatu == connectivityStatu2)
{
return(connectivityStatu == NetworkDetector.ConnectivityStatus.Available);
}
NetworkDetector.httpsWebSocketConnectivityStatus = 0;
continue;
}
case NetworkDetector.ConnectivityStatus.Testing:
{
Thread.Sleep(5);
continue;
}
case NetworkDetector.ConnectivityStatus.Available:
case NetworkDetector.ConnectivityStatus.Unavailable:
{
return(connectivityStatu1 == NetworkDetector.ConnectivityStatus.Available);
}
default:
{
goto case NetworkDetector.ConnectivityStatus.Unknown;
}
}
}
return(connectivityStatu == NetworkDetector.ConnectivityStatus.Available);
}
public static IRelayedOnewaySender CreateConnection(BindingContext context, RelayedOnewayTransportBindingElement transportBindingElement, Uri uri)
{
ConnectivitySettings connectivitySetting = context.BindingParameters.Find <ConnectivitySettings>();
NameSettings nameSetting = context.BindingParameters.Find <NameSettings>();
ConnectivityMode connectivityMode = (connectivitySetting != null ? connectivitySetting.Mode : ConnectivityModeHelper.SystemConnectivityMode);
if (connectivityMode == ConnectivityMode.AutoDetect)
{
connectivityMode = NetworkDetector.DetectConnectivityModeForAutoDetect(uri);
}
if (connectivityMode != ConnectivityMode.Tcp)
{
return(new RelayedOnewayHttpSender(context, uri, nameSetting.ServiceSettings.TransportProtection == RelayTransportProtectionMode.EndToEnd));
}
return(new RelayedOnewayTcpSender(context, transportBindingElement, uri, nameSetting.ServiceSettings.TransportProtection == RelayTransportProtectionMode.EndToEnd, new EventTraceActivity()));
}
private static NetworkDetector.ConnectivityStatus CheckHttpConnectivity(Uri baseAddress, out Exception exception)
{
NetworkDetector.ConnectivityStatus connectivityStatu = NetworkDetector.ConnectivityStatus.Unavailable;
exception = null;
try
{
Uri uri = ServiceBusUriHelper.CreateServiceUri("http", baseAddress.Authority, "/");
WebRequest webRequest = WebRequest.Create(uri);
webRequest.Method = "GET";
StreamReader streamReader = new StreamReader(webRequest.GetResponse().GetResponseStream());
using (streamReader)
{
streamReader.ReadToEnd();
}
connectivityStatu = NetworkDetector.ConnectivityStatus.Available;
}
catch (WebException webException)
{
exception = webException;
}
NetworkDetector.LogResult(baseAddress, "Http", connectivityStatu);
return(connectivityStatu);
}
private static InternalConnectivityMode GetInternalConnectivityMode(ConnectivityMode detectMode, HttpConnectivityMode defaultHttpDetectMode, Uri uri)
{
if (detectMode == ConnectivityMode.Tcp)
{
return(InternalConnectivityMode.Tcp);
}
if (detectMode != ConnectivityMode.Http || defaultHttpDetectMode == HttpConnectivityMode.AutoDetect)
{
if (detectMode != ConnectivityMode.AutoDetect)
{
return(NetworkDetector.DetectInternalConnectivityModeForHttp(uri));
}
return(NetworkDetector.DetectInternalConnectivityModeForAutoDetect(uri));
}
if (defaultHttpDetectMode == HttpConnectivityMode.Http)
{
return(InternalConnectivityMode.Http);
}
if (defaultHttpDetectMode == HttpConnectivityMode.Https)
{
return(InternalConnectivityMode.Https);
}
return(InternalConnectivityMode.HttpsWebSocket);
}
static NetworkDetector()
{
NetworkChange.NetworkAvailabilityChanged += new NetworkAvailabilityChangedEventHandler((object o, NetworkAvailabilityEventArgs ea) => NetworkDetector.Reset());
NetworkChange.NetworkAddressChanged += new NetworkAddressChangedEventHandler((object o, EventArgs ea) => NetworkDetector.Reset());
}
