public static void ComputeContractRequirements(ContractDescription contractDescription, out ChannelRequirements requirements)
{
requirements = new ChannelRequirements();
requirements.usesInput = false;
requirements.usesReply = false;
requirements.usesOutput = false;
requirements.usesRequest = false;
requirements.sessionMode = contractDescription.SessionMode;
for (int i = 0; i < contractDescription.Operations.Count; i++)
{
OperationDescription description = contractDescription.Operations[i];
bool isOneWay = description.IsOneWay;
if (!description.IsServerInitiated())
{
if (isOneWay)
{
requirements.usesInput = true;
}
else
{
requirements.usesReply = true;
}
}
else if (isOneWay)
{
requirements.usesOutput = true;
}
else
{
requirements.usesRequest = true;
}
}
}
public static void ComputeContractRequirements(ContractDescription contractDescription, out ChannelRequirements requirements)
{
requirements = new ChannelRequirements();
requirements.usesInput = false;
requirements.usesReply = false;
requirements.usesOutput = false;
requirements.usesRequest = false;
requirements.sessionMode = contractDescription.SessionMode;
for (int i = 0; i < contractDescription.Operations.Count; i++)
{
OperationDescription description = contractDescription.Operations[i];
bool isOneWay = description.IsOneWay;
if (!description.IsServerInitiated())
{
if (isOneWay)
{
requirements.usesInput = true;
}
else
{
requirements.usesReply = true;
}
}
else if (isOneWay)
{
requirements.usesOutput = true;
}
else
{
requirements.usesRequest = true;
}
}
}
public static Exception CantCreateChannelException(IEnumerable <Type> supportedChannels, IEnumerable <Type> requiredChannels, string bindingName)
{
string contractChannelTypesString = "";
string bindingChannelTypesString = "";
Exception exception = ChannelRequirements.BindingContractMismatchException(supportedChannels, requiredChannels, bindingName,
ref contractChannelTypesString, ref bindingChannelTypesString);
if (exception == null)
{
// none of the obvious speculations about the failure holds, so we fall back to the generic error message
exception = new InvalidOperationException(SR.Format(SR.CouldnTCreateChannelForType2, bindingName, contractChannelTypesString));
}
return(exception);
}
public static Type[] ComputeRequiredChannels(ref ChannelRequirements requirements)
{
if (requirements.usesOutput || requirements.usesRequest)
{
switch (requirements.sessionMode)
{
case SessionMode.Allowed:
return new Type[] {
typeof(IDuplexChannel),
typeof(IDuplexSessionChannel),
};
case SessionMode.Required:
return new Type[] {
typeof(IDuplexSessionChannel),
};
case SessionMode.NotAllowed:
return new Type[] {
typeof(IDuplexChannel),
};
}
}
else if (requirements.usesInput && requirements.usesReply)
{
switch (requirements.sessionMode)
{
case SessionMode.Allowed:
return new Type[] {
typeof(IRequestChannel),
typeof(IRequestSessionChannel),
typeof(IDuplexChannel),
typeof(IDuplexSessionChannel),
};
case SessionMode.Required:
return new Type[] {
typeof(IRequestSessionChannel),
typeof(IDuplexSessionChannel),
};
case SessionMode.NotAllowed:
return new Type[] {
typeof(IRequestChannel),
typeof(IDuplexChannel),
};
}
}
else if (requirements.usesInput)
{
switch (requirements.sessionMode)
{
case SessionMode.Allowed:
return new Type[] {
typeof(IOutputChannel),
typeof(IOutputSessionChannel),
typeof(IRequestChannel),
typeof(IRequestSessionChannel),
typeof(IDuplexChannel),
typeof(IDuplexSessionChannel),
};
case SessionMode.Required:
return new Type[] {
typeof(IOutputSessionChannel),
typeof(IRequestSessionChannel),
typeof(IDuplexSessionChannel),
};
case SessionMode.NotAllowed:
return new Type[] {
typeof(IOutputChannel),
typeof(IRequestChannel),
typeof(IDuplexChannel),
};
}
}
else if (requirements.usesReply)
{
switch (requirements.sessionMode)
{
case SessionMode.Allowed:
return new Type[] {
typeof(IRequestChannel),
typeof(IRequestSessionChannel),
typeof(IDuplexChannel),
typeof(IDuplexSessionChannel),
};
case SessionMode.Required:
return new Type[] {
typeof(IRequestSessionChannel),
typeof(IDuplexSessionChannel),
};
case SessionMode.NotAllowed:
return new Type[] {
typeof(IRequestChannel),
typeof(IDuplexChannel),
};
}
}
else
{
switch (requirements.sessionMode)
{
case SessionMode.Allowed:
return new Type[] {
typeof(IOutputSessionChannel),
typeof(IOutputChannel),
typeof(IRequestSessionChannel),
typeof(IRequestChannel),
typeof(IDuplexChannel),
typeof(IDuplexSessionChannel),
};
case SessionMode.Required:
return new Type[] {
typeof(IOutputSessionChannel),
typeof(IRequestSessionChannel),
typeof(IDuplexSessionChannel),
};
case SessionMode.NotAllowed:
return new Type[] {
typeof(IOutputChannel),
typeof(IRequestChannel),
typeof(IDuplexChannel),
};
}
}
return null;
}
public static System.Type[] ComputeRequiredChannels(ref ChannelRequirements requirements)
{
if (requirements.usesOutput || requirements.usesRequest)
{
switch (requirements.sessionMode)
{
case SessionMode.Allowed:
return(new System.Type[] { typeof(IDuplexChannel), typeof(IDuplexSessionChannel) });
case SessionMode.Required:
return(new System.Type[] { typeof(IDuplexSessionChannel) });
case SessionMode.NotAllowed:
return(new System.Type[] { typeof(IDuplexChannel) });
}
}
else if (requirements.usesInput && requirements.usesReply)
{
switch (requirements.sessionMode)
{
case SessionMode.Allowed:
return(new System.Type[] { typeof(IRequestChannel), typeof(IRequestSessionChannel), typeof(IDuplexChannel), typeof(IDuplexSessionChannel) });
case SessionMode.Required:
return(new System.Type[] { typeof(IRequestSessionChannel), typeof(IDuplexSessionChannel) });
case SessionMode.NotAllowed:
return(new System.Type[] { typeof(IRequestChannel), typeof(IDuplexChannel) });
}
}
else if (requirements.usesInput)
{
switch (requirements.sessionMode)
{
case SessionMode.Allowed:
return(new System.Type[] { typeof(IOutputChannel), typeof(IOutputSessionChannel), typeof(IRequestChannel), typeof(IRequestSessionChannel), typeof(IDuplexChannel), typeof(IDuplexSessionChannel) });
case SessionMode.Required:
return(new System.Type[] { typeof(IOutputSessionChannel), typeof(IRequestSessionChannel), typeof(IDuplexSessionChannel) });
case SessionMode.NotAllowed:
return(new System.Type[] { typeof(IOutputChannel), typeof(IRequestChannel), typeof(IDuplexChannel) });
}
}
else if (requirements.usesReply)
{
switch (requirements.sessionMode)
{
case SessionMode.Allowed:
return(new System.Type[] { typeof(IRequestChannel), typeof(IRequestSessionChannel), typeof(IDuplexChannel), typeof(IDuplexSessionChannel) });
case SessionMode.Required:
return(new System.Type[] { typeof(IRequestSessionChannel), typeof(IDuplexSessionChannel) });
case SessionMode.NotAllowed:
return(new System.Type[] { typeof(IRequestChannel), typeof(IDuplexChannel) });
}
}
else
{
switch (requirements.sessionMode)
{
case SessionMode.Allowed:
return(new System.Type[] { typeof(IOutputSessionChannel), typeof(IOutputChannel), typeof(IRequestSessionChannel), typeof(IRequestChannel), typeof(IDuplexChannel), typeof(IDuplexSessionChannel) });
case SessionMode.Required:
return(new System.Type[] { typeof(IOutputSessionChannel), typeof(IRequestSessionChannel), typeof(IDuplexSessionChannel) });
case SessionMode.NotAllowed:
return(new System.Type[] { typeof(IOutputChannel), typeof(IRequestChannel), typeof(IDuplexChannel) });
}
}
return(null);
}
public static ServiceChannelFactory BuildChannelFactory(ServiceEndpoint serviceEndpoint, bool useActiveAutoClose)
{
if (serviceEndpoint == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("serviceEndpoint");
}
serviceEndpoint.EnsureInvariants();
serviceEndpoint.ValidateForClient();
ChannelRequirements requirements;
ContractDescription contractDescription = serviceEndpoint.Contract;
ChannelRequirements.ComputeContractRequirements(contractDescription, out requirements);
BindingParameterCollection parameters;
ClientRuntime clientRuntime = DispatcherBuilder.BuildProxyBehavior(serviceEndpoint, out parameters);
Binding binding = serviceEndpoint.Binding;
Type[] requiredChannels = ChannelRequirements.ComputeRequiredChannels(ref requirements);
CustomBinding customBinding = new CustomBinding(binding);
BindingContext context = new BindingContext(customBinding, parameters);
InternalDuplexBindingElement internalDuplexBindingElement = null;
InternalDuplexBindingElement.AddDuplexFactorySupport(context, ref internalDuplexBindingElement);
customBinding = new CustomBinding(context.RemainingBindingElements);
customBinding.CopyTimeouts(serviceEndpoint.Binding);
foreach (Type type in requiredChannels)
{
if (type == typeof(IOutputChannel) && customBinding.CanBuildChannelFactory <IOutputChannel>(parameters))
{
return(new ServiceChannelFactoryOverOutput(customBinding.BuildChannelFactory <IOutputChannel>(parameters), clientRuntime, binding));
}
if (type == typeof(IRequestChannel) && customBinding.CanBuildChannelFactory <IRequestChannel>(parameters))
{
return(new ServiceChannelFactoryOverRequest(customBinding.BuildChannelFactory <IRequestChannel>(parameters), clientRuntime, binding));
}
if (type == typeof(IDuplexChannel) && customBinding.CanBuildChannelFactory <IDuplexChannel>(parameters))
{
if (requirements.usesReply &&
binding.CreateBindingElements().Find <TransportBindingElement>().ManualAddressing)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(
SR.GetString(SR.CantCreateChannelWithManualAddressing)));
}
return(new ServiceChannelFactoryOverDuplex(customBinding.BuildChannelFactory <IDuplexChannel>(parameters), clientRuntime, binding));
}
if (type == typeof(IOutputSessionChannel) && customBinding.CanBuildChannelFactory <IOutputSessionChannel>(parameters))
{
return(new ServiceChannelFactoryOverOutputSession(customBinding.BuildChannelFactory <IOutputSessionChannel>(parameters), clientRuntime, binding, false));
}
if (type == typeof(IRequestSessionChannel) && customBinding.CanBuildChannelFactory <IRequestSessionChannel>(parameters))
{
return(new ServiceChannelFactoryOverRequestSession(customBinding.BuildChannelFactory <IRequestSessionChannel>(parameters), clientRuntime, binding, false));
}
if (type == typeof(IDuplexSessionChannel) && customBinding.CanBuildChannelFactory <IDuplexSessionChannel>(parameters))
{
if (requirements.usesReply &&
binding.CreateBindingElements().Find <TransportBindingElement>().ManualAddressing)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(
SR.GetString(SR.CantCreateChannelWithManualAddressing)));
}
return(new ServiceChannelFactoryOverDuplexSession(customBinding.BuildChannelFactory <IDuplexSessionChannel>(parameters), clientRuntime, binding, useActiveAutoClose));
}
}
foreach (Type type in requiredChannels)
{
// For SessionMode.Allowed or SessionMode.NotAllowed we will accept session-ful variants as well
if (type == typeof(IOutputChannel) && customBinding.CanBuildChannelFactory <IOutputSessionChannel>(parameters))
{
return(new ServiceChannelFactoryOverOutputSession(customBinding.BuildChannelFactory <IOutputSessionChannel>(parameters), clientRuntime, binding, true));
}
if (type == typeof(IRequestChannel) && customBinding.CanBuildChannelFactory <IRequestSessionChannel>(parameters))
{
return(new ServiceChannelFactoryOverRequestSession(customBinding.BuildChannelFactory <IRequestSessionChannel>(parameters), clientRuntime, binding, true));
}
// and for SessionMode.Required, it is possible that the InstanceContextProvider is handling the session management, so
// accept datagram variants if that is the case
if (type == typeof(IRequestSessionChannel) && customBinding.CanBuildChannelFactory <IRequestChannel>(parameters) &&
customBinding.GetProperty <IContextSessionProvider>(parameters) != null)
{
return(new ServiceChannelFactoryOverRequest(customBinding.BuildChannelFactory <IRequestChannel>(parameters), clientRuntime, binding));
}
}
// we put a lot of work into creating a good error message, as this is a common case
Dictionary <Type, byte> supportedChannels = new Dictionary <Type, byte>();
if (customBinding.CanBuildChannelFactory <IOutputChannel>(parameters))
{
supportedChannels.Add(typeof(IOutputChannel), 0);
}
if (customBinding.CanBuildChannelFactory <IRequestChannel>(parameters))
{
supportedChannels.Add(typeof(IRequestChannel), 0);
}
if (customBinding.CanBuildChannelFactory <IDuplexChannel>(parameters))
{
supportedChannels.Add(typeof(IDuplexChannel), 0);
}
if (customBinding.CanBuildChannelFactory <IOutputSessionChannel>(parameters))
{
supportedChannels.Add(typeof(IOutputSessionChannel), 0);
}
if (customBinding.CanBuildChannelFactory <IRequestSessionChannel>(parameters))
{
supportedChannels.Add(typeof(IRequestSessionChannel), 0);
}
if (customBinding.CanBuildChannelFactory <IDuplexSessionChannel>(parameters))
{
supportedChannels.Add(typeof(IDuplexSessionChannel), 0);
}
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(ChannelRequirements.CantCreateChannelException(
supportedChannels.Keys, requiredChannels, binding.Name));
}
public static Exception BindingContractMismatchException(IEnumerable <Type> supportedChannels, IEnumerable <Type> requiredChannels,
string bindingName, ref string contractChannelTypesString, ref string bindingChannelTypesString)
{
StringBuilder contractChannelTypes = new StringBuilder();
bool contractRequiresOneWay = true;
bool contractRequiresRequestReply = true;
bool contractRequiresDuplex = true;
bool contractRequiresTwoWay = true; // request-reply or duplex
bool contractRequiresSession = true;
bool contractRequiresDatagram = true;
foreach (Type channelType in requiredChannels)
{
if (contractChannelTypes.Length > 0)
{
contractChannelTypes.Append(CultureInfo.CurrentCulture.TextInfo.ListSeparator);
contractChannelTypes.Append(" ");
}
string typeString = channelType.ToString();
contractChannelTypes.Append(typeString.Substring(typeString.LastIndexOf('.') + 1));
if (!ChannelRequirements.IsOneWay(channelType))
{
contractRequiresOneWay = false;
}
if (!ChannelRequirements.IsRequestReply(channelType))
{
contractRequiresRequestReply = false;
}
if (!ChannelRequirements.IsDuplex(channelType))
{
contractRequiresDuplex = false;
}
if (!(ChannelRequirements.IsRequestReply(channelType) || ChannelRequirements.IsDuplex(channelType)))
{
contractRequiresTwoWay = false;
}
if (!ChannelRequirements.IsSessionful(channelType))
{
contractRequiresSession = false;
}
else
{
contractRequiresDatagram = false;
}
}
StringBuilder bindingChannelTypes = new StringBuilder();
bool bindingSupportsOneWay = false;
bool bindingSupportsRequestReply = false;
bool bindingSupportsDuplex = false;
bool bindingSupportsSession = false;
bool bindingSupportsDatagram = false;
bool bindingSupportsAtLeastOneChannelType = false;
foreach (Type channelType in supportedChannels)
{
bindingSupportsAtLeastOneChannelType = true;
if (bindingChannelTypes.Length > 0)
{
bindingChannelTypes.Append(CultureInfo.CurrentCulture.TextInfo.ListSeparator);
bindingChannelTypes.Append(" ");
}
string typeString = channelType.ToString();
bindingChannelTypes.Append(typeString.Substring(typeString.LastIndexOf('.') + 1));
if (ChannelRequirements.IsOneWay(channelType))
{
bindingSupportsOneWay = true;
}
if (ChannelRequirements.IsRequestReply(channelType))
{
bindingSupportsRequestReply = true;
}
if (ChannelRequirements.IsDuplex(channelType))
{
bindingSupportsDuplex = true;
}
if (ChannelRequirements.IsSessionful(channelType))
{
bindingSupportsSession = true;
}
else
{
bindingSupportsDatagram = true;
}
}
bool bindingSupportsTwoWay = bindingSupportsRequestReply || bindingSupportsDuplex;
if (!bindingSupportsAtLeastOneChannelType)
{
return(new InvalidOperationException(SR.Format(SR.BindingDoesnTSupportAnyChannelTypes1, bindingName)));
}
if (contractRequiresSession && !bindingSupportsSession)
{
return(new InvalidOperationException(SR.Format(SR.BindingDoesnTSupportSessionButContractRequires1, bindingName)));
}
if (contractRequiresDatagram && !bindingSupportsDatagram)
{
return(new InvalidOperationException(SR.Format(SR.BindingDoesntSupportDatagramButContractRequires, bindingName)));
}
if (contractRequiresDuplex && !bindingSupportsDuplex)
{
return(new InvalidOperationException(SR.Format(SR.BindingDoesnTSupportDuplexButContractRequires1, bindingName)));
}
if (contractRequiresRequestReply && !bindingSupportsRequestReply)
{
return(new InvalidOperationException(SR.Format(SR.BindingDoesnTSupportRequestReplyButContract1, bindingName)));
}
if (contractRequiresOneWay && !bindingSupportsOneWay)
{
return(new InvalidOperationException(SR.Format(SR.BindingDoesnTSupportOneWayButContractRequires1, bindingName)));
}
if (contractRequiresTwoWay && !bindingSupportsTwoWay)
{
return(new InvalidOperationException(SR.Format(SR.BindingDoesnTSupportTwoWayButContractRequires1, bindingName)));
}
contractChannelTypesString = contractChannelTypes.ToString();
bindingChannelTypesString = bindingChannelTypes.ToString();
return(null);
}
public static ServiceChannelFactory BuildChannelFactory(ServiceEndpoint serviceEndpoint, bool useActiveAutoClose)
{
ChannelRequirements requirements;
BindingParameterCollection parameters;
if (serviceEndpoint == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("serviceEndpoint");
}
serviceEndpoint.EnsureInvariants();
serviceEndpoint.ValidateForClient();
ChannelRequirements.ComputeContractRequirements(serviceEndpoint.Contract, out requirements);
System.ServiceModel.Dispatcher.ClientRuntime clientRuntime = DispatcherBuilder.BuildProxyBehavior(serviceEndpoint, out parameters);
Binding binding = serviceEndpoint.Binding;
System.Type[] requiredChannels = ChannelRequirements.ComputeRequiredChannels(ref requirements);
CustomBinding binding2 = new CustomBinding(binding);
BindingContext context = new BindingContext(binding2, parameters);
InternalDuplexBindingElement internalDuplexBindingElement = null;
InternalDuplexBindingElement.AddDuplexFactorySupport(context, ref internalDuplexBindingElement);
binding2 = new CustomBinding(context.RemainingBindingElements);
binding2.CopyTimeouts(serviceEndpoint.Binding);
foreach (System.Type type in requiredChannels)
{
if ((type == typeof(IOutputChannel)) && binding2.CanBuildChannelFactory <IOutputChannel>(parameters))
{
return(new ServiceChannelFactoryOverOutput(binding2.BuildChannelFactory <IOutputChannel>(parameters), clientRuntime, binding));
}
if ((type == typeof(IRequestChannel)) && binding2.CanBuildChannelFactory <IRequestChannel>(parameters))
{
return(new ServiceChannelFactoryOverRequest(binding2.BuildChannelFactory <IRequestChannel>(parameters), clientRuntime, binding));
}
if ((type == typeof(IDuplexChannel)) && binding2.CanBuildChannelFactory <IDuplexChannel>(parameters))
{
if (requirements.usesReply && binding.CreateBindingElements().Find <TransportBindingElement>().ManualAddressing)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(System.ServiceModel.SR.GetString("CantCreateChannelWithManualAddressing")));
}
return(new ServiceChannelFactoryOverDuplex(binding2.BuildChannelFactory <IDuplexChannel>(parameters), clientRuntime, binding));
}
if ((type == typeof(IOutputSessionChannel)) && binding2.CanBuildChannelFactory <IOutputSessionChannel>(parameters))
{
return(new ServiceChannelFactoryOverOutputSession(binding2.BuildChannelFactory <IOutputSessionChannel>(parameters), clientRuntime, binding, false));
}
if ((type == typeof(IRequestSessionChannel)) && binding2.CanBuildChannelFactory <IRequestSessionChannel>(parameters))
{
return(new ServiceChannelFactoryOverRequestSession(binding2.BuildChannelFactory <IRequestSessionChannel>(parameters), clientRuntime, binding, false));
}
if ((type == typeof(IDuplexSessionChannel)) && binding2.CanBuildChannelFactory <IDuplexSessionChannel>(parameters))
{
if (requirements.usesReply && binding.CreateBindingElements().Find <TransportBindingElement>().ManualAddressing)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(System.ServiceModel.SR.GetString("CantCreateChannelWithManualAddressing")));
}
return(new ServiceChannelFactoryOverDuplexSession(binding2.BuildChannelFactory <IDuplexSessionChannel>(parameters), clientRuntime, binding, useActiveAutoClose));
}
}
foreach (System.Type type2 in requiredChannels)
{
if ((type2 == typeof(IOutputChannel)) && binding2.CanBuildChannelFactory <IOutputSessionChannel>(parameters))
{
return(new ServiceChannelFactoryOverOutputSession(binding2.BuildChannelFactory <IOutputSessionChannel>(parameters), clientRuntime, binding, true));
}
if ((type2 == typeof(IRequestChannel)) && binding2.CanBuildChannelFactory <IRequestSessionChannel>(parameters))
{
return(new ServiceChannelFactoryOverRequestSession(binding2.BuildChannelFactory <IRequestSessionChannel>(parameters), clientRuntime, binding, true));
}
if (((type2 == typeof(IRequestSessionChannel)) && binding2.CanBuildChannelFactory <IRequestChannel>(parameters)) && (binding2.GetProperty <IContextSessionProvider>(parameters) != null))
{
return(new ServiceChannelFactoryOverRequest(binding2.BuildChannelFactory <IRequestChannel>(parameters), clientRuntime, binding));
}
}
Dictionary <System.Type, byte> dictionary = new Dictionary <System.Type, byte>();
if (binding2.CanBuildChannelFactory <IOutputChannel>(parameters))
{
dictionary.Add(typeof(IOutputChannel), 0);
}
if (binding2.CanBuildChannelFactory <IRequestChannel>(parameters))
{
dictionary.Add(typeof(IRequestChannel), 0);
}
if (binding2.CanBuildChannelFactory <IDuplexChannel>(parameters))
{
dictionary.Add(typeof(IDuplexChannel), 0);
}
if (binding2.CanBuildChannelFactory <IOutputSessionChannel>(parameters))
{
dictionary.Add(typeof(IOutputSessionChannel), 0);
}
if (binding2.CanBuildChannelFactory <IRequestSessionChannel>(parameters))
{
dictionary.Add(typeof(IRequestSessionChannel), 0);
}
if (binding2.CanBuildChannelFactory <IDuplexSessionChannel>(parameters))
{
dictionary.Add(typeof(IDuplexSessionChannel), 0);
}
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(ChannelRequirements.CantCreateChannelException(dictionary.Keys, requiredChannels, binding.Name));
}
