internal UdpChannelFactory(UdpTransportBindingElement transportBindingElement, BindingContext context)
: base(context.Binding)
{
Fx.Assert(transportBindingElement != null, "transportBindingElement can't be null");
Fx.Assert(context != null, "binding context can't be null");
Fx.Assert(typeof(TChannel) == typeof(IOutputChannel) || typeof(TChannel) == typeof(IDuplexChannel), "this channel factory only supports IOutputChannel and IDuplexChannel");
this.udpTransportBindingElement = transportBindingElement;
// We should only throw this exception if the user specified realistic MaxReceivedMessageSize less than or equal to max message size over UDP.
// If the user specified something bigger like Long.MaxValue, we shouldn't stop them.
if (this.udpTransportBindingElement.MaxReceivedMessageSize <= UdpConstants.MaxMessageSizeOverIPv4 &&
this.udpTransportBindingElement.SocketReceiveBufferSize < this.udpTransportBindingElement.MaxReceivedMessageSize)
{
throw FxTrace.Exception.ArgumentOutOfRange("SocketReceiveBufferSize", this.udpTransportBindingElement.SocketReceiveBufferSize,
SR.Property1LessThanOrEqualToProperty2("MaxReceivedMessageSize", this.udpTransportBindingElement.MaxReceivedMessageSize,
"SocketReceiveBufferSize", this.udpTransportBindingElement.SocketReceiveBufferSize));
}
this.messageEncoderFactory = UdpUtility.GetEncoder(context);
bool retransmissionEnabled = this.udpTransportBindingElement.RetransmissionSettings.Enabled;
//duplicated detection doesn't apply to IOutputChannel, so don't throw if we are only sending
bool duplicateDetectionEnabled = this.udpTransportBindingElement.DuplicateMessageHistoryLength > 0 ? typeof(TChannel) != typeof(IOutputChannel) : false;
UdpUtility.ValidateDuplicateDetectionAndRetransmittionSupport(this.messageEncoderFactory, retransmissionEnabled, duplicateDetectionEnabled);
int maxBufferSize = (int)Math.Min(transportBindingElement.MaxReceivedMessageSize, UdpConstants.MaxMessageSizeOverIPv4);
this.BufferManager = BufferManager.CreateBufferManager(transportBindingElement.MaxBufferPoolSize, maxBufferSize);
}
internal UdpChannelListener(UdpTransportBindingElement udpTransportBindingElement, BindingContext context)
: base(context.Binding)
{
Fx.Assert(udpTransportBindingElement != null, "udpTransportBindingElement can't be null");
Fx.Assert(context != null, "BindingContext parameter can't be null");
this.udpTransportBindingElement = udpTransportBindingElement;
this.cleanedUp = 0;
this.duplicateDetector = null;
if (udpTransportBindingElement.DuplicateMessageHistoryLength > 0)
{
this.duplicateDetector = new DuplicateMessageDetector(udpTransportBindingElement.DuplicateMessageHistoryLength);
}
this.onChannelClosed = new EventHandler(OnChannelClosed);
// We should only throw this exception if the user specified realistic MaxReceivedMessageSize less than or equal to max message size over UDP.
// If the user specified something bigger like Long.MaxValue, we shouldn't stop them.
if (this.udpTransportBindingElement.MaxReceivedMessageSize <= UdpConstants.MaxMessageSizeOverIPv4 &&
this.udpTransportBindingElement.SocketReceiveBufferSize < this.udpTransportBindingElement.MaxReceivedMessageSize)
{
throw FxTrace.Exception.ArgumentOutOfRange("SocketReceiveBufferSize", this.udpTransportBindingElement.SocketReceiveBufferSize,
SR.Property1LessThanOrEqualToProperty2("MaxReceivedMessageSize", this.udpTransportBindingElement.MaxReceivedMessageSize,
"SocketReceiveBufferSize", this.udpTransportBindingElement.SocketReceiveBufferSize));
}
int maxBufferSize = (int)Math.Min(udpTransportBindingElement.MaxReceivedMessageSize, UdpConstants.MaxMessageSizeOverIPv4);
this.bufferManager = BufferManager.CreateBufferManager(udpTransportBindingElement.MaxBufferPoolSize, maxBufferSize);
this.messageEncoderFactory = UdpUtility.GetEncoder(context);
UdpUtility.ValidateDuplicateDetectionAndRetransmittionSupport(this.messageEncoderFactory, this.udpTransportBindingElement.RetransmissionSettings.Enabled, this.udpTransportBindingElement.DuplicateMessageHistoryLength > 0);
InitUri(context);
//Note: because we are binding the sockets in InitSockets, we can start receiving data immediately.
//If there is a delay between the Building of the listener and the call to Open, stale data could build up
//inside the Winsock buffer. We have decided that making sure the port is updated correctly in the listen uri
//(e.g. in the ListenUriMode.Unique case) before leaving the build step is more important than the
//potential for stale data.
InitSockets(context.ListenUriMode == ListenUriMode.Unique);
Fx.Assert(!this.listenUri.IsDefaultPort, "Listen Uri's port should never be the default port: " + this.listenUri);
}