Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 1234567]

PushTechnology
ClientInterface
Core
Connection
Connectors
Interfaces
IClientConnector
DiffusionCore
Buffering
BufferOverflowException	This represents a buffer overflow exception.
BufferUnderflowException	The exception representing a buffer underflow.
ByteBuffer	This class represents a byte buffer.
ByteBufferAllocator	Helper class for byte buffer allocations.
ByteBufferBase	Base byte buffer class.
ByteBufferFactory	The singleton byte buffer creation class. Keeps them in a stack for re-use.
ByteBufferHexDumper	Utility class to dump the bytes of a ByteBuffer as hexadecimal.
IByteBufferAllocator
MessageByteBuffer	Custom byte buffer for Diffusion-type messages.
NewByteBuffer
BufferUnpacker
Client
Types
CredentialsType	Type code indicated by the type of the credentials.
ICredentials	Immutable value containing the proof material to support an authentication request
ICredentialsFactory	The interface for the factory of the standard credential types.
Connection
Common
IO
Serialisation
IByteBufferSerialiser< in T >	Serialise an object to a byte buffer.
Connectors
Connection
ConnectionDetailsImpl	The implementation of the ConnectionDetails interface.
ConnectionFactory	Factory class for ConnectionDetails and ServerDetails objects.
ExternalClient
Notify
ITopicNotifyTopicHandler	A 'topic notify' topic handler
ITopicNotifyTopicListener	The interface for notifications from a 'topic notify' topic
MetadataType	Represents the metadata type, or the way metadata is represented in a notification.
NotificationLevel	Specifies the level of notification that the client wishes to receive
SelectionMode	Specifies the mode when selecting topic ranges for notification
TopicNotifyIO	This is used to serialize a TopicDefinition to a topic message or parse one from a topic message.
TopicNotifyTopicHandlerImpl	Implementation of ITopicNotifyTopicHandler.
Paging
ILines	Encapsulates lines on a page. The lines can be represented as strings or records.
IPagedTopicHandler	A paged topic handler
IPagedTopicListener	Listener for events from a paged topic.
IPageStatus	Status of page.
PageOption	Paging options.
Service
IServiceTopicError	Encapsulates the details of a service topic error.
IServiceTopicHandler	A service topic handler
IServiceTopicListener	Listener for responses from a service topic
IServiceTopicResponse	Encapsulates a response from a service request
ServiceErrorType	Service error types.
HttpConstants	Various constants for http-type connections.
IDiffusionClientTcpConnection	Represents a diffusion client TCP connection.
IClientConnectionHandler	The interface representing a client connection to a Diffusion server.
IConnectionHandler	The interface for connections to a Diffusion server.
IDiffusionBaseConnector	The interface for Diffusion connections.
IDiffusionBufferMessageHandler	The interface for handling buffer messages.
IDiffusionListenerBase	The base listener for Diffusion connections
Interfaces
IConnectionDetails	The interface for an object that specifies the requirements for connection to a server
IDiffusionClientConnector	The interface for client connections to a Diffusion server.
IDiffusionClientEventMethods	The interface for client connection event methods.
IDiffusionClientEvents	The interface for client connection events.
IDiffusionConnectorEvents	The interface for client connector events.
IServerConnectionListener	The interface for any object that is to listen for events from a server connection
IServerPingResponseListener	This is the interface for objects which are to receive ping responses to 'ping' requests sent to the server
ISyncMessageHandler	The interface for synchronous message handling.
Services
DiffusionConnectionHelper	Handles connections to the Diffusion server and optionally retries the connection.
DiffusionConnectionService< TClient >	This class is responsible for the connection attempts to the Diffusion server.
DiffusionConnectionServiceEventArgs	The event args for the connection service.
DiffusionPingService	The class responsible for sending ping messages to the Diffusion server at a specified interval.
DiffusionReconnectionEventArgs	The event args for the connection 'retry' service helper.
IDiffusionPingService	The interface for the timed ping message service.
IDiffusionReconnector	This is the interface for applications that wish to perform timed reconnection attempts to the Diffusion server.
IDiffusionReconnectorEvents	The interface for reconnector service events.
PingServiceEventArgs	The event arguments used by the ping service.
Sockets
Enums
ClientSocket	Base class for socket-based communications.
MessageEventArgs	The arguments representing inbound message(s).
ConnectionCapabilities	The connection capabilities class.
ConnectionTimeoutException	Gets thrown if the connection has timed out
HttpServerDetailsImpl	Defines the details of an HTTP connection to a Diffusion Web Server.
HttpSslServerDetailsImpl	Defines the details of an HTTP connection to a Diffusion server over SSL.
ICascadable	The interface for connection cascades.
IDiffusionBufferMessageHandler	Handles a complete message in a byte buffer.
IDiffusionMessagingConnector	Methods relating to creating and sending messages
IDiffusionTopicConnector	The interface for a Diffusion topic connector.
IProxyConnector
IServerDetails	Defines the details of a connection to a Diffusion server
ServerDetailsEventArgs	The event arguments representing server details information.
ServerDetailsFactory	Maintains a collection of 'ServerDetailsHost' objects.
ServerDetailsHost	Helper class for the ServerDetailsFactory class.
ServerDetailsImpl	Defines the details of a connection to a Diffusion server.
ServerDetailsLoader	Class responsible for serializing/deserializing server details to/from isolated storage.
TcpServerDetailsImpl	Defines the details of a TCP connection to a Diffusion server.
TcpSslServerDetailsImpl	Defines the details of a TCP connection to a Diffusion server over SSL.
WebSocketServerDetailsImpl	Defines the details of a WebSocket connection to a Diffusion server.
WebSocketSSLServerDetailsImpl	Defines the details of a Secure WebSocket connection to a Diffusion server.
Enums
Exceptions
ClientException	Represents a client exception.
DecryptException	Represents a decryption exception.
DiffusionAPIException	The class representing a Diffusion API exception.
DiffusionBaseException	The base class for all Diffusion exceptions.
DiffusionConnectionException	The exception representing a Diffusion connection exception.
DiffusionException	Represents a general Diffusion exception.
DiffusionFatalException	A Diffusion fatal exception.
DiffusionMessageException	This represents a Diffusion message exception.
DiffusionPropertyException
InboundMessageException	Represents a Diffusion inbound message exception.
InboundProtocolException	Represents an inbound protocol exception.
InvalidTopicException	Represents an invalid topic exception.
NotCompressedException	The exception representing a compression error.
OutboundConnectionException	Represents an outbound connection exception.
TopicInvalidException	The exception indicating an invalid topic.
ExtensionMethods
Events	Helper class for raising events.
List
ObjectCloning	Class responsible for deep cloning of objects.
Utils	String extension methods.
LongPath
Interop
LongPathDirectory	Provides methods for creating, deleting, moving and enumerating directories and subdirectories with long paths, that is, paths that exceed 259 characters.
LongPathFile	Provides static methods for creating, copying, deleting, moving, and opening of files with long paths, that is, paths that exceed 259 characters.
Messaging
Ack
IServerAckListener	A listener for the outcome of messages sent to Servers requiring acknowledgement.
ServerAckManager
ThreadingHandleContainer	Helper class for scheduled events.
Data
metadata
record
MRecordMessage	Implementation of IMMessage for data of type TopicDataType.RECORD.
MRecordRecord	Implementation of IMRecord for data of type TopicDataType.RECORD.
ICustomFieldHandler	A custom field handler defines the behaviour of a custom string metadata type
IMField
IMMessage	Interface for 'message' metadata node
IMNode	Base interface for all metadata nodes
IMRecord
MetadataFactory	This factory class allows for the creation of message metadata for meta modelling
MFieldCustomString	Custom string field.
MFieldDecimalString	Decimal string implementation.
MFieldImpl	Base implementation of MField - subclassed for specific data types.
MFieldIntegerString	Integer string implementation.
MFieldString	Metadata field for record implementation.
MMessageImpl	Implementation of IMMessage.
MNodeImpl	Implementation of IMNode metadata
MRecordImpl	Base implementation of IMRecord
Multiplicity	Defines the multiplicity of a metadata field or record node within its parent message or record.
Paging
LinesRecord	Record implementation of ILines.
LinesString	String implementation of ILines.
PagedClient	Encapsulates a client and its paging information.
PagedTopicHandlerImpl	Implementation of IPagedTopicHandler.
PageStatusImpl	Implementation of IPageStatus.
record
RecordData	Flat and fast version of a record initialised and maintained with metadata
RecordDataKey	Record data key
Service
ServiceTopicErrorImpl	Implementation of IServiceTopicError.
ServiceTopicHandlerImpl	Implementation of IServiceTopicHandler.
ServiceTopicResponseImpl	Implementation of IServiceTopicResponse.
TopicDataType	Defines the type of an instance of ITopicData.
Encoding
MessageBase64Decoder	The decoder for base64 messages.
MessageBase64Encoder	Base64 message encoder.
MessageCompressor	Handles the compression of a Diffusion message's bytes.
MessageConverter	A message converter is used for encoding or decoding of messages.
MessageDecompressor	Message decompressor
MessageDecrypter	Message decrypter.
MessageEncrypter	Class responsible for message encryption.
MessageEncryption	Message encryption methods
Enums
Services
ITimedMessageSender	The interface responsible for timed message sending.
MessageArgsContainer	Encapsulates message arguments for the message sending service.
MessageCreatorSendEventArgs	The event arguments used with the message creator control.
MessageFactoryHelper	Factory methods to create messages for the various UI test tools.
TimedMessageSendingService	This class is responsible for the sending of Diffusion messages at a given frequency.
Topic
ITopicDeletionListener	This is the interface for objects that wish to be notified of all topic deletions
ITopicListener	The interface for an object that can have topic messages received from a message source routed to it
TopicAddMessage	Topic add (subscribe/unsubscribe) message.
TopicAliasing	This provides maps of Topic aliases to Topic Names for a given VM. This is used in a Topic Provider VM (Publisher or Publisher Server) to record the mappings of Topic Names to aliases. In a normal Client VM it is never populated. An alias is set up for a Topic when the Topic is first created. However, aliases are NOT deleted, even when the Topic goes away. This deliberate so that if a topic is removed and then recreated it would have the same alias which is necessary because a client is not informed when a Topic goes away and therefore could preserve an invalid alias.
TopicAliasMap	This is used to represent the mapping of topic aliases to topic names for a particular server connection. The aliases therefore represent the alias of the topic at the server and not locally
TopicDataType	Defines the type of an instance of TopicData.
TopicDefinition	This encapsulates all or some of the details of a topic
TopicListenerImpl	The class responsible for topic listener invocations.
TopicListeners	Topic listeners cache
TopicLoadMessage	Topic load message.
TopicMessageComparator	This is the default Message Comparator for Topic Messages
TopicMessageComparators	Topic message comparators.
TopicMessageImpl	Implementation of ITopicMessage.
TopicProperty	Specifies topic property keys that may be used in topic definitions (TopicDefinition).
TopicSelector	A Topic Selector is a mechanism for selecting topics either by name or by a topic selector pattern.
TopicSelectorAll	Selects all topics under a node (optionally including the node itself).
TopicSelectorName	Selects a node by full name returning either the node, all nodes subordinate to it or the node AND all nodes subordinate to it.
TopicSelectorPatterns	Selects nodes by regex patterns, each pattern separated by a '/' representing a level of the topic tree hierarchy. The nodes selected can be returned or all nodes beneath them or all selected nodes AND all nodes beneath them.
TopicSelectorSinglePattern	Selects nodes by a single regex pattern applied to the full hierarchic name
TopicSet	An ordered set of topic names and/or topic selectors
CommandLoadMessage	Command Topic Load
CommandMessage	An inbound message for a 'command topic'
CommandNotificationMessage	This is an outbound message from a Command topic. This can either represent a notification or a response to a CommandMessage. They have a type which indicates what they are - this type will be unique to the command category indicated on the CommandLoadMessage.
DataMessageImpl	This is the implementation of the API DataMessage which is a message that has a data body.
DataMessageInputStream	An input stream for reading from messages.
DataMessageOutputStream	An input stream for writing to messages.
DeltaMessage	Delta message.
DeltaMessageAck	A delta message requiring acknowledgement. This is for incoming use only and the convertToTopicMessage() method will convert to a real message for processing.
FetchReplyMessage	Fetch reply message.
IExternalMessage	Represents a message from some external source.
IMessageComparable	The interface for message comparisons.
IMessageHeaderTransformer	This is just a tag interface which allows an object to be passed from 'Message' subclass construction right up to the base class so that it can pass it back down to use when applying header values.
IMessageParser	The interface for parsing a message from some input source.
IMessageSource	A message source is an object through which inbound messages are passed to an application
MessageBase	This is the base class for all Diffusion messages.
MessageComparator	A Message Comparator may be used for comparing messages for equality or order.
MessageEventArgs< T >	The event arguments representing delivery of a Diffusion message.
MessageFactory	Typically APIs have suitable factory methods for all message types they require but the message creation methods provided here may be used by classes that have no direct reference to an API object.
MessageImpl	This is the base class for all messages. All messages have the same basic format, that being:
MessageParser	Message parser base class.
MessageToClientParser	Unpacks messages to a client (from server to client).
MessageUtils	Diffusion message utilities.
Record	A message record.
DiffusionConnectorState	This class represents the state of the Diffusion server.
ServerClosedEventArgs	The event arguments representing a Diffusion server connection closure.
ServerRejectedCredentialsEventArgs	The event arguments representing a Diffusion server rejecting credentials.
TopicLoadMessageAck	A load message requiring acknowledgement. This is for incoming use only and the convertToTopicMessage() method will convert to a real message for processing.
WebSocketMessageToClientParser	Unpacks messages to a client (from server to client).
WebSocketTopicMessage	An external WebSocket message.
Persistence
BaseDetailsLoader	The abstract class responsible for persisting details to Isolated Storage.
IsolatedStorageUtils	Helper methods for Isolated Storage.
PropertyHandler
BaseProperties	This is the base class for loading and controlling property files. If the PropertyFile is dynamic then the last time modified will be checked before each GetProperty call. If required the property file will be re-loaded picking up all of the new values.
ComplexProperty< T >	Complex dynamic property implementation.
DynamicProperty< T >	Abstract class for all dynamic properties.
IPropertyHandler	A Property Handler provides an interface to a set of properties
JavaProperties	The JavaProperties class loads and saves Java style properties from a Stream. This version uses C# friendly names and implements the most important features of the Java Properties class in Sun Java version 1.5.0 with some methods omitted (e.g. the loadFrom/storeToXML methods as C# provides simple alternatives and any
LineReader	A private class to read lines from the input stream in the special escaped ".properties" format.
Properties	An implementation of the Java Properties class.
PropertyHandlerImpl	Implementation of IPropertyHandler.
SimpleProperty< T >	Simple dynamic property.
PropertyHandlers
APIProperties	The Diffusion system properties class.
DiffusionProperties	Class representing Diffusion properties.
Threading
LimitedConcurrencyLevelTaskScheduler	Provides a task scheduler that ensures a maximum concurrency level while running on top of the ThreadPool.
Locks
DevPlanetLock
ReadLock
ReadOnlyLock
WriteLock
ThreadSafeList< T >	A threadsafe generic list.
Timing
TimerStartException	The exception that is thrown when a timer fails to start.
Utilities
EnumerableHelpers	Helper and extension methods for IEnumerable in System.Collections
Nothing	A class to use instead of the disallowed 'void' type in generic arguments.
AdvancedEnum
AdvancedEnum< T >	The base class for 'advanced', i.e. extended, enums.
InvalidBase36CharacterValueException
InvalidBase36DigitValueException
InvalidBase36NumberException
InvalidBase36StringException
Base64	Base64 utilities helper class.
ByteCodeEnum< TEnum >	Extended enums.
ClientType	Client type - dependent on the Diffusion library used by the client
CodeEnum< TEnum, TCode >
FastCrypt	The class responsible for encryption/decryption.
TransportType	Transport type
V4Credentials	Authorisation credentials.