Here is a list of all documented files with brief descriptions:

[detail level 123456]

main
public
include
datatypes
recordv2
diffusion-recordv2-builder.h	Builder for RecordV2
diffusion-recordv2-mutable-record-model.h	Mutable data model for RecordV2
diffusion-recordv2-record-model.h	DIFFUSION_RECORDV2_RECORD_MODEL data model
diffusion-recordv2-schema-builder.h	Schema Builder for RecordV2
diffusion-recordv2-schema-field.h	Schema Field for RecordV2
diffusion-recordv2-schema-record.h	Schema Record for RecordV2
diffusion-recordv2-schema.h	Schema for RecordV2
diffusion-binary.h	Binary datatype associated functions
diffusion-double.h	Double datatype associated functions
diffusion-int64.h	Int64 datatype associated functions
diffusion-json.h	JSON datatype associated functions
diffusion-recordv2.h	RecordV2 datatype associated functions
diffusion-string.h	String datatype associated functions
diffusion-value.h	Generic datatype value associated functions
features
authentication-control.h	Allows a client session to authenticate the credentials of other sessions, and optionally revoke such authentications
client-control.h	Allows access to other sessions' properties and related operations for session management
messaging.h	Provides a client session with request-response messaging capabilities that can be used to implement application services
metrics.h	Allows a client to configure metric collectors
pings.h	Allows pinging the Diffusion server and other sessions
remote-servers.h	This feature allows a client session to manage remote servers
security-control.h	Allows the update of the Server security store, which controls roles and path permissions
security.h	Security feature
session-trees.h	Allows a client session to configure session trees
subscription-control.h	This feature allows a session to subscribe or unsubscribe other sessions to topics, on a single server or across a cluster
system-authentication-control.h	Allows the update of the Server system authentication store, which controls principals and trusted proposed session properties
time-series.h	Allows update and query of time series topics
topic-control.h	Allows the creation and removal of topics and notification of missing topics
topic-notifications.h	Allows a client session to receive notifications about changes to selected topics
topic-update.h	Provides a client session with the ability to update topics
topic-views.h	Allows a client session to manage topic views
topics.h	Subscription to topics and fetching topic data
types
client_details_types.h	Types used for client (and by extension, session) details
common_types.h	Common types that don't fit anywhere else
content_types.h	Structures representing content types (e.g., used for updating topics)
conversation_types.h	Definitions for types representing conversations and conversation IDs
error_types.h	Types and structures relating to reported errors
messaging_types.h	Types used across messaging and messaging control
security_types.h	Constants and types relating to security and authorisation functions
service_types.h	This file lists the types of services supported by Diffusion (although some of these may not yet be supported by the C API) and associated structures
session_types.h	Types to describe a session, its parameters and related functions
topic_types.h	Types relating to topic messages and service messages
transport_types.h	Structures and definitions specific to transport related functions
args.h	Utilities for parsing command line arguments, as used in the examples
authenticator.h	An authentication handler that processes authentication requests from the server
conversation.h	Functions for handling conversations and conversation IDs
d_semaphore.h	Wrappers to provide simple semaphores based on APR mutexes and condition variables
datatypes.h	Enumeration of Diffusion datatypes
diffusion-api-error.h	Error handling functions
diffusion.h	Main include file
error.h	Functions relating to error reporting within the API
fetch-request.h	A fetch request
hash.h	A simple hashmap implementation
hash_num.h	A simple hash with an numerical key implementation
range-query.h	Builder for queries that select a range of events from a time series
reconnect.h	Functions relating to session reconnection
recoverable-update-stream.h
registration.h	Functions for DIFFUSION_REGISTRATION_T management
responder.h	Functions for working with DIFFUSION_RESPONDER_HANDLE_T to either respond or reject requests
retry-strategy.h	Functions relating to initial session establishment retry strategy
security.h	Functions handling authorisation, security and user credentials
session-factory.h	Functions relating to a session and session management
session-lock.h	Functions for creating and managing session locks
session.h	Functions relating to a session and session management
set.h	A simple set implementation, based on hash.h
streams.h	Functions for adding value streams to a session
topic-notification-registration.h	The registration state of the associated listener on the server
topic-selection.h	A topic selection is a pair comprised of a topic selector expression and a selection type
topic-selector.h	A topic selector identifies one or more topics and are created from a pattern expression
topic-specification.h	Functions used for working with topic specifications (TOPIC_SPECIFICATION_T)
topic.h	Functions which are used for accessing topics and their contents
update-constraint-value.h	A constraint value defines a datatype and associated value to be used in a topic update constraint
update-constraint.h	A constraint to be applied to an update operation or the creation of an update stream
update-stream-builder.h	An update stream provides a method for updating a specific topic
update-stream.h	An update stream provides a method for updating a specific topic
utils.h	Miscellaneous utility functions that don't fit anywhere else
value-stream.h	Value stream related callback functions