Feature support in the Diffusion API

Review this information when designing your clients to determine which APIs provide the functionality you require.

Features are sets of capabilities provided by the Diffusion™ API. Some features are not supported or not fully supported in some APIs.

The Diffusion Cloud libraries also provide capabilities that are not exposed through their APIs. Some of these capabilities can be configured.

Note: The Python client currently implements limited capabilities. See the Python API documentation for details.

Table 1. Capabilities provided by the Diffusion Cloud client libraries
Capability	JavaScript^®	Apple^®	Android™	Java™	.NET	C
Connecting
Connect to Diffusion Cloud
Cascade connection through multiple transports
Connect asynchronously
Connect synchronously
Connect using a URL-style string as a parameter
Connect using individual parameters
Connect securely
Configure SSL context or behavior
Reconnecting
Reconnect to Diffusion Cloud
Configure a reconnection timeout
Define a custom reconnection strategy
Resynchronize message streams on reconnect
Abort reconnect if resynchronization fails
Maintain a recovery buffer of messages on the client to resend to Diffusion Cloud on reconnect
Configure the client-side recovery buffer
Detect disconnections by monitoring activity
Detect disconnections by using TCP state
Ping Diffusion Cloud
Change the principal used by the connected client session
Receiving data from topics
Subscribe to a topic or set of topics
Receive data as a value stream
Receive data as content
Fetch the state of a topic
Managing topics
Create a topic
Create/update/query time series topics
Create a topic and set initial value
Create a topic from a topic specification
Create a topic from topic details
Create a topic with metadata
Receive topic notifications
Delete a topic
Delete a branch of the topic tree
Set an automatic topic removal policy
Updating topics
Update a topic
Perform exclusive updates
Perform non-exclusive updates
Managing subscriptions
Subscribe or unsubscribe another client to a topic
Subscribe or unsubscribe another client to a topic based on session properties
Handling subscriptions to missing topics
Request-response messaging
Send a request to a path
Send a request to a client session
Send a request to a set of client sessions based on session properties
Respond to requests sent to a session
Respond to requests sent to a path
Managing security
Authenticate client sessions and assign roles to client sessions
Configure how Diffusion Cloud authenticates client sessions and assign roles to client sessions
Configure the roles assigned to anonymous sessions and named sessions
Configure the permissions associated with roles assigned to client sessions
Grant permissions to a principal using topic ownership
Managing other clients
Receive notifications about client session events including session properties
Get the properties of a specific client session
Update user-defined session properties of a client session or set of sessions
Close a client session
Other capabilities
Flow control