Feature Support for PubNub POSIX C SDK

Access Manager

PubNub provides builtin enterprise-grade security with fine-grained access control to all of your PubNub applications with Access Manager, Message Layer encryption with AES256, and Transport Layer Security with TLS and SSL.

Name	Description
Grant App Context Permissions	The SDK has support for App Context management.
Root permissions for the Access Manager	When you init with secret key, you get root permissions for the Access Manager. With this feature you don't have to grant access to your servers to access channel data. The servers get all access on all channels.
Grant Token	The SDK supports Grant Token.
Parse Token	The SDK supports Parse Token.
Set Token	The SDK supports Set Token.
Revoke Token	The SDK supports Revoke Token.

Channel Groups

Channel Groups allows PubNub developers to bundle thousands of channels into a group that can be identified by name. These Channel Groups can then be subscribed to, receiving data from the many backend-channels the channel group contains.

Name	Description
Add Channels	Add channel to a channel group.
Remove Channels	Remove channel from channel group.
Remove Channels Groups	Remove channel groups.
List Channels In Channel Group	List all channels of a channel group.

Presence

PubNub's Channel Presence empowers your applications to Track online and offline status of users and devices in realtime.

Name	Description
Here Now	Obtain information about the current state of a channel including a list of unique user IDs currently subscribed to the channel and the total occupancy count of the channel.
Where Now	Obtain information about the current list of a channels to which a UUID is subscribed.
Set State	Set state is used to set key/value pairs specific to a subscriber UUID.
Get State	Get state is used to get the key/value pairs specific to a subscriber UUID.
Heartbeat	Timeout events are triggered when the server does not hear a heartbeat from the client within a default timeout time of 280 seconds.

Publish

Publish a message on a channel.

Name	Description
Store Flag	Ability to skip message from storage.
Publish RAW JSON	Publish JSON as is.
Publish with Metadata	Publish extra meta with the request used for Message Filtering.
Publish using GET	Publish using HTTP GET.
Publish using POST	Publish using HTTP POST.
Publish Synchronously	Publish the message synchronously.
Publish Asynchronously	Publish the message asynchronously.
Fire	Fire method used for publishing. When a message is sent using fire, it will not be replicated to other Points of Presence, it will remain at the originating Point of Presence, and is not eligible for archiving via the Message Persistence feature.
Replication Flag	Controls whether the message should be replicated across stores.

Message Persistence

PubNub's Message Persistence feature enables developers to store messages as they are published, and retrieve them at a later time.

Name	Description
Include Timetoken	Whether event dates time tokens should be included in response or not.
Count of Messages on Channels	The API is a history based API that simply does a mostly normal history operation but instead of returning the messages in a channel it returns the count of messages. Without actually calling history on those channels this API gives you the ability to say if there are messages in the chat channel you can go look at further.
Reverse	Traverse the timeline in reverse starting with the oldest message first.
Start End	Time token delimiting the start/end of time slice (exclusive) to pull messages from.
Count	Specifies the number of historical messages to return.
History with meta	The SDK has support to retrieve History with metadata
Fetch messages from storage with meta	This function fetches historical messages from multiple channels with metadata.
Fetch messages from storage with action flags	This function fetches historical messages from multiple channels with message action flags.

This function causes the client to create an open TCP socket to the PubNub Real-Time Network and begin listening for messages on a specified channel.

Name	Description
Subscribe to channels	Ability to subscribe to channels.
Subscribe to channel groups	Ability to subscribe to channel groups.
Subscribe to presence channels	Ability to subscribe to presence channels.
Subscribe to presence channel groups	Ability to subscribe to presence channel groups.
Wildcard subscribe	Wildcard subscribes allow the client to subscribe to multiple channels using wildcard. E.g., if you subscribe to a.* you will get all messages for a.b, a.c, a.x. The wildcarded * portion refers to any portion of the channel string name after the dot (.).
Filter Expression	Stream Filter allows a subscriber to apply a filter to only receive messages that satisfy the conditions of the filter. The message filter is set by the subscribing client(s) but it is applied on the server side thus preventing unwanted messages (those that do not meet the conditions of the filter) from reaching the subscriber.
Signal Listener	Has support to listen to Signal messages.
App Context API User events listener	Has support to listen to User Events from App Context API.
App Context API Space events listener	Has support to listen to Space Events from App Context API.
App Context API Membership events listener	Has support to listen to Membership Events from App Context API.
Message Actions events listener	Has support to listen to Action Events from Message Reactions API.

Signals

A lightweight alternative for small frequent indications exchanged between participants. Examples are typing indicators in chat, or geo-location information.

Name	Description
Send a Signal	Has support to send a Signal.

App Context API

The App Context API enables you to create and retrieve data associated with key objects in the PubNub realtime application platform.

Name	Description
App Context API Get User	Supports the Get User method of the App Context API to retrieve a specific user.
App Context API Get Users	Supports the Get Users method of the App Context API.
App Context API Create User	Supports the Create User method of the App Context API.
App Context API Update User	Supports the Update User method of the App Context API.
App Context API Delete User	Supports the Delete User method of the App Context API.
App Context API Get Space	Supports the Get Space method of the App Context API to retrieve a specific space.
App Context API Get Spaces	Supports the Get Spaces method of the App Context API.
App Context API Create Space	Supports the Create Space method of the App Context API.
App Context API Update Space	Supports the Update Space method of the App Context API.
App Context API Delete Space	Supports the Delete Space method of the App Context API.
App Context API Get Memberships	Supports the Get Memberships method of the App Context API.
App Context API Join Spaces	Supports the Join Spaces method of the App Context API.
App Context API Update Memberships	Supports the Update Memberships method of the App Context API.
App Context API Leave Spaces	Supports the Leave Spaces method of the App Context API.
App Context API Get Members	Supports the Get Members method of the App Context API.
App Context API Add Members	Supports the Add Members method of the App Context API.
App Context API Update Members	Supports the Update Members method of the App Context API.
App Context API Remove Members	Supports the Remove Members method of the App Context API.

Message Reactions

SDK has support for Message Reactions.

Name	Description
Get Message Reactions	SDK has support to Get Message Reactions.
Add Message Reactions	SDK has support to Add Message Reactions.
Remove Message Reactions	SDK has support to Remove Message Reactions.

Time

Return a 17 digit precision Unix epoch from the server.

Name	Description
Time	This function will return a 17 digit precision Unix epoch from the server.