Publish/Subscribe API for C# SDK

PubNub delivers messages worldwide in less than 30 ms. Send a message to one recipient or broadcast to thousands of subscribers.

For higher-level details on publishing and subscribing, refer to Connection Management and to Publish Messages. This page uses the C# software development kit (SDK) and application programming interfaces (APIs) to show how to publish and subscribe.

Request execution

Use try/catch when working with the C# SDK.

If a request has invalid parameters (for example, a missing required field), the SDK throws an exception. If the request reaches the server but fails (server error or network issue), the error details are available in the returned status.

try
{
    PNResult<PNPublishResult> publishResponse = await pubnub.Publish()
        .Message("Why do Java developers wear glasses? Because they can't C#.")
        .Channel("my_channel")
        .ExecuteAsync();

    PNStatus status = publishResponse.Status;

    Console.WriteLine("Server status code : " + status.StatusCode.ToString());
}
catch (Exception ex)
{
    Console.WriteLine($"Request can't be executed due to error: {ex.Message}");
}

Publish​

publish() sends a message to all channel subscribers. PubNub replicates the message across its points of presence and delivers it to all subscribed clients on that channel.

  • Initialize PubNub with the publishKey.
  • You don't need to subscribe to publish to a channel.
  • You can't publish to multiple channels at the same time.

Method(s)​

To Publish a message you can use the following method(s) in the C# SDK:

pubnub.Publish()
        .Message(object)
        .Channel(string)
        .ShouldStore(bool)
        .Meta(Dictionary<string, object>)
        .UsePOST(bool)
        .Ttl(int)
        .QueryParam(Dictionary<string,object>)
        .CustomMessageType(string)
* required
ParameterDescription
Message *
Type: object
The payload.
Channel *
Type: string
Destination of the Message (channel ID).
ShouldStore
Type: bool
Store in history.
If ShouldStore is not specified, then the history configuration on the key is used.
Meta
Type: Dictionary<string, object>
Meta data object which can be used with the filtering ability.
UsePOST
Type: bool
Use POST to Publish.
Ttl
Type: int
Set a per message time to live in storage.
  1. If ShouldStore = true, and Ttl = 0, the message is stored with no expiry time.
  2. If ShouldStore = true and Ttl = X (X is an Integer value), the message is stored with an expiry time of X hours unless you have message retention set to Unlimited on your keyset configuration in the Admin Portal.
  3. If ShouldStore = false, the Ttl parameter is ignored.
  4. If Ttl is not specified, then expiration of the message defaults back to the expiry value for the key.
QueryParam
Type: Dictionary<string, object>
Dictionary object to pass name/value pairs as query string params with PubNub URL request for debug purpose.
CustomMessageType
Type: string
A case-sensitive, alphanumeric string from 3 to 50 characters describing the business-specific label or category of the message. Dashes - and underscores _ are allowed. The value cannot start with special characters or the string pn_ or pn-.

Examples: text, action, poll.
Sync
Type: Command
Block the thread, exception thrown if something goes wrong.

This parameter is deprecated and will be removed in a future version. Please use the Execute parameter instead.
Async
Type: PNCallback
PNCallback of type PNPublishResult.

This parameter is deprecated and will be removed in a future version. Please use the ExecuteAsync parameter instead.
Execute
Type: PNCallback
PNCallback of type PNPublishResult.
ExecuteAsync
Type: None
Returns Task<PNResult<PNPublishResult>>.

Sample code​

Reference code
This example is a self-contained code snippet ready to be run. It includes necessary imports and executes methods with console logging. Use it as a reference when working with other examples in this document.

Publish a message to a channel​


Subscribe to the channel

Before running the above publish example, either using the Debug Console or in a separate script running in a separate terminal window, subscribe to the same channel that is being published to.

Returns​

The Publish() operation returns a PNResult<PNPublishResult> which contains the following properties:

Property NameTypeDescription
Result
PNPublishResult
Returns a PNPublishResult object.
Status
PNStatus
Returns a PNStatus object.

PNPublishResult contains the following properties:

Property NameTypeDescription
Timetoken
long
Returns a long representation of the timetoken when the message was published.

Other examples​

Publish a message to a channel synchronously​


Publish with metadata​


Store the published message for 10 hours​


Publish a Mobile Push payload​


For more details, refer to Mobile Push.

Fire​

The fire endpoint sends a message to Functions event handlers and Illuminate. The message goes directly to handlers registered on the target channel and triggers their execution. The handler can read the request body. Messages sent via fire() aren't replicated to subscribers and aren't stored in history.

Method(s)​

To Fire a message you can use the following method(s) in the C# SDK:

pubnub.Fire()
        .Message(object)
        .Channel(string)
        .Meta(Dictionary<string, object>)
        .UsePOST(bool)
        .QueryParam(Dictionary<string,object>)
* required
ParameterDescription
Message *
Type: object
The payload.
Channel *
Type: string
Destination of the message (channel ID).
Meta
Type: Dictionary<string, object>
Meta data object which can be used with the filtering ability.
UsePOST
Type: bool
Use POST to Publish.
QueryParam
Type: Dictionary<string, object>
Dictionary object to pass name/value pairs as query string params with PubNub URL request for debug purpose.
Sync
Type: Command
Block the thread, exception thrown if something goes wrong.

This parameter is deprecated and will be removed in a future version. Please use the Execute parameter instead.
Async
Type: PNCallback
PNCallback of type PNPublishResult.

This parameter is deprecated and will be removed in a future version. Please use the ExecuteAsync parameter instead.
Execute
Type: PNCallback
PNCallback of type PNPublishResult.
ExecuteAsync
Type: None
Returns Task<PNResult<PNPublishResult>>.

Sample code​

Fire a message to a channel​


Signal​

The signal() function sends a signal to all subscribers of a channel.

Signals have a payload limit of 64 bytes. The limit applies to the payload, not the URI or headers. For a larger payload, contact support.

Method(s)​

To Signal a message you can use the following method(s) in the C# SDK:

pubnub.Signal()
        .Message(object)
        .Channel(string)
        .CustomMessageType(string)
* required
ParameterDescription
Message *
Type: object
The payload.
Channel *
Type: string
Destination of the Message (channel ID).
CustomMessageType
Type: string
A case-sensitive, alphanumeric string from 3 to 50 characters describing the business-specific label or category of the message. Dashes - and underscores _ are allowed. The value cannot start with special characters or the string pn_ or pn-.

Examples: text, action, poll.

Sample code​

Signal a message to a channel​


Response​

Property NameTypeDescription
Timetoken
long
Returns a long representation of the timetoken when the message was signaled.

Subscribe​

The subscribe function opens a TCP socket to PubNub. It then listens for messages and events on a specified entity or set of entities. To subscribe, configure the appropriate subscribeKey during initialization.

Conceptual overview

For more general information about subscriptions, refer to Subscriptions.

Entities are first-class citizens that provide access to their encapsulated application programming interfaces (APIs). You can subscribe using the PubNub client object or directly on a specific entity:

A newly subscribed client receives messages after the subscribe() call completes.

Subscription scope​

Subscription objects let you attach listeners for specific real-time update types. Your app receives messages and events through those listeners. There are two types:

  • Subscription: created from an entity and scoped to that entity (for example, a particular channel)
  • SubscriptionSet: created from the PubNub client and scoped to the client (for example, all subscriptions created on a single pubnub object). A set can include one or more subscriptions.

The event listener is a single point through which your app receives all the messages, signals, and events in the entities you subscribed to. For information on adding event listeners, refer to Event listeners.

Create a subscription​

An entity-level Subscription receives messages and events only for the entity used to create it. Use multiple entity-level Subscriptions to handle different message or event types per channel.

Keep a strong reference

You should keep a strong reference to every created subscription/subscription set because they must stay in memory to listen for updates. If you create a Subscription or SubscriptionSet and don't keep a strong reference, the .NET garbage collector (GC) may collect it after your code finishes executing, and you will stop receiving updates.

// entity-based, local-scoped
Channel firstChannel = pubnub.Channel("first");

Subscription subscription = firstChannel.Subscription(SubscriptionOptions options);
* required
ParameterDescription
options
Type: SubscriptionOptions
Subscription behavior configuration.

Create a subscription set​

A client-level SubscriptionSet receives messages and events across all entities. Use a single SubscriptionSet to handle similar message or event types across channels.

Keep a strong reference

You should keep a strong reference to every created subscription/subscription set because they must stay in memory to listen for updates. If you create a Subscription or SubscriptionSet and don't keep a strong reference, the .NET garbage collector (GC) may collect it after your code finishes executing, and you will stop receiving updates.

// client-based, general-scoped
SubscriptionSet subscriptionSet = pubnub.SubscriptionSet(
   channels: string[],
   channelGroups: string[],
   options: SubscriptionOptions
)
* required
ParameterDescription
channels *
Type: string[]
One or more channels to create a subscription of. Either channels or channelGroups is required.
channelGroups *
Type: string[]
One or more channels to create a subscription of. Either channels or channelGroups is required.
options
Type: SubscriptionOptions
Subscription behavior configuration.
Add/remove sets

You can add and remove subscriptions to create new sets. Refer to the Other examples section for more information.

SubscriptionOptions​

SubscriptionOptions is an enum. Available properties include:

OptionDescription
ReceivePresenceEvents
Whether presence updates for userIds should be delivered through the listener streams.

For information on how to receive presence events and what those events are, refer to Presence Events.

Method(s)​

Subscription and SubscriptionSet use the same subscribe<object>() method.

Subscribe​

To subscribe, you can use the following method in the C# SDK:

subscription.Subscribe<object>(SubscriptionCursor cursor)
* required
ParameterDescription
cursor
Type: SubscriptionCursor
Cursor from which to return any available cached messages. Message retrieval with cursor is not guaranteed and should only be considered a best-effort service. A cursor consists of a timetoken and region: cursor: { Timetoken: long?; Region: int? }

If you pass any primitive type, the SDK converts them into SubscriptionCursor but if their value is not a 17-digit number or a string with numeric characters, the provided value will be ignored.
Sample code​

Other examples​
Create a subscription set from two subscriptions​

Returns​

The subscribe() method doesn't have a return value.

Entities​

Entities are subscribable objects for which you can receive real-time updates (messages, events, etc).

Create channels​

This method returns a local Channel entity.

pubnub.Channel(String)
* required
ParameterDescription
Channel *
Type: String
The name of the channel to create a subscription of.

Sample code​


Create channel groups​

This method returns a local ChannelGroup entity.

pubnub.ChannelGroup(String)
* required
ParameterDescription
ChannelGroup *
Type: String
The name of the channel group to create a subscription of.

Sample code​


Create channel metadata​

This method returns a local ChannelMetadata entity.

pubnub.ChannelMetadata(String)
* required
ParameterDescription
ChannelMetadata *
Type: String
The String identifier of the channel metadata object to create a subscription of.

Sample code​


Create user metadata​

This method returns a local UserMetadata entity.

pubnub.UserMetadata(String)
* required
ParameterDescription
UserMetadata *
Type: String
The String identifier of the user metadata object to create a subscription of.

Sample code​


Event listeners​

Messages and events are received in your app using a listener. This listener allows a single point to receive all messages, signals, and events.

You can attach listeners to the instances of Subscription, SubscriptionSet, and, in the case of the connection status, the PubNub client.

Add listeners​

You can implement multiple listeners with the onEvent closure or register an event-specific listener that receives only a selected type, like message or file.

Method(s)​


Sample code​


Add connection status listener​

The PubNub client has a listener dedicated to handling connection status updates.

Client scope

This listener is only available on the PubNub object.

Method(s)​

pubnub.AddListener(listener)

Sample code​


Returns​

The subscription status. For information about available statuses, refer to SDK statuses.

Unsubscribe​

Stop receiving real-time updates from a Subscription or a SubscriptionSet.

Method(s)​

subscription.Unsubscribe<object>()

subscriptionSet.Unsubscribe<object>()

Sample code​


Returns​

None

Unsubscribe all​

Stop receiving real-time updates from all data streams and remove the entities associated with them.

Client scope

This method is only available on the PubNub object.

Method(s)​

pubnub.UnsubscribeAll<object>()

Sample code​


Returns​

None

Subscribe (old)​

Not recommended

The use of this method is discouraged. Use Subscribe instead.

Receive messages (old)​

Your app receives messages and events via event listeners. The event listener is a single point through which your app receives all the messages, signals, and events that are sent in any channel you are subscribed to.

For more information about adding a listener, refer to the Event Listeners section.

Description (old)​

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 ID. To subscribe to a channel ID the client must send the appropriate SubscribeKey at initialization.

By default a newly subscribed client will only receive messages published to the channel after the Subscribe() call completes. If a client gets disconnected from a channel, it can automatically attempt to reconnect to that channel ID and retrieve any available messages that were missed during that period. This can be achieved by setting ReconnectionPolicy to PNReconnectionPolicy.LINEAR, when initializing the client.

Unsubscribing from all channels

Unsubscribing from all channels, and then subscribing to a new channel Y is not the same as subscribing to channel Y and then unsubscribing from the previously-subscribed channel(s). Unsubscribing from all channels resets the last-received timetoken and thus, there could be some gaps in the subscription that may lead to message loss.

Method(s) (old)​

To Subscribe to a channel you can use the following method(s) in the C# SDK:

pubnub.Subscribe<string>()
        .Channels(Array)
        .ChannelGroups(Array)
        .WithTimetoken(long)
        .WithPresence()
        .QueryParam(Dictionary<string,object>)
        .Execute()
* required
ParameterDescription
Channels
Type: Array
Subscribe to Channels, Either Channels or ChannelGroups is required.
ChannelGroups
Type: Array
Subscribe to ChannelGroups, Either Channels or ChannelGroups is required.
WithTimetoken
Type: long
Pass a Timetoken.
WithPresence
Type: Command
Also subscribe to related presence information.
QueryParam
Type: Dictionary<string, object>
Dictionary object to pass name/value pairs as query string params with PubNub URL request for debug purpose.
Execute *
Type: Command
Command that will Execute Subscribe.

Sample code (old)​

Subscribe to a channel:


Event listeners

The response of the call is handled by adding a Listener. Please see the Listeners section for more details. Listeners should be added before calling the method.

Returns (old)​

PNMessageResult

PNMessageResult<T> is returned in the Listeners

The Subscribe() operation returns a PNStatus which contains the following operations:

Property NameTypeDescription
Category
PNStatusCategory
Details of PNStatusCategory.
Error
bool
This is true if an error occurred in the execution of the operation.
ErrorData
PNErrorData
Error data of the exception (if Error is true)
StatusCode
int
Status code of the excution.
Operation
PNOperationType
Operation type of the request.
AffectedChannels
List<string>
A list of affected channels in the operation.
AffectedChannelGroups
List<string>
A list of affected channel groups in the operation.

The Subscribe() operation returns a PNMessageResult<T> for messages which contains the following operations:

Property NameTypeDescription
Message
object
The message sent on the channel ID.
Subscription
string
The channel group or wildcard subscription match (if exists).
Channel
string
The channel ID for which the message belongs.
Timetoken
long
Timetoken for the message.
UserMetadata
object
User metadata.

The Subscribe() operation returns a PNPresenceEventResult from presence which contains the following operations:

Property NameTypeDescription
Event
string
Events like join, leave, timeout, state-change, interval.
Uuid
string
UUID for the event.
Timestamp
long
Timestamp for the event.
Occupancy
int
Current occupancy.
State
Dictionary
State of the UUID.
Subscription
string
The channel group or wildcard subscription match (if exists).
Channel
string
The channel ID for which the message belongs.
Timetoken
long
Timetoken of the message.
UserMetadata
object
User metadata.
Join
string[]
List of channels when the event is interval.
Timeout
string[]
List of channels when the event is interval.
Leave
string[]
List of channels when the event is interval.
HereNowRefresh
bool
Flag to indicate whether HereNow fetch is needed.

Other examples (old)​

Basic subscribe with logging


Subscribing to multiple channels

Subscribe to multiple channels using Multiplexing. The example uses an array of channel names.

Alternative subscription methods

You can also use Wildcard Subscribe and Channel Groups to subscribe to multiple channels at a time. To use these features, the Stream Controller add-on must be enabled on your keyset in the Admin Portal.


Subscribing to a Presence channel​
Requires Presence

This method requires that the Presence add-on is enabled for your key in the Admin Portal.

For information on how to receive presence events and what those events are, refer to Presence Events.

For any given channel there is an associated Presence channel. You can subscribe directly to the channel by appending -pnpres to the channel name. For example the channel named my_channel would have the presence channel named my_channel-pnpres.


Sample Responses (old)​
Join event (old)​
{
    "Event": "join",
    "Uuid": "175c2c67-b2a9-470d-8f4b-1db94f90e39e",
    "Timestamp": 1345546797,
    "Occupancy": 2,
    "State": null,
    "Channel":" my_channel",
    "Subscription": "",
    "Timetoken": 15034141109823424,
    "UserMetadata": null,
    "Join": null,
    "Timeout": null,
    "Leave": null,
    "HereNowRefresh": false
}
Leave event (old)​
{
    "Event": "leave",
    "Uuid": "175c2c67-b2a9-470d-8f4b-1db94f90e39e",
    "Timestamp": 1345546797,
    "Occupancy": 1,
    "State": null,
    "Channel": "my_channel",
    "Subscription": "",
    "Timetoken": 15034141109823424,
    "UserMetadata": null,
    "Join": null,
    "Timeout": null,
    "Leave": null,
    "HereNowRefresh": false
}
Timeout event (old)​
{
    "Event": "timeout",
    "Uuid": "175c2c67-b2a9-470d-8f4b-1db94f90e39e",
    "Timestamp": 1345546797,
    "Occupancy": 0,
    "State": null,
    "Channel": "my_channel",
    "Subscription": "",
    "Timetoken": 15034141109823424,
    "UserMetadata": null,
    "Join": null,
    "Timeout": null,
    "Leave": null,
    "HereNowRefresh": false
}
State change event (old)​
{
    "Event": "state-change",
    "Uuid": "175c2c67-b2a9-470d-8f4b-1db94f90e39e",
    "Timestamp": 1345546797,
    "Occupancy": 1,
    "State": {
        "isTyping": true
    },
    "Channel": "my_channel",
    "Subscription": "",
    "Timetoken": 15034141109823424,
    "UserMetadata": null,
    "Join": null,
    "Timeout": null,
    "Leave": null,
show all 17 lines
Interval event (old)​
{
    "Event": "interval",
    "Uuid": "175c2c67-b2a9-470d-8f4b-1db94f90e39e",
    "Timestamp": <unix timestamp>,
    "Occupancy": <# users in channel>,
    "State": null,
    "Channel": "my_channel",
    "Subscription": "",
    "Timetoken": 15034141109823424,
    "UserMetadata": null,
    "Join": null,
    "Timeout": null,
    "Leave": null,
    "HereNowRefresh": false
}

When a channel is in interval mode with presence_deltas pnconfig flag enabled, the interval message may also include the following fields which contain an array of changed UUIDs since the last interval message.

  • joined
  • left
  • timedout

For example, this interval message indicates there were 2 new UUIDs that joined and 1 timed out UUID since the last interval:

{
    "Event": "interval",
    "Uuid": "175c2c67-b2a9-470d-8f4b-1db94f90e39e",
    "Timestamp": <unix timestamp>,
    "Occupancy": <# users in channel>,
    "State": null,
    "Channel": "my_channel",
    "Subscription": "",
    "Timetoken": 15034141109823424,
    "UserMetadata": null,
    "Join": ["uuid2", "uuid3"],
    "Timeout": ["uuid1"],
    "Leave": null,
    "HereNowRefresh": false
}

If the full interval message is greater than 30KB (since the max publish payload is ∼32KB), none of the extra fields will be present. Instead there will be a here_now_refresh boolean field set to true. This indicates to the user that they should do a hereNow request to get the complete list of users present in the channel.

{
    "Event": "interval",
    "Uuid": "175c2c67-b2a9-470d-8f4b-1db94f90e39e",
    "Timestamp": <unix timestamp>,
    "Occupancy": <# users in channel>,
    "State": null,
    "Channel": "my_channel",
    "Subscription": "",
    "Timetoken": 15034141109823424,
    "UserMetadata": null,
    "Join": null,
    "Timeout": null,
    "Leave": null,
    "HereNowRefresh": true
}
Wildcard subscribe to channels (old)​
Requires Stream Controller add-on

This method requires that the Stream Controller add-on is enabled for your key in the Admin Portal (with Enable Wildcard Subscribe checked). Read the support page on enabling add-on features on your keys.

Wildcard subscribes allow the client to subscribe to multiple channels using wildcard. For example, 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 (.).


Wildcard grants and revokes

Only one level (a.*) of wildcarding is supported. If you grant on * or a.b.*, the grant will treat * or a.b.* as a single channel named either * or a.b.*. You can also revoke permissions from multiple channels using wildcards but only if you previously granted permissions using the same wildcards. Wildcard revokes, similarly to grants, only work one level deep, like a.*.

Subscribing with state (old)​
Requires Presence

This method requires that the Presence add-on is enabled for your key in the Admin Portal.

For information on how to receive presence events and what those events are, refer to Presence Events.

Required User ID

Always set the UUID to uniquely identify the user or device that connects to PubNub. This UUID should be persisted, and should remain unchanged for the lifetime of the user or the device. If you don't set the UUID, you won't be able to connect to PubNub.


Subscribe to a channel group (old)​
Requires Stream Controller add-on

This method requires that the Stream Controller add-on is enabled for your key in the Admin Portal. Read the support page on enabling add-on features on your keys.


Subscribe to the Presence channel of a channel group (old)​
Requires Stream Controller and Presence add-ons

This method requires both the Stream Controller and Presence add-ons are enabled for your key in the Admin Portal. Read the support page on enabling add-on features on your keys.


Subscribe with a custom type (old)​

C# supports subscribing with custom types. However only one type of message can be subscribed for a given channel. If you want to subscribe different types of messages for the same channel, then subscribing using the generic type as string is the recommended option.


Event listeners (old)​

You can be notified of connectivity status, message and presence notifications via the listeners.

Listeners should be added before calling the method.

Method 1 to add listener (old)​

Method 2 to add listener (old)​

Remove listeners (old)​

Listener status events (old)​
CategoryDescription
PNNetworkIssuesCategory
The SDK is not able to reach the PubNub Data Stream Network because the machine or device are not connected to Internet or this has been lost, your ISP (Internet Service Provider) is having to troubles or perhaps or the SDK is behind of a proxy.
PNUnknownCategory
PubNub SDK could return this Category if the captured error is insignificant client side error or not known type at the time of SDK development.
PNBadRequestCategory
PubNub C# SDK will send PNBadRequestCategory when some parameter is missing like subscribe key, publish key.
PNTimeoutCategory
Processing has failed because of request time out.
PNReconnectedCategory
SDK was able to reconnect to pubnub.
PNConnectedCategory
SDK subscribed with a new mix of channels (fired every time the channel / channel group mix changed).

Unsubscribe (old)​

Not recommended

The use of this method is discouraged. Use Unsubscribe instead.

When subscribed to a single channel, this function causes the client to issue a leave from the channel and close any open socket to the PubNub Network. For multiplexed channels, the specified channel(s) will be removed and the socket remains open until there are no more channels remaining in the list.

Unsubscribing from all channels

Unsubscribing from all channels, and then subscribing to a new channel Y is not the same as subscribing to channel Y and then unsubscribing from the previously-subscribed channel(s). Unsubscribing from all channels resets the last-received timetoken and thus, there could be some gaps in the subscription that may lead to message loss.

Method(s) (old)​

To Unsubscribe from a channel you can use the following method(s) in the C# SDK:

pubnub.Unsubscribe<string>()
        .Channels(Array)
        .ChannelGroups(Array)
        .QueryParam(Dictionary<string,object>)
        .Execute()
* required
ParameterDescription
Channels
Type: Array
Unsubscribe to channels, Either Channels or ChannelGroups is required
ChannelGroups
Type: Array
Unsubscribe to channel groups, Either channels or channelGroup is required
QueryParam
Type: Dictionary<string, object>
Dictionary object to pass name/value pairs as query string params with PubNub URL request for debug purpose.
Execute *
Type: Command
Command that will execute Unsubscribe.

Sample code (old)​

Unsubscribe from a channel:


Event listeners

The response of the call is handled by adding a Listener. Please see the Listeners section for more details. Listeners should be added before calling the method.

Response (old)​

The Unsubscribe() operation returns a PNStatus. The output below demonstrates the response to a successful call:

{
    "Category": "PNDisconnectedCategory",
    "ErrorData": null,
    "Error": false,
    "StatusCode": 200,
    "Operation": "PNUnsubscribeOperation",
    "TlsEnabled": false,
    "Uuid": null,
    "AuthKey": null,
    "Origin": "ps.pndsn.com",
    "ClientRequest": null,
    "AffectedChannels": ["my_channel"],
    "AffectedChannelGroups": []
}

Other examples (old)​

Unsubscribing from multiple channels (old)​
Requires Stream Controller add-on

This method requires that the Stream Controller add-on is enabled for your key in the Admin Portal. Read the support page on enabling add-on features on your keys.


Example response (old)​
{
    "Category": "PNDisconnectedCategory",
    "ErrorData": null,
    "Error": false,
    "StatusCode": 200,
    "Operation": "PNUnsubscribeOperation",
    "TlsEnabled": false,
    "Uuid": null,
    "AuthKey": null,
    "Origin": "ps.pndsn.com",
    "ClientRequest": null,
    "AffectedChannels": ["ch1","ch2","ch3"],
    "AffectedChannelGroups": ["cg1","cg2","cg3"]
}
Unsubscribe from a channel group (old)​

Example response (old)​
{
    "Category": "PNDisconnectedCategory",
    "ErrorData": null,
    "Error": false,
    "StatusCode": 200,
    "Operation": "PNUnsubscribeOperation",
    "TlsEnabled": false,
    "Uuid": null,
    "AuthKey": null,
    "Origin": "ps.pndsn.com",
    "ClientRequest": null,
    "AffectedChannels": [],
    "AffectedChannelGroups": ["cg1","cg2","cg3"]
}

Unsubscribe all (old)​

Not recommended

The use of this method is discouraged. Use Unsubscribe All instead.

Unsubscribe from all channels and all channel groups

Method(s) (old)​

pubnub.UnsubscribeAll<string>()
        .QueryParam(Dictionary<string,object>)
* required
ParameterDescription
QueryParam
Type: Dictionary<string, object>
Dictionary object to pass name/value pairs as query string params with PubNub URL request for debug purpose.

Sample code (old)​


Returns (old)​

None

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