Message Reactions API for PubNub C# SDK

Add or remove actions on published messages to build features like receipts, reactions, or to associate custom metadata to messages. Clients can subscribe to a channel to receive message reaction events on that channel. They can also fetch past message reactions from Message Persistence independently or when they fetch original messages.

Terminology

All message reactions in code are collectively called message reactions in the docs and the term applies both to reacting to a message (through emojis) and acting on a message (by deleting it).

Add Message Reaction

Requires Message Persistence

This method requires that Message Persistence is enabled for your key in the Admin Portal.

Add an action on a published message. Returns PNAddMessageActionResult in the response.

Method(s)

To Add a Message Reaction you can use the following method(s) in the C# SDK:

pubnub.AddMessageAction()
        .Channel(string)
        .MessageTimetoken(long)
        .Action(PNMessageAction)

Parameter	Type	Required	Description
Channel	string	Yes	Specifies channel name to publish message reactions to.
MessageTimetoken	long	Yes	Timestamp when the actual message was created the message reaction belongs to.
Action	PNMessageAction	Yes	Specify the action you want to publish of type PNMessageAction.

PNMessageAction

Parameter	Type	Required	Description
Type	string	Yes	Message reaction's type.
Value	string	Yes	Message reaction's value.

Basic Usage

pubnub.AddMessageAction()
    .Channel("my_channel")
    .MessageTimetoken(5610547826969050)
    .Action(new PNMessageAction { Type = "reaction", Value = "smiley_face" })
    .Execute(new PNAddMessageActionResultExt((result, status) =>
    {
        //result is of type PNAddMessageActionResult.
    }));

Returns

{
    "MessageTimetoken":15610547826969050,
    "ActionTimetoken":15610547826970050,
    "Action":{
        "type":"reaction",
        "value":"smiley_face"
    },
    "Uuid":"user-456"
}

Remove Message Reaction

Requires Message Persistence

This method requires that Message Persistence is enabled for your key in the Admin Portal.

Remove a previously added action on a published message. Returns an empty response.

Method(s)

To Remove a Message Reaction you can use the following method(s) in the C# SDK:

pubnub.RemoveMessageAction()
        .Channel(string)
        .MessageTimetoken(long)
        .ActionTimetoken(long)
        .Uuid(string)

Parameter	Type	Required	Description
Channel	string	Yes	Specifies channel name to publish message reactions to.
MessageTimetoken	long	Yes	Publish timetoken of the original message
ActionTimetoken	long	Yes	Publish timetoken of the message reaction to be removed.
Uuid	string	Yes	UUID of the message.

Basic Usage

pubnub.RemoveMessageAction()
    .Channel("my_channel")
    .MessageTimetoken(15701761818730000)
    .ActionTimetoken(15701775691010000)
    .Uuid("mytestuuid")
    .Execute(new PNRemoveMessageActionResultExt((result, status) =>
    {
        //empty result of type PNRemoveMessageActionResult.
    }));

Returns

The RemoveMessageAction() operation returns a no actionable data.

Get Message Reactions

Requires Message Persistence

This method requires that Message Persistence is enabled for your key in the Admin Portal.

Get a list of message reactions in a channel. Returns a list of actions sorted by the action's timetoken in ascending order.

Truncated response

Number of message reactions in the response may be truncated when internal limits are hit. If the response is truncated, a more property will be returned with additional parameters. Send iterative calls to Message Persistence adjusting the parameters to fetch more message reactions.

Method(s)

To Get Message Reactions you can use the following method(s) in the C# SDK:

pubnub.GetMessageActions()
        .Channel(string)
        .Start(long)
        .End(long)
        .Limit(int)

Parameter	Type	Required	Default	Description
Channel	string	Yes		The channel name.
Start	long	Optional		Message Reaction timetoken denoting the start of the range requested (return values will be less than start).
End	long	Optional		Message Reaction timetoken denoting the end of the range requested (return values will be greater than or equal to end).
Limit	int	Optional	100	Specifies the number of actions to return in response. Default/Maximum is 100.

Basic Usage

pubnub.GetMessageActions()
    .Channel("my_channel")
    .Execute(new PNGetMessageActionsResultExt((result, status) =>
    {
        //result is of type PNGetMessageActionsResult.
    }));

Returns

{
"MessageActions":
    [{
    "MessageTimetoken":15610547826969050,
    "Action":{
        "type":"reaction",
        "value":"smiley_face"
    },
    "Uuid":"pn-5903a053-592c-4a1e-8bfd-81d92c962968",
    "ActionTimetoken":15717253483027900
    }],
"More": {
        "Start": 15610547826970050,
        "End": 15645905639093361,
        "Limit": 2

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