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PubNub Dart SDK
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If a message is sent to a channel which is not created yet and then we subscribe to it then we don't get the message which was sent. #67

Closed rahulrmishra closed 3 years ago

rahulrmishra commented 3 years ago

Hello, I have an issue where if I send a message to channel which is not created yet and then subscribe to it then I don't get the message which I had sent. I use this -> pubnub: ^4.0.0-beta.1

In the earlier vesion -> pubnub: ^3.2.0, I used to get the message which I had sent

These are the logs --->

If I send this message to channel (Which is not created yet) Message ==> {channelID: CHANNELID, channelMsg: true, msgType: text, text: Hello, uuid: UUID}

And then subscribe to it immediately these are the only messages that I recieve after immediately subscribing to that channel. ---> {source: objects, version: 2.0, event: set, type: membership, data: {channel: {id: CHANNELID}, custom: {clearChatTimeToken: 16323101227810000, lastMessage: Hello, lastMessageType: text, lastMsgTimeToken: 16323101315670000, lastReadTimeToken: 16323101315680000, receiverUUID: UUID}}}
{source: objects, version: 2.0, event: set, type: membership, data: {channel: {id: CHANNELID}, custom: {lastMessage: Hello, lastMessageType: text, lastMsgTimeToken: 16323101315670000, receiverUUID: UUID}, uuid: {id: UUID}}}

If I send a message to a channel which I am already subscribed to, then these are the logs ->

Message ==>

{channelID: CHANNELID, channelMsg: true, msgType: text, text: Already subscribed, uuid: UUID}

Recieved messages (Listened by listener) {source: objects, version: 2.0, event: set, type: membership, data: {channel: {id: CHANNELID}, custom: {clearChatTimeToken: 16323042591580000, lastMessage: Already subscribed, lastMessageType: text, lastMsgTimeToken: 16323116797790000, lastReadTimeToken: 16323116797800000, receiverUUID: UUID}, uuid: {id: UUID}}} {source: objects, version: 2.0, event: set, type: membership, data: {channel: {id: CHANNELID}, custom: {clearChatTimeToken: 16323042591580000, lastMessage: Already subscribed, lastMessageType: text, lastMsgTimeToken: 16323116797790000, lastReadTimeToken: 16323075006560000, receiverUUID: UUID}, uuid: {id: UUID}}}

are commented 3 years ago

We cannot guarantee that you will receive a message that is sent before you subscribe. You can use the subscription.whenStarts promise to figure out when a subscription is set up properly so you can start sending messages tho.