Pubnub在ios聊天

Question

There is project which have chat feature which is been done by using PubNub. I had gone through the tutorial provided by PubNub and had integrated the pubnub.framework and CocoaLumberjack in my project. And had added the coded as shown in this tutorial

My questions are:

1. Do i have to create different channel to chat with the different friends? Or how the channel in the PubNub will work? I want to do only one-one chat. I don't want to implement any group chats. As per my study from using PubNub for multi users chatting every user have their own channel. But in that case how can I load the unread message count or messages when I am offline.

2. What is the process to install the PubNub server in my backend server? I am using backend as PHP Laravel.

Answer 1

1. you are free to create an unlimited number of channels, so for 1-1 chats, every user is subscribed to their own private channel. to chat with you, I publish a message to your private channel. here is a write-up that outlines this in more detail. for short periods of being offline (less than 10 mins), you can rely on the catch-up mechanism (make sure you configure this). for retrieving the actual messages while you were offline, you can use the history() function of Storage & Playback. retrieving only the count of unread messages requires logic on your end... perhaps keeping count of the number of messages published for each channel in your backend database, and then clients can make a REST call to your backend to retrieve this count.

2. PubNub has a PHP SDK you can use... what do you plan on having your backend server do?