Agora Real-time Messaging Overview
The Agora RTM (Real-time Messaging) SDK provides global messaging cloud service with high reliability, low latency, and high concurrency. You can use the RTM SDK to quickly implement real-time messaging scenarios.
Functions
The RTM SDK supports the following functions:
Peer-to-peer and channel messaging
Send and receive messages with text, image, file, expression, and custom format. You can perform one-to-one chat or group chat. You can also perform status synchronization.
User and channel attributes
Add, delete, update, and get user and channel attributes.
Channel member count and member list
Get the member count of one or multiple channels. Get the member list of a channel.
User online status
Get or subscribe to the online status of a specified user.
Call invitation
Send and receive call invitation.
Features
The RTM SDK has the following features:
Global deployment
The real-time network service covers more than 200 countries and regions across the globe.
Low latency
The global average latency is less than 200 ms. The average latency within the same region is less than 100 ms.
High concurrency
There is no limit to the number of concurrent online users. The RTM SDK supports billion-scale concurrency at the system level and million-scale concurrency at the channel level.
High reliability
Reliable keepalive mechanism with distributed servers. The message delivery rate is 100% when the packet loss rate reaches 70%.
Multi-platform support
Supports the following platforms:
- iOS 6.0+
- RTM SDK 1.4.3 or higher: Android 5.0+ (arm64, armv7, x86, x86-64)
- Earlier than RTM SDK 1.4.3: Android 4.1+ (arm64, armv7, x86, x86-64)
- macOS 10.10+
- Windows 7+ (x86, x86-64)
- Linux
- Web (Chrome 49+, Firefox 52+, Safari 9+, Internet Explorer 11+)
- Unity 2017 or later
- RESTful API
Reference
When integrating the Agora RTM SDK, you can also refer to the following articles:
