![]() ![]() That means writing code that monitors the connections and initiates the reconnection if needed. No auto-reconnection:If a WebSocket connection drops, you’ll need to reestablish it manually.Similarly, while WebSocket offers a good trade-off between latency and delivery guarantees, streaming video and audio can usually stand to drop some data, meaning that the lowest latency rich media protocols offer lower latencies in exchange for fewer guarantees that individual packets of data will reach the client. Less suited to audio and video:While it is possible to stream audio and video using a WebSocket connection, the high bandwidth of those data types makes them better suited to protocols that establish multiple concurrent connections.Widespread:All major browsers and various libraries have built-in support for WebSocket, which makes uptake easier for your end users.Unlike HTTP which needs headers and other metadata, once a connection is established, WebSocket sends only the data itself. Low latency:As an event driven protocol, WebSocket pushes data to the client or server at the moment it is available.Efficient use of server resources: WebSocket’s persistent connections avoid the overhead of repeated HTTP request/response cycles.Bidirectional and full-duplex: Ideal for chat, messages use a single connection to go in both directions, and at the same time, between client and server.So, how does it shape up? Pros of WebSocket Instead, it is a realtime messaging protocol on top of which you can build chat. However, it’s worth noting that WebSocket is not in itself a chat protocol. That makes it suited to chat and instant messaging because it is designed from the ground up to support ongoing, two way connections between servers and clients. WebSocket is an event-driven, low latency streaming data protocol that is ideal for streaming data in realtime. Let’s look at some of the most popular protocols for instant messaging. Security:Whether the protocol has built-in security, such as encrypting messages in transit, or requires that you bring in other tools to handle security.Scalability:How well the protocol tackles increased data flows, clients, and so on.Reliability and latency: The measures the protocol takes to ensure delivery and how that impacts the speed with which messages are exchanged.The types of data it can support:Whether it supports text only or streaming audio and video as well.How clients connect with each other: Client-server or peer to peer.When considering a protocol, it’s useful to consider: ![]() Eight instant messaging and chat protocols to considerĬhoosing the right protocol, or protocols, is one of the first architectural decisions you’ll take when planning out a chat or instant messaging service. Chat and instant messaging protocols offer similar compromises, depending on your use case. TCP is slower but promises that data will arrive in the right order, whereas UDP is faster and makes no such guarantees. TCP and UDP, for example, are two protocols that operate at the transport layer, each with different trade-offs. Here’s a quick refresher: implementing a computer network requires protocols that operate at each level from the fibre or copper of the physical layer right up to the application layer. One useful way to think about this is in comparison with the OSI seven-layer networking model. For example, IRC is a protocol that appears to cover everything but that also lacks many of the modern conveniences that users expect. The second takes a little more consideration. Some protocols aim to take care of everything and provide an end-to-end solution, while others have a laser-like focus on solving just one aspect. How thoroughly it tackles those parts of the problem.Which parts of the problem that protocol tackles.But there are two dimensions that separate one protocol from another: At its most basic, a chat protocol needs to deliver messages between participants. One challenge of reviewing instant messaging and chat protocols is that many of them solve different problems or different parts of the problem. Instant messaging and chat protocols: An overview We’ll start with an overview of the landscape of web chat protocols, then a review of eight of the most common protocols, followed by how to get started with instant messaging and chat. In this article, we’re going to go deep and look at the protocols that power chat. As a product owner or developer, you’re almost spoiled for choice when it comes to deciding how to implement chat in your product. Chat and instant messaging are a key part of how many applications are driving product adoption, user engagement, and retention. ![]()
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