Server Sent Events

Server Sent Events (SSE)

Brandon Barrett DenverScript, June 16, 2018

• Well defined, long loved connection over http(s) ish
• Neslted between websockets and web requesting
  • Examples: long polling and other retry techniques

Server sent events are like Websockets because...

• Stays open
• gives updates automatically
• a lightweight approach to broadcasting to clients

Unlike Websockets because...

• You can't push messages back upstream
• Don't have much support

How They Work

• ?

Pros

• Easy to implement a handshake (no separate server!)
• No firewall dance because they're HTTP
• Enforce regularity
• Don't require a socket server
• Can be a progressive upgrade