SignalR Deep Dive: Building Servers
summary
Builds a minimal SignalR-compatible server in Go that implements the negotiate endpoint, accepts WebSocket upgrades, and parses the JSON hub protocol (handshake, invocation, completion, ping). Messages are framed using a record separator (ASCII 30) and the server echoes invocations, tracks connections in a sync map, and sends simple broadcasts; it omits groups, cancellation, and full error handling. Also demonstrates offloading connections to Azure SignalR Service by returning a service endpoint and token during negotiate.
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chapters (12)
- 0:00Start
- 0:54What is SignalR?
- 5:40Supporting multiple clients
- 6:57Transports: Long polling
- 7:26Transports: WebSockets
- 7:40Negotiate request
- 8:16Hub protocol message types
- 47:16Further considerations
- 48:24Messaging
- 49:56Scale-out
- 50:33Azure Signal Service
- 53:17Azure Functions
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