Server-sent events
Server-Sent Events is a web standard for streaming text-based event updates one way from a server to a client over an HTTP connection.
AI Agents in Action, Second Edition
Server-Sent Events is an HTTP-based protocol for streaming event updates from a server to a client over a persistent connection.
- How it is used
- Connects agents and LLM applications to independently hosted MCP servers over HTTP.
- How deep it goes
- Explains deployment choices and configuration examples, but stops short of detailing the SSE protocol internals.
- Examples
- Uses MCP server commands, a localhost SSE URL, deployment diagrams, comparison tables, and transport-switching exercises.
- What you can do after
- Operate/configure MCP servers over SSE and switch an agent from STDIO using a server URL.
Read how AI Agents in Action, Second Edition explains server-sent events →
Go in Practice, Second Edition
Server-sent events are a web mechanism for continuously delivering text-based event updates from a server to a client over HTTP.
- How it is used
- Deploys persistent HTTP connections for lightweight, real-time, server-to-client notifications without polling.
- How deep it goes
- Explains the communication model and demonstrates a Go file-watching service, without developing bidirectional messaging.
- Examples
- Demonstrates a Go website that watches filesystem changes and reports file operations and byte lengths in real time.
- What you can do after
- Build a Go SSE service with fsnotify that streams directory changes to browser clients.
Read how Go in Practice, Second Edition explains server-sent events →
Related concepts
- MCP serverused by · An MCP server is software that implements the Model Context Protocol to expose capabilities or information to compatible clients.
- WebSocketalternative to · WebSocket is a network protocol that enables persistent, bidirectional, full-duplex communication between endpoints over a single TCP connection.
- HTTPuses · HTTP is a standardized application-layer protocol that defines request-and-response messages for transferring resource representations between networked systems.
- ASP.NET Core SignalRused by · ASP.NET Core SignalR is a Microsoft library for real-time, bidirectional communication between servers and connected clients.
- FastMCPused by · FastMCP is a Python library for building Model Context Protocol servers and exposing capabilities such as callable tools.
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