# Server-Sent Events (SSE)
Server-Sent Events (SSE) is a protocol for sending real-time updates from a server to a client over a single HTTP connection. Your flows can both consume SSE streams (using `Http Fetch Streamed` and expose SSE endpoints to send events to connected clients (using various functions in the `Http Server-Sent Events` module).
## Consuming SSE Endpoints
An SSE stream can be consumed using [`Http Fetch Streamed`](/midio-docs/built-in-nodes/http.md#fetchstreamed) to initiate a request, and then `Parse SSE Stream` to extract messages one at a time as they arrive. Notice that after handling each event, we loop back to the `Parse SSE Stream` function, which then lets us handle the next message. When the `stream closed` trigger fires, we don't loop back but just print a message to the log.
## Serving SSE Endpoints
You can respond with an SSE stream from your own endpoints by first calling `Start SSE Response`, and then call `Send SSE Event` as many times as you like with the data you want to transmit. The example above sends each word in the string one at a time.
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