SSE Streaming
This page explains how Server-Sent Events (SSE) responses are detected and displayed live.
Detection
Streaming mode starts when the response Content-Type contains text/event-stream; only the response matters, whether the request sends an Accept: text/event-stream header makes no difference.
### SSE Stream
GET https://sse.dev/test
Accept: text/event-stream
###
Live Rendering
| Behavior | Description |
|---|---|
| Line-by-line append | bufio.Scanner redraws the info pane on every line; raw lines are shown as-is (including data: and event: prefixes) |
| Auto-scroll | Scrolls to the bottom after each redraw |
| Display limit | Only the last 100 lines are kept on screen |
| Header line | After the status and headers, Duration: elapsed | Events: count updates on every line |
Events is the number of lines read divided by 2, assuming each event is one data line plus one blank line; multi-line data: or events with event:/id: lines make the count diverge from the real event count.
Completion
When the server closes the connection, the hint bar shows (status) METHOD URL | total duration; on a read error it shows a red Stream error: ... and keeps what was received in the info pane.
Timeout
The HTTP client Timeout is fixed at 120 seconds and covers reading the body, so a stream running longer than 120 seconds is cut off and ends with Stream error. See Known Limitations.