Server-Sent Events (SSE) Example

SSE payloads with httpx.sse.EventWriter, parsed back with httpx.sse.EventParser. See examples/sseServer.zig.

zig

fn sseHandler(ctx: *httpx.Context) anyerror!httpx.Response {
    var out = std.ArrayList(u8).empty;
    var writer = httpx.sse.EventWriter.init(ctx.allocator);
    try writer.writeEvent(&out, &[_][]const u8{"Hello, SSE!"}, "message", 1, null);
    return .{
        .status = 200,
        .body = out.items,
        .contentType = "text/event-stream; charset=utf-8",
    };
}

Parsed events carry eventType, data, id, and retryMs.

Run

bash

zig build run-sse-server

Checklist

[x] SSE events use W3C wire format (event:, id:, data:)
[x] Server returns Content-Type: text/event-stream
[x] Client receives all events in order