const http = require("http");
const fs = require("fs");
const server = http.createServer((req, res) => {
if (req.url === "/events") {
// 设置响应头，指明使用 text/event-stream 类型
res.writeHead(200, {
"Content-Type": "text/event-stream",
"Cache-Control": "no-cache",
Connection: "keep-alive",
});
// 每隔一段时间向客户端发送一个 SSE 事件
const intervalId = setInterval(() => {
const data = JSON.stringify({ message: "This is a server-sent event." });
res.write(`data: ${data}\n\n`);
}, 1000);
// 当客户端关闭连接时清除定时器
req.on("close", () => {
clearInterval(intervalId);
});
} else {
res.writeHead(200, { "Content-Type": "text/html" });
// 返回一个包含 SSE 客户端的 HTML 页面
const html = fs.readFileSync("sse-client.html", "utf8");
res.end(html);
}
});
server.listen(8008, () => {
console.log("Server is running on port 8000");
});
<!DOCTYPE html>
<html>
<head>
<title>SSE Client</title>
</head>
<body>
<script>
const eventSource = new EventSource('/events');
eventSource.onmessage = function (event) {
console.log('Received event:', event.data);
};
</script>
</body>
</html>
