初始化SSE服务端项目

routes/push.js

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+/**
+ * @file SSE流路由处理器
+ * @author Yk <yk_9001@icloud.com>
+ * @createdAt 2025-07-01
+ * @lastModifiedAt 2025-07-01
+ * @description 处理SSE连接
+ */
+
+const express = require('express');
+const clients = require('../lib/clients');
+
+const router = express.Router();
+
+router.post('/', (req, res) => {
+    const { message, clientId } = req.body;
+
+    if (!message) {
+        return res.status(400).json({ error: 'Message is required' });
+    }
+
+    const data = { message, time: new Date().toISOString() };
+
+    if (clientId) {
+        const clientRes = clients.get(clientId);
+        if (!clientRes) {
+            return res.status(404).json({ error: 'Client not found' });
+        }
+
+        clientRes.write(`data: ${JSON.stringify(data)}\n\n`);
+        return res.json({ message: 'Message delivered', clientId });
+    }
+
+    const count = clients.broadcast(data);
+    return res.json({ message: 'Message broadcasted', clients: count });
+});
+
+module.exports = router;

routes/stream.js

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+/**
+ * @file SSE流路由处理器
+ * @author Yk <yk_9001@icloud.com>
+ * @createdAt 2025-07-01
+ * @lastModifiedAt 2025-07-01
+ * @description 处理SSE连接建立和维持
+ */
+
+const express = require('express');
+const { v4: uuidV4 } = require('uuid');
+const { setupSSEHeaders } = require('../lib/sse');
+const clients = require('../lib/clients');
+
+const router = express.Router();
+
+router.get('/', (req, res) => {
+    const clientId = req.query.clientId || uuidV4();
+
+    setupSSEHeaders(res);
+
+    // 立即发送确认
+    res.write(`data: ${JSON.stringify({
+        status: 'connected',
+        clientId,
+        time: new Date().toISOString()
+    })}\n\n`);
+
+    clients.add(clientId, res);
+
+    req.on('close', () => {
+        clients.remove(clientId);
+    });
+});
+
+module.exports = router;