chore: import upstream snapshot with attribution

2026-07-13 12:10:27 +08:00
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+# MCP SSE Polling Demo Client
+
+Demonstrates client-side auto-reconnect for the SSE polling pattern (SEP-1699).
+
+## Features
+
+- Connects to SSE polling demo server
+- Automatically reconnects when server closes SSE stream
+- Resumes from Last-Event-ID to avoid missing messages
+- Respects server-provided retry interval
+
+## Usage
+
+```bash
+# First start the server:
+uv run mcp-sse-polling-demo --port 3000
+
+# Then run this client:
+uv run mcp-sse-polling-client --url http://localhost:3000/mcp
+
+# Custom options:
+uv run mcp-sse-polling-client --url http://localhost:3000/mcp --items 20 --checkpoint-every 5
+```
+
+## Options
+
+- `--url`: Server URL (default: <http://localhost:3000/mcp>)
+- `--items`: Number of items to process (default: 10)
+- `--checkpoint-every`: Checkpoint interval (default: 3)
+- `--log-level`: Logging level (default: DEBUG)