
    `);
    // Send notification (no id) to update with array parameters
    send(socket, `
        {"jsonrpc": "2.0", "method": "update", "params": [1,2,3,4,5]}
    `);
    // Send notification for non-existent method
    send(socket, `
        {"jsonrpc": "2.0", "method": "foobar"}
    `);
    // Request non-existent method with id
    send(socket, `
        {"jsonrpc": "2.0", "method": "foobar", "id": "1"}
    `);
    // Send malformed JSON to test error handling
    send(socket, `
        {"jsonrpc": "