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SYS_WebSocket.send() method

Send data to the WebSocket server

Signature

function send(id: string, data: string | Blob | BufferSource, extensionUuid?: string): void;

Parameters

Parameter	Type	Description
id	string	Custom WebSocket ID
data	string | Blob | BufferSource	Data to send
extensionUuid	string	(Optional) Extension UUID. Generally it does not need to be specified. It only needs to be specified as another extension's UUID when you need to operate on a WebSocket connection established by another extension

Returns

void

Remarks

Note: This API requires the user to enable the extension external interaction permission, if not enabled, it will always throw Error

Example

// 1. 注册连接（本例的桥接服务对 ping 消息回 pong，用来演示完整收发回路）
eda.sys_WebSocket.register('嘉立创示例_发送', 'ws://127.0.0.1:49620', (event) => {
	console.log('收到服务器回复：', event.data);
}, () => {
	console.log('连接已建立');
});

// 2. 等待握手完成
await new Promise(r => setTimeout(r, 1500));

// 3. 发送数据（data 支持字符串、Blob、BufferSource，这里发 JSON 字符串）
eda.sys_WebSocket.send('嘉立创示例_发送', JSON.stringify({ type: 'ping', id: '嘉立创示例_发送' }));

// 4. 等待服务器回复进入 receiveMessageCallFn
await new Promise(r => setTimeout(r, 1500));

// 5. 演示完毕后关闭连接
eda.sys_WebSocket.close('嘉立创示例_发送');
console.log('已关闭连接');