# WebSocket 流

 与 HTTP 不同，使用 WebSockets，当您需要特定信息时，您无需不断发出请求。WebSockets 会为您维护网络连接（如果操作正确）并监听更改。您可以在[**此处查看官方文档**](https://ethereum.org/ml/developers/tutorials/using-websockets/)**。**

{% tabs %}
{% tab title="WebSocket" %}

```
wscat -c wss://api.chainup.net/ws/ethereum/mainnet/<YOUR_API_KEY>
<  {"jsonrpc":  "2.0", "id": 0, "method":  "eth_gasPrice"}
<  {"jsonrpc": "2.0","id":0,"result":"0x6f56b59ac"}
```

{% endtab %}

{% tab title="Javascript" %}

<pre><code><strong>const Web3 = require('web3');
</strong>
const web3 = new Web3("wss://api.chainup.net/ws/ethereum/mainnet/&#x3C;YOUR_API_KEY>")

web3.eth.getBlockNumber().then(console.log) // -> 9022457

</code></pre>

{% endtab %}

{% tab title="Python" %}

```
from web3 import Web3

websocket_url='wss://api.chainup.net/ws/ethereum/mainnet/<YOUR_API_KEY>'
w3 = Web3(Web3.HTTPProvider(websocket_url))

# You can check if the connection is established using isConnected function.
w3.isConnected()

# Output: True
```

{% endtab %}
{% endtabs %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.chainupcloud.com/zhong-wen/qu-kuai-lian-api/ethereum/websocket-stream.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.