> For the complete documentation index, see [llms.txt](https://archive-ko.docs.klaytn.foundation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://archive-ko.docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.rpc/net.md).

# caver.rpc.net

`caver.rpc.net`는 `net` 네임 스페이스를 가진 JSON-RPC API를 호출합니다.

## caver.rpc.net.getNetworkId <a href="#caver-rpc-net-getnetworkid" id="caver-rpc-net-getnetworkid"></a>

```javascript
caver.rpc.net.getNetworkId([callback])
```

Returns the network identifier (network ID) of the Klaytn Node.

**Parameters**

| Name     | Type     | Description                                                                                                |
| -------- | -------- | ---------------------------------------------------------------------------------------------------------- |
| callback | function | (optional) Optional callback, returns an error object as the first parameter and the result as the second. |

**Return Value**

`Promise` returns `number`

| Type   | Description |
| ------ | ----------- |
| number | 네트워크 ID입니다. |

**Example**

```javascript
> caver.rpc.net.getNetworkId().then(console.log)
1001
```

## caver.rpc.net.isListening <a href="#caver-rpc-net-islistening" id="caver-rpc-net-islistening"></a>

```javascript
caver.rpc.net.isListening([callback])
```

Returns `true` if the Klaytn Node is actively listening for network connections.

**Parameters**

| Name     | Type     | Description                                                                                                |
| -------- | -------- | ---------------------------------------------------------------------------------------------------------- |
| callback | function | (optional) Optional callback, returns an error object as the first parameter and the result as the second. |

**Return Value**

`Promise` returns `boolean`

| Type    | Description                               |
| ------- | ----------------------------------------- |
| boolean | `true` when listening, otherwise `false`. |

**Example**

```javascript
> caver.rpc.net.isListening().then(console.log)
true
```

## caver.rpc.net.getPeerCount <a href="#caver-rpc-net-getpeercount" id="caver-rpc-net-getpeercount"></a>

```javascript
caver.rpc.net.getPeerCount([callback])
```

Returns the number of peers currently connected to the Klaytn Node.

**Parameters**

| Name     | Type     | Description                                                                                                |
| -------- | -------- | ---------------------------------------------------------------------------------------------------------- |
| callback | function | (optional) Optional callback, returns an error object as the first parameter and the result as the second. |

**Return Value**

`Promise` returns `string`

| Type   | Description                    |
| ------ | ------------------------------ |
| string | 연결된 피어의 개수입니다. 이 값은 16진수 값입니다. |

**Example**

```javascript
> caver.rpc.net.getPeerCount().then(console.log)
0x3
```

## caver.rpc.net.getPeerCountByType <a href="#caver-rpc-net-getpeercountbytype" id="caver-rpc-net-getpeercountbytype"></a>

```javascript
caver.rpc.net.getPeerCountByType([callback])
```

Returns the number of connected nodes by type and the total number of connected nodes with key/value pairs.

**Parameters**

| Name     | Type     | Description                                                                                                |
| -------- | -------- | ---------------------------------------------------------------------------------------------------------- |
| callback | function | (optional) Optional callback, returns an error object as the first parameter and the result as the second. |

**Return Value**

`Promise` returns `object`

| Type   | Description                                                                           |
| ------ | ------------------------------------------------------------------------------------- |
| object | The number of connected peers by type as well as the total number of connected peers. |

**Example**

```javascript
> caver.rpc.net.getPeerCountByType().then(console.log)
{ en: 1, pn: 2, total: 3 }
```


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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://archive-ko.docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.rpc/net.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.