JSON API AsyncAPI
<span class="x2mdx-ref-breadcrumb-separator">›</span>
<a href="/zh/docs/canton/reference-json-api-asyncapi-reference-operations-v2-state-active-contracts-details">/v2/state/active-contracts</a>
<span class="x2mdx-ref-breadcrumb-separator">›</span>
<span>订阅</span>
</div>
<div class="x2mdx-ref-hero">
<p class="x2mdx-ref-eyebrow">/v2/state/active-contracts</p>
<h1 class="x2mdx-ref-title">订阅有效合约</h1>
<div class="x2mdx-ref-badges">
<span class="x2mdx-ref-badge x2mdx-ref-badge--protocol">WebSocket</span>
<span class="x2mdx-ref-badge x2mdx-ref-badge--linked">自 3.4 起</span>
<span class="x2mdx-ref-badge x2mdx-ref-badge--changed">更改为 3.5</span>
</div>
</div>
<div class="x2mdx-ref-operation-bar">
<span class="x2mdx-ref-operation-method x2mdx-ref-operation-method--subscribe">订阅</span>
/v2/state/active-contracts </code>
</div>
## 协议详细信息
<dl class="x2mdx-ref-meta-grid">
<div class="x2mdx-ref-meta-item">
<dt>协议</dt>
<dd>WebSocket</dd>
</div>
<div class="x2mdx-ref-meta-item">
<dt>频道</dt>
<dd>/v2/state/active-contracts</dd>
</div>
<div class="x2mdx-ref-meta-item">
<dt>行动</dt>
<dd>订阅</dd>
</div>
<div class="x2mdx-ref-meta-item">
<dt>操作 ID</dt>
<dd>onV2StateActive-contracts</dd>
</div>
<div class="x2mdx-ref-meta-item">
<dt>内容类型</dt>
<dd>应用程序/json</dd>
</div>
<div class="x2mdx-ref-meta-item">
<dt>有效负载</dt>
<dd>其中一个</dd>
</div>
</dl>
## 输入
## 输出
<div class="x2mdx-ref-panel">
<div class="x2mdx-ref-panel-head">
<h3>要么\_JsCantonError\_JsGetActiveContractsResponse</h3>
</div>
<dl class="x2mdx-ref-meta-grid">
<div class="x2mdx-ref-meta-item">
<dt>方向</dt>
<dd>服务器 -> 客户端</dd>
</div>
<div class="x2mdx-ref-meta-item">
<dt>消息</dt>
<dd>要么\_JsCantonError\_JsGetActiveContractsResponse</dd>
</div>
</dl>
<div class="x2mdx-ref-fields">
<div class="x2mdx-ref-field-row">
<div class="x2mdx-ref-field-main">
<code class="x2mdx-ref-field-name">代码</code>
<span class="x2mdx-ref-type-badge">字符串</span>
</div>
</div><div class="x2mdx-ref-field-row">
<div class="x2mdx-ref-field-main">
<code class="x2mdx-ref-field-name">原因</code>
<span class="x2mdx-ref-type-badge">字符串</span>
</div>
</div>
<div class="x2mdx-ref-field-row">
<div class="x2mdx-ref-field-main">
<code class="x2mdx-ref-field-name">上下文</code>
<span class="x2mdx-ref-type-badge">对象</span>
</div>
</div>
<div class="x2mdx-ref-field-row">
<div class="x2mdx-ref-field-main">
<code class="x2mdx-ref-field-name">错误类别</code>
<span class="x2mdx-ref-type-badge">字符串</span>
</div>
</div>
</div>
</div>
## 生命周期变化
<div class="x2mdx-ref-change-list">
<div class="x2mdx-ref-change-item">
<span class="x2mdx-ref-change-version">3.5</span>
<span class="x2mdx-ref-change-detail">频道描述已更新；发布更新的描述；发布已删除的必填字段：`eventFormat`；订阅说明已更新</span>
</div>
</div>
## 相关模式
<手风琴组>
<手风琴标题=“Either_JsCantonError_JsGetActiveContractsResponse”>
<div class="x2mdx-ref-schema" id="schema-v2-state-active-contracts-subscribe">
<div class="x2mdx-ref-fields">
<div class="x2mdx-ref-field-row">
<div class="x2mdx-ref-field-main">
<code class="x2mdx-ref-field-name">代码</code>
<span class="x2mdx-ref-type-badge">字符串</span>
</div>
</div>
<div class="x2mdx-ref-field-row">
<div class="x2mdx-ref-field-main">
<code class="x2mdx-ref-field-name">原因</code>
<span class="x2mdx-ref-type-badge">字符串</span>
</div>
</div>
<div class="x2mdx-ref-field-row">
<div class="x2mdx-ref-field-main">
<code class="x2mdx-ref-field-name">上下文</code>
<span class="x2mdx-ref-type-badge">对象</span>
</div>
</div>
<div class="x2mdx-ref-field-row">
<div class="x2mdx-ref-field-main">
<code class="x2mdx-ref-field-name">错误类别</code>
<span class="x2mdx-ref-type-badge">字符串</span>
</div>
</div>
</div>
</div>
</手风琴>
</手风琴组>
wscat
```bash wscat theme={"theme":{"light":"github-light","dark":"github-dark"}}
npx wscat -c <WEBSOCKET_URL>
```
</div>
</div>
<div className="x2mdx-ref-rail-panel">
<div className="x2mdx-ref-rail-code x2mdx-ref-rail-code--response">
<div className="x2mdx-ref-rail-head">
<span className="x2mdx-ref-rail-heading">消息</span>
<span className="x2mdx-ref-response-label">application/json</span>
</div>
```json message theme={"theme":{"light":"github-light","dark":"github-dark"}}
{
"code": "<string>",
"cause": "<string>",
"context": {},
"errorCategory": "<integer>"
}
```
</div>
</div>
本文由 CC Privacy Club 根据 Canton Network 官方文档（CC-BY-4.0）整理翻译，仅供学习；实现细节以官方最新版本为准。
