docs/en/latest/plugins/ocsp-stapling.md

---
title: ocsp-stapling
keywords:
  - Apache APISIX
  - Plugin
  - ocsp-stapling
description: This document contains information about the Apache APISIX ocsp-stapling Plugin.
---

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## Description

The `ocsp-stapling` Plugin dynamically sets the behavior of [OCSP stapling](https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_stapling) in Nginx.

## Enable Plugin

This Plugin is disabled by default. Modify the config file to enable the plugin:

```yaml title="./conf/config.yaml"
plugins:
  - ...
  - ocsp-stapling
```

After modifying the config file, reload APISIX or send an hot-loaded HTTP request through the Admin API to take effect:

:::note
You can fetch the `admin_key` from `config.yaml` and save to an environment variable with the following command:

```bash
admin_key=$(yq '.deployment.admin.admin_key[0].key' conf/config.yaml | sed 's/"//g')
```

:::

```shell
curl http://127.0.0.1:9180/apisix/admin/plugins/reload -H "X-API-KEY: $admin_key" -X PUT
```

## Attributes

The attributes of this plugin are stored in specific field `ocsp_stapling` within SSL Resource.

| Name           | Type                 | Required | Default       | Valid values | Description                                                                                   |
|----------------|----------------------|----------|---------------|--------------|-----------------------------------------------------------------------------------------------|
| enabled        | boolean              | False    | false         |              | Like the `ssl_stapling` directive, enables or disables OCSP stapling feature.                 |
| skip_verify    | boolean              | False    | false         |              | Like the `ssl_stapling_verify` directive, enables or disables verification of OCSP responses. |
| cache_ttl      | integer              | False    | 3600          | >= 60        | Specifies the expired time of OCSP response cache.                                            |

## Example usage

You should create an SSL Resource first, and the certificate of the server certificate issuer should be known. Normally the fullchain certificate works fine.

Create an SSL Resource as such:

```shell
curl http://127.0.0.1:9180/apisix/admin/ssls/1 \
-H "X-API-KEY: $admin_key" -X PUT -d '
{
    "cert" : "'"$(cat server.crt)"'",
    "key": "'"$(cat server.key)"'",
    "snis": ["test.com"],
    "ocsp_stapling": {
        "enabled": true
    }
}'
```

Next, establish a secure connection to the server, request the SSL/TLS session status, and display the output from the server:

```shell
echo -n "Q" | openssl s_client -status -connect localhost:9443 -servername test.com 2>&1 | cat
```

```
...
CONNECTED(00000003)
OCSP response:
======================================
OCSP Response Data:
    OCSP Response Status: successful (0x0)
...
```

To disable OCSP stapling feature, you can make a request as shown below:

```shell
curl http://127.0.0.1:9180/apisix/admin/ssls/1 \
-H "X-API-KEY: $admin_key" -X PUT -d '
{
    "cert" : "'"$(cat server.crt)"'",
    "key": "'"$(cat server.key)"'",
    "snis": ["test.com"],
    "ocsp_stapling": {
        "enabled": false
    }
}'
```

## Delete Plugin

Make sure all your SSL Resource doesn't contains `ocsp_stapling` field anymore. To remove this field, you can make a request as shown below:

```shell
curl http://127.0.0.1:9180/apisix/admin/ssls/1 \
-H "X-API-KEY: $admin_key" -X PATCH -d '
{
    "ocsp_stapling": null
}'
```

Modify the config file `./conf/config.yaml` to disable the plugin:

```yaml title="./conf/config.yaml"
plugins:
  - ...
  # - ocsp-stapling
```

After modifying the config file, reload APISIX or send an hot-loaded HTTP request through the Admin API to take effect:

```shell
curl http://127.0.0.1:9180/apisix/admin/plugins/reload -H "X-API-KEY: $admin_key" -X PUT
```