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class="docMainContainer_Q970"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_zHA2"><div class="theme-doc-version-banner alert alert--warning margin-bottom--md" role="alert"><div>This is unreleased documentation for Apache APISIX® -- Cloud-Native API Gateway and AI Gateway <b>Next</b> version.</div><div class="margin-top--md">For up-to-date documentation, see the <b><a href="/docs/apisix/plugins/response-rewrite/">latest version</a></b> (3.14).</div></div><div class="docItemContainer_oiyr"><article><span class="theme-doc-version-badge badge badge--secondary">Version: Next</span><div class="tocCollapsible_aw-L theme-doc-toc-mobile tocMobile_Tx6Y"><button type="button" class="clean-btn tocCollapsibleButton_zr6a">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>response-rewrite</h1></header><h2><a aria-hidden="true" tabindex="-1" class="anchor anchor__h2 anchorWithHideOnScrollNavbar_3ly5" id="description"></a>Description<a class="hash-link" href="#description" title="Direct link to heading">#</a></h2><p>The <code>response-rewrite</code> Plugin offers options to rewrite responses that APISIX and its Upstream services return to clients. With the Plugin, you can modify HTTP status codes, request headers, response body, and more.</p><p>For instance, you can use this Plugin to:</p><ul><li>Support <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS" target="_blank" rel="noopener noreferrer">CORS</a> by setting <code>Access-Control-Allow-*</code> headers.</li><li>Indicate redirection by setting HTTP status codes and <code>Location</code> header.</li></ul><div class="admonition admonition-tip alert alert--success"><div class="admonition-heading"><h5><span class="admonition-icon"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="16" viewBox="0 0 12 16"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span>tip</h5></div><div class="admonition-content"><p>You can also use the <a href="/docs/apisix/next/plugins/redirect/">redirect</a> Plugin to set up redirects.</p></div></div><h2><a aria-hidden="true" tabindex="-1" class="anchor anchor__h2 anchorWithHideOnScrollNavbar_3ly5" id="attributes"></a>Attributes<a class="hash-link" href="#attributes" title="Direct link to heading">#</a></h2><table><thead><tr><th>Name</th><th>Type</th><th>Required</th><th>Default</th><th>Valid values</th><th>Description</th></tr></thead><tbody><tr><td>status_code</td><td>integer</td><td>False</td><td></td><td>[200, 598]</td><td>New HTTP status code in the response. If unset, falls back to the original status code.</td></tr><tr><td>body</td><td>string</td><td>False</td><td></td><td></td><td>New response body. The <code>Content-Length</code> header would also be reset. Should not be configured with <code>filters</code>.</td></tr><tr><td>body_base64</td><td>boolean</td><td>False</td><td>false</td><td></td><td>If true, decode the response body configured in <code>body</code> before sending to client, which is useful for image and protobuf decoding. Note that this configuration cannot be used to decode Upstream response.</td></tr><tr><td>headers</td><td>object</td><td>False</td><td></td><td></td><td>Actions to be executed in the order of <code>add</code>, <code>remove</code>, and <code>set</code>.</td></tr><tr><td>headers.add</td><td>array[string]</td><td>False</td><td></td><td></td><td>Headers to append to requests. If a header already present in the request, the header value will be appended. Header value could be set to a constant, or one or more <a href="https://nginx.org/en/docs/http/ngx_http_core_module.html" target="_blank" rel="noopener noreferrer">Nginx variables</a>.</td></tr><tr><td>headers.set</td><td>object</td><td>False</td><td></td><td></td><td>Headers to set to requests. If a header already present in the request, the header value will be overwritten. Header value could be set to a constant, or one or more<a href="https://nginx.org/en/docs/http/ngx_http_core_module.html" target="_blank" rel="noopener noreferrer">Nginx variables</a>.</td></tr><tr><td>headers.remove</td><td>array[string]</td><td>False</td><td></td><td></td><td>Headers to remove from requests.</td></tr><tr><td>vars</td><td>array[array]</td><td>False</td><td></td><td></td><td>An array of one or more matching conditions in the form of <a href="https://github.com/api7/lua-resty-expr#operator-list" target="_blank" rel="noopener noreferrer">lua-resty-expr</a>.</td></tr><tr><td>filters</td><td>array[object]</td><td>False</td><td></td><td></td><td>List of filters that modify the response body by replacing one specified string with another. Should not be configured with <code>body</code>.</td></tr><tr><td>filters.regex</td><td>string</td><td>True</td><td></td><td></td><td>RegEx pattern to match on the response body.</td></tr><tr><td>filters.scope</td><td>string</td><td>False</td><td>"once"</td><td>["once","global"]</td><td>Scope of substitution. <code>once</code> substitutes the first matched instance and <code>global</code> substitutes globally.</td></tr><tr><td>filters.replace</td><td>string</td><td>True</td><td></td><td></td><td>Content to substitute with.</td></tr><tr><td>filters.options</td><td>string</td><td>False</td><td>"jo"</td><td></td><td>RegEx options to control how the match operation should be performed. See <a href="https://github.com/openresty/lua-nginx-module#ngxrematch" target="_blank" rel="noopener noreferrer">Lua NGINX module</a> for the available options.</td></tr></tbody></table><h2><a aria-hidden="true" tabindex="-1" class="anchor anchor__h2 anchorWithHideOnScrollNavbar_3ly5" id="examples"></a>Examples<a class="hash-link" href="#examples" title="Direct link to heading">#</a></h2><p>The examples below demonstrate how you can configure <code>response-rewrite</code> on a Route in different scenarios.</p><div class="admonition admonition-note alert alert--secondary"><div class="admonition-heading"><h5><span class="admonition-icon"><svg xmlns="http://www.w3.org/2000/svg" width="14" height="16" viewBox="0 0 14 16"><path fill-rule="evenodd" d="M6.3 5.69a.942.942 0 0 1-.28-.7c0-.28.09-.52.28-.7.19-.18.42-.28.7-.28.28 0 .52.09.7.28.18.19.28.42.28.7 0 .28-.09.52-.28.7a1 1 0 0 1-.7.3c-.28 0-.52-.11-.7-.3zM8 7.99c-.02-.25-.11-.48-.31-.69-.2-.19-.42-.3-.69-.31H6c-.27.02-.48.13-.69.31-.2.2-.3.44-.31.69h1v3c.02.27.11.5.31.69.2.2.42.31.69.31h1c.27 0 .48-.11.69-.31.2-.19.3-.42.31-.69H8V7.98v.01zM7 2.3c-3.14 0-5.7 2.54-5.7 5.68 0 3.14 2.56 5.7 5.7 5.7s5.7-2.55 5.7-5.7c0-3.15-2.56-5.69-5.7-5.69v.01zM7 .98c3.86 0 7 3.14 7 7s-3.14 7-7 7-7-3.12-7-7 3.14-7 7-7z"></path></svg></span>note</h5></div><div class="admonition-content"><p>You can fetch the <code>admin_key</code> from <code>config.yaml</code> and save to an environment variable with the following command:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 bash"><pre tabindex="0" class="prism-code language-bash codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token assign-left variable" style="color:#36acaa">admin_key</span><span class="token operator" style="color:#393A34">=</span><span class="token variable" style="color:#36acaa">$(</span><span class="token variable" style="color:#36acaa">yq </span><span class="token variable string" style="color:#e3116c">'.deployment.admin.admin_key[0].key'</span><span class="token variable" style="color:#36acaa"> conf/config.yaml </span><span class="token variable operator" style="color:#393A34">|</span><span class="token variable" style="color:#36acaa"> </span><span class="token variable function" style="color:#d73a49">sed</span><span class="token variable" style="color:#36acaa"> </span><span class="token variable string" style="color:#e3116c">'s/"//g'</span><span class="token variable" style="color:#36acaa">)</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div></div></div><h3><a aria-hidden="true" tabindex="-1" class="anchor anchor__h3 anchorWithHideOnScrollNavbar_3ly5" id="rewrite-header-and-body"></a>Rewrite Header and Body<a class="hash-link" href="#rewrite-header-and-body" title="Direct link to heading">#</a></h3><p>The following example demonstrates how to add response body and headers, only to responses with <code>200</code> HTTP status codes.</p><p>Create a Route with the <code>response-rewrite</code> Plugin:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 shell"><pre tabindex="0" class="prism-code language-shell codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">curl</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"http://127.0.0.1:9180/apisix/admin/routes"</span><span class="token plain"> -X PUT </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> -H </span><span class="token string" style="color:#e3116c">"X-API-KEY: </span><span class="token string variable" style="color:#36acaa">${admin_key}</span><span class="token string" style="color:#e3116c">"</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> -d </span><span class="token string" style="color:#e3116c">'{</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "id": "response-rewrite-route",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "methods": ["GET"],</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "uri": "/headers",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "plugins": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "response-rewrite": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "body": "{\"code\":\"ok\",\"message\":\"new json body\"}",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "headers": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "set": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "X-Server-id": 3,</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "X-Server-status": "on",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "X-Server-balancer-addr": "$balancer_ip:$balancer_port"</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> },</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "vars": [</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> [ "status","==",200 ]</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> ]</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> },</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "upstream": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "type": "roundrobin",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "nodes": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "httpbin.org:80": 1</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }'</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><p>Send a request to verify:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 shell"><pre tabindex="0" class="prism-code language-shell codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">curl</span><span class="token plain"> -i </span><span class="token string" style="color:#e3116c">"http://127.0.0.1:9080/headers"</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><p>You should receive a <code>HTTP/1.1 200 OK</code> response similar to the following:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 text"><pre tabindex="0" class="prism-code language-text codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token plain">...</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">X-Server-id: 3</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">X-Server-status: on</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">X-Server-balancer-addr: 50.237.103.220:80</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">{"code":"ok","message":"new json body"}</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><h3><a aria-hidden="true" tabindex="-1" class="anchor anchor__h3 anchorWithHideOnScrollNavbar_3ly5" id="rewrite-header-with-regex-filter"></a>Rewrite Header With RegEx Filter<a class="hash-link" href="#rewrite-header-with-regex-filter" title="Direct link to heading">#</a></h3><p>The following example demonstrates how to use RegEx filter matching to replace <code>X-Amzn-Trace-Id</code> for responses.</p><p>Create a Route with the <code>response-rewrite</code> Plugin:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 shell"><pre tabindex="0" class="prism-code language-shell codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">curl</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"http://127.0.0.1:9180/apisix/admin/routes"</span><span class="token plain"> -X PUT </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> -H </span><span class="token string" style="color:#e3116c">"X-API-KEY: </span><span class="token string variable" style="color:#36acaa">${admin_key}</span><span class="token string" style="color:#e3116c">"</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> -d </span><span class="token string" style="color:#e3116c">'{</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "id": "response-rewrite-route",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "methods": ["GET"],</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "uri": "/headers",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "plugins":{</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "response-rewrite":{</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "filters":[</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "regex":"X-Amzn-Trace-Id",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "scope":"global",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "replace":"X-Amzn-Trace-Id-Replace"</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> ]</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> },</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "upstream": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "type": "roundrobin",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "nodes": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "httpbin.org:80": 1</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }'</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><p>Send a request to verify:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 shell"><pre tabindex="0" class="prism-code language-shell codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">curl</span><span class="token plain"> -i </span><span class="token string" style="color:#e3116c">"http://127.0.0.1:9080/headers"</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><p>You should see a response similar to the following:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 text"><pre tabindex="0" class="prism-code language-text codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token plain">{</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> "headers": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> "Accept": "*/*",</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> "Host": "127.0.0.1",</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> "User-Agent": "curl/8.2.1",</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> "X-Amzn-Trace-Id-Replace": "Root=1-6500095d-1041b05e2ba9c6b37232dbc7",</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> "X-Forwarded-Host": "127.0.0.1"</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">}</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><h3><a aria-hidden="true" tabindex="-1" class="anchor anchor__h3 anchorWithHideOnScrollNavbar_3ly5" id="decode-body-from-base64"></a>Decode Body from Base64<a class="hash-link" href="#decode-body-from-base64" title="Direct link to heading">#</a></h3><p>The following example demonstrates how to Decode Body from Base64 format.</p><p>Create a Route with the <code>response-rewrite</code> Plugin:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 shell"><pre tabindex="0" class="prism-code language-shell codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">curl</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"http://127.0.0.1:9180/apisix/admin/routes"</span><span class="token plain"> -X PUT </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> -H </span><span class="token string" style="color:#e3116c">"X-API-KEY: </span><span class="token string variable" style="color:#36acaa">${admin_key}</span><span class="token string" style="color:#e3116c">"</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> -d </span><span class="token string" style="color:#e3116c">'{</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "id": "response-rewrite-route",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "methods": ["GET"],</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "uri": "/get",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "plugins":{</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "response-rewrite": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "body": "SGVsbG8gV29ybGQ=",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "body_base64": true</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> },</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "upstream": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "type": "roundrobin",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "nodes": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "httpbin.org:80": 1</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }'</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><p>Send a request to verify:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 shell"><pre tabindex="0" class="prism-code language-shell codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">curl</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"http://127.0.0.1:9080/get"</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><p>You should see a response of the following:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 text"><pre tabindex="0" class="prism-code language-text codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token plain">Hello World</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><h3><a aria-hidden="true" tabindex="-1" class="anchor anchor__h3 anchorWithHideOnScrollNavbar_3ly5" id="rewrite-response-and-its-connection-with-execution-phases"></a>Rewrite Response and Its Connection with Execution Phases<a class="hash-link" href="#rewrite-response-and-its-connection-with-execution-phases" title="Direct link to heading">#</a></h3><p>The following example demonstrates the connection between the <code>response-rewrite</code> Plugin and <a href="/apisix/key-concepts/plugins/#plugins-execution-lifecycle">execution phases</a> by configuring the Plugin with the <code>key-auth</code> Plugin, and see how the response is still rewritten to <code>200 OK</code> in the case of an unauthenticated request.</p><p>Create a Consumer <code>jack</code>:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 shell"><pre tabindex="0" class="prism-code language-shell codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">curl</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"http://127.0.0.1:9180/apisix/admin/consumers"</span><span class="token plain"> -X PUT </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> -H </span><span class="token string" style="color:#e3116c">"X-API-KEY: </span><span class="token string variable" style="color:#36acaa">${admin_key}</span><span class="token string" style="color:#e3116c">"</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> -d </span><span class="token string" style="color:#e3116c">'{</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "username": "jack"</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }'</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><p>Create <code>key-auth</code> credential for the Consumer:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 shell"><pre tabindex="0" class="prism-code language-shell codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">curl</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"http://127.0.0.1:9180/apisix/admin/consumers/jack/credentials"</span><span class="token plain"> -X PUT </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> -H </span><span class="token string" style="color:#e3116c">"X-API-KEY: </span><span class="token string variable" style="color:#36acaa">${admin_key}</span><span class="token string" style="color:#e3116c">"</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> -d </span><span class="token string" style="color:#e3116c">'{</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "id": "cred-jack-key-auth",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "plugins": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "key-auth": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "key": "jack-key"</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }'</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><p>Create a Route with <code>key-auth</code> and configure <code>response-rewrite</code> to rewrite the response status code and body:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 shell"><pre tabindex="0" class="prism-code language-shell codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">curl</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"http://127.0.0.1:9180/apisix/admin/routes"</span><span class="token plain"> -X PUT </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> -H </span><span class="token string" style="color:#e3116c">"X-API-KEY: </span><span class="token string variable" style="color:#36acaa">${admin_key}</span><span class="token string" style="color:#e3116c">"</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> -d </span><span class="token string" style="color:#e3116c">'{</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "id": "response-rewrite-route",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "uri": "/get",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "plugins": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "key-auth": {},</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "response-rewrite": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "status_code": 200,</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "body": "{\"code\": 200, \"msg\": \"success\"}"</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> },</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "upstream": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "type": "roundrobin",</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "nodes": {</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "httpbin.org:80": 1</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> }'</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><p>Send a request to the Route with the valid key:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 shell"><pre tabindex="0" class="prism-code language-shell codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">curl</span><span class="token plain"> -i </span><span class="token string" style="color:#e3116c">"http://127.0.0.1:9080/get"</span><span class="token plain"> -H </span><span class="token string" style="color:#e3116c">'apikey: jack-key'</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><p>You should receive an <code>HTTP/1.1 200 OK</code> response of the following:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 text"><pre tabindex="0" class="prism-code language-text codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token plain">{"code": 200, "msg": "success"}</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><p>Send a request to the Route without any key:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 shell"><pre tabindex="0" class="prism-code language-shell codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">curl</span><span class="token plain"> -i </span><span class="token string" style="color:#e3116c">"http://127.0.0.1:9080/get"</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><p>You should still receive an <code>HTTP/1.1 200 OK</code> response of the same, instead of <code>HTTP/1.1 401 Unauthorized</code> from the <code>key-auth</code> Plugin. This shows that the <code>response-rewrite</code> Plugin still rewrites the response.</p><p>This is because <strong>header_filter</strong> and <strong>body_filter</strong> phase logics of the <code>response-rewrite</code> Plugin will continue to run after <a href="https://openresty-reference.readthedocs.io/en/latest/Lua_Nginx_API/#ngxexit" target="_blank" rel="noopener noreferrer"><code>ngx.exit</code></a> in the <strong>access</strong> or <strong>rewrite</strong> phases from other plugins.</p><p>The following table summarizes the impact of <code>ngx.exit</code> on execution phases.</p><table><thead><tr><th>Phase</th><th>rewrite</th><th>access</th><th>header_filter</th><th>body_filter</th></tr></thead><tbody><tr><td><strong>rewrite</strong></td><td>ngx.exit</td><td></td><td></td><td></td></tr><tr><td><strong>access</strong></td><td>×</td><td>ngx.exit</td><td></td><td></td></tr><tr><td><strong>header_filter</strong></td><td>✓</td><td>✓</td><td>ngx.exit</td><td></td></tr><tr><td><strong>body_filter</strong></td><td>✓</td><td>✓</td><td>×</td><td>ngx.exit</td></tr></tbody></table><p>For example, if <code>ngx.exit</code> takes places in the <strong>rewrite</strong> phase, it will interrupt the execution of <strong>access</strong> phase but not interfere with <strong>header_filter</strong> and <strong>body_filter</strong> phases.</p></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="/edit#https://github.com/apache/apisix/edit/master/docs/en/latest/plugins/response-rewrite.md" 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