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version</a></b> (3.14).</div></div><div class="docItemContainer_oiyr"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 3.12</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>gRPC Proxy</h1></header><p>proxying gRPC traffic: |
| gRPC client -> APISIX -> gRPC/gRPCS server</p><h2><a aria-hidden="true" tabindex="-1" class="anchor anchor__h2 anchorWithHideOnScrollNavbar_3ly5" id="parameters"></a>Parameters<a class="hash-link" href="#parameters" title="Direct link to heading">#</a></h2><ul><li><code>scheme</code>: the <code>scheme</code> of the route's upstream must be <code>grpc</code> or <code>grpcs</code>.</li><li><code>uri</code>: format likes /service/method, Example：/helloworld.Greeter/SayHello</li></ul><h3><a aria-hidden="true" tabindex="-1" class="anchor anchor__h3 anchorWithHideOnScrollNavbar_3ly5" id="example"></a>Example<a class="hash-link" href="#example" title="Direct link to heading">#</a></h3><h4><a aria-hidden="true" tabindex="-1" class="anchor anchor__h4 anchorWithHideOnScrollNavbar_3ly5" id="create-proxying-grpc-route"></a>create proxying gRPC route<a class="hash-link" href="#create-proxying-grpc-route" title="Direct link to heading">#</a></h4><p>Here's an example, to proxying gRPC service by specified route:</p><ul><li>attention: the <code>scheme</code> of the route's upstream must be <code>grpc</code> or <code>grpcs</code>.</li><li>attention: APISIX use TLS‑encrypted HTTP/2 to expose gRPC service, so need to <a href="/docs/apisix/3.12/certificate/">config SSL certificate</a></li><li>attention: APISIX also support to expose gRPC service with plaintext HTTP/2, which does not rely on TLS, usually used to proxy gRPC service in intranet environment</li><li>the grpc server example：<a href="https://github.com/api7/grpc_server_example" target="_blank" rel="noopener noreferrer">grpc_server_example</a></li></ul><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">$(</span><span class="token variable" style="color:#36acaa">yq </span><span class="token variable string" style="color:#e3116c">'.deployment.admin.admin_key[0].key'</span><span class="token variable" style="color:#36acaa"> conf/config.yaml </span><span class="token variable operator" style="color:#393A34">|</span><span class="token variable" style="color:#36acaa"> </span><span class="token variable function" style="color:#d73a49">sed</span><span class="token variable" style="color:#36acaa"> </span><span class="token variable string" style="color:#e3116c">'s/"//g'</span><span class="token variable" style="color:#36acaa">)</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div></div></div><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 shell"><pre tabindex="0" class="prism-code language-shell codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">curl</span><span class="token plain"> http://127.0.0.1:9180/apisix/admin/routes/1 -H </span><span class="token string" style="color:#e3116c">"X-API-KEY: </span><span class="token string variable" style="color:#36acaa">$admin_key</span><span class="token string" style="color:#e3116c">"</span><span class="token plain"> -X PUT -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">{</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "methods": ["POST", "GET"],</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "uri": "/helloworld.Greeter/SayHello",</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"> "scheme": "grpc",</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"> "127.0.0.1:50051": 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><h4><a aria-hidden="true" tabindex="-1" class="anchor anchor__h4 anchorWithHideOnScrollNavbar_3ly5" id="testing-http2-with-tlsencrypted"></a>testing HTTP/2 with TLS‑encrypted<a class="hash-link" href="#testing-http2-with-tlsencrypted" title="Direct link to heading">#</a></h4><p>Invoking the route created before：</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 plain">$ grpcurl -insecure -import-path /pathtoprotos -proto helloworld.proto -d </span><span class="token string" style="color:#e3116c">'{"name":"apisix"}'</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">127.0</span><span class="token plain">.0.1:9443 helloworld.Greeter.SayHello</span><br></span><span class="token-line" style="color:#393A34"><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"> </span><span class="token string" style="color:#e3116c">"message"</span><span class="token builtin class-name">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"Hello apisix"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_V-PD clean-btn">Copy</button></div></div><blockquote><p>grpcurl is a CLI tool, similar to curl, that acts as a gRPC client and lets you interact with a gRPC server. For installation, please check out the official <a href="https://github.com/fullstorydev/grpcurl#installation" target="_blank" rel="noopener noreferrer">documentation</a>.</p></blockquote><p>This means that the proxying is working.</p><h4><a aria-hidden="true" tabindex="-1" class="anchor anchor__h4 anchorWithHideOnScrollNavbar_3ly5" id="testing-http2-with-plaintext"></a>testing HTTP/2 with plaintext<a class="hash-link" href="#testing-http2-with-plaintext" title="Direct link to heading">#</a></h4><p>By default, the APISIX only listens to <code>9443</code> for TLS‑encrypted HTTP/2. You can support HTTP/2 with plaintext via the <code>node_listen</code> section under <code>apisix</code> in <code>conf/config.yaml</code>:</p><div class="codeBlockContainer_EiTO"><div class="codeBlockContent_X2I6 yaml"><pre tabindex="0" class="prism-code language-yaml codeBlock_UxnK thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_W6UD"><span class="token-line" style="color:#393A34"><span class="token key atrule" style="color:#00a4db">apisix</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"> </span><span class="token key atrule" style="color:#00a4db">node_listen</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"> </span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">port</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">9080</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">port</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">9081</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">enable_http2</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token boolean important" style="color:#36acaa">true</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>Invoking the route created before：</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 plain">$ grpcurl -plaintext -import-path /pathtoprotos -proto helloworld.proto -d </span><span class="token string" style="color:#e3116c">'{"name":"apisix"}'</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">127.0</span><span class="token plain">.0.1:9081 helloworld.Greeter.SayHello</span><br></span><span class="token-line" style="color:#393A34"><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"> </span><span class="token string" style="color:#e3116c">"message"</span><span class="token builtin class-name">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"Hello apisix"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</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>This means that the proxying is working.</p><h3><a aria-hidden="true" tabindex="-1" class="anchor anchor__h3 anchorWithHideOnScrollNavbar_3ly5" id="grpcs"></a>gRPCS<a class="hash-link" href="#grpcs" title="Direct link to heading">#</a></h3><p>If your gRPC service encrypts with TLS by itself (so called <code>gPRCS</code>, gPRC + TLS), you need to change the <code>scheme</code> to <code>grpcs</code>. The example above runs gRPCS service on port 50052, to proxy gRPC request, we need to use the configuration below:</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"> http://127.0.0.1:9180/apisix/admin/routes/1 -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"> -X PUT -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">{</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "methods": ["POST", "GET"],</span><br></span><span class="token-line" style="color:#393A34"><span class="token string" style="color:#e3116c"> "uri": "/helloworld.Greeter/SayHello",</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"> "scheme": "grpcs",</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"> "127.0.0.1:50052": 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></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/release/3.12/docs/en/latest/grpc-proxy.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_mS5F" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div 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