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menu__caret"></button></div></ul></ul></nav></div></div></aside><main class=docMainContainer_TBSr><div class="container padding-top--md padding-bottom--lg"><div class=row><div class="col docItemCol_VOVn"><div class=docItemContainer_Djhp><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label=Breadcrumbs><ul class=breadcrumbs><li class=breadcrumbs__item><a aria-label="Home page" class=breadcrumbs__link href=/><svg viewBox="0 0 24 24" class=breadcrumbHomeIcon_YNFT><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill=currentColor /></svg></a><li class=breadcrumbs__item><span class=breadcrumbs__link>Guide</span><li class=breadcrumbs__item><a class=breadcrumbs__link href=/docs/guide/csharp/><span>C#</span></a><li class="breadcrumbs__item breadcrumbs__item--active"><span class=breadcrumbs__link>gRPC Support</span></ul></nav><span class="theme-doc-version-badge badge badge--secondary">Version: 1.3.0</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type=button class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>gRPC Support</h1></header><p>Fory can generate C# gRPC service companions for schemas that define services. |
| The generated code uses normal gRPC clients, service bases, method descriptors, |
| metadata, deadlines, cancellations, and status codes, while request and response |
| objects are serialized with Fory instead of protobuf.</p> |
| <p>Use this mode when both RPC peers are generated from the same Fory IDL, |
| protobuf IDL, or FlatBuffers IDL and both sides expect Fory-encoded message |
| bodies. Use normal protobuf gRPC generation for APIs that must be consumed by |
| generic protobuf clients, reflection tools, or components that expect protobuf |
| message bytes.</p> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=add-dependencies>Add Dependencies<a href=#add-dependencies class=hash-link aria-label="Direct link to Add Dependencies" title="Direct link to Add Dependencies" translate=no></a></h2> |
| <p>The <code>Apache.Fory</code> package does not add gRPC dependencies. Add the gRPC packages |
| in the application that compiles or runs generated service companions.</p> |
| <p>Server project:</p> |
| <div class="language-xml codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-xml codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token tag punctuation" style=color:#393A34><</span><span class="token tag" style=color:#00009f>ItemGroup</span><span class="token tag punctuation" style=color:#393A34>></span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token tag punctuation" style=color:#393A34><</span><span class="token tag" style=color:#00009f>PackageReference</span><span class="token tag" style=color:#00009f> </span><span class="token tag attr-name" style=color:#00a4db>Include</span><span class="token tag attr-value punctuation attr-equals" style=color:#393A34>=</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag attr-value" style=color:#e3116c>Apache.Fory</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag" style=color:#00009f> </span><span class="token tag attr-name" style=color:#00a4db>Version</span><span class="token tag attr-value punctuation attr-equals" style=color:#393A34>=</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag attr-value" style=color:#e3116c>1.3.0</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag" style=color:#00009f> </span><span class="token tag punctuation" style=color:#393A34>/></span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token tag punctuation" style=color:#393A34><</span><span class="token tag" style=color:#00009f>PackageReference</span><span class="token tag" style=color:#00009f> </span><span class="token tag attr-name" style=color:#00a4db>Include</span><span class="token tag attr-value punctuation attr-equals" style=color:#393A34>=</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag attr-value" style=color:#e3116c>Grpc.AspNetCore</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag" style=color:#00009f> </span><span class="token tag attr-name" style=color:#00a4db>Version</span><span class="token tag attr-value punctuation attr-equals" style=color:#393A34>=</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag attr-value" style=color:#e3116c>2.71.0</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag" style=color:#00009f> </span><span class="token tag punctuation" style=color:#393A34>/></span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token tag punctuation" style=color:#393A34></</span><span class="token tag" style=color:#00009f>ItemGroup</span><span class="token tag punctuation" style=color:#393A34>></span><br/></div></code></pre></div></div> |
| <p>Client project:</p> |
| <div class="language-xml codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-xml codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token tag punctuation" style=color:#393A34><</span><span class="token tag" style=color:#00009f>ItemGroup</span><span class="token tag punctuation" style=color:#393A34>></span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token tag punctuation" style=color:#393A34><</span><span class="token tag" style=color:#00009f>PackageReference</span><span class="token tag" style=color:#00009f> </span><span class="token tag attr-name" style=color:#00a4db>Include</span><span class="token tag attr-value punctuation attr-equals" style=color:#393A34>=</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag attr-value" style=color:#e3116c>Apache.Fory</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag" style=color:#00009f> </span><span class="token tag attr-name" style=color:#00a4db>Version</span><span class="token tag attr-value punctuation attr-equals" style=color:#393A34>=</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag attr-value" style=color:#e3116c>1.3.0</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag" style=color:#00009f> </span><span class="token tag punctuation" style=color:#393A34>/></span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token tag punctuation" style=color:#393A34><</span><span class="token tag" style=color:#00009f>PackageReference</span><span class="token tag" style=color:#00009f> </span><span class="token tag attr-name" style=color:#00a4db>Include</span><span class="token tag attr-value punctuation attr-equals" style=color:#393A34>=</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag attr-value" style=color:#e3116c>Grpc.Core.Api</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag" style=color:#00009f> </span><span class="token tag attr-name" style=color:#00a4db>Version</span><span class="token tag attr-value punctuation attr-equals" style=color:#393A34>=</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag attr-value" style=color:#e3116c>2.71.0</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag" style=color:#00009f> </span><span class="token tag punctuation" style=color:#393A34>/></span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token tag punctuation" style=color:#393A34><</span><span class="token tag" style=color:#00009f>PackageReference</span><span class="token tag" style=color:#00009f> </span><span class="token tag attr-name" style=color:#00a4db>Include</span><span class="token tag attr-value punctuation attr-equals" style=color:#393A34>=</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag attr-value" style=color:#e3116c>Grpc.Net.Client</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag" style=color:#00009f> </span><span class="token tag attr-name" style=color:#00a4db>Version</span><span class="token tag attr-value punctuation attr-equals" style=color:#393A34>=</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag attr-value" style=color:#e3116c>2.71.0</span><span class="token tag attr-value punctuation" style=color:#393A34>"</span><span class="token tag" style=color:#00009f> </span><span class="token tag punctuation" style=color:#393A34>/></span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token tag punctuation" style=color:#393A34></</span><span class="token tag" style=color:#00009f>ItemGroup</span><span class="token tag punctuation" style=color:#393A34>></span><br/></div></code></pre></div></div> |
| <p><code>Grpc.Core.Api</code> is the API surface used by generated companions. Server and |
| client applications can choose their normal gRPC hosting or transport packages.</p> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=define-a-service>Define a Service<a href=#define-a-service class=hash-link aria-label="Direct link to Define a Service" title="Direct link to Define a Service" translate=no></a></h2> |
| <p>Service definitions can come from Fory IDL, protobuf IDL, or FlatBuffers |
| <code>rpc_service</code> definitions. A Fory IDL service looks like this:</p> |
| <div class="language-protobuf codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-protobuf codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>package</span><span class="token plain"> demo</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">greeter</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>option</span><span class="token plain"> csharp_namespace </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"Demo.Greeter"</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>message</span><span class="token plain"> </span><span class="token class-name">HelloRequest</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token builtin">string</span><span class="token plain"> name </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token number" style=color:#36acaa>1</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>message</span><span class="token plain"> </span><span class="token class-name">HelloReply</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token builtin">string</span><span class="token plain"> reply </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token number" style=color:#36acaa>1</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>service</span><span class="token plain"> </span><span class="token class-name">Greeter</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>rpc</span><span class="token plain"> </span><span class="token function" style=color:#d73a49>SayHello</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">HelloRequest</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>returns</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">HelloReply</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token punctuation" style=color:#393A34>}</span><br/></div></code></pre></div></div> |
| <p>Generate C# model and gRPC companion code with <code>--grpc</code>:</p> |
| <div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-bash codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">foryc service.fdl </span><span class="token parameter variable" style=color:#36acaa>--csharp_out</span><span class="token operator" style=color:#393A34>=</span><span class="token plain">./Generated </span><span class="token parameter variable" style=color:#36acaa>--grpc</span><br/></div></code></pre></div></div> |
| <p>For this schema, the C# generator emits:</p> |
| <table><thead><tr><th>File<th>Purpose<tbody><tr><td><code>Demo/Greeter/Service.cs</code><td>Fory model types and schema module<tr><td><code>Demo/Greeter/GreeterGrpc.cs</code><td>gRPC service base, client, and descriptors<tr><td><code>ServiceForyModule</code> in <code>Service.cs</code><td>Fory registration module for generated types<tr><td><code>Greeter.GreeterBase</code> in <code>GreeterGrpc.cs</code><td>Base class for server implementations<tr><td><code>Greeter.GreeterClient</code> in <code>GreeterGrpc.cs</code><td>Client stub for gRPC calls</table> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=implement-a-server>Implement a Server<a href=#implement-a-server class=hash-link aria-label="Direct link to Implement a Server" title="Direct link to Implement a Server" translate=no></a></h2> |
| <p>Extend the generated <code>Greeter.GreeterBase</code> class and map it through normal |
| ASP.NET Core gRPC hosting:</p> |
| <div class="language-csharp codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-csharp codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>System</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Threading</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Tasks</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>Demo</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Greeter</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>Grpc</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Core</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token class-name keyword" style=color:#00009f>var</span><span class="token plain"> builder </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> WebApplication</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>CreateBuilder</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">args</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">builder</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Services</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>AddGrpc</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token class-name keyword" style=color:#00009f>var</span><span class="token plain"> app </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> builder</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>Build</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">app</span><span class="token punctuation" style=color:#393A34>.</span><span class="token generic-method function" style=color:#d73a49>MapGrpcService</span><span class="token generic-method generic class-name punctuation" style=color:#393A34><</span><span class="token generic-method generic class-name">GreeterService</span><span class="token generic-method generic class-name punctuation" style=color:#393A34>></span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">app</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>Run</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>sealed</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>class</span><span class="token plain"> </span><span class="token class-name">GreeterService</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>:</span><span class="token plain"> </span><span class="token type-list class-name">Greeter</span><span class="token type-list class-name punctuation" style=color:#393A34>.</span><span class="token type-list class-name">GreeterBase</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>override</span><span class="token plain"> </span><span class="token return-type class-name">Task</span><span class="token return-type class-name punctuation" style=color:#393A34><</span><span class="token return-type class-name">HelloReply</span><span class="token return-type class-name punctuation" style=color:#393A34>></span><span class="token plain"> </span><span class="token function" style=color:#d73a49>SayHello</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">HelloRequest</span><span class="token plain"> request</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">ServerCallContext</span><span class="token plain"> context</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>return</span><span class="token plain"> Task</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>FromResult</span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>new</span><span class="token plain"> </span><span class="token constructor-invocation class-name">HelloReply</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> Reply </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"Hello, "</span><span class="token plain"> </span><span class="token operator" style=color:#393A34>+</span><span class="token plain"> request</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Name</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token punctuation" style=color:#393A34>}</span><br/></div></code></pre></div></div> |
| <p>Generated request and response types are registered by the generated schema |
| module used by the service companion, so service implementations do not perform |
| manual serializer registration.</p> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=create-a-client>Create a Client<a href=#create-a-client class=hash-link aria-label="Direct link to Create a Client" title="Direct link to Create a Client" translate=no></a></h2> |
| <p>Use the generated client with a <code>Grpc.Net.Client</code> call invoker:</p> |
| <div class="language-csharp codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-csharp codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>Demo</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Greeter</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>Grpc</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Net</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Client</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token class-name">GrpcChannel</span><span class="token plain"> channel </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> GrpcChannel</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>ForAddress</span><span class="token punctuation" style=color:#393A34>(</span><span class="token string" style=color:#e3116c>"https://localhost:5001"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token class-name keyword" style=color:#00009f>var</span><span class="token plain"> client </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>new</span><span class="token plain"> </span><span class="token constructor-invocation class-name">Greeter</span><span class="token constructor-invocation class-name punctuation" style=color:#393A34>.</span><span class="token constructor-invocation class-name">GreeterClient</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">channel</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>CreateCallInvoker</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token class-name">HelloReply</span><span class="token plain"> reply </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> client</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>SayHelloAsync</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>new</span><span class="token plain"> </span><span class="token constructor-invocation class-name">HelloRequest</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"> Name </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"Fory"</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">Console</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>WriteLine</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">reply</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Reply</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><br/></div></code></pre></div></div> |
| <p>The generated client also exposes synchronous unary methods and the normal |
| gRPC streaming call shapes.</p> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=streaming-rpcs>Streaming RPCs<a href=#streaming-rpcs class=hash-link aria-label="Direct link to Streaming RPCs" title="Direct link to Streaming RPCs" translate=no></a></h2> |
| <p>Fory service definitions can use the same gRPC streaming shapes:</p> |
| <div class="language-protobuf codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-protobuf codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>service</span><span class="token plain"> </span><span class="token class-name">Greeter</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>rpc</span><span class="token plain"> </span><span class="token function" style=color:#d73a49>SayHello</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">HelloRequest</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>returns</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">HelloReply</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>rpc</span><span class="token plain"> </span><span class="token function" style=color:#d73a49>LotsOfReplies</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">HelloRequest</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>returns</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>stream</span><span class="token plain"> </span><span class="token class-name">HelloReply</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>rpc</span><span class="token plain"> </span><span class="token function" style=color:#d73a49>LotsOfGreetings</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>stream</span><span class="token plain"> </span><span class="token class-name">HelloRequest</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>returns</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">HelloReply</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>rpc</span><span class="token plain"> </span><span class="token function" style=color:#d73a49>Chat</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>stream</span><span class="token plain"> </span><span class="token class-name">HelloRequest</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>returns</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>stream</span><span class="token plain"> </span><span class="token class-name">HelloReply</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token punctuation" style=color:#393A34>}</span><br/></div></code></pre></div></div> |
| <p>Generated C# service methods follow gRPC C# conventions:</p> |
| <table><thead><tr><th>IDL shape<th>Server method<th>Client method<tbody><tr><td><code>rpc A (Req) returns (Res)</code><td><code>Task<Res> A(Req request, ServerCallContext context)</code><td><code>Res A(...)</code> and <code>AsyncUnaryCall<Res> AAsync(...)</code><tr><td><code>rpc A (Req) returns (stream Res)</code><td><code>Task A(Req request, IServerStreamWriter<Res> responseStream, ...)</code><td><code>AsyncServerStreamingCall<Res> A(...)</code><tr><td><code>rpc A (stream Req) returns (Res)</code><td><code>Task<Res> A(IAsyncStreamReader<Req> requestStream, ...)</code><td><code>AsyncClientStreamingCall<Req, Res> A(...)</code><tr><td><code>rpc A (stream Req) returns (stream Res)</code><td><code>Task A(IAsyncStreamReader<Req> requestStream, IServerStreamWriter<Res> ...)</code><td><code>AsyncDuplexStreamingCall<Req, Res> A(...)</code></table> |
| <p>Server implementations can use the generated streaming method shapes directly:</p> |
| <div class="language-csharp codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-csharp codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>System</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Collections</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Generic</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>System</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Threading</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Tasks</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>Demo</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Greeter</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>Grpc</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Core</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>sealed</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>class</span><span class="token plain"> </span><span class="token class-name">GreeterService</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>:</span><span class="token plain"> </span><span class="token type-list class-name">Greeter</span><span class="token type-list class-name punctuation" style=color:#393A34>.</span><span class="token type-list class-name">GreeterBase</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>override</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>async</span><span class="token plain"> </span><span class="token return-type class-name">Task</span><span class="token plain"> </span><span class="token function" style=color:#d73a49>LotsOfReplies</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">HelloRequest</span><span class="token plain"> request</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">IServerStreamWriter</span><span class="token class-name punctuation" style=color:#393A34><</span><span class="token class-name">HelloReply</span><span class="token class-name punctuation" style=color:#393A34>></span><span class="token plain"> responseStream</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">ServerCallContext</span><span class="token plain"> context</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>foreach</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name keyword" style=color:#00009f>string</span><span class="token plain"> reply </span><span class="token keyword" style=color:#00009f>in</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>new</span><span class="token punctuation" style=color:#393A34>[</span><span class="token punctuation" style=color:#393A34>]</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token string" style=color:#e3116c>"Hello, "</span><span class="token plain"> </span><span class="token operator" style=color:#393A34>+</span><span class="token plain"> request</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Name</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token string" style=color:#e3116c>"Welcome, "</span><span class="token plain"> </span><span class="token operator" style=color:#393A34>+</span><span class="token plain"> request</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Name</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> responseStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>WriteAsync</span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>new</span><span class="token plain"> </span><span class="token constructor-invocation class-name">HelloReply</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"> Reply </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> reply </span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div 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/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>override</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>async</span><span class="token plain"> </span><span class="token return-type class-name">Task</span><span class="token return-type class-name punctuation" style=color:#393A34><</span><span class="token return-type class-name">HelloReply</span><span class="token return-type class-name punctuation" style=color:#393A34>></span><span class="token plain"> </span><span class="token function" style=color:#d73a49>LotsOfGreetings</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">IAsyncStreamReader</span><span class="token class-name punctuation" style=color:#393A34><</span><span class="token class-name">HelloRequest</span><span class="token class-name punctuation" style=color:#393A34>></span><span class="token plain"> requestStream</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">ServerCallContext</span><span class="token plain"> context</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">List</span><span class="token class-name punctuation" style=color:#393A34><</span><span class="token class-name keyword" style=color:#00009f>string</span><span class="token class-name punctuation" style=color:#393A34>></span><span class="token plain"> names </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>new</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>while</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> requestStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>MoveNext</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">context</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">CancellationToken</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> names</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>Add</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">requestStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Current</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Name</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>return</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>new</span><span class="token plain"> </span><span class="token constructor-invocation class-name">HelloReply</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"> Reply </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>string</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>Join</span><span class="token punctuation" style=color:#393A34>(</span><span class="token string" style=color:#e3116c>", "</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> names</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>override</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>async</span><span class="token plain"> </span><span class="token return-type class-name">Task</span><span class="token plain"> </span><span class="token function" style=color:#d73a49>Chat</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">IAsyncStreamReader</span><span class="token class-name punctuation" style=color:#393A34><</span><span class="token class-name">HelloRequest</span><span class="token class-name punctuation" style=color:#393A34>></span><span class="token plain"> requestStream</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">IServerStreamWriter</span><span class="token class-name punctuation" style=color:#393A34><</span><span class="token class-name">HelloReply</span><span class="token class-name punctuation" style=color:#393A34>></span><span class="token plain"> responseStream</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">ServerCallContext</span><span class="token plain"> context</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>while</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> requestStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>MoveNext</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">context</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">CancellationToken</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> responseStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>WriteAsync</span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>new</span><span class="token plain"> </span><span class="token constructor-invocation class-name">HelloReply</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> Reply </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"Hello, "</span><span class="token plain"> </span><span class="token operator" style=color:#393A34>+</span><span class="token plain"> requestStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Current</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Name</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div 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/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token punctuation" style=color:#393A34>}</span><br/></div></code></pre></div></div> |
| <p>Generated clients return the standard gRPC streaming call objects:</p> |
| <div class="language-csharp codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-csharp codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>System</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>System</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Threading</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>System</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Threading</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Tasks</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>Demo</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Greeter</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>Grpc</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token namespace" style=opacity:0.7>Core</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token class-name">AsyncServerStreamingCall</span><span class="token class-name punctuation" style=color:#393A34><</span><span class="token class-name">HelloReply</span><span class="token class-name punctuation" style=color:#393A34>></span><span class="token plain"> replies </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> client</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>LotsOfReplies</span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>new</span><span class="token plain"> </span><span class="token constructor-invocation class-name">HelloRequest</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"> Name </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"Fory"</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>while</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> replies</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">ResponseStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>MoveNext</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">CancellationToken</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">None</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> Console</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>WriteLine</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">replies</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">ResponseStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Current</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Reply</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token class-name">AsyncClientStreamingCall</span><span class="token class-name punctuation" style=color:#393A34><</span><span class="token class-name">HelloRequest</span><span class="token class-name punctuation" style=color:#393A34>,</span><span class="token class-name"> HelloReply</span><span class="token class-name punctuation" style=color:#393A34>></span><span class="token plain"> greetings </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> client</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>LotsOfGreetings</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> greetings</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">RequestStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>WriteAsync</span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>new</span><span class="token plain"> </span><span class="token constructor-invocation class-name">HelloRequest</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"> Name </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"Ada"</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> greetings</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">RequestStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>WriteAsync</span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>new</span><span class="token plain"> </span><span class="token constructor-invocation class-name">HelloRequest</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"> Name </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"Grace"</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> greetings</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">RequestStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>CompleteAsync</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token class-name">HelloReply</span><span class="token plain"> summary </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> greetings</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">ResponseAsync</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">Console</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>WriteLine</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">summary</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Reply</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token class-name">AsyncDuplexStreamingCall</span><span class="token class-name punctuation" style=color:#393A34><</span><span class="token class-name">HelloRequest</span><span class="token class-name punctuation" style=color:#393A34>,</span><span class="token class-name"> HelloReply</span><span class="token class-name punctuation" style=color:#393A34>></span><span class="token plain"> chat </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> client</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>Chat</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token class-name">Task</span><span class="token plain"> readTask </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> Task</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>Run</span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>async</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"> </span><span class="token operator" style=color:#393A34>=></span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>while</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> chat</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">ResponseStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>MoveNext</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">CancellationToken</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">None</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"> Console</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>WriteLine</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">chat</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">ResponseStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Current</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Reply</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div 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/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> chat</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">RequestStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>WriteAsync</span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>new</span><span class="token plain"> </span><span class="token constructor-invocation class-name">HelloRequest</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"> Name </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"Fory"</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> chat</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">RequestStream</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>CompleteAsync</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>await</span><span class="token plain"> readTask</span><span class="token punctuation" style=color:#393A34>;</span><br/></div></code></pre></div></div> |
| <p>The generated descriptors preserve the exact IDL service and method names for |
| the gRPC path.</p> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=generated-module-names>Generated Module Names<a href=#generated-module-names class=hash-link aria-label="Direct link to Generated Module Names" title="Direct link to Generated Module Names" translate=no></a></h2> |
| <p>C# schema module names come from the source file stem. They do not come from |
| <code>csharp_namespace</code> and they do not come from gRPC service names.</p> |
| <p>For example:</p> |
| <table><thead><tr><th>Schema input<th>Model file<th>Schema module<tbody><tr><td><code>service.fdl</code><td><code>Service.cs</code><td><code>ServiceForyModule</code><tr><td><code>order-events.fdl</code><td><code>OrderEvents.cs</code><td><code>OrderEventsForyModule</code><tr><td><code>greeter.fdl</code><td><code>Greeter.cs</code><td><code>GreeterForyModule</code><tr><td><code>Greeter.fdl</code><td><code>Greeter.cs</code><td><code>GreeterForyModule</code></table> |
| <p>A gRPC service named <code>Greeter</code> still generates the service companion |
| <code>GreeterGrpc.cs</code>; it does not change the schema module name. This lets several |
| schema files target the same C# namespace without colliding. No |
| namespace-derived or service-derived module alias is generated.</p> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=grpc-runtime-behavior>gRPC Runtime Behavior<a href=#grpc-runtime-behavior class=hash-link aria-label="Direct link to gRPC Runtime Behavior" title="Direct link to gRPC Runtime Behavior" translate=no></a></h2> |
| <p>The generated service code only replaces request and response serialization. |
| All normal gRPC operational features still belong to your gRPC stack:</p> |
| <ul> |
| <li class="">Deadlines and cancellations</li> |
| <li class="">TLS and authentication</li> |
| <li class="">Name resolution and load balancing</li> |
| <li class="">Client and server interceptors</li> |
| <li class="">Status codes and metadata</li> |
| <li class="">Channel pooling and lifecycle management</li> |
| </ul> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=troubleshooting>Troubleshooting<a href=#troubleshooting class=hash-link aria-label="Direct link to Troubleshooting" title="Direct link to Troubleshooting" translate=no></a></h2> |
| <h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=missing-grpccore-types>Missing <code>Grpc.Core</code> Types<a href=#missing-grpccore-types class=hash-link aria-label="Direct link to missing-grpccore-types" title="Direct link to missing-grpccore-types" translate=no></a></h3> |
| <p>Add <code>Grpc.Core.Api</code> or a server/client package that brings it transitively. |
| Generated Fory service files import gRPC APIs, but <code>Apache.Fory</code> intentionally |
| does not depend on gRPC.</p> |
| <h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=protobuf-clients-cannot-decode-the-service>Protobuf Clients Cannot Decode the Service<a href=#protobuf-clients-cannot-decode-the-service class=hash-link aria-label="Direct link to Protobuf Clients Cannot Decode the Service" title="Direct link to Protobuf Clients Cannot Decode the Service" translate=no></a></h3> |
| <p>Fory gRPC companions do not use protobuf wire encoding for messages. Use a |
| Fory-generated client for Fory-generated services, or expose a separate protobuf |
| service endpoint for generic protobuf clients.</div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="row margin-top--sm theme-doc-footer-edit-meta-row"><div class="col noPrint_WFHX"><a href=https://github.com/apache/fory-site/tree/main/docs/guide/csharp/grpc-support.md target=_blank rel="noopener noreferrer" class=theme-edit-this-page><svg fill=currentColor height=20 width=20 viewBox="0 0 40 40" class=iconEdit_Z9Sw 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"/></g></svg>Edit this page</a></div><div class="col lastUpdated_JAkA"></div></div></footer></article><nav class="docusaurus-mt-lg pagination-nav" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href=/docs/guide/csharp/custom_serializers><div class=pagination-nav__sublabel>Previous</div><div class=pagination-nav__label>Custom Serializers</div></a><a 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| <p> |
| Copyright © 2026 The Apache Software Foundation, Licensed under the Apache License, Version 2.0. <br/> |
| Apache Fory, Fory, Apache, the Apache Logo and the Apache Fory logo are either registered trademarks or trademarks of the Apache Software Foundation in the United States and/or other countries. |
| </p> |
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