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<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Apache Dubbo – Rust</title><link>https://dubbo.apache.org/en/docs3-v2/rust-sdk/</link><description>Recent content in Rust on Apache Dubbo</description><generator>Hugo -- gohugo.io</generator><language>en</language><atom:link href="https://dubbo.apache.org/en/docs3-v2/rust-sdk/index.xml" rel="self" type="application/rss+xml"/><item><title>Docs3-V2: Quick start</title><link>https://dubbo.apache.org/en/docs3-v2/rust-sdk/quick-start/</link><pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate><guid>https://dubbo.apache.org/en/docs3-v2/rust-sdk/quick-start/</guid><description>
&lt;p>See the full example &lt;a href="https://github.com/apache/dubbo-rust/tree/main/examples/greeter">here&lt;/a>.&lt;/p>
&lt;h2 id="1-prerequisite">1 Prerequisite&lt;/h2>
&lt;ul>
&lt;li>Install &lt;a href="https://rustup.rs/">Rust development environment&lt;/a>.&lt;/li>
&lt;li>Install &lt;a href="https://grpc.io/docs/protoc-installation/">protoc&lt;/a>.&lt;/li>
&lt;/ul>
&lt;h2 id="2-use-idl-to-define-dubbo-service">2 Use IDL to define Dubbo service&lt;/h2>
&lt;p>The Greeter service is defined as follows, contains a Unary, Client stream, Server stream, Bidirectional stream model Dubbo service:&lt;/p>
&lt;div class="highlight">&lt;pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;">&lt;code class="language-protobuf" data-lang="protobuf">&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">// ./proto/greeter.proto
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span>syntax &lt;span style="color:#719e07">=&lt;/span> &lt;span style="color:#2aa198">&amp;#34;proto3&amp;#34;&lt;/span>;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">option&lt;/span> java_multiple_files &lt;span style="color:#719e07">=&lt;/span> &lt;span style="color:#cb4b16">true&lt;/span>;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">package&lt;/span> org&lt;span style="color:#719e07">.&lt;/span>apache.dubbo.sample.tri;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">// The request message containing the user&amp;#39;s name.
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span>&lt;span style="color:#268bd2">message&lt;/span> &lt;span style="color:#268bd2">GreeterRequest&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#dc322f">string&lt;/span> name &lt;span style="color:#719e07">=&lt;/span> &lt;span style="color:#2aa198">1&lt;/span>;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>}
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">// The response message containing the greetings
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span>&lt;span style="color:#268bd2">message&lt;/span> &lt;span style="color:#268bd2">GreeterReply&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#dc322f">string&lt;/span> &lt;span style="color:#268bd2">message&lt;/span> &lt;span style="color:#719e07">=&lt;/span> &lt;span style="color:#2aa198">1&lt;/span>;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>}
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#268bd2">service&lt;/span> Greeter{
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#586e75">// unary
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> &lt;span style="color:#719e07">rpc&lt;/span> greet(GreeterRequest) &lt;span style="color:#719e07">returns&lt;/span> (GreeterReply);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#586e75">// clientStream
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> &lt;span style="color:#719e07">rpc&lt;/span> greetClientStream(stream GreeterRequest) &lt;span style="color:#719e07">returns&lt;/span> (GreeterReply);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#586e75">// serverStream
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> &lt;span style="color:#719e07">rpc&lt;/span> greetServerStream(GreeterRequest) &lt;span style="color:#719e07">returns&lt;/span> (stream GreeterReply);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#586e75">// bi streaming
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> &lt;span style="color:#719e07">rpc&lt;/span> greetStream(stream GreeterRequest) &lt;span style="color:#719e07">returns&lt;/span> (stream GreeterReply);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>}
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/div>&lt;h2 id="3-add-dubbo-rust-and-other-dependencies">3 Add Dubbo-rust and other dependencies&lt;/h2>
&lt;div class="highlight">&lt;pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;">&lt;code class="language-toml" data-lang="toml">&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75"># ./Cargo.toml&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>[package]
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>name = &lt;span style="color:#2aa198">&amp;#34;example-greeter&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>version = &lt;span style="color:#2aa198">&amp;#34;0.1.0&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>edition = &lt;span style="color:#2aa198">&amp;#34;2021&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>[[bin]]
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>name = &lt;span style="color:#2aa198">&amp;#34;greeter-server&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>path = &lt;span style="color:#2aa198">&amp;#34;src/greeter/server.rs&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>[[bin]]
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>name = &lt;span style="color:#2aa198">&amp;#34;greeter-client&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>path = &lt;span style="color:#2aa198">&amp;#34;src/greeter/client.rs&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>[dependencies]
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>http = &lt;span style="color:#2aa198">&amp;#34;0.2&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>http-body = &lt;span style="color:#2aa198">&amp;#34;0.4.4&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>futures-util = {version = &lt;span style="color:#2aa198">&amp;#34;0.3&amp;#34;&lt;/span>, default-features = &lt;span style="color:#cb4b16">false&lt;/span>}
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>tokio = { version = &lt;span style="color:#2aa198">&amp;#34;1.0&amp;#34;&lt;/span>, features = [ &lt;span style="color:#2aa198">&amp;#34;rt-multi-thread&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;time&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;fs&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;macros&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;net&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;signal&amp;#34;&lt;/span>] }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>prost-derive = {version = &lt;span style="color:#2aa198">&amp;#34;0.10&amp;#34;&lt;/span>, optional = &lt;span style="color:#cb4b16">true&lt;/span>}
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>prost = &lt;span style="color:#2aa198">&amp;#34;0.10.4&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>async-trait = &lt;span style="color:#2aa198">&amp;#34;0.1.56&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>tokio-stream = &lt;span style="color:#2aa198">&amp;#34;0.1&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>dubbo = &lt;span style="color:#2aa198">&amp;#34;0.1.0&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>dubbo-config = &lt;span style="color:#2aa198">&amp;#34;0.1.0&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>[build-dependencies]
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>dubbo-build = &lt;span style="color:#2aa198">&amp;#34;0.1.0&amp;#34;&lt;/span>
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/div>&lt;h2 id="4-configure-dubbo-build-to-compile-idl">4 Configure dubbo-build to compile IDL&lt;/h2>
&lt;p>Create &lt;code>build.rs&lt;/code> at project root directory:&lt;/p>
&lt;div class="highlight">&lt;pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;">&lt;code class="language-rust" data-lang="rust">&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">// ./build.rs
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span>&lt;span style="color:#719e07">fn&lt;/span> &lt;span style="color:#268bd2">main&lt;/span>() -&amp;gt; &lt;span style="color:#b58900">Result&lt;/span>&lt;span style="color:#719e07">&amp;lt;&lt;/span>(), &lt;span style="color:#b58900">Box&lt;/span>&lt;span style="color:#719e07">&amp;lt;&lt;/span>&lt;span style="color:#719e07">dyn&lt;/span> std::error::Error&lt;span style="color:#719e07">&amp;gt;&amp;gt;&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> tonic_build::compile_protos(&lt;span style="color:#2aa198">&amp;#34;proto/helloworld.proto&amp;#34;&lt;/span>)&lt;span style="color:#719e07">?&lt;/span>;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Ok&lt;/span>(())
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>}
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/div>&lt;p>After this configuration, the project compiling will generate Dubbo stub code, where the path is usually located &lt;code>./target/debug/build/example-greeter-&amp;lt;id&amp;gt;/out/org.apache.dubbo.sample.tri.rs&lt;/code>.&lt;/p>
&lt;h2 id="5-implement-server-and-client">5 Implement server and client&lt;/h2>
&lt;h3 id="51-write-dubbo-rust-server">5.1 Write Dubbo-rust Server&lt;/h3>
&lt;div class="highlight">&lt;pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;">&lt;code class="language-rust" data-lang="rust">&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">// ./src/greeter/server.rs
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span>&lt;span style="color:#719e07">pub&lt;/span> &lt;span style="color:#719e07">mod&lt;/span> protos {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> include!(concat!(env!(&lt;span style="color:#2aa198">&amp;#34;OUT_DIR&amp;#34;&lt;/span>), &lt;span style="color:#2aa198">&amp;#34;/org.apache.dubbo.sample.tri.rs&amp;#34;&lt;/span>));
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>}
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">use&lt;/span> futures_util::StreamExt;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">use&lt;/span> protos::{
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> greeter_server::{register_server, Greeter},
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> GreeterReply, GreeterRequest,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>};
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">use&lt;/span> std::{io::ErrorKind, pin::Pin};
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">use&lt;/span> async_trait::async_trait;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">use&lt;/span> futures_util::Stream;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">use&lt;/span> tokio::sync::mpsc;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">use&lt;/span> tokio_stream::wrappers::ReceiverStream;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">use&lt;/span> dubbo_config::RootConfig;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">use&lt;/span> dubbo::{codegen::&lt;span style="color:#719e07">*&lt;/span>, Dubbo};
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">type&lt;/span> &lt;span style="color:#268bd2">ResponseStream&lt;/span> &lt;span style="color:#719e07">=&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> Pin&lt;span style="color:#719e07">&amp;lt;&lt;/span>&lt;span style="color:#b58900">Box&lt;/span>&lt;span style="color:#719e07">&amp;lt;&lt;/span>&lt;span style="color:#719e07">dyn&lt;/span> Stream&lt;span style="color:#719e07">&amp;lt;&lt;/span>Item &lt;span style="color:#719e07">=&lt;/span> &lt;span style="color:#b58900">Result&lt;/span>&lt;span style="color:#719e07">&amp;lt;&lt;/span>GreeterReply, dubbo::status::Status&lt;span style="color:#719e07">&amp;gt;&amp;gt;&lt;/span> &lt;span style="color:#719e07">+&lt;/span> &lt;span style="color:#b58900">Send&lt;/span>&lt;span style="color:#719e07">&amp;gt;&amp;gt;&lt;/span>;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">#[tokio::main]&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">async&lt;/span> &lt;span style="color:#719e07">fn&lt;/span> &lt;span style="color:#268bd2">main&lt;/span>() {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> register_server(GreeterServerImpl {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> name: &lt;span style="color:#2aa198">&amp;#34;greeter&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> });
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#586e75">// Dubbo::new().start().await;
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> Dubbo::new()
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> .with_config({
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> r &lt;span style="color:#719e07">=&lt;/span> RootConfig::new();
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">match&lt;/span> r.load() {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Ok&lt;/span>(config) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> config,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Err&lt;/span>(_err) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> panic!(&lt;span style="color:#2aa198">&amp;#34;err: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, _err), &lt;span style="color:#586e75">// response was droped
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> })
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> .start()
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> .&lt;span style="color:#719e07">await&lt;/span>;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>}
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">#[allow(dead_code)]&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">#[derive(Default, Clone)]&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">struct&lt;/span> &lt;span style="color:#268bd2">GreeterServerImpl&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> name: &lt;span style="color:#b58900">String&lt;/span>,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>}
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">// #[async_trait]
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span>&lt;span style="color:#719e07">#[async_trait]&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">impl&lt;/span> Greeter &lt;span style="color:#719e07">for&lt;/span> GreeterServerImpl {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">async&lt;/span> &lt;span style="color:#719e07">fn&lt;/span> &lt;span style="color:#268bd2">greet&lt;/span>(
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">&amp;amp;&lt;/span>&lt;span style="color:#268bd2">self&lt;/span>,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> request: &lt;span style="color:#268bd2">Request&lt;/span>&lt;span style="color:#719e07">&amp;lt;&lt;/span>GreeterRequest&lt;span style="color:#719e07">&amp;gt;&lt;/span>,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> ) -&amp;gt; &lt;span style="color:#b58900">Result&lt;/span>&lt;span style="color:#719e07">&amp;lt;&lt;/span>Response&lt;span style="color:#719e07">&amp;lt;&lt;/span>GreeterReply&lt;span style="color:#719e07">&amp;gt;&lt;/span>, dubbo::status::Status&lt;span style="color:#719e07">&amp;gt;&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;GreeterServer::greet &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, request.metadata);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Ok&lt;/span>(Response::new(GreeterReply {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> message: &lt;span style="color:#2aa198">&amp;#34;hello, dubbo-rust&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }))
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">async&lt;/span> &lt;span style="color:#719e07">fn&lt;/span> &lt;span style="color:#268bd2">greet_client_stream&lt;/span>(
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">&amp;amp;&lt;/span>&lt;span style="color:#268bd2">self&lt;/span>,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> request: &lt;span style="color:#268bd2">Request&lt;/span>&lt;span style="color:#719e07">&amp;lt;&lt;/span>Decoding&lt;span style="color:#719e07">&amp;lt;&lt;/span>GreeterRequest&lt;span style="color:#719e07">&amp;gt;&amp;gt;&lt;/span>,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> ) -&amp;gt; &lt;span style="color:#b58900">Result&lt;/span>&lt;span style="color:#719e07">&amp;lt;&lt;/span>Response&lt;span style="color:#719e07">&amp;lt;&lt;/span>GreeterReply&lt;span style="color:#719e07">&amp;gt;&lt;/span>, dubbo::status::Status&lt;span style="color:#719e07">&amp;gt;&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> &lt;span style="color:#719e07">mut&lt;/span> s &lt;span style="color:#719e07">=&lt;/span> request.into_inner();
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">loop&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> result &lt;span style="color:#719e07">=&lt;/span> s.next().&lt;span style="color:#719e07">await&lt;/span>;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">match&lt;/span> result {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Some&lt;/span>(&lt;span style="color:#b58900">Ok&lt;/span>(val)) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> println!(&lt;span style="color:#2aa198">&amp;#34;result: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, val),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Some&lt;/span>(&lt;span style="color:#b58900">Err&lt;/span>(val)) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> println!(&lt;span style="color:#2aa198">&amp;#34;err: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, val),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">None&lt;/span> &lt;span style="color:#719e07">=&amp;gt;&lt;/span> &lt;span style="color:#719e07">break&lt;/span>,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Ok&lt;/span>(Response::new(GreeterReply {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> message: &lt;span style="color:#2aa198">&amp;#34;hello client streaming&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }))
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">type&lt;/span> &lt;span style="color:#268bd2">greetServerStreamStream&lt;/span> &lt;span style="color:#719e07">=&lt;/span> ResponseStream;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">async&lt;/span> &lt;span style="color:#719e07">fn&lt;/span> &lt;span style="color:#268bd2">greet_server_stream&lt;/span>(
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">&amp;amp;&lt;/span>&lt;span style="color:#268bd2">self&lt;/span>,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> request: &lt;span style="color:#268bd2">Request&lt;/span>&lt;span style="color:#719e07">&amp;lt;&lt;/span>GreeterRequest&lt;span style="color:#719e07">&amp;gt;&lt;/span>,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> ) -&amp;gt; &lt;span style="color:#b58900">Result&lt;/span>&lt;span style="color:#719e07">&amp;lt;&lt;/span>Response&lt;span style="color:#719e07">&amp;lt;&lt;/span>&lt;span style="color:#268bd2">Self&lt;/span>::greetServerStreamStream&lt;span style="color:#719e07">&amp;gt;&lt;/span>, dubbo::status::Status&lt;span style="color:#719e07">&amp;gt;&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;greet_server_stream: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, request.into_inner());
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> data &lt;span style="color:#719e07">=&lt;/span> vec![
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Result&lt;/span>::&lt;span style="color:#719e07">&amp;lt;&lt;/span>_, dubbo::status::Status&lt;span style="color:#719e07">&amp;gt;&lt;/span>::&lt;span style="color:#b58900">Ok&lt;/span>(GreeterReply {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> message: &lt;span style="color:#2aa198">&amp;#34;msg1 from server&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Result&lt;/span>::&lt;span style="color:#719e07">&amp;lt;&lt;/span>_, dubbo::status::Status&lt;span style="color:#719e07">&amp;gt;&lt;/span>::&lt;span style="color:#b58900">Ok&lt;/span>(GreeterReply {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> message: &lt;span style="color:#2aa198">&amp;#34;msg2 from server&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Result&lt;/span>::&lt;span style="color:#719e07">&amp;lt;&lt;/span>_, dubbo::status::Status&lt;span style="color:#719e07">&amp;gt;&lt;/span>::&lt;span style="color:#b58900">Ok&lt;/span>(GreeterReply {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> message: &lt;span style="color:#2aa198">&amp;#34;msg3 from server&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> ];
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> resp &lt;span style="color:#719e07">=&lt;/span> futures_util::stream::iter(data);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Ok&lt;/span>(Response::new(&lt;span style="color:#b58900">Box&lt;/span>::pin(resp)))
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">type&lt;/span> &lt;span style="color:#268bd2">greetStreamStream&lt;/span> &lt;span style="color:#719e07">=&lt;/span> ResponseStream;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">async&lt;/span> &lt;span style="color:#719e07">fn&lt;/span> &lt;span style="color:#268bd2">greet_stream&lt;/span>(
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">&amp;amp;&lt;/span>&lt;span style="color:#268bd2">self&lt;/span>,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> request: &lt;span style="color:#268bd2">Request&lt;/span>&lt;span style="color:#719e07">&amp;lt;&lt;/span>Decoding&lt;span style="color:#719e07">&amp;lt;&lt;/span>GreeterRequest&lt;span style="color:#719e07">&amp;gt;&amp;gt;&lt;/span>,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> ) -&amp;gt; &lt;span style="color:#b58900">Result&lt;/span>&lt;span style="color:#719e07">&amp;lt;&lt;/span>Response&lt;span style="color:#719e07">&amp;lt;&lt;/span>&lt;span style="color:#268bd2">Self&lt;/span>::greetStreamStream&lt;span style="color:#719e07">&amp;gt;&lt;/span>, dubbo::status::Status&lt;span style="color:#719e07">&amp;gt;&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#2aa198">&amp;#34;GreeterServer::greet_stream, grpc header: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> request.metadata
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> );
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> &lt;span style="color:#719e07">mut&lt;/span> in_stream &lt;span style="color:#719e07">=&lt;/span> request.into_inner();
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> (tx, rx) &lt;span style="color:#719e07">=&lt;/span> mpsc::channel(&lt;span style="color:#2aa198">128&lt;/span>);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#586e75">// this spawn here is required if you want to handle connection error.
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> &lt;span style="color:#586e75">// If we just map `in_stream` and write it back as `out_stream` the `out_stream`
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> &lt;span style="color:#586e75">// will be drooped when connection error occurs and error will never be propagated
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> &lt;span style="color:#586e75">// to mapped version of `in_stream`.
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> tokio::spawn(&lt;span style="color:#719e07">async&lt;/span> &lt;span style="color:#719e07">move&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">while&lt;/span> &lt;span style="color:#268bd2">let&lt;/span> &lt;span style="color:#b58900">Some&lt;/span>(result) &lt;span style="color:#719e07">=&lt;/span> in_stream.next().&lt;span style="color:#719e07">await&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">match&lt;/span> result {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Ok&lt;/span>(v) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#586e75">// if v.name.starts_with(&amp;#34;msg2&amp;#34;) {
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> &lt;span style="color:#586e75">// tx.send(Err(dubbo::status::Status::internal(format!(&amp;#34;err: args is invalid, {:?}&amp;#34;, v.name))
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> &lt;span style="color:#586e75">// )).await.expect(&amp;#34;working rx&amp;#34;);
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> &lt;span style="color:#586e75">// continue;
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> &lt;span style="color:#586e75">// }
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> tx.send(&lt;span style="color:#b58900">Ok&lt;/span>(GreeterReply {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> message: &lt;span style="color:#268bd2">format&lt;/span>&lt;span style="color:#719e07">!&lt;/span>(&lt;span style="color:#2aa198">&amp;#34;server reply: {:?}&amp;#34;&lt;/span>, v.name),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }))
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> .&lt;span style="color:#719e07">await&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> .expect(&lt;span style="color:#2aa198">&amp;#34;working rx&amp;#34;&lt;/span>)
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Err&lt;/span>(err) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">if&lt;/span> &lt;span style="color:#268bd2">let&lt;/span> &lt;span style="color:#b58900">Some&lt;/span>(io_err) &lt;span style="color:#719e07">=&lt;/span> match_for_io_error(&lt;span style="color:#719e07">&amp;amp;&lt;/span>err) {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">if&lt;/span> io_err.kind() &lt;span style="color:#719e07">==&lt;/span> ErrorKind::BrokenPipe {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#586e75">// here you can handle special case when client
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> &lt;span style="color:#586e75">// disconnected in unexpected way
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> eprintln!(&lt;span style="color:#2aa198">&amp;#34;&lt;/span>&lt;span style="color:#cb4b16">\t&lt;/span>&lt;span style="color:#2aa198">client disconnected: broken pipe&amp;#34;&lt;/span>);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">break&lt;/span>;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">match&lt;/span> tx.send(&lt;span style="color:#b58900">Err&lt;/span>(err)).&lt;span style="color:#719e07">await&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Ok&lt;/span>(_) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> (),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Err&lt;/span>(_err) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> &lt;span style="color:#719e07">break&lt;/span>, &lt;span style="color:#586e75">// response was droped
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;&lt;/span>&lt;span style="color:#cb4b16">\t&lt;/span>&lt;span style="color:#2aa198">stream ended&amp;#34;&lt;/span>);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> });
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#586e75">// echo just write the same data that was received
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span> &lt;span style="color:#268bd2">let&lt;/span> out_stream &lt;span style="color:#719e07">=&lt;/span> ReceiverStream::new(rx);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Ok&lt;/span>(Response::new(
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Box&lt;/span>::pin(out_stream) &lt;span style="color:#719e07">as&lt;/span> &lt;span style="color:#268bd2">Self&lt;/span>::greetStreamStream
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> ))
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>}
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">fn&lt;/span> &lt;span style="color:#268bd2">match_for_io_error&lt;/span>(err_status: &lt;span style="color:#719e07">&amp;amp;&lt;/span>&lt;span style="color:#268bd2">dubbo&lt;/span>::status::Status) -&amp;gt; &lt;span style="color:#b58900">Option&lt;/span>&lt;span style="color:#719e07">&amp;lt;&amp;amp;&lt;/span>std::io::Error&lt;span style="color:#719e07">&amp;gt;&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> &lt;span style="color:#719e07">mut&lt;/span> err: &lt;span style="color:#719e07">&amp;amp;&lt;/span>(&lt;span style="color:#719e07">dyn&lt;/span> std::error::Error &lt;span style="color:#719e07">+&lt;/span> &lt;span style="color:#b58900">&amp;#39;static&lt;/span>) &lt;span style="color:#719e07">=&lt;/span> err_status;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">loop&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">if&lt;/span> &lt;span style="color:#268bd2">let&lt;/span> &lt;span style="color:#b58900">Some&lt;/span>(io_err) &lt;span style="color:#719e07">=&lt;/span> err.downcast_ref::&lt;span style="color:#719e07">&amp;lt;&lt;/span>std::io::Error&lt;span style="color:#719e07">&amp;gt;&lt;/span>() {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">return&lt;/span> &lt;span style="color:#b58900">Some&lt;/span>(io_err);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> err &lt;span style="color:#719e07">=&lt;/span> &lt;span style="color:#719e07">match&lt;/span> err.source() {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Some&lt;/span>(err) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> err,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">None&lt;/span> &lt;span style="color:#719e07">=&amp;gt;&lt;/span> &lt;span style="color:#719e07">return&lt;/span> &lt;span style="color:#b58900">None&lt;/span>,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> };
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>}
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/div>&lt;h3 id="52-configure-dubboyaml">5.2 Configure dubbo.yaml&lt;/h3>
&lt;p>&lt;code>dubbo.yaml&lt;/code> indicates the configuration of the server, including the exposed service list, protocol configuration, listening configuration, and so on.&lt;/p>
&lt;div class="highlight">&lt;pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;">&lt;code class="language-yaml" data-lang="yaml">&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75"># ./dubbo.yaml&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#268bd2">name&lt;/span>: dubbo
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#268bd2">service&lt;/span>:
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">org.apache.dubbo.sample.tri.Greeter&lt;/span>:
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">version&lt;/span>: &lt;span style="color:#2aa198">1.0.0&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">group&lt;/span>: test
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">protocol&lt;/span>: triple
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">registry&lt;/span>: &lt;span style="color:#2aa198">&amp;#39;&amp;#39;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">serializer&lt;/span>: json
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">protocol_configs&lt;/span>:
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">triple&lt;/span>:
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">ip&lt;/span>: &lt;span style="color:#2aa198">0.0.0.0&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">port&lt;/span>: &lt;span style="color:#2aa198">&amp;#39;8888&amp;#39;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">name&lt;/span>: triple
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#268bd2">protocols&lt;/span>:
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">triple&lt;/span>:
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">ip&lt;/span>: &lt;span style="color:#2aa198">0.0.0.0&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">port&lt;/span>: &lt;span style="color:#2aa198">&amp;#39;8888&amp;#39;&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">name&lt;/span>: triple
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/div>&lt;h3 id="53-write-dubbo-rust-client">5.3 Write Dubbo-rust Client&lt;/h3>
&lt;div class="highlight">&lt;pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;">&lt;code class="language-rust" data-lang="rust">&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">// ./src/greeter/client.rs
&lt;/span>&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75">&lt;/span>&lt;span style="color:#719e07">pub&lt;/span> &lt;span style="color:#719e07">mod&lt;/span> protos {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> include!(concat!(env!(&lt;span style="color:#2aa198">&amp;#34;OUT_DIR&amp;#34;&lt;/span>), &lt;span style="color:#2aa198">&amp;#34;/org.apache.dubbo.sample.tri.rs&amp;#34;&lt;/span>));
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>}
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">use&lt;/span> dubbo::codegen::&lt;span style="color:#719e07">*&lt;/span>;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">use&lt;/span> futures_util::StreamExt;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">use&lt;/span> protos::{greeter_client::GreeterClient, GreeterRequest};
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">#[tokio::main]&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#719e07">async&lt;/span> &lt;span style="color:#719e07">fn&lt;/span> &lt;span style="color:#268bd2">main&lt;/span>() {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> &lt;span style="color:#719e07">mut&lt;/span> cli &lt;span style="color:#719e07">=&lt;/span> GreeterClient::new().with_uri(&lt;span style="color:#2aa198">&amp;#34;http://127.0.0.1:8888&amp;#34;&lt;/span>.to_string());
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;# unary call&amp;#34;&lt;/span>);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> resp &lt;span style="color:#719e07">=&lt;/span> cli
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> .greet(Request::new(GreeterRequest {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> name: &lt;span style="color:#2aa198">&amp;#34;message from client&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }))
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> .&lt;span style="color:#719e07">await&lt;/span>;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> resp &lt;span style="color:#719e07">=&lt;/span> &lt;span style="color:#719e07">match&lt;/span> resp {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Ok&lt;/span>(resp) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> resp,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Err&lt;/span>(err) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> &lt;span style="color:#719e07">return&lt;/span> println!(&lt;span style="color:#2aa198">&amp;#34;&lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, err),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> };
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> (_parts, body) &lt;span style="color:#719e07">=&lt;/span> resp.into_parts();
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;Response: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, body);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;# client stream&amp;#34;&lt;/span>);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> data &lt;span style="color:#719e07">=&lt;/span> vec![
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> GreeterRequest {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> name: &lt;span style="color:#2aa198">&amp;#34;msg1 from client streaming&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> },
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> GreeterRequest {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> name: &lt;span style="color:#2aa198">&amp;#34;msg2 from client streaming&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> },
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> GreeterRequest {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> name: &lt;span style="color:#2aa198">&amp;#34;msg3 from client streaming&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> },
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> ];
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> req &lt;span style="color:#719e07">=&lt;/span> futures_util::stream::iter(data);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> resp &lt;span style="color:#719e07">=&lt;/span> cli.greet_client_stream(req).&lt;span style="color:#719e07">await&lt;/span>;
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> client_streaming_resp &lt;span style="color:#719e07">=&lt;/span> &lt;span style="color:#719e07">match&lt;/span> resp {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Ok&lt;/span>(resp) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> resp,
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Err&lt;/span>(err) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> &lt;span style="color:#719e07">return&lt;/span> println!(&lt;span style="color:#2aa198">&amp;#34;&lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, err),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> };
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> (_parts, resp_body) &lt;span style="color:#719e07">=&lt;/span> client_streaming_resp.into_parts();
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;client streaming, Response: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, resp_body);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;# bi stream&amp;#34;&lt;/span>);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> data &lt;span style="color:#719e07">=&lt;/span> vec![
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> GreeterRequest {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> name: &lt;span style="color:#2aa198">&amp;#34;msg1 from client&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> },
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> GreeterRequest {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> name: &lt;span style="color:#2aa198">&amp;#34;msg2 from client&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> },
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> GreeterRequest {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> name: &lt;span style="color:#2aa198">&amp;#34;msg3 from client&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> },
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> ];
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> req &lt;span style="color:#719e07">=&lt;/span> futures_util::stream::iter(data);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> bidi_resp &lt;span style="color:#719e07">=&lt;/span> cli.greet_stream(req).&lt;span style="color:#719e07">await&lt;/span>.unwrap();
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> (parts, &lt;span style="color:#719e07">mut&lt;/span> body) &lt;span style="color:#719e07">=&lt;/span> bidi_resp.into_parts();
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;parts: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, parts);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">while&lt;/span> &lt;span style="color:#268bd2">let&lt;/span> &lt;span style="color:#b58900">Some&lt;/span>(item) &lt;span style="color:#719e07">=&lt;/span> body.next().&lt;span style="color:#719e07">await&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">match&lt;/span> item {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Ok&lt;/span>(v) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;reply: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, v);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Err&lt;/span>(err) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;err: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, err);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> trailer &lt;span style="color:#719e07">=&lt;/span> body.trailer().&lt;span style="color:#719e07">await&lt;/span>.unwrap();
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;trailer: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, trailer);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;# server stream&amp;#34;&lt;/span>);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> resp &lt;span style="color:#719e07">=&lt;/span> cli
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> .greet_server_stream(Request::new(GreeterRequest {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> name: &lt;span style="color:#2aa198">&amp;#34;server streaming req&amp;#34;&lt;/span>.to_string(),
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }))
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> .&lt;span style="color:#719e07">await&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> .unwrap();
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> (parts, &lt;span style="color:#719e07">mut&lt;/span> body) &lt;span style="color:#719e07">=&lt;/span> resp.into_parts();
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;parts: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, parts);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">while&lt;/span> &lt;span style="color:#268bd2">let&lt;/span> &lt;span style="color:#b58900">Some&lt;/span>(item) &lt;span style="color:#719e07">=&lt;/span> body.next().&lt;span style="color:#719e07">await&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#719e07">match&lt;/span> item {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Ok&lt;/span>(v) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;reply: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, v);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#b58900">Err&lt;/span>(err) &lt;span style="color:#719e07">=&amp;gt;&lt;/span> {
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;err: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, err);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> }
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> &lt;span style="color:#268bd2">let&lt;/span> trailer &lt;span style="color:#719e07">=&lt;/span> body.trailer().&lt;span style="color:#719e07">await&lt;/span>.unwrap();
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span> println!(&lt;span style="color:#2aa198">&amp;#34;trailer: &lt;/span>&lt;span style="color:#2aa198">{:?}&lt;/span>&lt;span style="color:#2aa198">&amp;#34;&lt;/span>, trailer);
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>}
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/div>&lt;h2 id="6-run">6 Run&lt;/h2>
&lt;ol>
&lt;li>Compile&lt;/li>
&lt;/ol>
&lt;p>Run &lt;code>cargo build&lt;/code> to compile server and client.&lt;/p>
&lt;ol start="2">
&lt;li>Run server&lt;/li>
&lt;/ol>
&lt;p>Run &lt;code>./target/debug/greeter-server&lt;/code> to start server. as configured above by dubbo.yaml, the server listens on port 8888 and provides RPC services over triple protocol:&lt;/p>
&lt;div class="highlight">&lt;pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;">&lt;code class="language-sh" data-lang="sh">&lt;span style="display:flex;">&lt;span>$ ./target/debug/greeter-server
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>2022-09-28T23:33:28.104577Z INFO dubbo::framework: url: Some&lt;span style="color:#719e07">(&lt;/span>Url &lt;span style="color:#719e07">{&lt;/span> uri: &lt;span style="color:#2aa198">&amp;#34;triple://0.0.0.0:8888/org.apache.dubbo.sample.tri.Greeter&amp;#34;&lt;/span>, protocol: &lt;span style="color:#2aa198">&amp;#34;triple&amp;#34;&lt;/span>, location: &lt;span style="color:#2aa198">&amp;#34;0.0.0.0:8888&amp;#34;&lt;/span>, ip: &lt;span style="color:#2aa198">&amp;#34;0.0.0.0&amp;#34;&lt;/span>, port: &lt;span style="color:#2aa198">&amp;#34;8888&amp;#34;&lt;/span>, service_key: &lt;span style="color:#719e07">[&lt;/span>&lt;span style="color:#2aa198">&amp;#34;org.apache.dubbo.sample.tri.Greeter&amp;#34;&lt;/span>&lt;span style="color:#719e07">]&lt;/span>, params: &lt;span style="color:#719e07">{}&lt;/span> &lt;span style="color:#719e07">})&lt;/span>
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/div>&lt;ol start="3">
&lt;li>Run client, verify that the call was successful&lt;/li>
&lt;/ol>
&lt;p>Run &lt;code>./target/debug/greeter-client&lt;/code> to start client, which will call methods under &lt;code>triple://127.0.0.1:8888/org.apache.dubbo.sample.tri.Greeter&lt;/code>:&lt;/p>
&lt;div class="highlight">&lt;pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;">&lt;code class="language-sh" data-lang="sh">&lt;span style="display:flex;">&lt;span>$ ./target/debug/greeter-client
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75"># unary call&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>Response: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;hello, dubbo-rust&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75"># client stream&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>client streaming, Response: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;hello client streaming&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75"># bi stream&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>parts: Metadata &lt;span style="color:#719e07">{&lt;/span> inner: &lt;span style="color:#719e07">{&lt;/span>&lt;span style="color:#2aa198">&amp;#34;content-type&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;application/grpc&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;date&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;Wed, 28 Sep 2022 23:34:20 GMT&amp;#34;&lt;/span>&lt;span style="color:#719e07">}&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>reply: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;server reply: \&amp;#34;msg1 from client\&amp;#34;&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>reply: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;server reply: \&amp;#34;msg2 from client\&amp;#34;&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>reply: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;server reply: \&amp;#34;msg3 from client\&amp;#34;&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>trailer: Some&lt;span style="color:#719e07">(&lt;/span>Metadata &lt;span style="color:#719e07">{&lt;/span> inner: &lt;span style="color:#719e07">{&lt;/span>&lt;span style="color:#2aa198">&amp;#34;content-type&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;application/grpc&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;grpc-status&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;0&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;grpc-message&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;poll trailer successfully.&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;grpc-accept-encoding&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;gzip,identity&amp;#34;&lt;/span>&lt;span style="color:#719e07">}&lt;/span> &lt;span style="color:#719e07">})&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75"># server stream&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>parts: Metadata &lt;span style="color:#719e07">{&lt;/span> inner: &lt;span style="color:#719e07">{&lt;/span>&lt;span style="color:#2aa198">&amp;#34;content-type&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;application/grpc&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;date&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;Wed, 28 Sep 2022 23:34:20 GMT&amp;#34;&lt;/span>&lt;span style="color:#719e07">}&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>reply: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;msg1 from server&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>reply: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;msg2 from server&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>reply: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;msg3 from server&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>trailer: Some&lt;span style="color:#719e07">(&lt;/span>Metadata &lt;span style="color:#719e07">{&lt;/span> inner: &lt;span style="color:#719e07">{&lt;/span>&lt;span style="color:#2aa198">&amp;#34;content-type&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;application/grpc&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;grpc-status&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;0&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;grpc-message&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;poll trailer successfully.&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;grpc-accept-encoding&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;gzip,identity&amp;#34;&lt;/span>&lt;span style="color:#719e07">}&lt;/span> &lt;span style="color:#719e07">})&lt;/span>
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/div></description></item><item><title>Docs3-V2: Rust and Java interoperability</title><link>https://dubbo.apache.org/en/docs3-v2/rust-sdk/java-interoperability/</link><pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate><guid>https://dubbo.apache.org/en/docs3-v2/rust-sdk/java-interoperability/</guid><description>
&lt;h2 id="1-prerequisite">1 Prerequisite&lt;/h2>
&lt;ul>
&lt;li>Install &lt;a href="https://rustup.rs/">Rust development environment&lt;/a>.&lt;/li>
&lt;li>Install &lt;a href="https://grpc.io/docs/protoc-installation/">protoc&lt;/a>.&lt;/li>
&lt;li>Install Java development environment.&lt;/li>
&lt;/ul>
&lt;h2 id="2-run-example-of-java-dubbo-provider">2 Run example of Java Dubbo provider&lt;/h2>
&lt;p>Java version of Dubbo provider example &lt;a href="https://github.com/apache/dubbo-samples/tree/master/3-extensions/protocol/dubbo-samples-triple">https://github.com/apache/dubbo-samples/tree/master/3-extensions/protocol/dubbo-samples-triple&lt;/a>.&lt;/p>
&lt;p>Clone the source code, compile, and run provider:&lt;/p>
&lt;div class="highlight">&lt;pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;">&lt;code class="language-sh" data-lang="sh">&lt;span style="display:flex;">&lt;span>$ &lt;span style="color:#586e75"># clone the source code&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>$ git clone https://github.com/apache/dubbo-samples.git
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>$ &lt;span style="color:#b58900">cd&lt;/span> dubbo-samples/dubbo-samples-triple/
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>$ &lt;span style="color:#586e75"># compile and build&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>$ mvn clean compile package -DskipTests
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>$ &lt;span style="color:#586e75"># run provider&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>$ java -Dprovider.port&lt;span style="color:#719e07">=&lt;/span>&lt;span style="color:#2aa198">8888&lt;/span> -jar ./target/dubbo-samples-triple-1.0-SNAPSHOT.jar
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75"># … some logs&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>Dubbo triple stub server started, &lt;span style="color:#268bd2">port&lt;/span>&lt;span style="color:#719e07">=&lt;/span>&lt;span style="color:#2aa198">8888&lt;/span>
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/div>&lt;p>&lt;a href="https://github.com/apache/dubbo-samples/blob/master/3-extensions/protocol/dubbo-samples-triple/src/main/proto/greeter.proto">The interface defination on Java side&lt;/a>&lt;/p>
&lt;h2 id="3-run-rust-version-of--dubbo-consumer">3 Run Rust version of Dubbo consumer&lt;/h2>
&lt;p>Rust version of Dubbo consumer &lt;a href="https://github.com/apache/dubbo-samples/tree/master/3-extensions/protocol/dubbo-samples-triple">https://github.com/apache/dubbo-samples/tree/master/3-extensions/protocol/dubbo-samples-triple&lt;/a>.&lt;/p>
&lt;p>Clone the source code, compile and run consumer:&lt;/p>
&lt;div class="highlight">&lt;pre tabindex="0" style="color:#93a1a1;background-color:#002b36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;">&lt;code class="language-sh" data-lang="sh">&lt;span style="display:flex;">&lt;span>$ &lt;span style="color:#586e75"># clone the source code&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>$ git clone https://github.com/apache/dubbo-rust.git
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>$ &lt;span style="color:#b58900">cd&lt;/span> dubbo-rust/examples/greeter/
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>$ &lt;span style="color:#586e75"># build&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>$ cargo build
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>$ &lt;span style="color:#586e75"># run consumer, call provider&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>$ ../../target/debug/greeter-client
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75"># unary call&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>Response: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;hello, dubbo-rust&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75"># client stream&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>client streaming, Response: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;hello client streaming&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75"># bi stream&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>parts: Metadata &lt;span style="color:#719e07">{&lt;/span> inner: &lt;span style="color:#719e07">{&lt;/span>&lt;span style="color:#2aa198">&amp;#34;content-type&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;application/grpc&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;date&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;Wed, 28 Sep 2022 23:54:56 GMT&amp;#34;&lt;/span>&lt;span style="color:#719e07">}&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>reply: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;server reply: \&amp;#34;msg1 from client\&amp;#34;&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>reply: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;server reply: \&amp;#34;msg2 from client\&amp;#34;&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>reply: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;server reply: \&amp;#34;msg3 from client\&amp;#34;&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>trailer: Some&lt;span style="color:#719e07">(&lt;/span>Metadata &lt;span style="color:#719e07">{&lt;/span> inner: &lt;span style="color:#719e07">{&lt;/span>&lt;span style="color:#2aa198">&amp;#34;grpc-message&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;poll trailer successfully.&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;grpc-accept-encoding&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;gzip,identity&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;content-type&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;application/grpc&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;grpc-status&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;0&amp;#34;&lt;/span>&lt;span style="color:#719e07">}&lt;/span> &lt;span style="color:#719e07">})&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>&lt;span style="color:#586e75"># server stream&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>parts: Metadata &lt;span style="color:#719e07">{&lt;/span> inner: &lt;span style="color:#719e07">{&lt;/span>&lt;span style="color:#2aa198">&amp;#34;content-type&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;application/grpc&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;date&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;Wed, 28 Sep 2022 23:54:56 GMT&amp;#34;&lt;/span>&lt;span style="color:#719e07">}&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>reply: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;msg1 from server&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>reply: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;msg2 from server&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>reply: GreeterReply &lt;span style="color:#719e07">{&lt;/span> message: &lt;span style="color:#2aa198">&amp;#34;msg3 from server&amp;#34;&lt;/span> &lt;span style="color:#719e07">}&lt;/span>
&lt;/span>&lt;/span>&lt;span style="display:flex;">&lt;span>trailer: Some&lt;span style="color:#719e07">(&lt;/span>Metadata &lt;span style="color:#719e07">{&lt;/span> inner: &lt;span style="color:#719e07">{&lt;/span>&lt;span style="color:#2aa198">&amp;#34;content-type&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;application/grpc&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;grpc-message&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;poll trailer successfully.&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;grpc-accept-encoding&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;gzip,identity&amp;#34;&lt;/span>, &lt;span style="color:#2aa198">&amp;#34;grpc-status&amp;#34;&lt;/span>: &lt;span style="color:#2aa198">&amp;#34;0&amp;#34;&lt;/span>&lt;span style="color:#719e07">}&lt;/span> &lt;span style="color:#719e07">})&lt;/span>
&lt;/span>&lt;/span>&lt;/code>&lt;/pre>&lt;/div>&lt;p>&lt;a href="https://github.com/apache/dubbo-rust/blob/main/examples/greeter/proto/greeter.proto">The interface defination on Rust side&lt;/a>&lt;/p></description></item><item><title>Docs3-V2: Network Protocol</title><link>https://dubbo.apache.org/en/docs3-v2/rust-sdk/protocol/</link><pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate><guid>https://dubbo.apache.org/en/docs3-v2/rust-sdk/protocol/</guid><description/></item></channel></rss>