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293 lines
26 KiB
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<!DOCTYPE html>
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<html lang="ja" data-base-path="/cpp-httplib">
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<meta charset="utf-8">
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<title>WebSocket - cpp-httplib</title>
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<a href="/cpp-httplib/ja/" class="header-title">cpp-httplib <span style="font-size:0.75em;font-weight:normal;margin-left:4px">v0.35.0</span></a>
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<a href="/cpp-httplib/ja/">Home</a>
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<a href="/cpp-httplib/ja/tour/">Tour</a>
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<a href="/cpp-httplib/ja/tour/" class="nav-section-title active">A Tour of cpp-httplib</a>
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<ul class="nav-list">
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<li><a href="/cpp-httplib/ja/tour/01-getting-started/" class="">Getting Started</a></li>
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<li><a href="/cpp-httplib/ja/tour/02-basic-client/" class="">Basic Client</a></li>
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<li><a href="/cpp-httplib/ja/tour/03-basic-server/" class="">Basic Server</a></li>
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<li><a href="/cpp-httplib/ja/tour/04-static-file-server/" class="">Static File Server</a></li>
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<li><a href="/cpp-httplib/ja/tour/05-tls-setup/" class="">TLS Setup</a></li>
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<li><a href="/cpp-httplib/ja/tour/06-https-client/" class="">HTTPS Client</a></li>
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<li><a href="/cpp-httplib/ja/tour/07-https-server/" class="">HTTPS Server</a></li>
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<li><a href="/cpp-httplib/ja/tour/08-websocket/" class="active">WebSocket</a></li>
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<li><a href="/cpp-httplib/ja/tour/09-whats-next/" class="">What's Next</a></li>
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</nav>
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</aside>
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<main class="content">
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<article>
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<h1>WebSocket</h1>
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<p>cpp-httplibはWebSocketにも対応しています。HTTPのリクエスト/レスポンスと違い、WebSocketはサーバーとクライアントが双方向にメッセージをやり取りできます。チャットやリアルタイム通知に便利です。</p>
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<p>さっそく、エコーサーバーとクライアントを作ってみましょう。</p>
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<h2>エコーサーバー</h2>
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<p>受け取ったメッセージをそのまま返すエコーサーバーです。</p>
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<div class="code-dark"><pre style="background-color:#2d2d2d;">
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<span style="color:#cc99cc;">#include </span><span style="color:#d3d0c8;">"</span><span style="color:#99cc99;">httplib.h</span><span style="color:#d3d0c8;">"
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</span><span style="color:#cc99cc;">#include </span><span style="color:#d3d0c8;"><</span><span style="color:#99cc99;">iostream</span><span style="color:#d3d0c8;">>
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</span><span style="color:#d3d0c8;">
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</span><span style="color:#cc99cc;">int </span><span style="color:#6699cc;">main</span><span style="color:#d3d0c8;">() {
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</span><span style="color:#d3d0c8;"> httplib::Server svr;
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</span><span style="color:#d3d0c8;">
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</span><span style="color:#d3d0c8;"> svr.</span><span style="color:#6699cc;">WebSocket</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/ws</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const</span><span style="color:#d3d0c8;"> httplib::Request &, httplib::ws::WebSocket &ws) {
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</span><span style="color:#d3d0c8;"> std::string msg;
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</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">while </span><span style="color:#d3d0c8;">(ws.</span><span style="color:#6699cc;">read</span><span style="color:#d3d0c8;">(msg)) {
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</span><span style="color:#d3d0c8;"> ws.</span><span style="color:#6699cc;">send</span><span style="color:#d3d0c8;">(msg); </span><span style="color:#747369;">// 受け取ったメッセージをそのまま返す
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</span><span style="color:#d3d0c8;"> }
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</span><span style="color:#d3d0c8;"> });
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</span><span style="color:#d3d0c8;">
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</span><span style="color:#d3d0c8;"> std::cout << "</span><span style="color:#99cc99;">Listening on port 8080...</span><span style="color:#d3d0c8;">" << std::endl;
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</span><span style="color:#d3d0c8;"> svr.</span><span style="color:#6699cc;">listen</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">0.0.0.0</span><span style="color:#d3d0c8;">", </span><span style="color:#f99157;">8080</span><span style="color:#d3d0c8;">);
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</span><span style="color:#d3d0c8;">}
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</span></pre>
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</div><div class="code-light"><pre style="background-color:#eff1f5;">
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<span style="color:#b48ead;">#include </span><span style="color:#4f5b66;">"</span><span style="color:#a3be8c;">httplib.h</span><span style="color:#4f5b66;">"
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</span><span style="color:#b48ead;">#include </span><span style="color:#4f5b66;"><</span><span style="color:#a3be8c;">iostream</span><span style="color:#4f5b66;">>
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</span><span style="color:#4f5b66;">
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</span><span style="color:#b48ead;">int </span><span style="color:#8fa1b3;">main</span><span style="color:#4f5b66;">() {
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</span><span style="color:#4f5b66;"> httplib::Server svr;
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</span><span style="color:#4f5b66;">
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</span><span style="color:#4f5b66;"> svr.</span><span style="color:#8fa1b3;">WebSocket</span><span style="color:#4f5b66;">("</span><span style="color:#a3be8c;">/ws</span><span style="color:#4f5b66;">", [](</span><span style="color:#b48ead;">const</span><span style="color:#4f5b66;"> httplib::Request &, httplib::ws::WebSocket &ws) {
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</span><span style="color:#4f5b66;"> std::string msg;
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</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">while </span><span style="color:#4f5b66;">(ws.</span><span style="color:#8fa1b3;">read</span><span style="color:#4f5b66;">(msg)) {
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</span><span style="color:#4f5b66;"> ws.</span><span style="color:#8fa1b3;">send</span><span style="color:#4f5b66;">(msg); </span><span style="color:#a7adba;">// 受け取ったメッセージをそのまま返す
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</span><span style="color:#4f5b66;"> }
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</span><span style="color:#4f5b66;"> });
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</span><span style="color:#4f5b66;">
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</span><span style="color:#4f5b66;"> std::cout << "</span><span style="color:#a3be8c;">Listening on port 8080...</span><span style="color:#4f5b66;">" << std::endl;
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</span><span style="color:#4f5b66;"> svr.</span><span style="color:#8fa1b3;">listen</span><span style="color:#4f5b66;">("</span><span style="color:#a3be8c;">0.0.0.0</span><span style="color:#4f5b66;">", </span><span style="color:#d08770;">8080</span><span style="color:#4f5b66;">);
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</span><span style="color:#4f5b66;">}
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</span></pre>
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</div>
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<p><code>svr.WebSocket()</code> でWebSocketハンドラーを登録します。3章の <code>svr.Get()</code> や <code>svr.Post()</code> と同じ感覚ですね。</p>
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<p>ハンドラーの中では、<code>ws.read(msg)</code> でメッセージを待ちます。接続が閉じられると <code>read()</code> が <code>false</code> を返すので、ループを抜けます。<code>ws.send(msg)</code> でメッセージを送り返します。</p>
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<h2>クライアントからの接続</h2>
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<p><code>httplib::ws::WebSocketClient</code> を使ってサーバーに接続してみましょう。</p>
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<div class="code-dark"><pre style="background-color:#2d2d2d;">
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<span style="color:#cc99cc;">#include </span><span style="color:#d3d0c8;">"</span><span style="color:#99cc99;">httplib.h</span><span style="color:#d3d0c8;">"
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</span><span style="color:#cc99cc;">#include </span><span style="color:#d3d0c8;"><</span><span style="color:#99cc99;">iostream</span><span style="color:#d3d0c8;">>
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</span><span style="color:#d3d0c8;">
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</span><span style="color:#cc99cc;">int </span><span style="color:#6699cc;">main</span><span style="color:#d3d0c8;">() {
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</span><span style="color:#d3d0c8;"> httplib::ws::WebSocketClient </span><span style="color:#6699cc;">client</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">ws://localhost:8080/ws</span><span style="color:#d3d0c8;">");
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</span><span style="color:#d3d0c8;">
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</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">if </span><span style="color:#d3d0c8;">(!client.</span><span style="color:#6699cc;">connect</span><span style="color:#d3d0c8;">()) {
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</span><span style="color:#d3d0c8;"> std::cout << "</span><span style="color:#99cc99;">Connection failed</span><span style="color:#d3d0c8;">" << std::endl;
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</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">return </span><span style="color:#f99157;">1</span><span style="color:#d3d0c8;">;
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</span><span style="color:#d3d0c8;"> }
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</span><span style="color:#d3d0c8;">
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</span><span style="color:#d3d0c8;"> </span><span style="color:#747369;">// メッセージを送信
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</span><span style="color:#d3d0c8;"> client.</span><span style="color:#6699cc;">send</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">Hello, WebSocket!</span><span style="color:#d3d0c8;">");
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</span><span style="color:#d3d0c8;">
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</span><span style="color:#d3d0c8;"> </span><span style="color:#747369;">// サーバーからの応答を受信
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</span><span style="color:#d3d0c8;"> std::string msg;
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</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">if </span><span style="color:#d3d0c8;">(client.</span><span style="color:#6699cc;">read</span><span style="color:#d3d0c8;">(msg)) {
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</span><span style="color:#d3d0c8;"> std::cout << msg << std::endl; </span><span style="color:#747369;">// Hello, WebSocket!
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</span><span style="color:#d3d0c8;"> }
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</span><span style="color:#d3d0c8;">
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</span><span style="color:#d3d0c8;"> client.</span><span style="color:#6699cc;">close</span><span style="color:#d3d0c8;">();
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</span><span style="color:#d3d0c8;">}
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</span></pre>
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</div><div class="code-light"><pre style="background-color:#eff1f5;">
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<span style="color:#b48ead;">#include </span><span style="color:#4f5b66;">"</span><span style="color:#a3be8c;">httplib.h</span><span style="color:#4f5b66;">"
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</span><span style="color:#b48ead;">#include </span><span style="color:#4f5b66;"><</span><span style="color:#a3be8c;">iostream</span><span style="color:#4f5b66;">>
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</span><span style="color:#4f5b66;">
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</span><span style="color:#b48ead;">int </span><span style="color:#8fa1b3;">main</span><span style="color:#4f5b66;">() {
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</span><span style="color:#4f5b66;"> httplib::ws::WebSocketClient </span><span style="color:#8fa1b3;">client</span><span style="color:#4f5b66;">("</span><span style="color:#a3be8c;">ws://localhost:8080/ws</span><span style="color:#4f5b66;">");
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</span><span style="color:#4f5b66;">
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</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">if </span><span style="color:#4f5b66;">(!client.</span><span style="color:#8fa1b3;">connect</span><span style="color:#4f5b66;">()) {
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</span><span style="color:#4f5b66;"> std::cout << "</span><span style="color:#a3be8c;">Connection failed</span><span style="color:#4f5b66;">" << std::endl;
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</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">return </span><span style="color:#d08770;">1</span><span style="color:#4f5b66;">;
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</span><span style="color:#4f5b66;"> }
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</span><span style="color:#4f5b66;">
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</span><span style="color:#4f5b66;"> </span><span style="color:#a7adba;">// メッセージを送信
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</span><span style="color:#4f5b66;"> client.</span><span style="color:#8fa1b3;">send</span><span style="color:#4f5b66;">("</span><span style="color:#a3be8c;">Hello, WebSocket!</span><span style="color:#4f5b66;">");
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</span><span style="color:#4f5b66;">
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</span><span style="color:#4f5b66;"> </span><span style="color:#a7adba;">// サーバーからの応答を受信
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</span><span style="color:#4f5b66;"> std::string msg;
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</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">if </span><span style="color:#4f5b66;">(client.</span><span style="color:#8fa1b3;">read</span><span style="color:#4f5b66;">(msg)) {
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</span><span style="color:#4f5b66;"> std::cout << msg << std::endl; </span><span style="color:#a7adba;">// Hello, WebSocket!
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</span><span style="color:#4f5b66;"> }
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</span><span style="color:#4f5b66;">
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</span><span style="color:#4f5b66;"> client.</span><span style="color:#8fa1b3;">close</span><span style="color:#4f5b66;">();
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</span><span style="color:#4f5b66;">}
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</span></pre>
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</div>
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<p>コンストラクタには <code>ws://host:port/path</code> 形式のURLを渡します。<code>connect()</code> で接続を開始し、<code>send()</code> と <code>read()</code> でメッセージをやり取りします。</p>
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<h2>テキストとバイナリ</h2>
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<p>WebSocketにはテキストとバイナリの2種類のメッセージがあります。<code>read()</code> の戻り値で区別できます。</p>
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<div class="code-dark"><pre style="background-color:#2d2d2d;">
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<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">WebSocket</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/ws</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const</span><span style="color:#d3d0c8;"> httplib::Request &, httplib::ws::WebSocket &ws) {
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</span><span style="color:#d3d0c8;"> std::string msg;
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</span><span style="color:#d3d0c8;"> httplib::ws::ReadResult ret;
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</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">while </span><span style="color:#d3d0c8;">((ret = ws.</span><span style="color:#6699cc;">read</span><span style="color:#d3d0c8;">(msg))) {
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</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">if </span><span style="color:#d3d0c8;">(ret == httplib::ws::Binary) {
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</span><span style="color:#d3d0c8;"> ws.</span><span style="color:#6699cc;">send</span><span style="color:#d3d0c8;">(msg.</span><span style="color:#6699cc;">data</span><span style="color:#d3d0c8;">(), msg.</span><span style="color:#6699cc;">size</span><span style="color:#d3d0c8;">()); </span><span style="color:#747369;">// バイナリとして送信
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</span><span style="color:#d3d0c8;"> } </span><span style="color:#cc99cc;">else </span><span style="color:#d3d0c8;">{
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</span><span style="color:#d3d0c8;"> ws.</span><span style="color:#6699cc;">send</span><span style="color:#d3d0c8;">(msg); </span><span style="color:#747369;">// テキストとして送信
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</span><span style="color:#d3d0c8;"> }
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</span><span style="color:#d3d0c8;"> }
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</span><span style="color:#d3d0c8;">});
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</span></pre>
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</div><div class="code-light"><pre style="background-color:#eff1f5;">
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<span style="color:#4f5b66;">svr.</span><span style="color:#8fa1b3;">WebSocket</span><span style="color:#4f5b66;">("</span><span style="color:#a3be8c;">/ws</span><span style="color:#4f5b66;">", [](</span><span style="color:#b48ead;">const</span><span style="color:#4f5b66;"> httplib::Request &, httplib::ws::WebSocket &ws) {
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</span><span style="color:#4f5b66;"> std::string msg;
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</span><span style="color:#4f5b66;"> httplib::ws::ReadResult ret;
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</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">while </span><span style="color:#4f5b66;">((ret = ws.</span><span style="color:#8fa1b3;">read</span><span style="color:#4f5b66;">(msg))) {
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</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">if </span><span style="color:#4f5b66;">(ret == httplib::ws::Binary) {
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</span><span style="color:#4f5b66;"> ws.</span><span style="color:#8fa1b3;">send</span><span style="color:#4f5b66;">(msg.</span><span style="color:#8fa1b3;">data</span><span style="color:#4f5b66;">(), msg.</span><span style="color:#8fa1b3;">size</span><span style="color:#4f5b66;">()); </span><span style="color:#a7adba;">// バイナリとして送信
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</span><span style="color:#4f5b66;"> } </span><span style="color:#b48ead;">else </span><span style="color:#4f5b66;">{
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</span><span style="color:#4f5b66;"> ws.</span><span style="color:#8fa1b3;">send</span><span style="color:#4f5b66;">(msg); </span><span style="color:#a7adba;">// テキストとして送信
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</span><span style="color:#4f5b66;"> }
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</span><span style="color:#4f5b66;"> }
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</span><span style="color:#4f5b66;">});
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</span></pre>
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</div>
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<ul>
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<li><code>ws.send(const std::string &)</code> — テキストメッセージとして送信</li>
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<li><code>ws.send(const char *, size_t)</code> — バイナリメッセージとして送信</li>
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</ul>
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<p>クライアント側も同じAPIです。</p>
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<h2>リクエスト情報へのアクセス</h2>
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<p>ハンドラーの第1引数 <code>req</code> から、ハンドシェイク時のHTTPリクエスト情報を読み取れます。認証トークンの確認などに便利です。</p>
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<div class="code-dark"><pre style="background-color:#2d2d2d;">
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<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">WebSocket</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/ws</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const</span><span style="color:#d3d0c8;"> httplib::Request &req, httplib::ws::WebSocket &ws) {
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</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> token = req.</span><span style="color:#6699cc;">get_header_value</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">Authorization</span><span style="color:#d3d0c8;">");
|
||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">if </span><span style="color:#d3d0c8;">(token.</span><span style="color:#6699cc;">empty</span><span style="color:#d3d0c8;">()) {
|
||
</span><span style="color:#d3d0c8;"> ws.</span><span style="color:#6699cc;">close</span><span style="color:#d3d0c8;">(httplib::ws::CloseStatus::PolicyViolation, "</span><span style="color:#99cc99;">unauthorized</span><span style="color:#d3d0c8;">");
|
||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">return</span><span style="color:#d3d0c8;">;
|
||
</span><span style="color:#d3d0c8;"> }
|
||
</span><span style="color:#d3d0c8;">
|
||
</span><span style="color:#d3d0c8;"> std::string msg;
|
||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">while </span><span style="color:#d3d0c8;">(ws.</span><span style="color:#6699cc;">read</span><span style="color:#d3d0c8;">(msg)) {
|
||
</span><span style="color:#d3d0c8;"> ws.</span><span style="color:#6699cc;">send</span><span style="color:#d3d0c8;">(msg);
|
||
</span><span style="color:#d3d0c8;"> }
|
||
</span><span style="color:#d3d0c8;">});
|
||
</span></pre>
|
||
</div><div class="code-light"><pre style="background-color:#eff1f5;">
|
||
<span style="color:#4f5b66;">svr.</span><span style="color:#8fa1b3;">WebSocket</span><span style="color:#4f5b66;">("</span><span style="color:#a3be8c;">/ws</span><span style="color:#4f5b66;">", [](</span><span style="color:#b48ead;">const</span><span style="color:#4f5b66;"> httplib::Request &req, httplib::ws::WebSocket &ws) {
|
||
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">auto</span><span style="color:#4f5b66;"> token = req.</span><span style="color:#8fa1b3;">get_header_value</span><span style="color:#4f5b66;">("</span><span style="color:#a3be8c;">Authorization</span><span style="color:#4f5b66;">");
|
||
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">if </span><span style="color:#4f5b66;">(token.</span><span style="color:#8fa1b3;">empty</span><span style="color:#4f5b66;">()) {
|
||
</span><span style="color:#4f5b66;"> ws.</span><span style="color:#8fa1b3;">close</span><span style="color:#4f5b66;">(httplib::ws::CloseStatus::PolicyViolation, "</span><span style="color:#a3be8c;">unauthorized</span><span style="color:#4f5b66;">");
|
||
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">return</span><span style="color:#4f5b66;">;
|
||
</span><span style="color:#4f5b66;"> }
|
||
</span><span style="color:#4f5b66;">
|
||
</span><span style="color:#4f5b66;"> std::string msg;
|
||
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">while </span><span style="color:#4f5b66;">(ws.</span><span style="color:#8fa1b3;">read</span><span style="color:#4f5b66;">(msg)) {
|
||
</span><span style="color:#4f5b66;"> ws.</span><span style="color:#8fa1b3;">send</span><span style="color:#4f5b66;">(msg);
|
||
</span><span style="color:#4f5b66;"> }
|
||
</span><span style="color:#4f5b66;">});
|
||
</span></pre>
|
||
</div>
|
||
<h2>WSSで使う</h2>
|
||
<p>HTTPS上のWebSocket（WSS）にも対応しています。サーバー側は <code>httplib::SSLServer</code> にWebSocketハンドラーを登録するだけです。</p>
|
||
<div class="code-dark"><pre style="background-color:#2d2d2d;">
|
||
<span style="color:#d3d0c8;">httplib::SSLServer </span><span style="color:#6699cc;">svr</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">cert.pem</span><span style="color:#d3d0c8;">", "</span><span style="color:#99cc99;">key.pem</span><span style="color:#d3d0c8;">");
|
||
</span><span style="color:#d3d0c8;">
|
||
</span><span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">WebSocket</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/ws</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const</span><span style="color:#d3d0c8;"> httplib::Request &, httplib::ws::WebSocket &ws) {
|
||
</span><span style="color:#d3d0c8;"> std::string msg;
|
||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">while </span><span style="color:#d3d0c8;">(ws.</span><span style="color:#6699cc;">read</span><span style="color:#d3d0c8;">(msg)) {
|
||
</span><span style="color:#d3d0c8;"> ws.</span><span style="color:#6699cc;">send</span><span style="color:#d3d0c8;">(msg);
|
||
</span><span style="color:#d3d0c8;"> }
|
||
</span><span style="color:#d3d0c8;">});
|
||
</span><span style="color:#d3d0c8;">
|
||
</span><span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">listen</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">0.0.0.0</span><span style="color:#d3d0c8;">", </span><span style="color:#f99157;">8443</span><span style="color:#d3d0c8;">);
|
||
</span></pre>
|
||
</div><div class="code-light"><pre style="background-color:#eff1f5;">
|
||
<span style="color:#4f5b66;">httplib::SSLServer </span><span style="color:#8fa1b3;">svr</span><span style="color:#4f5b66;">("</span><span style="color:#a3be8c;">cert.pem</span><span style="color:#4f5b66;">", "</span><span style="color:#a3be8c;">key.pem</span><span style="color:#4f5b66;">");
|
||
</span><span style="color:#4f5b66;">
|
||
</span><span style="color:#4f5b66;">svr.</span><span style="color:#8fa1b3;">WebSocket</span><span style="color:#4f5b66;">("</span><span style="color:#a3be8c;">/ws</span><span style="color:#4f5b66;">", [](</span><span style="color:#b48ead;">const</span><span style="color:#4f5b66;"> httplib::Request &, httplib::ws::WebSocket &ws) {
|
||
</span><span style="color:#4f5b66;"> std::string msg;
|
||
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">while </span><span style="color:#4f5b66;">(ws.</span><span style="color:#8fa1b3;">read</span><span style="color:#4f5b66;">(msg)) {
|
||
</span><span style="color:#4f5b66;"> ws.</span><span style="color:#8fa1b3;">send</span><span style="color:#4f5b66;">(msg);
|
||
</span><span style="color:#4f5b66;"> }
|
||
</span><span style="color:#4f5b66;">});
|
||
</span><span style="color:#4f5b66;">
|
||
</span><span style="color:#4f5b66;">svr.</span><span style="color:#8fa1b3;">listen</span><span style="color:#4f5b66;">("</span><span style="color:#a3be8c;">0.0.0.0</span><span style="color:#4f5b66;">", </span><span style="color:#d08770;">8443</span><span style="color:#4f5b66;">);
|
||
</span></pre>
|
||
</div>
|
||
<p>クライアント側は <code>wss://</code> スキームを使います。</p>
|
||
<div class="code-dark"><pre style="background-color:#2d2d2d;">
|
||
<span style="color:#d3d0c8;">httplib::ws::WebSocketClient </span><span style="color:#6699cc;">client</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">wss://localhost:8443/ws</span><span style="color:#d3d0c8;">");
|
||
</span></pre>
|
||
</div><div class="code-light"><pre style="background-color:#eff1f5;">
|
||
<span style="color:#4f5b66;">httplib::ws::WebSocketClient </span><span style="color:#8fa1b3;">client</span><span style="color:#4f5b66;">("</span><span style="color:#a3be8c;">wss://localhost:8443/ws</span><span style="color:#4f5b66;">");
|
||
</span></pre>
|
||
</div>
|
||
<h2>次のステップ</h2>
|
||
<p>WebSocketの基本がわかりましたね。ここまでで Tourは終わりです。</p>
|
||
<p>次のページでは、Tourで取り上げなかった機能をまとめて紹介します。</p>
|
||
<p><strong>次:</strong> <a href="../09-whats-next">What's Next</a></p>
|
||
|
||
</article>
|
||
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|
||
|
||
</div>
|
||
|
||
<footer class="footer">
|
||
© 2026 yhirose. All rights reserved.
|
||
</footer>
|
||
|
||
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|
||
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|
||
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