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Remove docs-gen
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yhirose
@@ -17,16 +17,16 @@
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<body>
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<header class="header">
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<div class="header-inner">
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<a href="/cpp-httplib/en/" class="header-title">cpp-httplib <span style="font-size:0.75em;font-weight:normal;margin-left:4px">v0.36.0</span></a>
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<a href="/cpp-httplib/en/" class="header-title">cpp-httplib <span style="font-size:0.75em;font-weight:normal;margin-left:4px">v0.36.0</span></a>
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<div class="header-spacer"></div>
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<nav class="header-nav">
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<a href="/cpp-httplib/en/">
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<a href="/cpp-httplib/en/">
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<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
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Home
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</a>
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<a href="/cpp-httplib/en/tour/">
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<a href="/cpp-httplib/en/tour/">
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<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><polygon points="16.24 7.76 14.12 14.12 7.76 16.24 9.88 9.88 16.24 7.76"/></svg>
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Tour
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</a>
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@@ -45,6 +45,7 @@
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<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="11" cy="11" r="8"/><line x1="21" y1="21" x2="16.65" y2="16.65"/></svg>
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</button>
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<button class="theme-toggle" aria-label="Toggle theme"></button>
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<div class="lang-selector">
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<button class="lang-btn" aria-label="Language">
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<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
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@@ -58,6 +59,7 @@
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</ul>
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</div>
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</div>
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<button class="sidebar-toggle" aria-label="Menu">☰</button>
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</div>
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@@ -105,8 +107,8 @@
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<p>In the previous chapter, you sent requests from a client to a test server. Now let's walk through how that server actually works.</p>
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<h2>Starting the Server</h2>
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<p>Once you've registered your routes, call <code>svr.listen()</code> to start the server.</p>
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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
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<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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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
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<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">listen</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">0.0.0.0</span><span style="color:#c0c5ce;">", </span><span style="color:#d08770;">8080</span><span style="color:#c0c5ce;">);
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</span></pre>
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</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
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<span style="color:#323232;">svr.listen(</span><span style="color:#183691;">"0.0.0.0"</span><span style="color:#323232;">, </span><span style="color:#0086b3;">8080</span><span style="color:#323232;">);
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@@ -116,12 +118,12 @@
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<p><code>listen()</code> is a blocking call. It won't return until the server stops. The server keeps running until you press <code>Ctrl+C</code> in your terminal or call <code>svr.stop()</code> from another thread.</p>
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<h2>Routing</h2>
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<p>Routing is the heart of any server. It's how you tell cpp-httplib: when a request comes in for this URL with this HTTP method, run this code.</p>
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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
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<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;">Get</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/hi</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const</span><span style="color:#d3d0c8;"> httplib::Request &req, httplib::Response &res) {
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</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">Hello!</span><span style="color:#d3d0c8;">", "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
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</span><span style="color:#d3d0c8;">});
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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
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<span style="color:#c0c5ce;">httplib::Server svr;
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</span><span style="color:#c0c5ce;">
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</span><span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/hi</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const</span><span style="color:#c0c5ce;"> httplib::Request &req, httplib::Response &res) {
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</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">Hello!</span><span style="color:#c0c5ce;">", "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
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</span><span style="color:#c0c5ce;">});
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</span></pre>
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</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
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<span style="color:#323232;">httplib::Server svr;
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@@ -133,11 +135,11 @@
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</div></div>
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<p><code>svr.Get()</code> registers a handler for GET requests. The first argument is the path, the second is the handler function. When a GET request arrives at <code>/hi</code>, your lambda runs.</p>
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<p>There's a method for each HTTP verb.</p>
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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
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<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/path</span><span style="color:#d3d0c8;">", handler); </span><span style="color:#747369;">// GET
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</span><span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Post</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/path</span><span style="color:#d3d0c8;">", handler); </span><span style="color:#747369;">// POST
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</span><span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Put</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/path</span><span style="color:#d3d0c8;">", handler); </span><span style="color:#747369;">// PUT
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</span><span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Delete</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/path</span><span style="color:#d3d0c8;">", handler); </span><span style="color:#747369;">// DELETE
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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
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<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/path</span><span style="color:#c0c5ce;">", handler); </span><span style="color:#65737e;">// GET
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</span><span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Post</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/path</span><span style="color:#c0c5ce;">", handler); </span><span style="color:#65737e;">// POST
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</span><span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Put</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/path</span><span style="color:#c0c5ce;">", handler); </span><span style="color:#65737e;">// PUT
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</span><span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Delete</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/path</span><span style="color:#c0c5ce;">", handler); </span><span style="color:#65737e;">// DELETE
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</span></pre>
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</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
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<span style="color:#323232;">svr.Get(</span><span style="color:#183691;">"/path"</span><span style="color:#323232;">, handler); </span><span style="font-style:italic;color:#969896;">// GET
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@@ -147,10 +149,10 @@
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</span></pre>
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</div></div>
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<p>The handler signature is <code>(const httplib::Request &req, httplib::Response &res)</code>. You can use <code>auto</code> to keep it short.</p>
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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
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<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/hi</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
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</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">Hello!</span><span style="color:#d3d0c8;">", "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
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</span><span style="color:#d3d0c8;">});
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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
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<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/hi</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
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</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">Hello!</span><span style="color:#c0c5ce;">", "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
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</span><span style="color:#c0c5ce;">});
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</span></pre>
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</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
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<span style="color:#323232;">svr.Get(</span><span style="color:#183691;">"/hi"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
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@@ -163,11 +165,11 @@
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<p>The first parameter <code>req</code> gives you everything the client sent.</p>
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<h3>Body</h3>
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<p><code>req.body</code> holds the request body as a <code>std::string</code>.</p>
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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
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<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Post</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/post</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
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</span><span style="color:#d3d0c8;"> </span><span style="color:#747369;">// Echo the body back to the client
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</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">(req.</span><span style="color:#f2777a;">body</span><span style="color:#d3d0c8;">, "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
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</span><span style="color:#d3d0c8;">});
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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
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<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Post</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/post</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
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</span><span style="color:#c0c5ce;"> </span><span style="color:#65737e;">// Echo the body back to the client
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</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">(req.</span><span style="color:#bf616a;">body</span><span style="color:#c0c5ce;">, "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
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</span><span style="color:#c0c5ce;">});
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</span></pre>
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</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
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<span style="color:#323232;">svr.Post(</span><span style="color:#183691;">"/post"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
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@@ -178,11 +180,11 @@
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</div></div>
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<h3>Headers</h3>
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<p>Use <code>req.get_header_value()</code> to read a request header.</p>
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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
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<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/check</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
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</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> auth = 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;">");
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</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">Auth: </span><span style="color:#d3d0c8;">" + auth, "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
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</span><span style="color:#d3d0c8;">});
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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
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<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/check</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
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</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">auto</span><span style="color:#c0c5ce;"> auth = req.</span><span style="color:#8fa1b3;">get_header_value</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">Authorization</span><span style="color:#c0c5ce;">");
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</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">Auth: </span><span style="color:#c0c5ce;">" + auth, "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
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</span><span style="color:#c0c5ce;">});
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</span></pre>
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</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
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<span style="color:#323232;">svr.Get(</span><span style="color:#183691;">"/check"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
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@@ -193,11 +195,11 @@
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</div></div>
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<h3>Query Parameters and Form Data</h3>
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<p><code>req.get_param_value()</code> retrieves a parameter by name. It works for both GET query parameters and POST form data.</p>
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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
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<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/search</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
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</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> q = req.</span><span style="color:#6699cc;">get_param_value</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">q</span><span style="color:#d3d0c8;">");
|
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</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">Query: </span><span style="color:#d3d0c8;">" + q, "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
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</span><span style="color:#d3d0c8;">});
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<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
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<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/search</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
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</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">auto</span><span style="color:#c0c5ce;"> q = req.</span><span style="color:#8fa1b3;">get_param_value</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">q</span><span style="color:#c0c5ce;">");
|
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</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">Query: </span><span style="color:#c0c5ce;">" + q, "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
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</span><span style="color:#c0c5ce;">});
|
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</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Get(</span><span style="color:#183691;">"/search"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
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@@ -208,14 +210,14 @@
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</div></div>
|
||||
<p>A request to <code>/search?q=cpp-httplib</code> gives you <code>"cpp-httplib"</code> for <code>q</code>.</p>
|
||||
<p>To loop over all parameters, use <code>req.params</code>.</p>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Post</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/submit</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> std::string result;
|
||||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">for </span><span style="color:#d3d0c8;">(</span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&[key, val] : req.</span><span style="color:#f2777a;">params</span><span style="color:#d3d0c8;">) {
|
||||
</span><span style="color:#d3d0c8;"> result += key + "</span><span style="color:#99cc99;"> = </span><span style="color:#d3d0c8;">" + val + "</span><span style="color:#66cccc;">\n</span><span style="color:#d3d0c8;">";
|
||||
</span><span style="color:#d3d0c8;"> }
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">(result, "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Post</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/submit</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> std::string result;
|
||||
</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">for </span><span style="color:#c0c5ce;">(</span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&[key, val] : req.</span><span style="color:#bf616a;">params</span><span style="color:#c0c5ce;">) {
|
||||
</span><span style="color:#c0c5ce;"> result += key + "</span><span style="color:#a3be8c;"> = </span><span style="color:#c0c5ce;">" + val + "</span><span style="color:#96b5b4;">\n</span><span style="color:#c0c5ce;">";
|
||||
</span><span style="color:#c0c5ce;"> }
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">(result, "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Post(</span><span style="color:#183691;">"/submit"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -229,12 +231,12 @@
|
||||
</div></div>
|
||||
<h3>File Uploads</h3>
|
||||
<p>Files uploaded via multipart form data are available through <code>req.form.get_file()</code>.</p>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Post</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/upload</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> f = req.</span><span style="color:#f2777a;">form</span><span style="color:#d3d0c8;">.</span><span style="color:#6699cc;">get_file</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">file</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> content = f.</span><span style="color:#f2777a;">filename </span><span style="color:#d3d0c8;">+ "</span><span style="color:#99cc99;"> (</span><span style="color:#d3d0c8;">" + </span><span style="color:#6699cc;">std::to_string</span><span style="color:#d3d0c8;">(f.</span><span style="color:#f2777a;">content</span><span style="color:#d3d0c8;">.</span><span style="color:#6699cc;">size</span><span style="color:#d3d0c8;">()) + "</span><span style="color:#99cc99;"> bytes)</span><span style="color:#d3d0c8;">";
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">(content, "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Post</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/upload</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">auto</span><span style="color:#c0c5ce;"> f = req.</span><span style="color:#bf616a;">form</span><span style="color:#c0c5ce;">.</span><span style="color:#8fa1b3;">get_file</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">file</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">auto</span><span style="color:#c0c5ce;"> content = f.</span><span style="color:#bf616a;">filename </span><span style="color:#c0c5ce;">+ "</span><span style="color:#a3be8c;"> (</span><span style="color:#c0c5ce;">" + </span><span style="color:#8fa1b3;">std::to_string</span><span style="color:#c0c5ce;">(f.</span><span style="color:#bf616a;">content</span><span style="color:#c0c5ce;">.</span><span style="color:#8fa1b3;">size</span><span style="color:#c0c5ce;">()) + "</span><span style="color:#a3be8c;"> bytes)</span><span style="color:#c0c5ce;">";
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">(content, "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Post(</span><span style="color:#183691;">"/upload"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -247,11 +249,11 @@
|
||||
<p><code>f.filename</code> gives you the filename, and <code>f.content</code> gives you the file data.</p>
|
||||
<h2>Path Parameters</h2>
|
||||
<p>Sometimes you want to capture part of the URL as a variable -- for example, the <code>42</code> in <code>/users/42</code>. Use the <code>:param</code> syntax to do that.</p>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/users/:id</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> id = req.</span><span style="color:#f2777a;">path_params</span><span style="color:#d3d0c8;">.</span><span style="color:#6699cc;">at</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">id</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">User ID: </span><span style="color:#d3d0c8;">" + id, "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/users/:id</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">auto</span><span style="color:#c0c5ce;"> id = req.</span><span style="color:#bf616a;">path_params</span><span style="color:#c0c5ce;">.</span><span style="color:#8fa1b3;">at</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">id</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">User ID: </span><span style="color:#c0c5ce;">" + id, "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Get(</span><span style="color:#183691;">"/users/:id"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -262,12 +264,12 @@
|
||||
</div></div>
|
||||
<p>A request to <code>/users/42</code> gives you <code>"42"</code> from <code>req.path_params.at("id")</code>. <code>/users/100</code> gives you <code>"100"</code>.</p>
|
||||
<p>You can capture multiple segments at once.</p>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/users/:user_id/posts/:post_id</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> user_id = req.</span><span style="color:#f2777a;">path_params</span><span style="color:#d3d0c8;">.</span><span style="color:#6699cc;">at</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">user_id</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> post_id = req.</span><span style="color:#f2777a;">path_params</span><span style="color:#d3d0c8;">.</span><span style="color:#6699cc;">at</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">post_id</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">User: </span><span style="color:#d3d0c8;">" + user_id + "</span><span style="color:#99cc99;">, Post: </span><span style="color:#d3d0c8;">" + post_id, "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/users/:user_id/posts/:post_id</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">auto</span><span style="color:#c0c5ce;"> user_id = req.</span><span style="color:#bf616a;">path_params</span><span style="color:#c0c5ce;">.</span><span style="color:#8fa1b3;">at</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">user_id</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">auto</span><span style="color:#c0c5ce;"> post_id = req.</span><span style="color:#bf616a;">path_params</span><span style="color:#c0c5ce;">.</span><span style="color:#8fa1b3;">at</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">post_id</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">User: </span><span style="color:#c0c5ce;">" + user_id + "</span><span style="color:#a3be8c;">, Post: </span><span style="color:#c0c5ce;">" + post_id, "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Get(</span><span style="color:#183691;">"/users/:user_id/posts/:post_id"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -279,12 +281,12 @@
|
||||
</div></div>
|
||||
<h3>Regex Patterns</h3>
|
||||
<p>You can also write a regular expression directly in the path instead of <code>:param</code>. Capture group values are available via <code>req.matches</code>, which is a <code>std::smatch</code>.</p>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#747369;">// Only accept numeric IDs
|
||||
</span><span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">(</span><span style="color:#cc99cc;">R</span><span style="color:#d3d0c8;">"(</span><span style="color:#99cc99;">/files/(\d+)</span><span style="color:#d3d0c8;">)", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> id = req.</span><span style="color:#f2777a;">matches</span><span style="color:#d3d0c8;">[</span><span style="color:#f99157;">1</span><span style="color:#d3d0c8;">]; </span><span style="color:#747369;">// First capture group
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">File ID: </span><span style="color:#d3d0c8;">" + </span><span style="color:#6699cc;">std::string</span><span style="color:#d3d0c8;">(id), "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#65737e;">// Only accept numeric IDs
|
||||
</span><span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">(</span><span style="color:#b48ead;">R</span><span style="color:#c0c5ce;">"(</span><span style="color:#a3be8c;">/files/(\d+)</span><span style="color:#c0c5ce;">)", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">auto</span><span style="color:#c0c5ce;"> id = req.</span><span style="color:#bf616a;">matches</span><span style="color:#c0c5ce;">[</span><span style="color:#d08770;">1</span><span style="color:#c0c5ce;">]; </span><span style="color:#65737e;">// First capture group
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">File ID: </span><span style="color:#c0c5ce;">" + </span><span style="color:#8fa1b3;">std::string</span><span style="color:#c0c5ce;">(id), "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="font-style:italic;color:#969896;">// Only accept numeric IDs
|
||||
@@ -299,10 +301,10 @@
|
||||
<p>The second parameter <code>res</code> is how you send data back to the client.</p>
|
||||
<h3>Body and Content-Type</h3>
|
||||
<p><code>res.set_content()</code> sets the body and Content-Type. That's all you need for a 200 response.</p>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/hi</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">Hello!</span><span style="color:#d3d0c8;">", "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/hi</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">Hello!</span><span style="color:#c0c5ce;">", "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Get(</span><span style="color:#183691;">"/hi"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -312,11 +314,11 @@
|
||||
</div></div>
|
||||
<h3>Status Code</h3>
|
||||
<p>To return a different status code, assign to <code>res.status</code>.</p>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/not-found</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#f2777a;">status </span><span style="color:#d3d0c8;">= </span><span style="color:#f99157;">404</span><span style="color:#d3d0c8;">;
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">Not found</span><span style="color:#d3d0c8;">", "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/not-found</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#bf616a;">status </span><span style="color:#c0c5ce;">= </span><span style="color:#d08770;">404</span><span style="color:#c0c5ce;">;
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">Not found</span><span style="color:#c0c5ce;">", "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Get(</span><span style="color:#183691;">"/not-found"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -327,11 +329,11 @@
|
||||
</div></div>
|
||||
<h3>Response Headers</h3>
|
||||
<p>Add response headers with <code>res.set_header()</code>.</p>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/with-header</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_header</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">X-Custom</span><span style="color:#d3d0c8;">", "</span><span style="color:#99cc99;">my-value</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">Hello!</span><span style="color:#d3d0c8;">", "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/with-header</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_header</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">X-Custom</span><span style="color:#c0c5ce;">", "</span><span style="color:#a3be8c;">my-value</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">Hello!</span><span style="color:#c0c5ce;">", "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Get(</span><span style="color:#183691;">"/with-header"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -343,10 +345,10 @@
|
||||
<h2>Walking Through the Test Server</h2>
|
||||
<p>Now let's use what we've learned to read through the test server from the previous chapter.</p>
|
||||
<h3>GET /hi</h3>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/hi</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">Hello!</span><span style="color:#d3d0c8;">", "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/hi</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">Hello!</span><span style="color:#c0c5ce;">", "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Get(</span><span style="color:#183691;">"/hi"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -356,11 +358,11 @@
|
||||
</div></div>
|
||||
<p>The simplest possible handler. We don't need any information from the request, so the <code>req</code> parameter is left unnamed. It just returns <code>"Hello!"</code>.</p>
|
||||
<h3>GET /search</h3>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/search</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> q = req.</span><span style="color:#6699cc;">get_param_value</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">q</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">Query: </span><span style="color:#d3d0c8;">" + q, "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/search</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">auto</span><span style="color:#c0c5ce;"> q = req.</span><span style="color:#8fa1b3;">get_param_value</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">q</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">Query: </span><span style="color:#c0c5ce;">" + q, "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Get(</span><span style="color:#183691;">"/search"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -371,10 +373,10 @@
|
||||
</div></div>
|
||||
<p><code>req.get_param_value("q")</code> pulls out the query parameter <code>q</code>. A request to <code>/search?q=cpp-httplib</code> returns <code>"Query: cpp-httplib"</code>.</p>
|
||||
<h3>POST /post</h3>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Post</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/post</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">(req.</span><span style="color:#f2777a;">body</span><span style="color:#d3d0c8;">, "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Post</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/post</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">(req.</span><span style="color:#bf616a;">body</span><span style="color:#c0c5ce;">, "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Post(</span><span style="color:#183691;">"/post"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -384,14 +386,14 @@
|
||||
</div></div>
|
||||
<p>An echo server. Whatever body the client sends, <code>req.body</code> holds it, and we send it straight back.</p>
|
||||
<h3>POST /submit</h3>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Post</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/submit</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> std::string result;
|
||||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">for </span><span style="color:#d3d0c8;">(</span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&[key, val] : req.</span><span style="color:#f2777a;">params</span><span style="color:#d3d0c8;">) {
|
||||
</span><span style="color:#d3d0c8;"> result += key + "</span><span style="color:#99cc99;"> = </span><span style="color:#d3d0c8;">" + val + "</span><span style="color:#66cccc;">\n</span><span style="color:#d3d0c8;">";
|
||||
</span><span style="color:#d3d0c8;"> }
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">(result, "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Post</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/submit</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> std::string result;
|
||||
</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">for </span><span style="color:#c0c5ce;">(</span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&[key, val] : req.</span><span style="color:#bf616a;">params</span><span style="color:#c0c5ce;">) {
|
||||
</span><span style="color:#c0c5ce;"> result += key + "</span><span style="color:#a3be8c;"> = </span><span style="color:#c0c5ce;">" + val + "</span><span style="color:#96b5b4;">\n</span><span style="color:#c0c5ce;">";
|
||||
</span><span style="color:#c0c5ce;"> }
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">(result, "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Post(</span><span style="color:#183691;">"/submit"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -405,12 +407,12 @@
|
||||
</div></div>
|
||||
<p>Loops over the form data in <code>req.params</code> using structured bindings (<code>auto &[key, val]</code>) to unpack each key-value pair.</p>
|
||||
<h3>POST /upload</h3>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Post</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/upload</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> f = req.</span><span style="color:#f2777a;">form</span><span style="color:#d3d0c8;">.</span><span style="color:#6699cc;">get_file</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">file</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> content = f.</span><span style="color:#f2777a;">filename </span><span style="color:#d3d0c8;">+ "</span><span style="color:#99cc99;"> (</span><span style="color:#d3d0c8;">" + </span><span style="color:#6699cc;">std::to_string</span><span style="color:#d3d0c8;">(f.</span><span style="color:#f2777a;">content</span><span style="color:#d3d0c8;">.</span><span style="color:#6699cc;">size</span><span style="color:#d3d0c8;">()) + "</span><span style="color:#99cc99;"> bytes)</span><span style="color:#d3d0c8;">";
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">(content, "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Post</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/upload</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">auto</span><span style="color:#c0c5ce;"> f = req.</span><span style="color:#bf616a;">form</span><span style="color:#c0c5ce;">.</span><span style="color:#8fa1b3;">get_file</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">file</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">auto</span><span style="color:#c0c5ce;"> content = f.</span><span style="color:#bf616a;">filename </span><span style="color:#c0c5ce;">+ "</span><span style="color:#a3be8c;"> (</span><span style="color:#c0c5ce;">" + </span><span style="color:#8fa1b3;">std::to_string</span><span style="color:#c0c5ce;">(f.</span><span style="color:#bf616a;">content</span><span style="color:#c0c5ce;">.</span><span style="color:#8fa1b3;">size</span><span style="color:#c0c5ce;">()) + "</span><span style="color:#a3be8c;"> bytes)</span><span style="color:#c0c5ce;">";
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">(content, "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Post(</span><span style="color:#183691;">"/upload"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -422,11 +424,11 @@
|
||||
</div></div>
|
||||
<p>Receives a file uploaded via multipart form data. <code>req.form.get_file("file")</code> fetches the field named <code>"file"</code>, and we respond with the filename and size.</p>
|
||||
<h3>GET /users/:id</h3>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">/users/:id</span><span style="color:#d3d0c8;">", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> id = req.</span><span style="color:#f2777a;">path_params</span><span style="color:#d3d0c8;">.</span><span style="color:#6699cc;">at</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">id</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">User ID: </span><span style="color:#d3d0c8;">" + id, "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">/users/:id</span><span style="color:#c0c5ce;">", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">auto</span><span style="color:#c0c5ce;"> id = req.</span><span style="color:#bf616a;">path_params</span><span style="color:#c0c5ce;">.</span><span style="color:#8fa1b3;">at</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">id</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">User ID: </span><span style="color:#c0c5ce;">" + id, "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Get(</span><span style="color:#183691;">"/users/:id"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -437,11 +439,11 @@
|
||||
</div></div>
|
||||
<p><code>:id</code> is the path parameter. <code>req.path_params.at("id")</code> retrieves its value. <code>/users/42</code> gives you <code>"42"</code>, <code>/users/alice</code> gives you <code>"alice"</code>.</p>
|
||||
<h3>GET /files/(\d+)</h3>
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2d2d2d;">
|
||||
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">Get</span><span style="color:#d3d0c8;">(</span><span style="color:#cc99cc;">R</span><span style="color:#d3d0c8;">"(</span><span style="color:#99cc99;">/files/(\d+)</span><span style="color:#d3d0c8;">)", [](</span><span style="color:#cc99cc;">const auto </span><span style="color:#d3d0c8;">&req, </span><span style="color:#cc99cc;">auto </span><span style="color:#d3d0c8;">&res) {
|
||||
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> id = req.</span><span style="color:#f2777a;">matches</span><span style="color:#d3d0c8;">[</span><span style="color:#f99157;">1</span><span style="color:#d3d0c8;">];
|
||||
</span><span style="color:#d3d0c8;"> res.</span><span style="color:#6699cc;">set_content</span><span style="color:#d3d0c8;">("</span><span style="color:#99cc99;">File ID: </span><span style="color:#d3d0c8;">" + </span><span style="color:#6699cc;">std::string</span><span style="color:#d3d0c8;">(id), "</span><span style="color:#99cc99;">text/plain</span><span style="color:#d3d0c8;">");
|
||||
</span><span style="color:#d3d0c8;">});
|
||||
<div class="code-block-wrapper"><div data-code-theme="dark"><pre style="background-color:#2b303b;">
|
||||
<span style="color:#c0c5ce;">svr.</span><span style="color:#8fa1b3;">Get</span><span style="color:#c0c5ce;">(</span><span style="color:#b48ead;">R</span><span style="color:#c0c5ce;">"(</span><span style="color:#a3be8c;">/files/(\d+)</span><span style="color:#c0c5ce;">)", [](</span><span style="color:#b48ead;">const auto </span><span style="color:#c0c5ce;">&req, </span><span style="color:#b48ead;">auto </span><span style="color:#c0c5ce;">&res) {
|
||||
</span><span style="color:#c0c5ce;"> </span><span style="color:#b48ead;">auto</span><span style="color:#c0c5ce;"> id = req.</span><span style="color:#bf616a;">matches</span><span style="color:#c0c5ce;">[</span><span style="color:#d08770;">1</span><span style="color:#c0c5ce;">];
|
||||
</span><span style="color:#c0c5ce;"> res.</span><span style="color:#8fa1b3;">set_content</span><span style="color:#c0c5ce;">("</span><span style="color:#a3be8c;">File ID: </span><span style="color:#c0c5ce;">" + </span><span style="color:#8fa1b3;">std::string</span><span style="color:#c0c5ce;">(id), "</span><span style="color:#a3be8c;">text/plain</span><span style="color:#c0c5ce;">");
|
||||
</span><span style="color:#c0c5ce;">});
|
||||
</span></pre>
|
||||
</div><div data-code-theme="light"><pre style="background-color:#ffffff;">
|
||||
<span style="color:#323232;">svr.Get(</span><span style="font-weight:bold;color:#a71d5d;">R</span><span style="color:#183691;">"(/files/(\d+))"</span><span style="color:#323232;">, [](</span><span style="font-weight:bold;color:#a71d5d;">const auto &</span><span style="color:#323232;">req, </span><span style="font-weight:bold;color:#a71d5d;">auto &</span><span style="color:#323232;">res) {
|
||||
@@ -462,7 +464,7 @@
|
||||
</div>
|
||||
|
||||
<footer class="footer">
|
||||
© 2026 yhirose. All rights reserved.
|
||||
© 2026 Yuji Hirose. All rights reserved.
|
||||
</footer>
|
||||
|
||||
<!-- Search modal -->
|
||||
|
||||
Reference in New Issue
Block a user