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56 lines
1.7 KiB
Markdown
56 lines
1.7 KiB
Markdown
---
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title: "S04. Serve Static Files"
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order: 23
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status: "draft"
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---
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To serve static files like HTML, CSS, and images, use `set_mount_point()`. Just map a URL path to a local directory, and the whole directory becomes accessible.
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## Basic usage
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```cpp
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httplib::Server svr;
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svr.set_mount_point("/", "./public");
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svr.listen("0.0.0.0", 8080);
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```
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`./public/index.html` is now reachable at `http://localhost:8080/index.html`, and `./public/css/style.css` at `http://localhost:8080/css/style.css`. The directory layout maps directly to URLs.
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## Multiple mount points
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You can register more than one mount point.
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```cpp
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svr.set_mount_point("/", "./public");
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svr.set_mount_point("/assets", "./dist/assets");
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svr.set_mount_point("/uploads", "./var/uploads");
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```
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You can even mount multiple directories at the same path — they're searched in registration order, and the first hit wins.
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## Combine with API handlers
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Static files and API handlers coexist happily. Handlers registered with `Get()` and friends take priority; the mount points are searched only when nothing matches.
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```cpp
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svr.Get("/api/users", [](const auto &req, auto &res) {
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res.set_content("[]", "application/json");
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});
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svr.set_mount_point("/", "./public");
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```
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This gives you an SPA-friendly setup: `/api/*` hits the handlers, everything else is served from `./public/`.
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## Add MIME types
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cpp-httplib ships with a built-in extension-to-Content-Type map, but you can add your own.
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```cpp
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svr.set_file_extension_and_mimetype_mapping("wasm", "application/wasm");
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```
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> **Warning:** The static file server methods are **not thread-safe**. Don't call them after `listen()` — configure everything before starting the server.
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> For download-style responses, see S06. Return a File Download Response.
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