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* Add initial documentations * Update documentation for Basic Client and add WebSocket section * feat: add a static site generator with multi-language support - Introduced a new Rust-based static site generator in the `docs-gen` directory. - Implemented core functionality for building sites from markdown files, including: - Configuration loading from `config.toml`. - Markdown rendering with frontmatter support. - Navigation generation based on page structure. - Static file copying and output directory management. - Added templates for base layout, pages, and portal. - Created a CSS file for styling and a JavaScript file for interactive features like language selection and theme toggling. - Updated documentation source with new configuration and example pages in English and Japanese. - Added a `justfile` target for building the documentation site. * Add language/theme toggle functionality - Created a new Japanese tour index page at docs/ja/tour/index.html - Implemented navigation links for various sections of the cpp-httplib tutorial - Added a language selector to switch between English and Japanese - Introduced theme toggle functionality to switch between light and dark modes - Added mobile sidebar toggle for better navigation on smaller screens
135 lines
3.9 KiB
Markdown
135 lines
3.9 KiB
Markdown
---
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title: "Static File Server"
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order: 4
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---
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cpp-httplib can serve static files too — HTML, CSS, images, you name it. No complicated configuration required. One call to `set_mount_point()` is all it takes.
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## The basics of set_mount_point
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Let's jump right in. `set_mount_point()` maps a URL path to a local directory.
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```cpp
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#include "httplib.h"
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#include <iostream>
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int main() {
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httplib::Server svr;
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svr.set_mount_point("/", "./html");
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std::cout << "Listening on port 8080..." << std::endl;
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svr.listen("0.0.0.0", 8080);
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}
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```
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The first argument is the URL mount point. The second is the local directory path. In this example, requests to `/` are served from the `./html` directory.
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Let's try it out. First, create an `html` directory and add an `index.html` file.
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```sh
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mkdir html
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```
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```html
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<!DOCTYPE html>
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<html>
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<head><title>My Page</title></head>
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<body>
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<h1>Hello from cpp-httplib!</h1>
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<p>This is a static file.</p>
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</body>
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</html>
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```
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Compile and start the server.
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```sh
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g++ -std=c++17 -o server server.cpp -pthread
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./server
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```
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Open `http://localhost:8080` in your browser. You should see the contents of `html/index.html`. Visiting `http://localhost:8080/index.html` returns the same page.
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You can also access it with the client code from the previous chapter, or with `curl`.
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```cpp
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httplib::Client cli("http://localhost:8080");
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auto res = cli.Get("/");
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if (res) {
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std::cout << res->body << std::endl; // HTML is displayed
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}
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```
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```sh
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curl http://localhost:8080
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```
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## Multiple mount points
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You can call `set_mount_point()` as many times as you like. Each URL path gets its own directory.
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```cpp
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svr.set_mount_point("/", "./public");
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svr.set_mount_point("/assets", "./static/assets");
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svr.set_mount_point("/docs", "./documentation");
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```
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A request to `/assets/style.css` serves `./static/assets/style.css`. A request to `/docs/guide.html` serves `./documentation/guide.html`.
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## Combining with handlers
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Static file serving and routing handlers — the kind you learned about in the previous chapter — work side by side.
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```cpp
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httplib::Server svr;
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// API endpoint
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svr.Get("/api/hello", [](const auto &, auto &res) {
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res.set_content(R"({"message":"Hello!"})", "application/json");
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});
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// Static file serving
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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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Handlers take priority. The handler responds to `/api/hello`. For every other path, the server looks for a file in `./public`.
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## Adding response headers
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Pass headers as the third argument to `set_mount_point()` and they get attached to every static file response. This is great for cache control.
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```cpp
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svr.set_mount_point("/", "./public", {
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{"Cache-Control", "max-age=3600"}
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});
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```
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With this in place, the browser caches served files for one hour.
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## A Dockerfile for your static file server
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The cpp-httplib repository includes a `Dockerfile` built for static file serving. We also publish a pre-built image on Docker Hub, so you can get up and running with a single command.
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```sh
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> docker run -p 8080:80 -v ./my-site:/html yhirose4dockerhub/cpp-httplib-server
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Serving HTTP on 0.0.0.0:80
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Mount point: / -> ./html
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Press Ctrl+C to shutdown gracefully...
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192.168.65.1 - - [22/Feb/2026:12:00:00 +0000] "GET / HTTP/1.1" 200 256 "-" "Mozilla/5.0 ..."
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192.168.65.1 - - [22/Feb/2026:12:00:00 +0000] "GET /style.css HTTP/1.1" 200 1024 "-" "Mozilla/5.0 ..."
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192.168.65.1 - - [22/Feb/2026:12:00:01 +0000] "GET /favicon.ico HTTP/1.1" 404 152 "-" "Mozilla/5.0 ..."
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```
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Everything in your `./my-site` directory gets served on port 8080. The access log follows the same format as NGINX, so you can see exactly what's happening.
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## What's next
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You can now serve static files. A web server that delivers HTML, CSS, and JavaScript — built with this little code.
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Next, let's encrypt your connections with HTTPS. We'll start by setting up a TLS library.
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**Next:** [TLS Setup](../05-tls-setup)
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