#include <httplib.h>

int main(void)
{
  using namespace httplib;

  Server svr;

  svr.Get("/hi", [](const Request& req, Response& res) {
    res.set_content("Hello World!", "text/plain");
  });

  svr.Get(R"(/numbers/(\d+))", [&](const Request& req, Response& res) {
    auto numbers = req.matches[1];
    res.set_content(numbers, "text/plain");
  });

  svr.Get("/stop", [&](const Request& req, Response& res) {
    svr.stop();
  });

  svr.listen("localhost", 1234);
}

int port = svr.bind_to_any_port("0.0.0.0");
svr.listen_after_bind();

// Mount / to ./www directory
auto ret = svr.set_mount_point("/", "./www");
if (!ret) {
  // The specified base directory doesn't exist...
}

// Mount /public to ./www directory
ret = svr.set_mount_point("/public", "./www");

// Mount /public to ./www1 and ./www2 directories
ret = svr.set_mount_point("/public", "./www1"); // 1st order to search
ret = svr.set_mount_point("/public", "./www2"); // 2nd order to search

// Remove mount /
ret = svr.remove_mount_point("/");

// Remove mount /public
ret = svr.remove_mount_point("/public");

// User defined file extension and MIME type mappings
svr.set_file_extension_and_mimetype_mapping("cc", "text/x-c");
svr.set_file_extension_and_mimetype_mapping("cpp", "text/x-c");
svr.set_file_extension_and_mimetype_mapping("hh", "text/x-h");

svr.set_logger([](const auto& req, const auto& res) {
  your_logger(req, res);
});

svr.set_error_handler([](const auto& req, auto& res) {
  auto fmt = "<p>Error Status: <span style='color:red;'>%d</span></p>";
  char buf[BUFSIZ];
  snprintf(buf, sizeof(buf), fmt, res.status);
  res.set_content(buf, "text/html");
});

svr.Post("/multipart", [&](const auto& req, auto& res) {
  auto size = req.files.size();
  auto ret = req.has_file("name1");
  const auto& file = req.get_file_value("name1");
  // file.filename;
  // file.content_type;
  // file.content;
});

svr.Post("/content_receiver",
  [&](const Request &req, Response &res, const ContentReader &content_reader) {
    if (req.is_multipart_form_data()) {
      MultipartFormDataItems files;
      content_reader(
        [&](const MultipartFormData &file) {
          files.push_back(file);
          return true;
        },
        [&](const char *data, size_t data_length) {
          files.back().content.append(data, data_length);
          return true;
        });
    } else {
      std::string body;
      content_reader([&](const char *data, size_t data_length) {
        body.append(data, data_length);
        return true;
      });
      res.set_content(body, "text/plain");
    }
  });

const uint64_t DATA_CHUNK_SIZE = 4;

svr.Get("/stream", [&](const Request &req, Response &res) {
  auto data = new std::string("abcdefg");

  res.set_content_provider(
    data->size(), // Content length
    [data](uint64_t offset, uint64_t length, DataSink &sink) {
      const auto &d = *data;
      sink.write(&d[offset], std::min(length, DATA_CHUNK_SIZE));
    },
    [data] { delete data; });
});

svr.Get("/chunked", [&](const Request& req, Response& res) {
  res.set_chunked_content_provider(
    [](uint64_t offset, DataSink &sink) {
       sink.write("123", 3);
       sink.write("345", 3);
       sink.write("789", 3);
       sink.done();
    }
  );
});

class YourThreadPoolTaskQueue : public TaskQueue {
public:
  YourThreadPoolTaskQueue(size_t n) {
    pool_.start_with_thread_count(n);
  }

  virtual void enqueue(std::function<void()> fn) override {
    pool_.enqueue(fn);
  }

  virtual void shutdown() override {
    pool_.shutdown_gracefully();
  }

private:
  YourThreadPool pool_;
};

svr.new_task_queue = [] {
  return new YourThreadPoolTaskQueue(12);
};

// Send a '417 Expectation Failed' response.
svr.set_expect_100_continue_handler([](const Request &req, Response &res) {
  return 417;
});

// Send a final status without reading the message body.
svr.set_expect_100_continue_handler([](const Request &req, Response &res) {
  return res.status = 401;
});

#include <httplib.h>
#include <iostream>

int main(void)
{
  // IMPORTANT: 1st parameter must be a hostname or an IP adress string.
  httplib::Client cli("localhost", 1234);

  auto res = cli.Get("/hi");
  if (res && res->status == 200) {
    std::cout << res->body << std::endl;
  }
}

httplib::Headers headers = {
  { "Accept-Encoding", "gzip, deflate" }
};
auto res = cli.Get("/hi", headers);

std::string body;

auto res = cli.Get("/large-data",
  [&](const char *data, uint64_t data_length) {
    body.append(data, data_length);
    return true;
  });

assert(res->body.empty());

res = cli.Post("/post", "text", "text/plain");
res = cli.Post("/person", "name=john1&note=coder", "application/x-www-form-urlencoded");

httplib::Params params;
params.emplace("name", "john");
params.emplace("note", "coder");

auto res = cli.Post("/post", params);

httplib::Params params{
  { "name", "john" },
  { "note", "coder" }
};

auto res = cli.Post("/post", params);

httplib::MultipartFormDataItems items = {
  { "text1", "text default", "", "" },
  { "text2", "aωb", "", "" },
  { "file1", "h\ne\n\nl\nl\no\n", "hello.txt", "text/plain" },
  { "file2", "{\n  \"world\", true\n}\n", "world.json", "application/json" },
  { "file3", "", "", "application/octet-stream" },
};

auto res = cli.Post("/multipart", items);

res = cli.Put("/resource/foo", "text", "text/plain");

res = cli.Delete("/resource/foo");

res = cli.Options("*");
res = cli.Options("/resource/foo");

cli.set_timeout_sec(5); // timeouts in 5 seconds

httplib::Client client(url, port);

// prints: 0 / 000 bytes => 50% complete
std::shared_ptr<httplib::Response> res =
  cli.Get("/", [](uint64_t len, uint64_t total) {
    printf("%lld / %lld bytes => %d%% complete\n",
      len, total,
      (int)((len/total)*100));
    return true; // return 'false' if you want to cancel the request.
  }
);

// Basic Authentication
cli.set_basic_auth("user", "pass");

// Digest Authentication
cli.set_digest_auth("user", "pass");

cli.set_proxy("host", port);

// Basic Authentication
cli.set_proxy_basic_auth("user", "pass");

// Digest Authentication
cli.set_proxy_digest_auth("user", "pass");

httplib::Client cli("httpbin.org");

auto res = cli.Get("/range/32", {
  httplib::make_range_header({{1, 10}}) // 'Range: bytes=1-10'
});
// res->status should be 206.
// res->body should be "bcdefghijk".

httplib::make_range_header({{1, 10}, {20, -1}})      // 'Range: bytes=1-10, 20-'
httplib::make_range_header({{100, 199}, {500, 599}}) // 'Range: bytes=100-199, 500-599'
httplib::make_range_header({{0, 0}, {-1, 1}})        // 'Range: bytes=0-0, -1'

cli.set_keep_alive_max_count(2); // Default is 5

std::vector<Request> requests;
Get(requests, "/get-request1");
Get(requests, "/get-request2");
Post(requests, "/post-request1", "text", "text/plain");
Post(requests, "/post-request2", "text", "text/plain");

std::vector<Response> responses;
if (cli.send(requests, responses)) {
  for (const auto& res: responses) {
    ...
  }
}

httplib::Client cli("yahoo.com");

auto res = cli.Get("/");
res->status; // 301

cli.set_follow_location(true);
res = cli.Get("/");
res->status; // 200

cli.set_interface("eth0"); // Interface name, IP address or host name

#define CPPHTTPLIB_OPENSSL_SUPPORT

SSLServer svr("./cert.pem", "./key.pem");

SSLClient cli("localhost", 8080);
cli.set_ca_cert_path("./ca-bundle.crt");
cli.enable_server_certificate_verification(true);

cli.set_compress(true);
res = cli.Post("/resource/foo", "...", "text/plain");