Method parse_request_line

dependencies/httplib/httplib.h:4967–5028

}

inline bool Server::parse_request_line(const char *s, Request &req) {
  auto len = strlen(s);
  if (len < 2 || s[len - 2] != '\r' || s[len - 1] != '\n') { return false; }
  len -= 2;

  {
    size_t count = 0;

    detail::split(s, s + len, ' ', [&](const char *b, const char *e) {
      switch (count) {
      case 0: req.method = std::string(b, e); break;
      case 1: req.target = std::string(b, e); break;
      case 2: req.version = std::string(b, e); break;
      default: break;
      }
      count++;
    });

    if (count != 3) { return false; }
  }

  static const std::set<std::string> methods{
      "GET",     "HEAD",    "POST",  "PUT",   "DELETE",
      "CONNECT", "OPTIONS", "TRACE", "PATCH", "PRI"};

  if (methods.find(req.method) == methods.end()) { return false; }

  if (req.version != "HTTP/1.1" && req.version != "HTTP/1.0") { return false; }

  {
    // Skip URL fragment
    for (size_t i = 0; i < req.target.size(); i++) {
      if (req.target[i] == '#') {
        req.target.erase(i);
        break;
      }
    }

    size_t count = 0;

    detail::split(req.target.data(), req.target.data() + req.target.size(), '?',
                  [&](const char *b, const char *e) {
                    switch (count) {
                    case 0:
                      req.path = detail::decode_url(std::string(b, e), false);
                      break;
                    case 1: {
                      if (e - b > 0) {
                        detail::parse_query_text(std::string(b, e), req.params);
                      }
                      break;
                    }
                    default: break;
                    }
                    count++;
                  });

    if (count > 2) { return false; }