Function to_lower_copy

tools/server/server-models.cpp:1106–1110

};

static std::string to_lower_copy(const std::string & value) {
    std::string lowered(value.size(), '\0');
    std::transform(value.begin(), value.end(), lowered.begin(), [](unsigned char c) { return std::tolower(c); });
    return lowered;
}

static bool should_strip_proxy_header(const std::string & header_name) {
    // Headers that get duplicated when router forwards child responses