Function getProxyHost

src/Common/EnvironmentProxyConfigurationResolver.cpp:25–38

namespace
{
    const char * getProxyHost(DB::ProxyConfiguration::Protocol protocol)
    {
        /*
         * getenv is safe to use here because ClickHouse code does not make any call to `setenv` or `putenv`
         * aside from tests and a very early call during startup: https://github.com/ClickHouse/ClickHouse/blob/master/src/Daemon/BaseDaemon.cpp#L791
         * */
        switch (protocol)
        {
            case ProxyConfiguration::Protocol::HTTP:
                return std::getenv(PROXY_HTTP_ENVIRONMENT_VARIABLE); // NOLINT(concurrency-mt-unsafe)
            case ProxyConfiguration::Protocol::HTTPS:
                return std::getenv(PROXY_HTTPS_ENVIRONMENT_VARIABLE); // NOLINT(concurrency-mt-unsafe)
        }
    }

    const char * getNoProxyHosts()
    {