Imports github.com/andybalholm/brotli github.com/refraction-networking/utls github.com/useflyent/fhttp github.com/useflyent/fhttp/cookiejar github.com/useflyent/fhttp/http2 golang.org/x/net/http2 golang.org/x/net/proxy Standard library imports bufio bytes compress/gzip compress/zlib context crypto/tls encoding/base64 encoding/json errors fmt io io/ioutil log net net/http net/http/cookiejar net/textproto net/url strings sync time