Imports github.com/xtaci/kcp-go/v5 gitlab.com/yawning/obfs4.git/common/ntor gitlab.com/yawning/obfs4.git/transports/base gitlab.com/yawning/obfs4.git/transports/obfs4 gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/goptlib Standard library imports bytes context crypto/rand encoding/base64 encoding/binary encoding/hex errors fmt io log net strconv