Imports github.com/sagernet/sing/common/metadata github.com/sagernet/sing/protocol/socks github.com/sagernet/sing/protocol/socks/socks5 golang.zx2c4.com/wireguard/wgctrl/wgtypes Standard library imports bytes context crypto/sha256 crypto/tls crypto/x509 encoding/base64 encoding/hex errors fmt io net net/http net/url os strconv strings sync