Standard library imports
- context
- crypto/md5
- encoding/base64
- encoding/hex
- encoding/json
- fmt
- go-common/app/service/live/rtc/common
- go-common/app/service/live/xcaptcha/api/grpc/v1
- go-common/app/service/live/xcaptcha/conf
- go-common/app/service/live/xcaptcha/dao
- go-common/library/ecode
- go-common/library/log
- go-common/library/sync/errgroup
- go-common/library/sync/pipeline/fanout
- math/rand
- strconv
- time