reported by honnef.co/go/tools/cmd/unused
rtmp_headers.go:145:2: field sb_ssl is unused (U1000)
rtmp_headers.go:167:2: field subscribepath is unused (U1000)
rtmp_headers.go:168:2: field usherToken is unused (U1000)
rtmp_headers.go:170:2: field pubUser is unused (U1000)
rtmp_headers.go:171:2: field pubPasswd is unused (U1000)
rtmp_headers.go:173:2: field edepth is unused (U1000)
rtmp_headers.go:175:2: field stopTime is unused (U1000)
rtmp_headers.go:180:2: field pFlags is unused (U1000)
rtmp_headers.go:189:2: field bufpos is unused (U1000)
rtmp_headers.go:190:2: field buflen is unused (U1000)
rtmp_headers.go:191:2: field timestamp is unused (U1000)
rtmp_headers.go:195:2: field initialFrameType is unused (U1000)
rtmp_headers.go:197:2: field metaHeader is unused (U1000)
rtmp_headers.go:198:2: field initialFrame is unused (U1000)
rtmp_headers.go:199:2: field nMetaHeaderSize is unused (U1000)
rtmp_headers.go:200:2: field nInitialFrameSize is unused (U1000)
rtmp_headers.go:223:2: field m_mediaStamp is unused (U1000)
rtmp_headers.go:224:2: field m_pauseStamp is unused (U1000)
rtmp_headers.go:245:2: field m_polling is unused (U1000)
rtmp_headers.go:248:2: field m_clientID is unused (U1000)