race detection

[jjhesk]

==================
WARNING: DATA RACE
Write at 0x00c000281f80 by goroutine 54:
runtime.slicecopy()
/usr/local/Cellar/go/1.11.4/libexec/src/runtime/slice.go:221 +0x0
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket/io.(*ByteBuffer).Write()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket/io/bytebuffer.go:78 +0x130
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket.(*messageSerializer).serialize()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket/message.go:90 +0xda
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket.(*emitter).Emit()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket/emitter.go:40 +0x11a
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket.(*connection).Emit()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket/connection.go:531 +0x8a
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/core_x.StartWebsocket.func1.12()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/core_x/ws_core.go:375 +0x71

Previous read at 0x00c000281f80 by goroutine 56:
runtime.slicecopy()
/usr/local/Cellar/go/1.11.4/libexec/src/runtime/slice.go:221 +0x0
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket.(*emitter).Emit()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket/emitter.go:46 +0x236
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/core_x.ReturnAuth()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/core_x/ws_core.go:465 +0x113
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/core_x.StartWebsocket.func1.3.2()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/core_x/ws_core.go:211 +0x166
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/fund/sql.UserLogin()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/fund/sql/rawsql.go:35 +0x21b
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/core_x.StartWebsocket.func1.3()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/core_x/ws_core.go:157 +0x340
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket.(*connection).messageReceived()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket/connection.go:443 +0x4f7
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket.(*connection).startReader()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket/connection.go:413 +0x25e
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket.(*connection).Wait()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket/connection.go:587 +0x8f
_/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket.(*Server).Handler.func1()
/Users/hesk/Documents/bigbangsurvivalrun/backendc/main/common/websocket/server.go:108 +0x155
github.com/kataras/iris/context.DefaultNext()
/Users/hesk/go/src/github.com/kataras/iris/context/context.go:1208 +0x134

i have checked for many time that there is a race detection over the this byte operations. I cant think of a solution to resolve this..