kCFStreamErrorSOCKS4IdConflict
kCFStreamErrorSOCKS4IdentdFailed
kCFStreamErrorSOCKS4RequestFailed
kCFStreamErrorSOCKS4SubDomainResponse
kCFStreamErrorSOCKS5BadResponseAddr
kCFStreamErrorSOCKS5BadState
kCFStreamErrorSOCKS5SubDomainMethod
kCFStreamErrorSOCKS5SubDomainResponse
kCFStreamErrorSOCKS5SubDomainUserPass
kCFStreamErrorSOCKSSubDomainNone
kCFStreamErrorSOCKSSubDomainVersionCode
kCFStreamErrorSOCKSUnknownClientVersion
kSOCKS5NoAcceptableMethod