Type and Namespace

When deploying new contract code, Nodes perform checks against a whitelist. If any type used in the code is not listed in the whitelist, or if the method access or type name is denied, the deployment will fail. This ensures that only approved types and namespaces can be utilized within the contract code.

Assembly Dependencies#

Types and Members Whitelist in System Namespace#

Type	Member (Field / Method)	Allowed
Array	AsReadOnly	Allowed
Func<T>	ALL	Allowed
Func<T,T>	ALL	Allowed
Func<T,T,T>	ALL	Allowed
Nullable<T>	ALL	Allowed
Environment	CurrentManagedThreadId	Allowed
BitConverter	GetBytes	Allowed
NotImplementedException	ALL	Allowed
NotSupportedException	ALL	Allowed
ArgumentOutOfRangeException	ALL	Allowed
DateTime	Partially	Allowed
DateTime	Now, UtcNow, Today	Denied
Uri	TryCreate	Allowed
Uri	Scheme	Allowed
Uri	UriSchemeHttp	Allowed
Uri	UriSchemeHttps	Allowed
void	ALL	Allowed
object	ALL	Allowed
Type	ALL	Allowed
IDisposable	ALL	Allowed
Convert	ALL	Allowed
Math	ALL	Allowed
bool	ALL	Allowed
byte	ALL	Allowed
sbyte	ALL	Allowed
char	ALL	Allowed
int	ALL	Allowed
uint	ALL	Allowed
long	ALL	Allowed
ulong	ALL	Allowed
decimal	ALL	Allowed
string	ALL	Allowed
string	Constructor	Denied
Byte[]	ALL	Allowed

Types and Members Whitelist in System.Reflection Namespace#

Type	Member (Field / Method)	Allowed
AssemblyCompanyAttribute	ALL	Allowed
AssemblyConfigurationAttribute	ALL	Allowed
AssemblyFileVersionAttribute	ALL	Allowed
AssemblyInformationalVersionAttribute	ALL	Allowed
AssemblyProductAttribute	ALL	Allowed
AssemblyTitleAttribute	ALL	Allowed

Other Whitelisted Namespaces#

Namespace	Type	Member	Allowed
System.Linq	ALL	ALL	Allowed
System.Collections	ALL	ALL	Allowed
System.Collections.Generic	ALL	ALL	Allowed
System.Collections.ObjectModel	ALL	ALL	Allowed
System.Globalization	CultureInfo	InvariantCulture	Allowed
System.Runtime.CompilerServices	RuntimeHelpers	InitializeArray	Allowed
System.Text	Encoding	UTF8, GetByteCount	Allowed

Allowed Types for Arrays#

Type	Array Size Limit
byte	40960
short	20480
int	10240
long	5120
ushort	20480
uint	10240
ulong	5120
decimal	2560
char	20480
string	320
Type	5
Object	5
FileDescriptor	10
GeneratedClrTypeInfo	100

Edited on: 15 July 2024 03:36:54 GMT+0