Package tlslite :: Module extensions :: Class NPNExtension
[hide private]
[frames] | no frames]

Class NPNExtension

source code


This class handles the unofficial Next Protocol Negotiation TLS extension.

Instance Methods [hide private]
 
__init__(self)
Create an instance of NPNExtension
source code
str
__repr__(self)
Create programmer-readable version of representation
source code
TLSExtension
create(self, protocols=None)
Create an instance of NPNExtension with specified protocols
source code
NPNExtension
parse(self, p)
Parse the extension from on the wire format
source code

Inherited from TLSExtension: __eq__, write

Inherited from TLSExtension (private): _newCreate, _oldCreate

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __str__, __subclasshook__

Static Methods [hide private]

Inherited from TLSExtension (private): _parseExt

Class Variables [hide private]
Instance Variables [hide private]
bytearray extData
a byte array containing the value of the extension as to be written on the wire
int extType
a 2^16-1 limited integer specifying the type of the extension that it contains, e.g.
list of bytearrays protocols
list of protocol names supported by the server

Inherited from TLSExtension: serverType

Properties [hide private]

Inherited from object: __class__

Method Details [hide private]

__init__(self)
(Constructor)

source code 

Create an instance of NPNExtension

See also: create and parse

Parameters:
  • server - whether to select ClientHello or ServerHello version for parsing
  • extType - type of extension encoded as an integer, to be used by subclasses
Overrides: object.__init__

__repr__(self)
(Representation operator)

source code 

Create programmer-readable version of representation

Returns: str
Overrides: object.__repr__

create(self, protocols=None)

source code 

Create an instance of NPNExtension with specified protocols

Parameters:
  • protocols (list of bytearray) - list of protocol names that are supported
Returns: TLSExtension
Overrides: TLSExtension.create

parse(self, p)

source code 

Parse the extension from on the wire format

Parameters:
Returns: NPNExtension
Raises:
  • SyntaxError - when the size of the passed element doesn't match the internal representation
Overrides: TLSExtension.parse

Instance Variable Details [hide private]

extData

a byte array containing the value of the extension as to be written on the wire
Get Method:
unreachable.extData(self) - Return the raw data encoding of the extension
Type:
bytearray

extType

a 2^16-1 limited integer specifying the type of the extension that it contains, e.g. 0 indicates server name extension
Type:
int