twisted.web._newclient.LengthEnforcingConsumer

class documentation

class LengthEnforcingConsumer: (source)

An IConsumer proxy which enforces an exact length requirement on the total data written to it.

Method	`__init__`	Undocumented
Method	`write`	Write `bytes` to the underlying consumer unless `_noMoreWritesExpected` has been called or there are/have been too many bytes.
Method	`_allowNoMoreWrites`	Indicate that no additional writes are allowed. Attempts to write after calling this method will be met with an exception.
Method	`_noMoreWritesExpected`	Called to indicate no more bytes will be written to this consumer. Check to see that the correct number have been written.
Instance Variable	`_consumer`	The consumer to which at most `_length` bytes will be forwarded.
Instance Variable	`_finished`	A `Deferred` which will be fired with a `Failure` if too many bytes are written to this consumer.
Instance Variable	`_length`	The number of bytes remaining to be written.
Instance Variable	`_producer`	The `IBodyProducer` which is writing to this consumer.

def __init__(self, producer, consumer, finished): (source) ¶

Undocumented

Write bytes to the underlying consumer unless _noMoreWritesExpected has been called or there are/have been too many bytes.

def _allowNoMoreWrites(self): (source) ¶

Indicate that no additional writes are allowed. Attempts to write after calling this method will be met with an exception.

def _noMoreWritesExpected(self): (source) ¶

Called to indicate no more bytes will be written to this consumer. Check to see that the correct number have been written.

Raises
`WrongBodyLength`	If not enough bytes have been written.

The consumer to which at most _length bytes will be forwarded.

A Deferred which will be fired with a Failure if too many bytes are written to this consumer.

The number of bytes remaining to be written.

The IBodyProducer which is writing to this consumer.