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# ``twisted`.`protocols`.`htb`.`FilterByHost``

class documentation

`class FilterByHost(HierarchicalBucketFilter): (source)`

Constructor: `FilterByHost(parentFilter)`

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A Hierarchical Bucket filter with a `Bucket` for each host.

Method | `getBucketKey` | Construct a key based on the input parameters to choose a `Bucket`.
Class Variable | `sweepInterval` | Undocumented

Inherited from `HierarchicalBucketFilter`:

Method | `__init__` | Undocumented
Method | `getBucketFor` | Find or create a `Bucket` corresponding to the provided parameters.
Method | `sweep` | Remove empty buckets.
Class Variable | `bucketFactory` | Class of buckets to make.
Instance Variable | `buckets` | Undocumented
Instance Variable | `lastSweep` | Undocumented
Instance Variable | `parentFilter` | Undocumented

def getBucketKey(self, transport): (source)
overrides `twisted.protocols.htb.HierarchicalBucketFilter.getBucketKey`

Construct a key based on the input parameters to choose a `Bucket`.

The default implementation returns the same key for all arguments. Override this method to provide `Bucket` selection.

Returns
Something to be used as a key in the bucket cache.

sweepInterval = (source)
overrides `twisted.protocols.htb.HierarchicalBucketFilter.sweepInterval`

Undocumented