twisted.web.client.Response

class documentation

class Response: (source)

Implements interfaces: twisted.web.iweb.IResponse

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A Response instance describes an HTTP response received from an HTTP server.

Response should not be subclassed or instantiated.

Method __init__
Method deliver​Body Dispatch the given IProtocol depending of the current state of the response.
Method set​Previous​Response Set the reference to the previous IResponse.
Instance Variable code The HTTP status code of this response, as a int.
Instance Variable headers The HTTP response Headers of this response.
Instance Variable phrase The HTTP reason phrase of this response, as a str.
Instance Variable previous​Response The previous IResponse from a redirect, or None if there was no previous response. This can be used to walk the response or request history for redirections.
Instance Variable request The IClientRequest that resulted in this response.
Instance Variable version A three-tuple describing the protocol and protocol version of the response. The first element is of type str, the second and third are of type int. For example, (b'HTTP', 1, 1).
Class Method _construct Private constructor.
Method _body​Data​Finished Called by HTTPClientParser when no more body data is available. If the optional reason is supplied, this indicates a problem or potential problem receiving all of the response body.
Method _body​Data​Finished_​CONNECTED Disconnect the protocol and move to the 'FINISHED' state.
Method _body​Data​Finished_​DEFERRED_​CLOSE It is invalid to attempt to notify the Response of the end of the response body data more than once.
Method _body​Data​Finished_​FINISHED It is invalid to attempt to notify the Response of the end of the response body data more than once.
Method _body​Data​Finished_​INITIAL Move to the 'DEFERRED_CLOSE' state to wait for a protocol to which to deliver the response body.
Method _body​Data​Received Called by HTTPClientParser with chunks of data from the response body. They will be buffered or delivered to the protocol passed to deliverBody.
Method _body​Data​Received_​CONNECTED Deliver any data received to the protocol to which this Response is connected.
Method _body​Data​Received_​DEFERRED_​CLOSE It is invalid for data to be delivered after it has been indicated that the response body has been completely delivered.
Method _body​Data​Received_​FINISHED It is invalid for data to be delivered after the response body has been delivered to a protocol.
Method _body​Data​Received_​INITIAL Buffer any data received for later delivery to a protocol passed to deliverBody.
Method _deliver​Body_​CONNECTED It is invalid to attempt to deliver data to a protocol when it is already being delivered to another protocol.
Method _deliver​Body_​DEFERRED_​CLOSE Deliver any buffered data to protocol and then disconnect the protocol. Move to the 'FINISHED' state.
Method _deliver​Body_​FINISHED It is invalid to attempt to deliver data to a protocol after the response body has been delivered to another protocol.
Method _deliver​Body_​INITIAL Deliver any buffered data to protocol and prepare to deliver any future data to it. Move to the 'CONNECTED' state.
Class Variable _body​Finished Undocumented
Instance Variable _body​Buffer A list of the strings passed to bodyDataReceived before deliverBody is called. None afterwards.
Instance Variable _body​Protocol The IProtocol provider to which the body is delivered. None before one has been registered with deliverBody.
Instance Variable _reason Undocumented
Instance Variable _state Indicates what state this Response instance is in, particularly with respect to delivering bytes from the response body to an application-supplied protocol object. This may be one of 'INITIAL', 'CONNECTED', 'DEFERRED_CLOSE', or 'FINISHED', with the following meanings:
Instance Variable _transport See __init__.
def __init__(self, version, code, phrase, headers, _transport): (source)
Parameters
versionHTTP version components protocol, major, minor. E.g. (b'HTTP', 1, 1) to mean b'HTTP/1.1'.
code:intHTTP status code.
phraseHTTP reason phrase, intended to give a short description of the HTTP status code.
headers:twisted.web.http_headers.HeadersHTTP response headers.
_transportThe transport which is delivering this response.
def deliverBody(self, protocol): (source)
from twisted.web.iweb.IResponse
Dispatch the given IProtocol depending of the current state of the response.
def setPreviousResponse(self, previousResponse): (source)
from twisted.web.iweb.IResponse

Set the reference to the previous IResponse.

The value of the previous response can be read via IResponse.previousResponse.

code = (source)
from twisted.web.iweb.IResponse
The HTTP status code of this response, as a int.
headers = (source)
from twisted.web.iweb.IResponse
The HTTP response Headers of this response.
phrase = (source)
from twisted.web.iweb.IResponse
The HTTP reason phrase of this response, as a str.
previousResponse = (source)
from twisted.web.iweb.IResponse
The previous IResponse from a redirect, or None if there was no previous response. This can be used to walk the response or request history for redirections.
request = (source)
from twisted.web.iweb.IResponse
The IClientRequest that resulted in this response.
version = (source)
from twisted.web.iweb.IResponse
A three-tuple describing the protocol and protocol version of the response. The first element is of type str, the second and third are of type int. For example, (b'HTTP', 1, 1).
@classmethod
def _construct(cls, version, code, phrase, headers, _transport, request): (source)
Private constructor.
Parameters
versionSee __init__.
codeSee __init__.
phraseSee __init__.
headersSee __init__.
_transportSee __init__.
requestSee IResponse.request.
Returns
Response instance.
def _bodyDataFinished(self, reason=None): (source)
Called by HTTPClientParser when no more body data is available. If the optional reason is supplied, this indicates a problem or potential problem receiving all of the response body.
def _bodyDataFinished_CONNECTED(self, reason=None): (source)
Disconnect the protocol and move to the 'FINISHED' state.
def _bodyDataFinished_DEFERRED_CLOSE(self): (source)
It is invalid to attempt to notify the Response of the end of the response body data more than once.
def _bodyDataFinished_FINISHED(self): (source)
It is invalid to attempt to notify the Response of the end of the response body data more than once.
def _bodyDataFinished_INITIAL(self, reason=None): (source)
Move to the 'DEFERRED_CLOSE' state to wait for a protocol to which to deliver the response body.
def _bodyDataReceived(self, data): (source)
Called by HTTPClientParser with chunks of data from the response body. They will be buffered or delivered to the protocol passed to deliverBody.
def _bodyDataReceived_CONNECTED(self, data): (source)
Deliver any data received to the protocol to which this Response is connected.
def _bodyDataReceived_DEFERRED_CLOSE(self, data): (source)
It is invalid for data to be delivered after it has been indicated that the response body has been completely delivered.
def _bodyDataReceived_FINISHED(self, data): (source)
It is invalid for data to be delivered after the response body has been delivered to a protocol.
def _bodyDataReceived_INITIAL(self, data): (source)

Buffer any data received for later delivery to a protocol passed to deliverBody.

Little or no data should be buffered by this method, since the transport has been paused and will not be resumed until a protocol is supplied.

def _deliverBody_CONNECTED(self, protocol): (source)
It is invalid to attempt to deliver data to a protocol when it is already being delivered to another protocol.
def _deliverBody_DEFERRED_CLOSE(self, protocol): (source)
Deliver any buffered data to protocol and then disconnect the protocol. Move to the 'FINISHED' state.
def _deliverBody_FINISHED(self, protocol): (source)
It is invalid to attempt to deliver data to a protocol after the response body has been delivered to another protocol.
def _deliverBody_INITIAL(self, protocol): (source)
Deliver any buffered data to protocol and prepare to deliver any future data to it. Move to the 'CONNECTED' state.
_bodyFinished: bool = (source)

Undocumented

_bodyBuffer = (source)
A list of the strings passed to bodyDataReceived before deliverBody is called. None afterwards.
_bodyProtocol = (source)
The IProtocol provider to which the body is delivered. None before one has been registered with deliverBody.
_reason = (source)

Undocumented

_state: str = (source)

Indicates what state this Response instance is in, particularly with respect to delivering bytes from the response body to an application-supplied protocol object. This may be one of 'INITIAL', 'CONNECTED', 'DEFERRED_CLOSE', or 'FINISHED', with the following meanings:

  • INITIAL: This is the state Response objects start in. No protocol has yet been provided and the underlying transport may still have bytes to deliver to it.
  • DEFERRED_CLOSE: If the underlying transport indicates all bytes have been delivered but no application-provided protocol is yet available, the Response moves to this state. Data is buffered and waiting for a protocol to be delivered to.
  • CONNECTED: If a protocol is provided when the state is INITIAL, the Response moves to this state. Any buffered data is delivered and any data which arrives from the transport subsequently is given directly to the protocol.
  • FINISHED: If a protocol is provided in the DEFERRED_CLOSE state, the Response moves to this state after delivering all buffered data to the protocol. Otherwise, if the Response is in the CONNECTED state, if the transport indicates there is no more data, the Response moves to this state. Nothing else can happen once the Response is in this state.
_transport = (source)
See __init__.