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# ``twisted`.`web`.`client`.`Agent``

class documentation

`class Agent(_AgentBase): (source)`

Implements interfaces: `twisted.web.iweb.IAgent`

View In Hierarchy

`Agent` is a very basic HTTP client. It supports HTTP and HTTPS scheme URIs.

Present Since
9.0

Class Method | `usingEndpointFactory` | Create a new `Agent` that will use the endpoint factory to figure out how to connect to the server.
Method | `__init__` | Create an `Agent`.
Method | `request` | Issue a request to the server indicated by the given `uri`.
Method | `_getEndpoint` | Get an endpoint for the given URI, using `self._endpointFactory`.
Method | `_init` | Initialize a new `Agent`.
Instance Variable | `_endpointFactory` | The `IAgentEndpointFactory` which will be used to create endpoints for outgoing connections.
Instance Variable | `_pool` | An `HTTPConnectionPool` instance.

Inherited from `_AgentBase`:

Method | `_computeHostValue` | Compute the string to use for the value of the Host header, based on the given scheme, host name, and port number.
Method | `_requestWithEndpoint` | Issue a new request, given the endpoint and the path sent as part of the request.
Instance Variable | `_reactor` | The `IReactorTime` implementation which will be used by the pool, and perhaps by subclasses as well.

@classmethod
def usingEndpointFactory(cls, reactor, endpointFactory, pool=None): (source)

Create a new `Agent` that will use the endpoint factory to figure out how to connect to the server.

Parameters
reactor:see `HostnameEndpoint.__init__` for acceptable reactor types. | A reactor for this `Agent` to place outgoing connections.
endpointFactory:an `IAgentEndpointFactory` provider. | Used to construct endpoints which the HTTP client will connect with.
pool:`HTTPConnectionPool` | An `HTTPConnectionPool` instance, or `None`, in which case a non-persistent `HTTPConnectionPool` instance will be created.
Returns
A new `Agent`.

def __init__(self, reactor, contextFactory=BrowserLikePolicyForHTTPS(), connectTimeout=None, bindAddress=None, pool=None): (source)
overrides `twisted.web.client._AgentBase.__init__`

Create an `Agent`.

Parameters
reactor:see `HostnameEndpoint.__init__` for acceptable reactor types. | A reactor for this `Agent` to place outgoing connections.
contextFactory:`IPolicyForHTTPS`. | A factory for TLS contexts, to control the verification parameters of OpenSSL. The default is to use a `BrowserLikePolicyForHTTPS`, so unless you have special requirements you can leave this as-is.
connectTimeout:`float` | The amount of time that this `Agent` will wait for the peer to accept a connection.
bindAddress:`bytes` | The local address for client sockets to bind to.
pool:`HTTPConnectionPool` | An `HTTPConnectionPool` instance, or `None`, in which case a non-persistent `HTTPConnectionPool` instance will be created.

def request(self, method, uri, headers=None, bodyProducer=None): (source)
from `twisted.web.iweb.IAgent`

Issue a request to the server indicated by the given `uri`.

An existing connection from the connection pool may be used or a new one may be created.

HTTP and HTTPS schemes are supported in `uri`.

See Also
`twisted.web.iweb.IAgent.request`

def _getEndpoint(self, uri): (source)

Get an endpoint for the given URI, using `self._endpointFactory`.

Parameters
uri:`URI` | The URI of the request.
Returns
An endpoint which can be used to connect to given address.

def _init(self, reactor, endpointFactory, pool): (source)

Initialize a new `Agent`.

Parameters
reactor:see `HostnameEndpoint.__init__` for acceptable reactor types. | A reactor for this `Agent` to place outgoing connections.
endpointFactory:an `IAgentEndpointFactory` provider. | Used to construct endpoints which the HTTP client will connect with.
pool:`HTTPConnectionPool` | An `HTTPConnectionPool` instance, or `None`, in which case a non-persistent `HTTPConnectionPool` instance will be created.
Returns
A new `Agent`.

_endpointFactory = (source)

The `IAgentEndpointFactory` which will be used to create endpoints for outgoing connections.

_pool = (source)
overrides `twisted.web.client._AgentBase._pool`

An `HTTPConnectionPool` instance.