t.w.h.Request : class documentation

Part of twisted.web.http View Source View In Hierarchy

Known subclasses: twisted.web.proxy.ProxyRequest, twisted.web.proxy.ReverseProxyRequest, twisted.web.server.Request

Implements interfaces: twisted.internet.interfaces.IConsumer

A HTTP request.

Subclasses should override the process() method to determine how the request will be processed.

Instance Variables	method	The HTTP method that was used.
	uri	The full URI that was requested (includes arguments).
	path	The path only (arguments not included).
	args	All of the arguments, including URL and POST arguments. (type: A mapping of strings (the argument names) to lists of values. i.e., ?foo=bar&foo=baz&quux=spam results in {'foo': ['bar', 'baz'], 'quux': ['spam']}. )
	requestHeaders	All received HTTP request headers. (type: `http_headers.Headers` )
	received_headers	Backwards-compatibility access to `requestHeaders`. Use `requestHeaders` instead. `received_headers` behaves mostly like a `dict` and does not provide access to all header values.
	responseHeaders	All HTTP response headers to be sent. (type: `http_headers.Headers` )
	headers	Backwards-compatibility access to `responseHeaders`. Use `responseHeaders` instead. `headers` behaves mostly like a `dict` and does not provide access to all header values nor does it allow multiple values for one header to be set.
	notifications	A `list` of `Deferred`s which are waiting for notification that the response to this request has been finished (successfully or with an error). Don't use this attribute directly, instead use the `Request.notifyFinish` method.
	_disconnected	A flag which is `False` until the connection over which this request was received is closed and which is `True` after that. (type: `bool` )

Method	__init__
Method	__setattr__	Support assignment of `dict` instances to `received_headers` for backwards-compatibility.
Method	noLongerQueued	Notify the object that it is no longer queued.
Method	gotLength	Called when HTTP channel got length of content in this request.
Method	parseCookies	Parse cookie headers.
Method	handleContentChunk	Write a chunk of data.
Method	requestReceived	Called by channel when all data has been received.
Method	__repr__	Undocumented
Method	process	Override in subclasses.
Method	registerProducer	Register a producer.
Method	unregisterProducer	Unregister the producer.
Method	getHeader	Get an HTTP request header.
Method	getCookie	Get a cookie that was sent from the network.
Method	notifyFinish	Notify when the response to this request has finished.
Method	finish	Indicate that all response data has been written to this `Request`.
Method	write	Write some data as a result of an HTTP request. The first time this is called, it writes out response data.
Method	addCookie	Set an outgoing HTTP cookie.
Method	setResponseCode	Set the HTTP response code.
Method	setHeader	Set an HTTP response header. Overrides any previously set values for this header.
Method	redirect	Utility function that does a redirect.
Method	setLastModified	Set the `Last-Modified` time for the response to this request.
Method	setETag	Set an `entity tag` for the outgoing response.
Method	getAllHeaders	Return dictionary mapping the names of all received headers to the last value received for each.
Method	getRequestHostname	Get the hostname that the user passed in to the request.
Method	getHost	Get my originally requesting transport's host.
Method	setHost	Change the host and port the request thinks it's using.
Method	getClientIP	Return the IP address of the client who submitted this request.
Method	isSecure	Return True if this request is using a secure transport.
Method	getUser	Return the HTTP user sent with this request, if any.
Method	getPassword	Return the HTTP password sent with this request, if any.
Method	getClient	Undocumented
Method	connectionLost	There is no longer a connection for this request to respond over. Clean up anything which can't be useful anymore.
Method	_cleanup	Called when have finished responding and are no longer queued.
Method	_sendError	Undocumented
Method	_authorize	Undocumented

def __init__(self, channel, queued): (source)

overridden in twisted.web.proxy.ProxyRequest, twisted.web.proxy.ReverseProxyRequest, twisted.web.server.Request

Parameters	channel	the channel we're connected to.
	queued	are we in the request queue, or can we start writing to the transport?

def __setattr__(self, name, value): (source)

Support assignment of dict instances to received_headers for backwards-compatibility.

def _cleanup(self): (source)

Called when have finished responding and are no longer queued.

def noLongerQueued(self): (source)

Notify the object that it is no longer queued.

We start writing whatever data we have to the transport, etc.

This method is not intended for users.

def gotLength(self, length): (source)

Called when HTTP channel got length of content in this request.

This method is not intended for users.

Parameters length The length of the request body, as indicated by the request headers. None if the request headers do not indicate a length.

def parseCookies(self): (source)

Parse cookie headers.

This method is not intended for users.

def handleContentChunk(self, data): (source)

Write a chunk of data.

This method is not intended for users.

def requestReceived(self, command, path, version): (source)

Called by channel when all data has been received.

This method is not intended for users.

Parameters	command	The HTTP verb of this request. This has the case supplied by the client (eg, it maybe "get" rather than "GET"). (type: `str` )
	path	The URI of this request. (type: `str` )
	version	The HTTP version of this request. (type: `str` )

def __repr__(self): (source)

Undocumented

def process(self): (source)

overridden in twisted.web.proxy.ProxyRequest, twisted.web.proxy.ReverseProxyRequest, twisted.web.server.Request

Override in subclasses.

This method is not intended for users.

def registerProducer(self, producer, streaming): (source)

from twisted.internet.interfaces.IConsumer

overridden in twisted.web.distrib.Request

def unregisterProducer(self): (source)

from twisted.internet.interfaces.IConsumer

overridden in twisted.web.distrib.Request

Unregister the producer.

def _sendError(self, code, resp=''): (source)

Undocumented

def getHeader(self, key): (source)

Get an HTTP request header.

Parameters	key	The name of the header to get the value of. (type: `str` )
Returns	The value of the specified header, or `None` if that header was not present in the request. (type: `str` or `NoneType` )

def getCookie(self, key): (source)

Get a cookie that was sent from the network.

def notifyFinish(self): (source)

Notify when the response to this request has finished.

Returns A Deferred which will be triggered when the request is finished -- with a None value if the request finishes successfully or with an error if the request is interrupted by an error (for example, the client closing the connection prematurely). (type: Deferred )

def finish(self): (source)

Indicate that all response data has been written to this Request.

def write(self, data): (source)

from twisted.internet.interfaces.IConsumer

overridden in twisted.web.distrib.Request

Write some data as a result of an HTTP request. The first time this is called, it writes out response data.

Parameters data Some bytes to be sent as part of the response body. (type: str )

def addCookie(self, k, v, expires=None, domain=None, path=None, max_age=None, comment=None, secure=None): (source)

Set an outgoing HTTP cookie.

In general, you should consider using sessions instead of cookies, see twisted.web.server.Request.getSession and the twisted.web.server.Session class for details.

def setResponseCode(self, code, message=None): (source)

Set the HTTP response code.

def setHeader(self, name, value): (source)

Set an HTTP response header. Overrides any previously set values for this header.

Parameters	name	The name of the header for which to set the value. (type: `str` )
	value	The value to set for the named header. (type: `str` )

def redirect(self, url): (source)

Utility function that does a redirect.

The request should have finish() called after this.

def setLastModified(self, when): (source)

Set the Last-Modified time for the response to this request.

If I am called more than once, I ignore attempts to set Last-Modified earlier, only replacing the Last-Modified time if it is to a later value.

If I am a conditional request, I may modify my response code to NOT_MODIFIED if appropriate for the time given.

Parameters	when	The last time the resource being returned was modified, in seconds since the epoch. (type: number )
Returns	If I am a `If-Modified-Since` conditional request and the time given is not newer than the condition, I return `http.CACHED` to indicate that you should write no body. Otherwise, I return a false value.

def setETag(self, etag): (source)

Set an entity tag for the outgoing response.

That's "entity tag" as in the HTTP/1.1 ETag header, "used for comparing two or more entities from the same requested resource."

If I am a conditional request, I may modify my response code to NOT_MODIFIED or PRECONDITION_FAILED, if appropriate for the tag given.

Parameters	etag	The entity tag for the resource being returned. (type: string )
Returns	If I am a `If-None-Match` conditional request and the tag matches one in the request, I return `http.CACHED` to indicate that you should write no body. Otherwise, I return a false value.

def getAllHeaders(self): (source)

Return dictionary mapping the names of all received headers to the last value received for each.

Since this method does not return all header information, self.requestHeaders.getAllRawHeaders() may be preferred.

def getRequestHostname(self): (source)

Get the hostname that the user passed in to the request.

This will either use the Host: header (if it is available) or the host we are listening on if the header is unavailable.

Returns the requested hostname (type: str )

def getHost(self): (source)

Get my originally requesting transport's host.

Don't rely on the 'transport' attribute, since Request objects may be copied remotely. For information on this method's return value, see twisted.internet.tcp.Port.

def setHost(self, host, port, ssl=0): (source)

Change the host and port the request thinks it's using.

This method is useful for working with reverse HTTP proxies (e.g. both Squid and Apache's mod_proxy can do this), when the address the HTTP client is using is different than the one we're listening on.

For example, Apache may be listening on https://www.example.com, and then forwarding requests to http://localhost:8080, but we don't want HTML produced by Twisted to say 'http://localhost:8080', they should say 'https://www.example.com', so we do:

  request.setHost('www.example.com', 443, ssl=1)

Parameters	host	The value to which to change the host header. (type: `str` )
	ssl	A flag which, if `True`, indicates that the request is considered secure (if `True`, `isSecure` will return `True`). (type: `bool` )

def getClientIP(self): (source)

Return the IP address of the client who submitted this request.

Returns the client IP address (type: str )

def isSecure(self): (source)

Return True if this request is using a secure transport.

Normally this method returns True if this request's HTTPChannel instance is using a transport that implements ISSLTransport.

This will also return True if setHost() has been called with ssl=True.

Returns True if this request is secure (type: bool )

def _authorize(self): (source)

Undocumented

def getUser(self): (source)

Return the HTTP user sent with this request, if any.

If no user was supplied, return the empty string.

Returns the HTTP user, if any (type: str )

def getPassword(self): (source)

Return the HTTP password sent with this request, if any.

If no password was supplied, return the empty string.

Returns the HTTP password, if any (type: str )

def getClient(self): (source)

Undocumented

def connectionLost(self, reason): (source)

There is no longer a connection for this request to respond over. Clean up anything which can't be useful anymore.

API Documentation for Twisted, generated by pydoctor at 2011-10-27 16:17:34.