Generate headers in Twisted client

i'm using the Twisted web "HTTPClient" protocol to dialogue with a http server (using twisted app as a client), the problem is that most of my request do not accept my header. Is there some sort of way (maybe using certain libraries) to generate header?? I'll post 开发者_开发技巧some code so you can have a look

class Local(HTTPClient):
def generateHeaders(self, type=None):
    self.sendHeader('User-Agent', 'Twisted Web Client')
    if type:
        self.sendHeader('Content-Type', 'x-www-form-urlencoded')
    self.sendHeader('Accept', '*/*')
    self.sendHeader('Host', 'localhost')
    self.endHeaders()

def connectionMade(self):
    ## GENERATE ID
    self.userid= self.generateID()
    self.sendCommand('POST', '/chat/action=join&user=pirosb3')
    self.generateHeaders(type=True)

def dataReceived(self, data):
    print data

As you can see, i created a method that generates header for me, but not very efficient i must say, i always get error responses.

Anyone know a solution?

Thanks

I would definitely recommend you to use Twisted's Agent class along with the Header class in the twisted.web.http_headers module.

There is a nice guide available here.

If you need a real life example of a Twisted HTTP client which adds some headers to the request and can read the ones of the answer, here it is:

from pprint import pformat

from twisted.internet import reactor
from twisted.internet.defer import Deferred
from twisted.internet.protocol import Protocol
from twisted.web.client import Agent
from twisted.web.http_headers import Headers

class BeginningPrinter(Protocol):
    def __init__(self, finished):
        self.finished = finished
        self.remaining = 1024 * 10

    def dataReceived(self, bytes):
        if self.remaining:
            display = bytes[:self.remaining]
            print 'Some data received:'
            print display
            self.remaining -= len(display)

    def connectionLost(self, reason):
        print 'Finished receiving body:', reason.getErrorMessage()
        self.finished.callback(None)

agent = Agent(reactor)
d = agent.request(
    'GET',
    'http://example.com/',
    Headers({'User-Agent': ['Twisted Web Client Example']}),
    None)

def cbRequest(response):
    print 'Response version:', response.version
    print 'Response code:', response.code
    print 'Response phrase:', response.phrase
    print 'Response headers:'
    print pformat(list(response.headers.getAllRawHeaders()))
    finished = Deferred()
    response.deliverBody(BeginningPrinter(finished))
    return finished
d.addCallback(cbRequest)

def cbShutdown(ignored):
    reactor.stop()
d.addBoth(cbShutdown)

reactor.run()