使用Python中的OAuth的Twitter流在两个同等配置的计算机上表现不同

我有相同的编码来处理在两台不同的机器上运行的Twitter用户流.这两台机器都是使用python 2.6.5的Ubuntu Lucid,但是在我家的机器上,我收到了HTTP错误401：未经授权,而在大学它完美运行.在两台机器上,当我使用具有相同参数的curl时,它完美地工作,即消费者密钥,消费者密钥,访问令牌和访问密钥.

请参阅下面的代码,它是由Josh Sharp创建的

from oauth.oauth import OAuthRequest, OAuthSignatureMethod_HMAC_SHA1
from hashlib import md5
import json, time
import random, math, re, urllib, urllib2

STREAM_URL = "https://userstream.twitter.com/2/user.json"

class Token(object):
    def __init__(self,key,secret):
        self.key = key
        self.secret = secret

    def _generate_nonce(self):
        random_number = ''.join(str(random.randint(0, 9)) for i in range(40))
        m = md5(str(time.time()) + str(random_number))
        return m.hexdigest() 

CONSUMER_KEY = 'consumer_key'
CONSUMER_SECRET = 'consumer_secret'
ACCESS_TOKEN = 'token'
ACCESS_TOKEN_SECRET = 'token_secret'

access_token = Token(ACCESS_TOKEN,ACCESS_TOKEN_SECRET)
consumer = Token(CONSUMER_KEY,CONSUMER_SECRET)

parameters = {
    'oauth_consumer_key': CONSUMER_KEY,
    'oauth_token': access_token.key,
    'oauth_signature_method': 'HMAC-SHA1',
    'oauth_timestamp': str(int(time.time())),
    'oauth_nonce': access_token._generate_nonce(),
    'oauth_version': '1.0',
}


oauth_request = OAuthRequest.from_token_and_callback(access_token,
                http_url=STREAM_URL, 
                parameters=parameters)
signature_method = OAuthSignatureMethod_HMAC_SHA1()
signature = signature_method.build_signature(oauth_request, consumer, access_token)

parameters['oauth_signature'] = signature

data = urllib.urlencode(parameters)

req = urllib2.urlopen("%s?%s" % (STREAM_URL,data))
buffer = ''


# We're using urllib2 to avoid external dependencies
# even though pyCurl actually handles the callbacks
# much more gracefully than this clumsy method.
# We read a byte at a time until we find a newline
# which indicates the end of a chunk.

while True:

    chunk = req.read(1)
    if not chunk:
        print buffer
        break

    chunk = unicode(chunk)
    buffer += chunk

    tweets = buffer.split("\n",1)
    if len(tweets) > 1:
        print tweets[0]
        buffer = tweets[1]

我尝试在家中执行时的错误是：

File "py_stream.py", line 48, in <module>
req = urllib2.urlopen("%s?%s" % (STREAM_URL,data))
File "/usr/lib/python2.6/urllib2.py", line 126, in urlopen
  return _opener.open(url, data, timeout)
File "/usr/lib/python2.6/urllib2.py", line 397, in open
  response = meth(req, response)
File "/usr/lib/python2.6/urllib2.py", line 510, in http_response
  'http', request, response, code, msg, hdrs)
File "/usr/lib/python2.6/urllib2.py", line 435, in error
  return self._call_chain(*args)
File "/usr/lib/python2.6/urllib2.py", line 369, in _call_chain
  result = func(*args)
File "/usr/lib/python2.6/urllib2.py", line 518, in http_error_default
  raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 401: Unauthorized

由于它在两台机器上使用curl工作,我认为与SSL认证没有任何关系.但与此同时,它让我想知道当我在家中使用它时失败了.

解决方法:

经过几周试图找出问题所在,我发现时钟与负责Twitter Stream的人没有很好地同步.因此,Twitter返回401：未经授权.

如果您使用的是Ubuntu,可以使用ntpdate解决此问题,如下所示：

sudo ntpdate ntp.ubuntu.com

标签：python,twitter,urllib2,twitter-oauth,http-status-code-401
来源： https://codeday.me/bug/20190530/1184260.html