Question

我们正在使用Firebase身份验证进行测试，我们正在检查python SDK。尝试从Firebase用户进行简单的获取用户操作会导致以下错误：

TransportError: HTTPSConnectionPool(host='accounts.google.com', port=443): Max retries exceeded with url: /o/oauth2/token (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.",))

我们从本地服务器测试然后从暂存GAE URL进行测试，因为我们最初的想法是可能与Firebase 通信需要请求来自Https URL。但是，在这两种情况下，我们都看到了同样的错误。那可能是别的了。

使用的代码提取：

import firebase_admin
from firebase_admin import auth
from firebase_admin import credentials

cred = credentials.Certificate("custom/conf/conf.json")
default_app = firebase_admin.initialize_app(cred)

user_uid = '901234753'
user = auth.get_user(user_uid)
print 'Successfully fetched user data: {0}'.format(user.uid)

有什么线索可能导致此错误以及如何解决？

更新1：

按照@Mihail Russu的评论

在app.yaml中添加SSL

- name: ssl
version: latest

生成了一个新错误：ImportError: cannot import name RAND_egd

排队：

from _ssl import RAND_add, RAND_egd, RAND_status, SSL_ERROR_ZERO_RETURN, SSL_ERROR_WANT_READ, SSL_ERROR_WANT_WRITE,,SSL_ERROR_INVALID_ERROR_CODE

根据页面"ImportError: cannot import name RAND_egd "和页面"Fix RAND_egd import error in SDK..."，我编辑了位于/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine的socket.py（在Mac上）以匹配他们的建议：

from _ssl import \
    RAND_add, \
    RAND_status, \
    SSL_ERROR_ZERO_RETURN, \
    SSL_ERROR_WANT_READ, \
    SSL_ERROR_WANT_WRITE, \
    SSL_ERROR_WANT_X509_LOOKUP, \
    SSL_ERROR_SYSCALL, \
    SSL_ERROR_SSL, \
    SSL_ERROR_WANT_CONNECT, \
    SSL_ERROR_EOF, \
    SSL_ERROR_INVALID_ERROR_CODE
try:
    from _ssl import RAND_egd
except ImportError:
    # LibreSSL does not provide RAND_egd
    pass

更新1结果：

生成新错误：

- ＆GT;本地开发服务器：('Connection aborted.', error(13, 'Permission denied'))

- ＆GT; GAE：('Connection broken: IncompleteRead(100 bytes read)', IncompleteRead(100 bytes read))

任何人都使用GAE成功实施了Firebase Auth？这感觉有点像走下兔子洞，想到使用SDK会像firebase auth的javascript版本一样简单。

Answer 1

如果您使用的是AppEngine标准环境，请确保app.yaml中包含以下内容：

libraries:
- name: ssl
  version: latest

App Engine通过SSL库支持Python 2.7运行时的本机Python SSL库，必须添加到您的应用。

在https://cloud.google.com/appengine/docs/standard/python/sockets/ssl_support

了解详情

Answer 2

更新2＆amp;分辨率

发现更新1 导致的错误：

提到的页面TransportError when running within App Engine 针对相同错误('Connection aborted.', error(13, 'Permission denied'))。
的解决方法
这是stack overflow answer 错误('Connection broken: IncompleteRead(80 bytes read)', IncompleteRead(80 bytes read))也会在稍后出现。

Mihail和上述网页的回答终于使用firebase auth来获取用户表单Firebase Auth用户

作为参考，最终的代码片段是：

app.yaml：

- name: ssl version: latest

appengine_config.py:

# appengine_config.py import os import google import imp import inspect from google.appengine.ext import vendor # Add any libraries install in the "lib" folder. vendor.add('lib') # whitelists the socket and ssl libraries for the dev app server, and uses the system-level socket library instead of the one packaged with the App Engine SDK. Your mileage may vary. if os.environ.get('SERVER_SOFTWARE', '').startswith('Development'): from google.appengine.tools.devappserver2.python import sandbox sandbox._WHITE_LIST_C_MODULES += ['_ssl', '_socket'] runtime_path = os.path.realpath(inspect.getsourcefile(inspect)) runtime_dir = os.path.dirname(runtime_path) # Patch and reload the socket module implementation. system_socket = os.path.join(runtime_dir, 'socket.py') imp.load_source('socket', system_socket) # Patch and reload the ssl module implementation. system_ssl = os.path.join(runtime_dir, 'ssl.py') imp.load_source('ssl', system_ssl)

socket.py：

from _ssl import \ RAND_add, \ RAND_status, \ SSL_ERROR_ZERO_RETURN, \ SSL_ERROR_WANT_READ, \ SSL_ERROR_WANT_WRITE, \ SSL_ERROR_WANT_X509_LOOKUP, \ SSL_ERROR_SYSCALL, \ SSL_ERROR_SSL, \ SSL_ERROR_WANT_CONNECT, \ SSL_ERROR_EOF, \ SSL_ERROR_INVALID_ERROR_CODE try: from _ssl import RAND_egd except ImportError: # LibreSSL does not provide RAND_egd pass

代码：

# firebase import firebase_admin from firebase_admin import auth from firebase_admin import credentials # handle requests for GAE import requests import requests_toolbelt.adapters.appengine requests_toolbelt.adapters.appengine.monkeypatch() # initialize firebase cred = credentials.Certificate("custom/conf/conf.json") default_app = firebase_admin.initialize_app(cred) user_uid = '901234753' user = auth.get_user(user_uid) print 'Successfully fetched user data: {0}'.format(user.uid)

虽然我需要稍后退房，但我确实收到了一些警告：

AppEnginePlatformWarning: urllib3 is using URLFetch on Google App Engine sandbox instead of sockets. To use sockets directly instead of URLFetch see https://urllib3.readthedocs.io/en/latest/reference/urllib3.contrib.html.AppEnginePlatformWarning) WARNING 2018-03-26 00:33:31,894 urlfetch_stub.py:534] Stripped prohibited headers from URLFetch request: ['Content-Length'] WARNING 2018-03-26 00:33:33,079 urlfetch_stub.py:534] Stripped prohibited headers from URLFetch request: ['Content-Length']

从AppEngine应用程序

2 个答案: