We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Missing pyOpenSSL Dependency
Thanks for stopping by to let us know something could be better!

**PLEASE READ**: If you have a support contract with Google, please create an issue in the [support console](https://cloud.google.com/support/) instead of filing on GitHub. This will ensure a timely response.

Please run down the following list and make sure you've tried the usual "quick fixes":

  - Search the issues already opened: https://github.com/googleapis/google-auth-library-python/issues

If you are still having issues, please be sure to include as much information as possible:

#### Environment details

  - OS:
  - Python version:
  - pip version:
  - `google-auth` version:

#### Steps to reproduce

  1. Missing pyOpenSSL dependency in setup.py

For the tests there is a requirement in https://github.com/googleapis/google-auth-library-python/blob/master/noxfile.py against pyOpenSSL. But there are imports for pyOpenSSL in multiple modules in the code. Should pyOpenSSL be added to the requirements in setup.py?

I created https://github.com/googleapis/google-auth-library-python/pull/550 with the proposal but wanted to get feedback from an issue first as I don't see this showing up in previous issues or pull requests.

Making sure to follow these steps will guarantee the quickest resolution possible.

Thanks!


--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `setup.py`
Content:
```
1 # Copyright 2014 Google Inc.
2 #
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
6 #
7 #      http://www.apache.org/licenses/LICENSE-2.0
8 #
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
14 
15 import io
16 
17 from setuptools import find_packages
18 from setuptools import setup
19 
20 
21 DEPENDENCIES = (
22     "cachetools>=2.0.0,<5.0",
23     "pyasn1-modules>=0.2.1",
24     # rsa==4.5 is the last version to support 2.7
25     # https://github.com/sybrenstuvel/python-rsa/issues/152#issuecomment-643470233
26     'rsa<4.6; python_version < "3.6"',
27     'rsa>=3.1.4,<5; python_version >= "3.6"',
28     "setuptools>=40.3.0",
29     "six>=1.9.0",
30 )
31 
32 extras = {"aiohttp": "aiohttp >= 3.6.2, < 4.0.0dev; python_version>='3.6'"}
33 
34 with io.open("README.rst", "r") as fh:
35     long_description = fh.read()
36 
37 version = "1.26.1"
38 
39 setup(
40     name="google-auth",
41     version=version,
42     author="Google Cloud Platform",
43     author_email="googleapis-packages@google.com",
44     description="Google Authentication Library",
45     long_description=long_description,
46     url="https://github.com/googleapis/google-auth-library-python",
47     packages=find_packages(exclude=("tests*", "system_tests*")),
48     namespace_packages=("google",),
49     install_requires=DEPENDENCIES,
50     extras_require=extras,
51     python_requires=">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*",
52     license="Apache 2.0",
53     keywords="google auth oauth client",
54     classifiers=[
55         "Programming Language :: Python :: 2",
56         "Programming Language :: Python :: 2.7",
57         "Programming Language :: Python :: 3",
58         "Programming Language :: Python :: 3.6",
59         "Programming Language :: Python :: 3.7",
60         "Programming Language :: Python :: 3.8",
61         "Programming Language :: Python :: 3.9",
62         "Development Status :: 5 - Production/Stable",
63         "Intended Audience :: Developers",
64         "License :: OSI Approved :: Apache Software License",
65         "Operating System :: POSIX",
66         "Operating System :: Microsoft :: Windows",
67         "Operating System :: MacOS :: MacOS X",
68         "Operating System :: OS Independent",
69         "Topic :: Internet :: WWW/HTTP",
70     ],
71 )
72
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/setup.py b/setup.py
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,10 @@
     "six>=1.9.0",
 )
 
-extras = {"aiohttp": "aiohttp >= 3.6.2, < 4.0.0dev; python_version>='3.6'"}
+extras = {
+    "aiohttp": "aiohttp >= 3.6.2, < 4.0.0dev; python_version>='3.6'",
+    "pyopenssl": "pyopenssl>=20.0.0",
+}
 
 with io.open("README.rst", "r") as fh:
     long_description = fh.read()

{"golden_diff": "diff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -29,7 +29,10 @@\n     \"six>=1.9.0\",\n )\n \n-extras = {\"aiohttp\": \"aiohttp >= 3.6.2, < 4.0.0dev; python_version>='3.6'\"}\n+extras = {\n+    \"aiohttp\": \"aiohttp >= 3.6.2, < 4.0.0dev; python_version>='3.6'\",\n+    \"pyopenssl\": \"pyopenssl>=20.0.0\",\n+}\n \n with io.open(\"README.rst\", \"r\") as fh:\n     long_description = fh.read()\n", "issue": "Missing pyOpenSSL Dependency\nThanks for stopping by to let us know something could be better!\r\n\r\n**PLEASE READ**: If you have a support contract with Google, please create an issue in the [support console](https://cloud.google.com/support/) instead of filing on GitHub. This will ensure a timely response.\r\n\r\nPlease run down the following list and make sure you've tried the usual \"quick fixes\":\r\n\r\n  - Search the issues already opened: https://github.com/googleapis/google-auth-library-python/issues\r\n\r\nIf you are still having issues, please be sure to include as much information as possible:\r\n\r\n#### Environment details\r\n\r\n  - OS:\r\n  - Python version:\r\n  - pip version:\r\n  - `google-auth` version:\r\n\r\n#### Steps to reproduce\r\n\r\n  1. Missing pyOpenSSL dependency in setup.py\r\n\r\nFor the tests there is a requirement in https://github.com/googleapis/google-auth-library-python/blob/master/noxfile.py against pyOpenSSL. But there are imports for pyOpenSSL in multiple modules in the code. Should pyOpenSSL be added to the requirements in setup.py?\r\n\r\nI created https://github.com/googleapis/google-auth-library-python/pull/550 with the proposal but wanted to get feedback from an issue first as I don't see this showing up in previous issues or pull requests.\r\n\r\nMaking sure to follow these steps will guarantee the quickest resolution possible.\r\n\r\nThanks!\r\n\n", "before_files": [{"content": "# Copyright 2014 Google Inc.\n#\n# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n#\n#      http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n\nimport io\n\nfrom setuptools import find_packages\nfrom setuptools import setup\n\n\nDEPENDENCIES = (\n    \"cachetools>=2.0.0,<5.0\",\n    \"pyasn1-modules>=0.2.1\",\n    # rsa==4.5 is the last version to support 2.7\n    # https://github.com/sybrenstuvel/python-rsa/issues/152#issuecomment-643470233\n    'rsa<4.6; python_version < \"3.6\"',\n    'rsa>=3.1.4,<5; python_version >= \"3.6\"',\n    \"setuptools>=40.3.0\",\n    \"six>=1.9.0\",\n)\n\nextras = {\"aiohttp\": \"aiohttp >= 3.6.2, < 4.0.0dev; python_version>='3.6'\"}\n\nwith io.open(\"README.rst\", \"r\") as fh:\n    long_description = fh.read()\n\nversion = \"1.26.1\"\n\nsetup(\n    name=\"google-auth\",\n    version=version,\n    author=\"Google Cloud Platform\",\n    author_email=\"googleapis-packages@google.com\",\n    description=\"Google Authentication Library\",\n    long_description=long_description,\n    url=\"https://github.com/googleapis/google-auth-library-python\",\n    packages=find_packages(exclude=(\"tests*\", \"system_tests*\")),\n    namespace_packages=(\"google\",),\n    install_requires=DEPENDENCIES,\n    extras_require=extras,\n    python_requires=\">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*\",\n    license=\"Apache 2.0\",\n    keywords=\"google auth oauth client\",\n    classifiers=[\n        \"Programming Language :: Python :: 2\",\n        \"Programming Language :: Python :: 2.7\",\n        \"Programming Language :: Python :: 3\",\n        \"Programming Language :: Python :: 3.6\",\n        \"Programming Language :: Python :: 3.7\",\n        \"Programming Language :: Python :: 3.8\",\n        \"Programming Language :: Python :: 3.9\",\n        \"Development Status :: 5 - Production/Stable\",\n        \"Intended Audience :: Developers\",\n        \"License :: OSI Approved :: Apache Software License\",\n        \"Operating System :: POSIX\",\n        \"Operating System :: Microsoft :: Windows\",\n        \"Operating System :: MacOS :: MacOS X\",\n        \"Operating System :: OS Independent\",\n        \"Topic :: Internet :: WWW/HTTP\",\n    ],\n)\n", "path": "setup.py"}], "after_files": [{"content": "# Copyright 2014 Google Inc.\n#\n# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n#\n#      http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n\nimport io\n\nfrom setuptools import find_packages\nfrom setuptools import setup\n\n\nDEPENDENCIES = (\n    \"cachetools>=2.0.0,<5.0\",\n    \"pyasn1-modules>=0.2.1\",\n    # rsa==4.5 is the last version to support 2.7\n    # https://github.com/sybrenstuvel/python-rsa/issues/152#issuecomment-643470233\n    'rsa<4.6; python_version < \"3.6\"',\n    'rsa>=3.1.4,<5; python_version >= \"3.6\"',\n    \"setuptools>=40.3.0\",\n    \"six>=1.9.0\",\n)\n\nextras = {\n    \"aiohttp\": \"aiohttp >= 3.6.2, < 4.0.0dev; python_version>='3.6'\",\n    \"pyopenssl\": \"pyopenssl>=20.0.0\",\n}\n\nwith io.open(\"README.rst\", \"r\") as fh:\n    long_description = fh.read()\n\nversion = \"1.26.1\"\n\nsetup(\n    name=\"google-auth\",\n    version=version,\n    author=\"Google Cloud Platform\",\n    author_email=\"googleapis-packages@google.com\",\n    description=\"Google Authentication Library\",\n    long_description=long_description,\n    url=\"https://github.com/googleapis/google-auth-library-python\",\n    packages=find_packages(exclude=(\"tests*\", \"system_tests*\")),\n    namespace_packages=(\"google\",),\n    install_requires=DEPENDENCIES,\n    extras_require=extras,\n    python_requires=\">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*\",\n    license=\"Apache 2.0\",\n    keywords=\"google auth oauth client\",\n    classifiers=[\n        \"Programming Language :: Python :: 2\",\n        \"Programming Language :: Python :: 2.7\",\n        \"Programming Language :: Python :: 3\",\n        \"Programming Language :: Python :: 3.6\",\n        \"Programming Language :: Python :: 3.7\",\n        \"Programming Language :: Python :: 3.8\",\n        \"Programming Language :: Python :: 3.9\",\n        \"Development Status :: 5 - Production/Stable\",\n        \"Intended Audience :: Developers\",\n        \"License :: OSI Approved :: Apache Software License\",\n        \"Operating System :: POSIX\",\n        \"Operating System :: Microsoft :: Windows\",\n        \"Operating System :: MacOS :: MacOS X\",\n        \"Operating System :: OS Independent\",\n        \"Topic :: Internet :: WWW/HTTP\",\n    ],\n)\n", "path": "setup.py"}]}