How to resolve SuspiciousOperation: Invalid HTTP_HOST header error?

Question

I was trying to deploy my django app on pythonanywhere .

Traceback from apache error log:

2013-07-23 09:31:35,058 :Internal Server Error: /favicon.ico
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 89, in get_response
    response = middleware_method(request)
  File "/usr/local/lib/python2.7/dist-packages/django/middleware/common.py", line 55, in process_request
    host = request.get_host()
  File "/usr/local/lib/python2.7/dist-packages/django/http/__init__.py", line 179, in get_host
    "Invalid HTTP_HOST header (you may need to set ALLOWED_HOSTS): %s" % host)
SuspiciousOperation: Invalid HTTP_HOST header (you may need to set ALLOWED_HOSTS): monty_singh.pythonanywhere.com

I tried ['*'] and ['monty_singh.pythonanywhere.com'] as values for ALLOWED_HOSTS but the app is still not working. No matter what value I set for ALLOWED_HOSTS I get the same error.

Answer 1

When Django validates the host from the HTTP request it attempts to match it against the following regex which you can find in the source here :

host_validation_re = re.compile(r"^([a-z0-9.-]+|\[[a-f0-9]*:[a-f0-9:]+\])(:\d+)?$")

The underscore in your username is causing Django to reject the host name on the request. You can create a new PythonAnywhere account with a new username or use a different web framework.

Answer 2

从您的 pyhonanywhere 主页转到文件并删除“缓存”（如果有），然后在项目文件夹中找到 settings.py 文件，添加星号或似乎不允许的链接：ALLOWED_HOSTS = ['*'] 然后返回仪表板>>web 并按“重新加载”按钮，然后单击顶部的“重新加载”按钮。