update_index results in "DisallowedHost: Invalid HTTP_HOST header: '*'"

[Krischtopp]

I have a context processor that calls request.get_host() in my project. Calling the update_index management command results in the following exception:

django.core.exceptions.DisallowedHost: Invalid HTTP_HOST header: '*'. The domain name provided is not valid according to RFC 1034/1035.
[ERROR/MainProcess] Error updating cms using default 
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/haystack/management/commands/update_index.py", line 230, in handle
    self.update_backend(label, using)
  File "/usr/local/lib/python3.7/site-packages/haystack/management/commands/update_index.py", line 276, in update_backend
    last_max_pk=max_pk)
  File "/usr/local/lib/python3.7/site-packages/haystack/management/commands/update_index.py", line 97, in do_update
    backend.update(index, current_qs, commit=commit)
  File "/usr/local/lib/python3.7/site-packages/haystack/backends/elasticsearch_backend.py", line 168, in update
    prepped_data = index.full_prepare(obj)
  File "/usr/local/lib/python3.7/site-packages/haystack/indexes.py", line 208, in full_prepare
    self.prepared_data = self.prepare(obj)
  File "/usr/local/lib/python3.7/site-packages/aldryn_search/base.py", line 45, in prepare
    self.prepared_data['text'] = self.get_search_data(obj, current_language, request)
  File "/usr/local/lib/python3.7/site-packages/aldryn_search/search_indexes.py", line 118, in get_search_data
    plugin_text_content = self.get_plugin_search_text(base_plugin, request)
  File "/usr/local/lib/python3.7/site-packages/aldryn_search/search_indexes.py", line 134, in get_plugin_search_text
    plugin_content_bits = get_plugin_index_data(base_plugin, request)
  File "/usr/local/lib/python3.7/site-packages/aldryn_search/helpers.py", line 79, in get_plugin_index_data
    updates.update(processor(context.request))
  File "/app/context_processors.py", line 11, in host
    return {"host": request.get_host()}
  File "/usr/local/lib/python3.7/site-packages/django/http/request.py", line 111, in get_host
    raise DisallowedHost(msg)

What is the * doing in there? I can't find anything in the configuration to change this.

[DmytroLitvinov]

We faced the same issue recently.

UPD: In my case I got it locally when I had ALLOWED_HOSTS = ['*'].
So there is a next code in the source:

def get_request(language=None):
    """
    Returns a Request instance populated with cms specific attributes.
    """
    request_factory = RequestFactory(HTTP_HOST=settings.ALLOWED_HOSTS[0])
    request = request_factory.get("/")
    request.session = {}
    request.LANGUAGE_CODE = language or settings.LANGUAGE_CODE
    # Needed for plugin rendering.
    request.current_page = None
    request.user = AnonymousUser()
    request.toolbar = CMSToolbar(request)
    return request

In my case it took first item from ALLOWED_HOSTS which is '*'