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butterrobot/app.py

@@ -11,29 +11,13 @@ from butterrobot.queue import q
 from butterrobot.db import ChannelQuery
 from butterrobot.config import SECRET_KEY, HOSTNAME
 from butterrobot.objects import Message, Channel
+from butterrobot.http import ExternalProxyFix
 from butterrobot.plugins import get_available_plugins
 from butterrobot.platforms import PLATFORMS, get_available_platforms
 from butterrobot.platforms.base import Platform
 from butterrobot.admin.blueprint import admin as admin_bp
 
 
-class ExternalProxyFix(object):
-    """
-    Custom proxy helper to get the external hostname from the `X-External-Host` header
-    used by one of the reverse proxies in front of this in production.
-    It does nothing if the header is not present.
-    """
-
-    def __init__(self, app):
-        self.app = app
-
-    def __call__(self, environ, start_response):
-        host = environ.get("HTTP_X_EXTERNAL_HOST", "")
-        if host:
-            environ["HTTP_HOST"] = host
-        return self.app(environ, start_response)
-
-
 loop = asyncio.get_event_loop()
 logger = structlog.get_logger(__name__)
 app = Flask(__name__)