Case insensitive query parameters

titiler/application/titiler/application/main.py

@@ -9,6 +9,7 @@
     CacheControlMiddleware,
     LoggerMiddleware,
     TotalTimeMiddleware,
+    CaseInsensitiveMiddleware
 )
 from titiler.application.routers import cog, mosaic, stac, tms
 from titiler.application.settings import ApiSettings
@@ -67,6 +68,8 @@
     exclude_path={r"/healthz"},
 )
 
+app.add_middleware(CaseInsensitiveMiddleware)
+
 if api_settings.debug:
     app.add_middleware(LoggerMiddleware, headers=True, querystrings=True)
     app.add_middleware(TotalTimeMiddleware)

titiler/application/titiler/application/middleware.py

@@ -88,3 +88,18 @@ async def dispatch(self, request: Request, call_next):
 
         response = await call_next(request)
         return response
+
+
+class CaseInsensitiveMiddleware(BaseHTTPMiddleware):
+    """Middleware to make URL parameters case-insensitive.
+    taken from: https://github.com/tiangolo/fastapi/issues/826
+    """
+
+    async def dispatch(self, request: Request, call_next):
+        self.DECODE_FORMAT = "latin-1"
+
+        raw = request.scope["query_string"].decode(self.DECODE_FORMAT).lower()
+        request.scope["query_string"] = raw.encode(self.DECODE_FORMAT)
+
+        response = await call_next(request)
+        return response