Return the current controller hostname/IP from any compute

gns3server/api/routes/compute/__init__.py

@@ -56,6 +56,8 @@ compute_api = FastAPI(
     version="v3",
 )
 
+compute_api.state.controller_host = None
+
 
 @compute_api.exception_handler(ComputeError)
 async def controller_error_handler(request: Request, exc: ComputeError):

gns3server/api/routes/compute/capabilities.py

@@ -21,7 +21,7 @@ API routes for capabilities
 import sys
 import psutil
 
-from fastapi import APIRouter
+from fastapi import APIRouter, Request
 
 from gns3server.version import __version__
 from gns3server.compute import MODULES
@@ -32,12 +32,15 @@ router = APIRouter()
 
 
 @router.get("/capabilities", response_model=schemas.Capabilities)
-def get_capabilities() -> dict:
+def get_capabilities(request: Request) -> dict:
 
     node_types = []
     for module in MODULES:
         node_types.extend(module.node_types())
 
+    # record the controller hostname or IP address
+    request.app.state.controller_host = request.client.host
+
     return {
         "version": __version__,
         "platform": sys.platform,