aiohttp 2.3.1 dependency

gns3server/controller/compute.py

@@ -506,10 +506,16 @@ class Compute:
                 else:
                     data = json.dumps(data).encode("utf-8")
         try:
+            log.debug("Attempting request to compute: {method} {url} {headers}".format(
+                method=method,
+                url=url,
+                headers=headers
+            ))
             response = yield from self._session().request(method, url, headers=headers, data=data, auth=self._auth, chunked=chunked, timeout=timeout)
         except asyncio.TimeoutError as e:
             raise ComputeError("Timeout error when connecting to {}".format(url))
-        except (aiohttp.ClientError, aiohttp.ServerDisconnectedError, ValueError, KeyError) as e:
+        except (aiohttp.ClientError, aiohttp.ServerDisconnectedError, ValueError, KeyError, socket.gaierror) as e:
+            #  aiohttp 2.3.1 raises socket.gaierror when cannot find host
             raise ComputeError(str(e))
         body = yield from response.read()
         if body and not raw:

gns3server/web/web_server.py

@@ -43,8 +43,8 @@ import gns3server.handlers
 import logging
 log = logging.getLogger(__name__)
 
-if not aiohttp.__version__.startswith("2.2"):
-    raise RuntimeError("aiohttp 2.2 is required to run the GNS3 server")
+if not (aiohttp.__version__.startswith("2.2") or aiohttp.__version__.startswith("2.3")):
+    raise RuntimeError("aiohttp 2.2.x or 2.3.x is required to run the GNS3 server")
 
 
 class WebServer:
@@ -102,7 +102,12 @@ class WebServer:
         if self._app:
             yield from self._app.shutdown()
         if self._handler:
-            yield from self._handler.finish_connections(2)  # Parameter is timeout
+            try:
+                # aiohttp < 2.3
+                yield from self._handler.finish_connections(2)  # Parameter is timeout
+            except AttributeError:
+                # aiohttp >= 2.3
+                yield from self._handler.shutdown(2)  # Parameter is timeout
         if self._app:
             yield from self._app.cleanup()