unhandled rejection improvements and isSessionEnd flag

1 files changed, 17 insertions, 3 deletions

diff --git a/src/client/DocServer.ts b/src/client/DocServer.ts
index ed7fbd7ba..1723312cf 100644
--- a/src/client/DocServer.ts
+++ b/src/client/DocServer.ts
@@ -64,6 +64,22 @@ export namespace DocServer {
         }
     }
 
+    function alertUser(connectionTerminationReason: string) {
+        switch (connectionTerminationReason) {
+            case "crash":
+                alert("Dash has temporarily crashed. Administrators have been notified and the server is restarting itself. Please refresh your page in a few seconds, and expect to reconnect after about 30 seconds.");
+                break;
+            case "temporary":
+                alert("An administrator has chosen to restart the server. Please refresh your page in a few seconds, and expect to reconnect after about 30 seconds.");
+                break;
+            case "exit":
+                alert("An administrator has chosen to kill the server. Do not expect to reconnect until administrators start the server.");
+                break;
+            default:
+                console.log(`Received an unknown ConnectionTerminated message: ${connectionTerminationReason}`);
+        }
+    }
+
     export function init(protocol: string, hostname: string, port: number, identifier: string) {
         _cache = {};
         GUID = identifier;
@@ -82,9 +98,7 @@ export namespace DocServer {
         Utils.AddServerHandler(_socket, MessageStore.UpdateField, respondToUpdate);
         Utils.AddServerHandler(_socket, MessageStore.DeleteField, respondToDelete);
         Utils.AddServerHandler(_socket, MessageStore.DeleteFields, respondToDelete);
-        Utils.AddServerHandler(_socket, MessageStore.ConnectionTerminated, () => {
-            alert("Your connection to the server has been terminated.");
-        });
+        Utils.AddServerHandler(_socket, MessageStore.ConnectionTerminated, alertUser);
     }
 
     function errorFunc(): never {