Fixes #45

app/MindWork AI Studio/wwwroot/boot.js

@@ -0,0 +1,66 @@
+(() => {
+    const maximumRetryCount = 3;
+    const retryIntervalMilliseconds = 500;
+    const reconnectModal = document.getElementById('reconnect-modal');
+
+    const startReconnectionProcess = () => {
+        reconnectModal.style.display = 'block';
+
+        let isCanceled = false;
+
+        (async () => {
+            for (let i = 0; i < maximumRetryCount; i++) {
+                reconnectModal.innerText = `Attempting to reconnect: ${i + 1} of ${maximumRetryCount}`;
+
+                await new Promise(resolve => setTimeout(resolve, retryIntervalMilliseconds));
+
+                if (isCanceled) {
+                    return;
+                }
+
+                try {
+                    const result = await Blazor.reconnect();
+                    if (!result) {
+                        // The server was reached, but the connection was rejected; reload the page.
+                        location.reload();
+                        return;
+                    }
+
+                    // Successfully reconnected to the server.
+                    return;
+                } catch {
+                    // Didn't reach the server; try again.
+                }
+            }
+
+            // Retried too many times; reload the page.
+            location.reload();
+        })();
+
+        return {
+            cancel: () => {
+                isCanceled = true;
+                reconnectModal.style.display = 'none';
+            },
+        };
+    };
+
+    let currentReconnectionProcess = null;
+
+    Blazor.start({
+        circuit: {
+            reconnectionHandler: {
+                onConnectionDown: () => currentReconnectionProcess ??= startReconnectionProcess(),
+                onConnectionUp: () => {
+                    currentReconnectionProcess?.cancel();
+                    currentReconnectionProcess = null;
+                }
+            },
+
+            configureSignalR: function (builder) {
+                builder.withServerTimeout(1_200_000);
+                builder.withKeepAliveInterval(30_000);
+            },
+        }
+    });
+})();