Add server timeout configuration and improve error handling for script save operations

- Configure HTTP server timeouts (requestTimeout: 5min, headersTimeout: 2min, keepAliveTimeout: 65s)
- Add better error logging in PUT /scripts endpoint
- Improve writeFileWithLock error handling with descriptive messages and proper cleanup
- Ensure lock is always released even on error

Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

back/api/script.ts

@@ -206,6 +206,7 @@ export default (app: Router) => {
       }),
     }),
     async (req: Request, res: Response, next: NextFunction) => {
+      const logger: Logger = Container.get('logger');
       try {
         let { filename, content, path } = req.body as {
           filename: string;
@@ -223,6 +224,7 @@ export default (app: Router) => {
         await writeFileWithLock(filePath, content);
         return res.send({ code: 200 });
       } catch (e) {
+        logger.error('🔥 error saving script: %o', e);
         return next(e);
       }
     },

back/services/http.ts

@@ -16,6 +16,17 @@ export class HttpServerService {
           metricsService.record('http_service_start', 1, {
             port: port.toString(),
           });
+          
+          // Set server timeouts to prevent premature connection drops
+          if (this.server) {
+            // Timeout for receiving the entire request (including body) - 5 minutes
+            this.server.requestTimeout = 300000;
+            // Timeout for headers - 2 minutes  
+            this.server.headersTimeout = 120000;
+            // Keep-alive timeout - 65 seconds (slightly more than typical load balancer timeout)
+            this.server.keepAliveTimeout = 65000;
+          }
+          
           resolve(this.server);
         });
 

back/shared/utils.ts

@@ -3,6 +3,7 @@ import os from 'os';
 import path from 'path';
 import { writeFile, open, chmod } from 'fs/promises';
 import { fileExist } from '../config/util';
+import Logger from '../loaders/logger';
 
 function getUniqueLockPath(filePath: string) {
   const sanitizedPath = filePath
@@ -19,13 +20,21 @@ export async function writeFileWithLock(
   if (typeof options === 'string') {
     options = { encoding: options };
   }
+  
+  try {
     if (!(await fileExist(filePath))) {
       const fileHandle = await open(filePath, 'w');
-    fileHandle.close();
+      await fileHandle.close();
+    }
+  } catch (error) {
+    throw new Error(`Failed to create file ${filePath}: ${error}`);
   }
-  const lockfilePath = getUniqueLockPath(filePath);
   
-  const release = await lock(filePath, {
+  const lockfilePath = getUniqueLockPath(filePath);
+  let release: (() => Promise<void>) | null = null;
+
+  try {
+    release = await lock(filePath, {
       retries: {
         retries: 10,
         factor: 2,
@@ -34,9 +43,25 @@ export async function writeFileWithLock(
       },
       lockfilePath,
     });
+  } catch (error) {
+    throw new Error(`Failed to acquire lock for ${filePath}: ${error}`);
+  }
+
+  try {
     await writeFile(filePath, content, { encoding: 'utf8', ...options });
     if (options?.mode) {
       await chmod(filePath, options.mode);
     }
+  } catch (error) {
+    throw new Error(`Failed to write to file ${filePath}: ${error}`);
+  } finally {
+    if (release) {
+      try {
         await release();
+      } catch (error) {
+        // Log but don't throw on release failure
+        Logger.error(`Failed to release lock for ${filePath}:`, error);
+      }
+    }
+  }
 }