fix(smartproxy): Improve error handling in forwarding connection handler and refine domain matching logic

test/test.route-callback-simple.ts

@@ -32,20 +32,21 @@ tap.test('should set update routes callback on certificate manager', async () =>
   
   // Mock createCertificateManager to track callback setting
   let callbackSet = false;
-  const originalCreate = (proxy as any).createCertificateManager;
   
   (proxy as any).createCertificateManager = async function(...args: any[]) {
-    // Create the actual certificate manager
-    const certManager = await originalCreate.apply(this, args);
-    
-    // Track if setUpdateRoutesCallback was called
-    const originalSet = certManager.setUpdateRoutesCallback;
-    certManager.setUpdateRoutesCallback = function(callback: any) {
-      callbackSet = true;
-      return originalSet.call(this, callback);
+    // Create a mock certificate manager
+    const mockCertManager = {
+      setUpdateRoutesCallback: function(callback: any) {
+        callbackSet = true;
+      },
+      setHttpProxy: function() {},
+      setGlobalAcmeDefaults: function() {},
+      setAcmeStateManager: function() {},
+      initialize: async function() {},
+      stop: async function() {}
     };
     
-    return certManager;
+    return mockCertManager;
   };
   
   await proxy.start();