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

ts/proxies/smart-proxy/route-manager.ts

@@ -338,10 +338,19 @@ export class RouteManager extends plugins.EventEmitter {
     
     // Find the first matching route based on priority order
     for (const route of routesForPort) {
-      // Check domain match if specified
-      if (domain && !this.matchRouteDomain(route, domain)) {
-        continue;
+      // Check domain match
+      // If the route has domain restrictions and we have a domain to check
+      if (route.match.domains) {
+        // If no domain was provided (non-TLS or no SNI), this route doesn't match
+        if (!domain) {
+          continue;
+        }
+        // If domain is provided but doesn't match the route's domains, skip
+        if (!this.matchRouteDomain(route, domain)) {
+          continue;
+        }
       }
+      // If route has no domain restrictions, it matches all domains
       
       // Check path match if specified in both route and request
       if (path && route.match.path) {