Fix localhost readiness checks for IPv6-only servers

cursoragent · cursoragent · commit 6b15e776c8e7 · 2026-03-29T01:29:22.000Z
diff --git a/react_on_rails/lib/react_on_rails/dev/server_manager.rb b/react_on_rails/lib/react_on_rails/dev/server_manager.rb
@@ -896,17 +896,6 @@ def browser_auto_open_allowed?
           !ENV.key?("CI") && $stdin.tty? && $stdout.tty?
         end
 
-        def wait_for_server_on_port(port)
-          deadline = Process.clock_gettime(Process::CLOCK_MONOTONIC) + OPEN_BROWSER_WAIT_TIMEOUT
-
-          loop do
-            return true if localhost_port_open?(port)
-            return false if Process.clock_gettime(Process::CLOCK_MONOTONIC) >= deadline
-
-            sleep OPEN_BROWSER_POLL_INTERVAL
-          end
-        end
-
         def wait_for_app_route(port, request_path)
           deadline = Process.clock_gettime(Process::CLOCK_MONOTONIC) + OPEN_BROWSER_WAIT_TIMEOUT
 
@@ -926,10 +915,16 @@ def app_route_ready?(port, request_path)
         end
 
         def http_get_localhost(port, request_path)
-          Net::HTTP.start("127.0.0.1", port, open_timeout: 1, read_timeout: 1) do |http|
-            http.get(request_path)
+          %w[127.0.0.1 ::1].each do |host|
+            response = Net::HTTP.start(host, port, open_timeout: 1, read_timeout: 1) do |http|
+              http.get(request_path)
+            end
+
+            return response
+          rescue StandardError
+            next
           end
-        rescue StandardError
+
           nil
         end
 
