From f981f671f3d8d3e4b725abd097cce2992a9b8d79 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Tue, 27 May 2025 12:22:45 -0500
Subject: [PATCH] make sure we use lwip_select as its much faster

---
 esphome/core/application.cpp | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/esphome/core/application.cpp b/esphome/core/application.cpp
index 045eb807b5..b67a96eec7 100644
--- a/esphome/core/application.cpp
+++ b/esphome/core/application.cpp
@@ -10,7 +10,12 @@
 #if defined(FD_SETSIZE) && !defined(USE_SOCKET_IMPL_LWIP_TCP)
 #include <cerrno>
 #ifdef USE_ESP32
+// ESP32 with BSD sockets actually uses lwIP underneath
+#ifdef USE_SOCKET_IMPL_BSD_SOCKETS
+#include <lwip/sockets.h>
+#else
 #include <sys/select.h>
+#endif
 #elif defined(USE_ESP8266)
 #include <sys/time.h>
 #include <sys/types.h>
@@ -148,11 +153,14 @@ void Application::loop() {
       tv.tv_usec = (delay_time % 1000) * 1000;
 
       // Call select with timeout
-#if defined(USE_ESP8266) || defined(USE_SOCKET_IMPL_LWIP_SOCKETS)
+#if defined(USE_ESP8266) || defined(USE_SOCKET_IMPL_LWIP_SOCKETS) || \
+    (defined(USE_ESP32) && defined(USE_SOCKET_IMPL_BSD_SOCKETS))
       // Use lwip_select() on platforms with lwIP - it's faster
+      // Note: On ESP32 with BSD sockets, select() is already mapped to lwip_select() via macros,
+      // but we explicitly call lwip_select() for clarity and to ensure we get the optimized version
       int ret = lwip_select(this->max_fd_ + 1, &this->read_fds_, nullptr, nullptr, &tv);
 #else
-      // Use standard select() on other platforms
+      // Use standard select() on other platforms (e.g., host/native builds)
       int ret = ::select(this->max_fd_ + 1, &this->read_fds_, nullptr, nullptr, &tv);
 #endif