From 46b4c970d160816e91e933a3f6af402b1812e86a Mon Sep 17 00:00:00 2001
From: Stefan Agner <stefan@agner.ch>
Date: Sun, 3 Oct 2021 22:21:45 +0200
Subject: [PATCH] Fix socket abstraction for ESP-IDF v4 (#2434)

---
 esphome/components/socket/bsd_sockets_impl.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/esphome/components/socket/bsd_sockets_impl.cpp b/esphome/components/socket/bsd_sockets_impl.cpp
index aca15f118e..dcf4ea1f4e 100644
--- a/esphome/components/socket/bsd_sockets_impl.cpp
+++ b/esphome/components/socket/bsd_sockets_impl.cpp
@@ -96,6 +96,9 @@ class BSDSocketImpl : public Socket {
         break;
     }
     return ret;
+#elif defined(ARDUINO_ARCH_ESP32)
+    // ESP-IDF v4 only has symbol lwip_readv
+    return ::lwip_readv(fd_, iov, iovcnt);
 #else
     return ::readv(fd_, iov, iovcnt);
 #endif
@@ -120,6 +123,9 @@ class BSDSocketImpl : public Socket {
         break;
     }
     return ret;
+#elif defined(ARDUINO_ARCH_ESP32)
+    // ESP-IDF v4 only has symbol lwip_writev
+    return ::lwip_writev(fd_, iov, iovcnt);
 #else
     return ::writev(fd_, iov, iovcnt);
 #endif