Merge remote-tracking branch 'origin/dev' into socket-lwip-connect

docker/Dockerfile

@@ -22,7 +22,7 @@ RUN \
     -r /requirements.txt
 
 # Install the ESPHome Device Builder dashboard.
-RUN uv pip install --no-cache-dir esphome-device-builder==1.14.6
+RUN uv pip install --no-cache-dir esphome-device-builder==1.14.5
 
 RUN \
     platformio settings set enable_telemetry No \

esphome/components/async_tcp/async_tcp_socket.cpp

@@ -6,7 +6,6 @@
 #include "esphome/components/network/util.h"
 #include "esphome/core/log.h"
 #include <cerrno>
-#include <sys/select.h>
 
 namespace esphome::async_tcp {
 
@@ -42,7 +41,15 @@ bool AsyncClient::connect(const char *host, uint16_t port) {
     return false;
   }
 
-  socket_->setblocking(false);
+  if (socket_->setblocking(false) != 0) {
+    // Capture before the log and close() clobber errno
+    const int saved_errno = errno;
+    ESP_LOGE(TAG, "Failed to set nonblocking: errno %d", saved_errno);
+    close();
+    if (error_cb_)
+      error_cb_(error_arg_, this, saved_errno);
+    return false;
+  }
 
   int err = socket_->connect((struct sockaddr *) &addr, addrlen);
   if (err == 0) {
@@ -97,45 +104,22 @@ void AsyncClient::loop() {
     return;
 
   if (connecting_) {
-    // For connecting, we need to check writability, not readability
-    // The Application's select() only monitors read FDs, so we do our own check here
-    // For ESP platforms lwip_select() might be faster, but this code isn't used
-    // on those platforms anyway. If it was, we'd fix the Application select()
-    // to report writability instead of doing it this way.
-    int fd = socket_->get_fd();
-    if (fd < 0) {
-      ESP_LOGW(TAG, "Invalid socket fd");
-      close();
-      return;
-    }
-
-    fd_set writefds;
-    FD_ZERO(&writefds);
-    FD_SET(fd, &writefds);
-
-    struct timeval tv = {0, 0};
-    int ret = select(fd + 1, nullptr, &writefds, nullptr, &tv);
-
-    if (ret > 0 && FD_ISSET(fd, &writefds)) {
-      int error = 0;
-      socklen_t len = sizeof(error);
-      if (socket_->getsockopt(SOL_SOCKET, SO_ERROR, &error, &len) == 0 && error == 0) {
+    int err = 0;
+    switch (socket::poll_connect(*socket_, err)) {
+      case socket::ConnectPollResult::CONNECT_POLL_RESULT_PENDING:
+        break;
+      case socket::ConnectPollResult::CONNECT_POLL_RESULT_CONNECTED:
         connecting_ = false;
         connected_ = true;
         if (connect_cb_)
           connect_cb_(connect_arg_, this);
-      } else {
-        ESP_LOGW(TAG, "Connection failed: %d", error);
+        break;
+      case socket::ConnectPollResult::CONNECT_POLL_RESULT_ERROR:
+        ESP_LOGW(TAG, "Connection failed: %d", err);
         close();
         if (error_cb_)
-          error_cb_(error_arg_, this, error);
-      }
-    } else if (ret < 0) {
-      const int err = errno;
-      ESP_LOGE(TAG, "Select error: %d", err);
-      close();
-      if (error_cb_)
-        error_cb_(error_arg_, this, err);
+          error_cb_(error_arg_, this, err);
+        break;
     }
   } else if (connected_) {
     // For connected sockets, use the Application's select() results

esphome/components/es7210/es7210.cpp

@@ -153,14 +153,13 @@ bool ES7210::configure_mic_gain_() {
   ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_MIC2_GAIN_REG44, 0x0f, regv));
 
   // Configure mic 3
-  // MIC3 uses the ADC3/4 and MIC3/4 clock domains (bits 2 and 4), not the MIC1/2 domains.
-  ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_CLOCK_OFF_REG01, 0x15, 0x00));
+  ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_CLOCK_OFF_REG01, 0x0b, 0x00));
   ES7210_ERROR_CHECK(this->write_byte(ES7210_MIC34_POWER_REG4C, 0x00));
   ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_MIC3_GAIN_REG45, 0x10, 0x10));
   ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_MIC3_GAIN_REG45, 0x0f, regv));
 
   // Configure mic 4
-  ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_CLOCK_OFF_REG01, 0x15, 0x00));
+  ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_CLOCK_OFF_REG01, 0x0b, 0x00));
   ES7210_ERROR_CHECK(this->write_byte(ES7210_MIC34_POWER_REG4C, 0x00));
   ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_MIC4_GAIN_REG46, 0x10, 0x10));
   ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_MIC4_GAIN_REG46, 0x0f, regv));

esphome/components/esphome/ota/ota_esphome.cpp

@@ -447,7 +447,10 @@ void ESPHomeOTAComponent::handle_data_() {
   tv.tv_usec = 0;
   this->client_->setsockopt(SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
   this->client_->setsockopt(SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv));
-  this->client_->setblocking(true);
+  if (this->client_->setblocking(true) != 0) {
+    this->log_socket_error_(LOG_STR("blocking"));
+    goto error;  // NOLINT(cppcoreguidelines-avoid-goto)
+  }
 
   // Acknowledge auth OK - 1 byte
   this->data_write_byte_(ota::OTA_RESPONSE_AUTH_OK);

esphome/components/modbus_controller/modbus_controller.h

@@ -30,10 +30,53 @@ using modbus::ModbusFunctionCode;
 using modbus::ModbusRegisterType;
 #pragma GCC diagnostic pop
 
-// Span overloads of the former modbus_controller helpers: read lambdas receive their payload as a
+// Remove before 2026.10.0 — these helpers have moved to modbus::helpers
+ESPDEPRECATED("Use modbus::helpers::value_type_is_float() instead. Removed in 2026.10.0", "2026.4.0")
+inline bool value_type_is_float(SensorValueType v) { return modbus::helpers::value_type_is_float(v); }
+
+ESPDEPRECATED("Use modbus::helpers::modbus_register_read_function() instead. Removed in 2026.10.0", "2026.4.0")
+inline FunctionCode modbus_register_read_function(modbus::EntityType reg_type) {
+  return modbus::helpers::modbus_register_read_function(reg_type);
+}
+
+ESPDEPRECATED("Use modbus::helpers::modbus_register_write_function() instead. Removed in 2026.10.0", "2026.4.0")
+inline FunctionCode modbus_register_write_function(modbus::EntityType reg_type) {
+  return modbus::helpers::modbus_register_write_function(reg_type);
+}
+
+ESPDEPRECATED("Use modbus::helpers::c_to_hex() instead. Removed in 2026.10.0", "2026.4.0")
+inline uint8_t c_to_hex(char c) { return modbus::helpers::c_to_hex(c); }
+
+ESPDEPRECATED("Use modbus::helpers::byte_from_hex_str() instead. Removed in 2026.10.0", "2026.4.0")
+inline uint8_t byte_from_hex_str(const std::string &value, uint8_t pos) {
+  return modbus::helpers::byte_from_hex_str(value, pos);
+}
+
+ESPDEPRECATED("Use modbus::helpers::word_from_hex_str() instead. Removed in 2026.10.0", "2026.4.0")
+inline uint16_t word_from_hex_str(const std::string &value, uint8_t pos) {
+  return modbus::helpers::word_from_hex_str(value, pos);
+}
+
+ESPDEPRECATED("Use modbus::helpers::dword_from_hex_str() instead. Removed in 2026.10.0", "2026.4.0")
+inline uint32_t dword_from_hex_str(const std::string &value, uint8_t pos) {
+  return modbus::helpers::dword_from_hex_str(value, pos);
+}
+
+ESPDEPRECATED("Use modbus::helpers::qword_from_hex_str() instead. Removed in 2026.10.0", "2026.4.0")
+inline uint64_t qword_from_hex_str(const std::string &value, uint8_t pos) {
+  return modbus::helpers::qword_from_hex_str(value, pos);
+}
+
+template<typename T>
+ESPDEPRECATED("Use modbus::helpers::get_data() instead. Removed in 2026.10.0", "2026.4.0")
+T get_data(const std::vector<uint8_t> &data, size_t buffer_offset) {
+  return modbus::helpers::get_data<T>(data, buffer_offset);
+}
+
+// Span overloads of the deprecated helpers below: read lambdas receive their payload as a
 // std::span<const uint8_t> (previously a const std::vector<uint8_t> &), and a span does not convert to
 // a vector, so existing lambdas calling these by name need an overload that accepts one. These carry
-// the 2026.8.0 deprecation window, since the span forms only exist from it.
+// this release's deprecation window, since the span forms only exist from it.
 // payload_to_number() deliberately has no such overload: one of its arguments is a modbus::helpers
 // type, so a span call already reaches the helper by argument-dependent lookup, and a forwarder here
 // would only make that call ambiguous.
@@ -56,6 +99,33 @@ inline bool coil_from_vector(int coil, std::span<const uint8_t> data) {
   return modbus::helpers::bit_from_packed(coil, data);
 }
 
+template<typename N>
+ESPDEPRECATED("Use modbus::helpers::mask_and_shift_by_rightbit() instead. Removed in 2026.10.0", "2026.4.0")
+N mask_and_shift_by_rightbit(N data, uint32_t mask) {
+  return modbus::helpers::mask_and_shift_by_rightbit(data, mask);
+}
+
+ESPDEPRECATED("Use modbus::helpers::number_to_payload() instead. Removed in 2026.10.0", "2026.4.0")
+inline void number_to_payload(std::vector<uint16_t> &data, int64_t value, SensorValueType value_type) {
+  modbus::helpers::number_to_payload(data, value, value_type);
+}
+
+ESPDEPRECATED("Use modbus::helpers::payload_to_number() instead. Removed in 2026.10.0", "2026.4.0")
+inline int64_t payload_to_number(const std::vector<uint8_t> &data, SensorValueType sensor_value_type, uint8_t offset,
+                                 uint32_t bitmask) {
+  return modbus::helpers::payload_to_number(std::span<const uint8_t>(data), sensor_value_type, offset, bitmask)
+      .value_or(0);
+}
+
+ESPDEPRECATED("Use modbus::helpers::float_to_payload() instead. Removed in 2026.10.0", "2026.4.0")
+inline std::vector<uint16_t> float_to_payload(float value, SensorValueType value_type) {
+  std::vector<uint16_t> data;
+  modbus::helpers::float_to_payload(data, value, value_type);
+  return data;
+}
+
+class ModbusController;
+
 /// How an item relates to the register range built just before it (same register type, address order).
 /// The numeric order doubles as the comparator tiebreak for items at the same address (see
 /// SensorItemsComparator): AUTO items form the shared range first, so a NEVER item comes last and

esphome/components/sendspin/__init__.py

@@ -6,17 +6,12 @@ from esphome.components import esp32, network, psram, socket, wifi
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_BUFFER_SIZE,
-    CONF_ESPHOME,
     CONF_FORMAT,
     CONF_HEIGHT,
     CONF_ID,
-    CONF_MODEL,
-    CONF_NAME,
-    CONF_PROJECT,
     CONF_SAMPLE_RATE,
     CONF_SOURCE,
     CONF_TASK_STACK_IN_PSRAM,
-    CONF_VERSION,
     CONF_WIDTH,
 )
 from esphome.core import CORE, ID
@@ -32,14 +27,6 @@ DOMAIN = "sendspin"
 CONF_DISPLAY_OFFSET = "display_offset"
 CONF_SENDSPIN_ID = "sendspin_id"
 
-CONF_FIRMWARE_VERSION = "firmware_version"
-CONF_MANUFACTURER = "manufacturer"
-
-# An empty device information string would be sent to the server as an empty value rather than
-# falling back, so reject it instead of silently substituting the fallback. The 127 byte cap keeps
-# the length prefix of a protobuf string field to a single byte, matching `esphome: project:`.
-DEVICE_INFO_STRING = cv.All(cv.string_strict, cv.Length(min=1), cv.ByteLength(max=127))
-
 CONF_INITIAL_STATIC_DELAY = "initial_static_delay"
 CONF_FIXED_DELAY = "fixed_delay"
 CONF_DECODE_MEMORY = "decode_memory"
@@ -211,9 +198,6 @@ CONFIG_SCHEMA = cv.All(
         {
             cv.GenerateID(): cv.declare_id(SendspinHub),
             cv.Optional(CONF_TASK_STACK_IN_PSRAM): psram.validate_task_stack_in_psram,
-            cv.Optional(CONF_MANUFACTURER): DEVICE_INFO_STRING,
-            cv.Optional(CONF_MODEL): DEVICE_INFO_STRING,
-            cv.Optional(CONF_FIRMWARE_VERSION): DEVICE_INFO_STRING,
         }
     ),
     cv.only_on_esp32,
@@ -264,22 +248,6 @@ async def to_code(config: ConfigType) -> None:
         cg.add(var.set_task_stack_in_psram(True))
         psram.request_external_task_stack()
 
-    # Device information for the server's client/hello message. Falls back to the project
-    # information, which is written as `manufacturer.model`. Anything still unset keeps the
-    # default the hub itself applies: the ESPHome name and version.
-    project = CORE.config[CONF_ESPHOME].get(CONF_PROJECT, {})
-    project_manufacturer, _, project_model = project.get(CONF_NAME, "").partition(".")
-    for value, setter in (
-        (config.get(CONF_MANUFACTURER) or project_manufacturer, var.set_manufacturer),
-        (config.get(CONF_MODEL) or project_model, var.set_model),
-        (
-            config.get(CONF_FIRMWARE_VERSION) or project.get(CONF_VERSION),
-            var.set_firmware_version,
-        ),
-    ):
-        if value:
-            cg.add(setter(value))
-
     # sendspin-cpp library
     esp32.add_idf_component(name="sendspin/sendspin-cpp", ref="0.7.2")
 

esphome/components/sendspin/sendspin_hub.cpp

@@ -76,12 +76,8 @@ void SendspinHub::dump_config() {
   ESP_LOGCONFIG(TAG,
                 "Sendspin Hub:\n"
                 "  Client ID: %s\n"
-                "  Manufacturer: %s\n"
-                "  Model: %s\n"
-                "  Firmware version: %s\n"
                 "  Task stack in PSRAM: %s",
-                get_client_id_into_buffer(mac_buf), this->manufacturer_, this->get_product_name_(),
-                this->firmware_version_, YESNO(this->task_stack_in_psram_));
+                get_client_id_into_buffer(mac_buf), YESNO(this->task_stack_in_psram_));
 
 #ifdef USE_SENDSPIN_ARTWORK
   // Slot indices come from the order the image platform entries were declared, so the log is the
@@ -131,19 +127,15 @@ const char *SendspinHub::get_client_id_into_buffer(std::span<char, MAC_ADDRESS_P
   return get_mac_address_pretty_into_buffer(buf);
 }
 
-const char *SendspinHub::get_product_name_() const {
-  return this->model_ != nullptr ? this->model_ : App.get_name().c_str();
-}
-
 sendspin::SendspinClientConfig SendspinHub::build_client_config_() {
   sendspin::SendspinClientConfig config;
 
   char mac_buf[MAC_ADDRESS_PRETTY_BUFFER_SIZE];
   config.client_id = SendspinHub::get_client_id_into_buffer(mac_buf);
   config.name = App.get_friendly_name();
-  config.product_name = this->get_product_name_();
-  config.manufacturer = this->manufacturer_;
-  config.software_version = this->firmware_version_;
+  config.product_name = App.get_name();
+  config.manufacturer = "ESPHome";
+  config.software_version = ESPHOME_VERSION;
   config.httpd_psram_stack = this->task_stack_in_psram_;
 
   return config;

esphome/components/sendspin/sendspin_hub.h

@@ -8,7 +8,6 @@
 #include "esphome/core/component.h"
 #include "esphome/core/helpers.h"
 #include "esphome/core/preferences.h"
-#include "esphome/core/version.h"
 
 #include <sendspin/client.h>
 #include <sendspin/config.h>
@@ -126,15 +125,6 @@ class SendspinHub final : public Component,
 
   void set_task_stack_in_psram(bool task_stack_in_psram) { this->task_stack_in_psram_ = task_stack_in_psram; }
 
-  /// @brief Sets the device information reported to the server in the `client/hello` message.
-  ///
-  /// Each takes a pointer to a string literal emitted by codegen, so it must stay valid for the
-  /// lifetime of the hub. Only called for values the configuration overrides; anything left alone
-  /// keeps the default described on the member below.
-  void set_manufacturer(const char *manufacturer) { this->manufacturer_ = manufacturer; }
-  void set_model(const char *model) { this->model_ = model; }
-  void set_firmware_version(const char *firmware_version) { this->firmware_version_ = firmware_version; }
-
   // --- Sendspin role specific methods ---
 
 #ifdef USE_SENDSPIN_ARTWORK
@@ -197,9 +187,6 @@ class SendspinHub final : public Component,
   /// @brief Builds the SendspinClientConfig from ESPHome configuration and platform info.
   sendspin::SendspinClientConfig build_client_config_();
 
-  /// @brief Returns the product name reported to the server: the configured model, or the device name.
-  const char *get_product_name_() const;
-
   /// @brief Writes the active network interface's MAC into @p buf and returns its data pointer.
   /// Uses the ethernet MAC if ethernet is configured, otherwise the base MAC (used by wifi).
   static const char *get_client_id_into_buffer(std::span<char, MAC_ADDRESS_PRETTY_BUFFER_SIZE> buf);
@@ -281,12 +268,6 @@ class SendspinHub final : public Component,
   CallbackManager<void(const sendspin::GroupUpdateObject &)> group_update_callbacks_{};
 
   bool task_stack_in_psram_{false};
-
-  // Device information sent in the `client/hello` message. Defaults apply when neither the
-  // sendspin configuration nor the project information supplies a value.
-  const char *manufacturer_{"ESPHome"};
-  const char *model_{nullptr};  // nullptr reports the device name instead
-  const char *firmware_version_{ESPHOME_VERSION};
 };
 
 /// @brief Base class for all sendspin subcomponents.

esphome/components/socket/bsd_sockets_impl.cpp

@@ -59,13 +59,15 @@ int BSDSocketImpl::close() {
 
 int BSDSocketImpl::setblocking(bool blocking) {
   int fl = ::fcntl(this->fd_, F_GETFL, 0);
+  if (fl < 0) {
+    return fl;
+  }
   if (blocking) {
     fl &= ~O_NONBLOCK;
   } else {
     fl |= O_NONBLOCK;
   }
-  ::fcntl(this->fd_, F_SETFL, fl);
-  return 0;
+  return ::fcntl(this->fd_, F_SETFL, fl);
 }
 
 size_t BSDSocketImpl::getpeername_to(std::span<char, SOCKADDR_STR_LEN> buf) {

esphome/components/socket/headers.h

@@ -205,6 +205,13 @@ static constexpr size_t SOCKADDR_STR_LEN = 46;  // INET6_ADDRSTRLEN
 static constexpr size_t SOCKADDR_STR_LEN = 16;  // INET_ADDRSTRLEN
 #endif
 
+/// Outcome of polling a non-blocking connect(); see socket::poll_connect().
+enum class ConnectPollResult : uint8_t {
+  CONNECT_POLL_RESULT_PENDING,
+  CONNECT_POLL_RESULT_CONNECTED,
+  CONNECT_POLL_RESULT_ERROR,
+};
+
 }  // namespace esphome::socket
 
 #endif

esphome/components/socket/lwip_raw_tcp_impl.cpp

@@ -48,8 +48,33 @@ static const char *const TAG = "socket";
 #ifdef USE_ESP8266
 // optimistic_yield() rate limit in microseconds of CONT time; cheap when hot.
 static constexpr uint32_t ESP8266_YIELD_INTERVAL_US = 1000;
+// Let SYS run so queued WiFi traffic reaches lwip; CONT and SYS are cooperative
+static inline void yield_to_sys() { optimistic_yield(ESP8266_YIELD_INTERVAL_US); }
+#else
+static inline void yield_to_sys() {}
 #endif
 
+// errno for a failed tcp_* call
+static int lwip_err_to_errno(err_t err) {
+  switch (err) {
+    case ERR_MEM:
+      return ENOMEM;
+    case ERR_BUF:
+      return EAGAIN;  // transient, e.g. no free local port
+    case ERR_RTE:
+      return EHOSTUNREACH;  // no route, e.g. no address yet
+    case ERR_VAL:
+    case ERR_ARG:
+      return EINVAL;
+    case ERR_USE:
+      return EADDRINUSE;
+    case ERR_ISCONN:
+      return EISCONN;
+    default:
+      return EIO;
+  }
+}
+
 // set to 1 to enable verbose lwip logging
 #if 0  // NOLINT(readability-avoid-unconditional-preprocessor-if)
 #define LWIP_LOG(msg, ...) ESP_LOGVV(TAG, "socket %p: " msg, this, ##__VA_ARGS__)
@@ -62,8 +87,8 @@ static constexpr uint32_t ESP8266_YIELD_INTERVAL_US = 1000;
 // Must be called before destroying the object that tcp_arg points to —
 // tcp_abort() triggers the err callback synchronously, which would
 // otherwise call back into a partially-destroyed object.
-// tcp_sent/tcp_poll are not cleared because this implementation
-// never registers them.
+// tcp_sent/tcp_poll are never registered and the connect callback cannot
+// fire after abort or close, so neither is cleared.
 static void pcb_detach_abort(struct tcp_pcb *pcb) {
   tcp_arg(pcb, nullptr);
   tcp_recv(pcb, nullptr);
@@ -76,8 +101,7 @@ static void pcb_detach_abort(struct tcp_pcb *pcb) {
 // After tcp_close(), the PCB remains alive during the TCP close handshake
 // (FIN_WAIT, TIME_WAIT states). Without clearing callbacks first, LWIP
 // would call recv/err on a destroyed socket object, corrupting the heap.
-// tcp_sent/tcp_poll are not cleared because this implementation
-// never registers them.
+// Callbacks are left as in pcb_detach_abort().
 // Returns ERR_OK on success; on failure the PCB is aborted instead.
 static err_t pcb_detach_close(struct tcp_pcb *pcb) {
   tcp_arg(pcb, nullptr);
@@ -101,67 +125,51 @@ LWIPRawCommon::~LWIPRawCommon() {
   }
 }
 
+bool LWIPRawCommon::sockaddr2ip_(const struct sockaddr *name, socklen_t addrlen, ip_addr_t *ip, uint16_t *port) const {
+  if (name == nullptr) {
+    errno = EINVAL;
+    return false;
+  }
+#if LWIP_IPV6
+  if (this->family_ == AF_INET6) {
+    if (addrlen < sizeof(sockaddr_in6)) {
+      errno = EINVAL;
+      return false;
+    }
+    auto *addr6 = reinterpret_cast<const sockaddr_in6 *>(name);
+    *port = ntohs(addr6->sin6_port);
+    inet6_addr_to_ip6addr(ip_2_ip6(ip), &addr6->sin6_addr);
+    // ANY lets bind() accept both families; connect() picks the concrete type
+    IP_SET_TYPE_VAL(*ip, IPADDR_TYPE_ANY);
+    return true;
+  }
+#endif
+  if (this->family_ != AF_INET || addrlen < sizeof(sockaddr_in)) {
+    errno = EINVAL;
+    return false;
+  }
+  auto *addr4 = reinterpret_cast<const sockaddr_in *>(name);
+  *port = ntohs(addr4->sin_port);
+  ip_addr_set_ip4_u32(ip, addr4->sin_addr.s_addr);
+  return true;
+}
+
 int LWIPRawCommon::bind(const struct sockaddr *name, socklen_t addrlen) {
   LWIP_LOCK();
   if (this->pcb_ == nullptr) {
     errno = EBADF;
     return -1;
   }
-  if (name == nullptr) {
-    errno = EINVAL;
-    return -1;
-  }
   ip_addr_t ip;
-  in_port_t port;
-#if LWIP_IPV6
-  if (this->family_ == AF_INET) {
-    if (addrlen < sizeof(sockaddr_in)) {
-      errno = EINVAL;
-      return -1;
-    }
-    auto *addr4 = reinterpret_cast<const sockaddr_in *>(name);
-    port = ntohs(addr4->sin_port);
-    ip.type = IPADDR_TYPE_V4;
-    ip.u_addr.ip4.addr = addr4->sin_addr.s_addr;
-    LWIP_LOG("tcp_bind(%p ip=%s port=%u)", this->pcb_, ip4addr_ntoa(&ip.u_addr.ip4), port);
-  } else if (this->family_ == AF_INET6) {
-    if (addrlen < sizeof(sockaddr_in6)) {
-      errno = EINVAL;
-      return -1;
-    }
-    auto *addr6 = reinterpret_cast<const sockaddr_in6 *>(name);
-    port = ntohs(addr6->sin6_port);
-    ip.type = IPADDR_TYPE_ANY;
-    memcpy(&ip.u_addr.ip6.addr, &addr6->sin6_addr.un.u8_addr, 16);
-    LWIP_LOG("tcp_bind(%p ip=%s port=%u)", this->pcb_, ip6addr_ntoa(&ip.u_addr.ip6), port);
-  } else {
-    errno = EINVAL;
+  uint16_t port;
+  if (!this->sockaddr2ip_(name, addrlen, &ip, &port)) {
     return -1;
   }
-#else
-  if (this->family_ != AF_INET) {
-    errno = EINVAL;
-    return -1;
-  }
-  auto *addr4 = reinterpret_cast<const sockaddr_in *>(name);
-  port = ntohs(addr4->sin_port);
-  ip.addr = addr4->sin_addr.s_addr;
-  LWIP_LOG("tcp_bind(%p ip=%u port=%u)", this->pcb_, ip.addr, port);
-#endif
+  LWIP_LOG("tcp_bind(%p ip=%s port=%u)", this->pcb_, ipaddr_ntoa(&ip), port);
   err_t err = tcp_bind(this->pcb_, &ip, port);
-  if (err == ERR_USE) {
-    LWIP_LOG("  -> err ERR_USE");
-    errno = EADDRINUSE;
-    return -1;
-  }
-  if (err == ERR_VAL) {
-    LWIP_LOG("  -> err ERR_VAL");
-    errno = EINVAL;
-    return -1;
-  }
   if (err != ERR_OK) {
     LWIP_LOG("  -> err %d", err);
-    errno = EIO;
+    errno = lwip_err_to_errno(err);
     return -1;
   }
   return 0;
@@ -178,7 +186,7 @@ int LWIPRawCommon::close() {
   this->pcb_ = nullptr;
   if (err != ERR_OK) {
     LWIP_LOG("  -> err %d", err);
-    errno = err == ERR_MEM ? ENOMEM : EIO;
+    errno = lwip_err_to_errno(err);
     return -1;
   }
   return 0;
@@ -205,7 +213,7 @@ int LWIPRawCommon::shutdown(int how) {
   err_t err = tcp_shutdown(this->pcb_, shut_rx, shut_tx);
   if (err != ERR_OK) {
     LWIP_LOG("  -> err %d", err);
-    errno = err == ERR_MEM ? ENOMEM : EIO;
+    errno = lwip_err_to_errno(err);
     return -1;
   }
   return 0;
@@ -425,7 +433,82 @@ void LWIPRawImpl::s_err_fn(void *arg, err_t err) {
   // ERR_ABRT: aborted through tcp_abort or TCP timer
   auto *arg_this = reinterpret_cast<LWIPRawImpl *>(arg);
   ESP_LOGVV(TAG, "socket %p: err(err=%d)", arg_this, err);
+  if (arg_this->connect_err_ == EINPROGRESS) {
+    // Refused (RST) or SYN retries exhausted; written before pcb_ so
+    // poll_connect() never sees a dead pcb without its reason
+    arg_this->connect_err_ = err == ERR_RST ? ECONNREFUSED : ETIMEDOUT;
+  }
   arg_this->pcb_ = nullptr;
+  esphome::wake_loop_any_context();
+}
+
+err_t LWIPRawImpl::s_connected_fn(void *arg, struct tcp_pcb *pcb, err_t err) {
+  // LWIP CALLBACK, same constraints as s_err_fn; err is always ERR_OK
+  auto *arg_this = reinterpret_cast<LWIPRawImpl *>(arg);
+  arg_this->connect_err_ = EISCONN;
+  esphome::wake_loop_any_context();
+  return ERR_OK;
+}
+
+int LWIPRawImpl::connect(const struct sockaddr *addr, socklen_t addrlen) {
+  LWIP_LOCK();
+  if (this->pcb_ == nullptr) {
+    errno = EBADF;
+    return -1;
+  }
+  if (this->connect_err_ == EINPROGRESS || this->connect_err_ == EISCONN) {
+    errno = this->connect_err_ == EINPROGRESS ? EALREADY : EISCONN;
+    return -1;
+  }
+  ip_addr_t ip;
+  uint16_t port;
+  if (!this->sockaddr2ip_(addr, addrlen, &ip, &port)) {
+    return -1;
+  }
+#if LWIP_IPV6
+  // tcp_connect needs a concrete type; a remembered IPv4 peer arrives v4-mapped
+  if (IP_IS_ANY_TYPE_VAL(ip)) {
+    if (ip6_addr_isipv4mappedipv6(ip_2_ip6(&ip))) {
+      unmap_ipv4_mapped_ipv6(ip_2_ip4(&ip), ip_2_ip6(&ip));
+      IP_SET_TYPE_VAL(ip, IPADDR_TYPE_V4);
+    } else {
+      IP_SET_TYPE_VAL(ip, IPADDR_TYPE_V6);
+    }
+  }
+#endif
+  LWIP_LOG("tcp_connect(%p ip=%s port=%u)", this->pcb_, ipaddr_ntoa(&ip), port);
+  err_t err = tcp_connect(this->pcb_, &ip, port, LWIPRawImpl::s_connected_fn);
+  if (err != ERR_OK) {
+    LWIP_LOG("  -> err %d", err);
+    errno = lwip_err_to_errno(err);
+    return -1;
+  }
+  this->connect_err_ = EINPROGRESS;
+  errno = EINPROGRESS;
+  return -1;
+}
+
+ConnectPollResult LWIPRawImpl::poll_connect(int &err_out) const {
+  // pcb_ first; see the ordering note on the declaration
+  if (this->pcb_ == nullptr) {
+    // Only a recorded connect failure carries its own reason
+    const bool failed = this->connect_err_ == ECONNREFUSED || this->connect_err_ == ETIMEDOUT;
+    err_out = failed ? this->connect_err_ : ECONNRESET;
+    return ConnectPollResult::CONNECT_POLL_RESULT_ERROR;
+  }
+  switch (this->connect_err_) {
+    case EINPROGRESS:
+      yield_to_sys();  // so the SYN-ACK is processed between polls
+      return ConnectPollResult::CONNECT_POLL_RESULT_PENDING;
+    case EISCONN:
+      return ConnectPollResult::CONNECT_POLL_RESULT_CONNECTED;
+    case 0:
+      err_out = EINVAL;  // no connect was started
+      return ConnectPollResult::CONNECT_POLL_RESULT_ERROR;
+    default:
+      err_out = this->connect_err_;
+      return ConnectPollResult::CONNECT_POLL_RESULT_ERROR;
+  }
 }
 
 err_t LWIPRawImpl::s_recv_fn(void *arg, struct tcp_pcb *pcb, struct pbuf *pb, err_t err) {
@@ -540,14 +623,11 @@ ssize_t LWIPRawImpl::read_locked_(void *buf, size_t len) {
 }
 
 ssize_t LWIPRawImpl::read(void *buf, size_t len) {
-#ifdef USE_ESP8266
-  // Would block: yield to SYS so queued WiFi RX reaches lwip and this read
-  // may succeed. Without this, inbound segments can sit unprocessed for
-  // seconds while the main loop polls (CONT/SYS are cooperative on ESP8266).
+  // Let queued WiFi RX reach lwip first; otherwise inbound segments can
+  // sit unprocessed for seconds while the main loop polls
   if (this->waiting_for_data_()) {
-    optimistic_yield(ESP8266_YIELD_INTERVAL_US);
+    yield_to_sys();
   }
-#endif
   // See waiting_for_data_() for safety of unlocked reads.
   if (this->recv_timeout_cs_ > 0 && this->waiting_for_data_()) {
     this->wait_for_data_();
@@ -636,12 +716,10 @@ int LWIPRawImpl::internal_output_() {
       return -1;
     }
   }
-#ifdef USE_ESP8266
   // Flushed: yield to SYS so the queued segments reach the WiFi driver
   // instead of waiting seconds for an unrelated SYS slot. Callers only get
   // here after a successful tcp_write, so idle paths never yield.
-  optimistic_yield(ESP8266_YIELD_INTERVAL_US);
-#endif
+  yield_to_sys();
   return 0;
 }
 

esphome/components/socket/lwip_raw_tcp_impl.h

@@ -50,6 +50,8 @@ class LWIPRawCommon {
 
  protected:
   int ip2sockaddr_(ip_addr_t *ip, uint16_t port, struct sockaddr *name, socklen_t *addrlen);
+  /// sockaddr of this socket's family to lwip address and port; false with errno on mismatch
+  bool sockaddr2ip_(const struct sockaddr *name, socklen_t addrlen, ip_addr_t *ip, uint16_t *port) const;
 
   // Member ordering optimized to minimize padding on 32-bit systems
   struct tcp_pcb *pcb_;
@@ -58,7 +60,14 @@ class LWIPRawCommon {
   bool nodelay_ = false;
   sa_family_t family_ = 0;
   uint8_t recv_timeout_cs_ = 0;  // SO_RCVTIMEO in centiseconds (0 = no timeout, max 2.55s)
+  // 0 before connect(), EINPROGRESS while pending, EISCONN once established,
+  // else the failure errno the callbacks recorded; fills the padding byte
+  uint8_t connect_err_ = 0;
+  static_assert(EINPROGRESS < 256 && EISCONN < 256 && ECONNREFUSED < 256 && ECONNRESET < 256 && ETIMEDOUT < 256,
+                "connect_err_ stores errno values in a byte");
 };
+// The connect state must stay in the padding so no socket pays RAM for it
+static_assert(sizeof(LWIPRawCommon) == sizeof(struct tcp_pcb *) + 4, "LWIPRawCommon grew past one word of flags");
 
 /// Connected socket implementation for LWIP raw TCP.
 /// No virtual methods — callers always use the concrete type.
@@ -83,6 +92,12 @@ class LWIPRawImpl : public LWIPRawCommon {
     errno = EOPNOTSUPP;
     return -1;
   }
+  /// Non-blocking: returns -1/EINPROGRESS once the SYN is queued, see poll_connect().
+  /// addr must match the socket family; an IPv4 peer on AF_INET6 arrives v4-mapped.
+  int connect(const struct sockaddr *addr, socklen_t addrlen);
+  // Unlocked like ready(): the callbacks write the error byte before pcb_,
+  // so a torn read only costs one extra poll
+  ConnectPollResult poll_connect(int &err_out) const;
   ssize_t read(void *buf, size_t len);
   ssize_t readv(const struct iovec *iov, int iovcnt);
   ssize_t recvfrom(void *, size_t, sockaddr *, socklen_t *) {
@@ -120,6 +135,7 @@ class LWIPRawImpl : public LWIPRawCommon {
 
   static void s_err_fn(void *arg, err_t err);
   static err_t s_recv_fn(void *arg, struct tcp_pcb *pcb, struct pbuf *pb, err_t err);
+  static err_t s_connected_fn(void *arg, struct tcp_pcb *pcb, err_t err);
 
  protected:
   // True when the socket could receive data but none has arrived yet.
@@ -137,6 +153,9 @@ class LWIPRawImpl : public LWIPRawCommon {
   size_t rx_buf_offset_ = 0;
   bool rx_closed_ = false;
 };
+// rx_buf_, rx_buf_offset_, then rx_closed_ padded to a word
+static_assert(sizeof(LWIPRawImpl) == sizeof(LWIPRawCommon) + sizeof(pbuf *) + sizeof(size_t) + 4,
+              "LWIPRawImpl layout changed");
 
 /// Listening socket implementation for LWIP raw TCP.
 /// Separate from LWIPRawImpl — no virtual dispatch needed.

esphome/components/socket/lwip_sockets_impl.cpp

@@ -49,13 +49,15 @@ int LwIPSocketImpl::close() {
 
 int LwIPSocketImpl::setblocking(bool blocking) {
   int fl = lwip_fcntl(this->fd_, F_GETFL, 0);
+  if (fl < 0) {
+    return fl;
+  }
   if (blocking) {
     fl &= ~O_NONBLOCK;
   } else {
     fl |= O_NONBLOCK;
   }
-  lwip_fcntl(this->fd_, F_SETFL, fl);
-  return 0;
+  return lwip_fcntl(this->fd_, F_SETFL, fl);
 }
 
 size_t LwIPSocketImpl::getpeername_to(std::span<char, SOCKADDR_STR_LEN> buf) {

esphome/components/socket/socket.cpp

@@ -2,6 +2,9 @@
 #if defined(USE_SOCKET_IMPL_LWIP_TCP) || defined(USE_SOCKET_IMPL_LWIP_SOCKETS) || defined(USE_SOCKET_IMPL_BSD_SOCKETS)
 #include <cerrno>
 #include <cstring>
+#ifdef USE_SOCKET_IMPL_BSD_SOCKETS
+#include <sys/select.h>
+#endif
 #include <string>
 #include "esphome/core/log.h"
 #include "esphome/core/application.h"
@@ -165,7 +168,10 @@ socklen_t set_sockaddr(struct sockaddr *addr, socklen_t addrlen, const char *ip_
 #else
     // Use LWIP-specific functions
     ip6_addr_t ip6;
-    inet6_aton(ip_address, &ip6);
+    if (inet6_aton(ip_address, &ip6) == 0) {
+      errno = EINVAL;
+      return 0;
+    }
     memcpy(server->sin6_addr.un.u32_addr, ip6.addr, sizeof(ip6.addr));
 #endif
     return sizeof(sockaddr_in6);
@@ -185,12 +191,58 @@ socklen_t set_sockaddr(struct sockaddr *addr, socklen_t addrlen, const char *ip_
     return 0;
   }
 #else
-  server->sin_addr.s_addr = inet_addr(ip_address);
+  // Unlike inet_addr(), inet_aton() can signal failure while still
+  // accepting the broadcast address 255.255.255.255
+  if (inet_aton(ip_address, &server->sin_addr) == 0) {
+    errno = EINVAL;
+    return 0;
+  }
 #endif
   server->sin_port = htons(port);
   return sizeof(sockaddr_in);
 }
 
+#if defined(USE_SOCKET_IMPL_BSD_SOCKETS) || defined(USE_SOCKET_IMPL_LWIP_SOCKETS)
+ConnectPollResult poll_connect(Socket &sock, int &err_out) {
+  int fd = sock.get_fd();
+  if (fd < 0 || fd >= FD_SETSIZE) {
+    // FD_SET on either is undefined behavior
+    err_out = EBADF;
+    return ConnectPollResult::CONNECT_POLL_RESULT_ERROR;
+  }
+  // Connect completion is a write event; the main loop only selects on reads
+  fd_set writefds;
+  FD_ZERO(&writefds);
+  FD_SET(fd, &writefds);
+  struct timeval tv = {0, 0};
+#ifdef USE_SOCKET_IMPL_LWIP_SOCKETS
+  // LWIP_COMPAT_SOCKETS may be off (LibreTiny), so use the lwip symbol directly
+  int ret = lwip_select(fd + 1, nullptr, &writefds, nullptr, &tv);
+#else
+  // Global-scope select: the entity namespace esphome::select shadows it here
+  int ret = ::select(fd + 1, nullptr, &writefds, nullptr, &tv);
+#endif
+  if (ret < 0) {
+    err_out = errno;
+    return ConnectPollResult::CONNECT_POLL_RESULT_ERROR;
+  }
+  if (ret == 0) {
+    return ConnectPollResult::CONNECT_POLL_RESULT_PENDING;
+  }
+  int error = 0;
+  socklen_t len = sizeof(error);
+  if (sock.getsockopt(SOL_SOCKET, SO_ERROR, &error, &len) != 0) {
+    err_out = errno;
+    return ConnectPollResult::CONNECT_POLL_RESULT_ERROR;
+  }
+  if (error != 0) {
+    err_out = error;
+    return ConnectPollResult::CONNECT_POLL_RESULT_ERROR;
+  }
+  return ConnectPollResult::CONNECT_POLL_RESULT_CONNECTED;
+}
+#endif
+
 socklen_t set_sockaddr_any(struct sockaddr *addr, socklen_t addrlen, uint16_t port) {
 #if USE_NETWORK_IPV6
   if (addrlen < sizeof(sockaddr_in6)) {

esphome/components/socket/socket.h

@@ -145,6 +145,14 @@ inline socklen_t set_sockaddr(struct sockaddr *addr, socklen_t addrlen, const st
 /// Set a sockaddr to the any address and specified port for the IP version used by socket_ip().
 socklen_t set_sockaddr_any(struct sockaddr *addr, socklen_t addrlen, uint16_t port);
 
+/// Poll a connect() that returned EINPROGRESS. On error, err_out is SO_ERROR (or
+/// errno) on fd implementations and the failure the callbacks recorded on raw lwip.
+#ifdef USE_SOCKET_IMPL_LWIP_TCP
+inline ConnectPollResult poll_connect(Socket &sock, int &err_out) { return sock.poll_connect(err_out); }
+#else
+ConnectPollResult poll_connect(Socket &sock, int &err_out);
+#endif
+
 /// Format sockaddr into caller-provided buffer, returns length written (excluding null)
 size_t format_sockaddr_to(const struct sockaddr *addr_ptr, socklen_t len, std::span<char, SOCKADDR_STR_LEN> buf);
 

esphome/components/udp/udp_component.cpp

@@ -13,7 +13,12 @@ void UDPComponent::setup() {
 #if defined(USE_SOCKET_IMPL_BSD_SOCKETS) || defined(USE_SOCKET_IMPL_LWIP_SOCKETS)
   for (const auto &address : this->addresses_) {
     struct sockaddr saddr {};
-    socket::set_sockaddr(&saddr, sizeof(saddr), address, this->broadcast_port_);
+    if (socket::set_sockaddr(&saddr, sizeof(saddr), address, this->broadcast_port_) == 0) {
+      ESP_LOGW(TAG, "Invalid address %s", address);
+      // A dropped address silently receives nothing; surface the misconfiguration
+      this->status_set_warning(LOG_STR("invalid address"));
+      continue;
+    }
     this->sockaddrs_.push_back(saddr);
   }
   // set up broadcast socket
@@ -94,7 +99,11 @@ void UDPComponent::setup() {
   // 8266 and RP2040 `Duino
   for (const auto &address : this->addresses_) {
     auto ipaddr = IPAddress();
-    ipaddr.fromString(address);
+    if (!ipaddr.fromString(address)) {
+      ESP_LOGW(TAG, "Invalid address %s", address);
+      this->status_set_warning(LOG_STR("invalid address"));
+      continue;
+    }
     this->ipaddrs_.push_back(ipaddr);
   }
   if (this->should_listen_)

esphome/components/wake_on_lan/wake_on_lan.cpp

@@ -34,6 +34,10 @@ void WakeOnLanButton::press_action() {
   struct sockaddr_storage saddr {};
   auto addr_len =
       socket::set_sockaddr(reinterpret_cast<sockaddr *>(&saddr), sizeof(saddr), "255.255.255.255", this->port_);
+  if (addr_len == 0) {
+    ESP_LOGW(TAG, "Invalid broadcast address");
+    return;
+  }
   uint8_t buffer[6 + sizeof this->macaddr_ * 16];
   memcpy(buffer, PREFIX, sizeof(PREFIX));
   for (size_t i = 0; i != 16; i++) {

tests/component_tests/sendspin/config/device_info_default.yaml

@@ -1,12 +0,0 @@
-esphome:
-  name: test
-
-esp32:
-  board: esp32dev
-  framework:
-    type: esp-idf
-
-wifi:
-  ap:
-
-sendspin:

tests/component_tests/sendspin/config/device_info_explicit.yaml

@@ -1,18 +0,0 @@
-esphome:
-  name: test
-  project:
-    name: project_manufacturer.project_model
-    version: 9.9.9
-
-esp32:
-  board: esp32dev
-  framework:
-    type: esp-idf
-
-wifi:
-  ap:
-
-sendspin:
-  manufacturer: Explicit Manufacturer
-  model: Explicit Model
-  firmware_version: 1.2.3

tests/component_tests/sendspin/config/device_info_project.yaml

@@ -1,15 +0,0 @@
-esphome:
-  name: test
-  project:
-    name: project_manufacturer.project_model
-    version: 9.9.9
-
-esp32:
-  board: esp32dev
-  framework:
-    type: esp-idf
-
-wifi:
-  ap:
-
-sendspin:

tests/component_tests/sendspin/test_device_info.py

@@ -1,83 +0,0 @@
-"""Tests for the device information the sendspin hub reports to the server."""
-
-from __future__ import annotations
-
-from collections.abc import Callable
-from pathlib import Path
-
-import pytest
-
-from esphome import config_validation as cv
-from esphome.components.sendspin import (
-    CONF_FIRMWARE_VERSION,
-    CONF_MANUFACTURER,
-    CONFIG_SCHEMA,
-)
-from esphome.const import CONF_MODEL, PlatformFramework
-from tests.component_tests.types import SetCoreConfigCallable
-
-
-def test_explicit_device_info_wins_over_project(
-    generate_main: Callable[[str | Path], str],
-    component_config_path: Callable[[str], Path],
-) -> None:
-    """Configured values take precedence over the project information."""
-    main_cpp = generate_main(component_config_path("device_info_explicit.yaml"))
-
-    assert 'set_manufacturer("Explicit Manufacturer")' in main_cpp
-    assert 'set_model("Explicit Model")' in main_cpp
-    assert 'set_firmware_version("1.2.3")' in main_cpp
-
-
-def test_project_supplies_device_info(
-    generate_main: Callable[[str | Path], str],
-    component_config_path: Callable[[str], Path],
-) -> None:
-    """Without configured values, the project name splits into manufacturer and model."""
-    main_cpp = generate_main(component_config_path("device_info_project.yaml"))
-
-    assert 'set_manufacturer("project_manufacturer")' in main_cpp
-    assert 'set_model("project_model")' in main_cpp
-    assert 'set_firmware_version("9.9.9")' in main_cpp
-
-
-def test_no_device_info_leaves_hub_defaults(
-    generate_main: Callable[[str | Path], str],
-    component_config_path: Callable[[str], Path],
-) -> None:
-    """With neither source, nothing is emitted and the hub keeps its own defaults."""
-    main_cpp = generate_main(component_config_path("device_info_default.yaml"))
-
-    assert "set_manufacturer(" not in main_cpp
-    assert "set_model(" not in main_cpp
-    assert "set_firmware_version(" not in main_cpp
-
-
-@pytest.mark.parametrize(
-    "conf_key", [CONF_MANUFACTURER, CONF_MODEL, CONF_FIRMWARE_VERSION]
-)
-def test_empty_device_info_rejected(
-    set_core_config: SetCoreConfigCallable, conf_key: str
-) -> None:
-    """An empty string would be sent to the server as an empty value, so it is not accepted."""
-    set_core_config(PlatformFramework.ESP32_IDF)
-
-    with pytest.raises(cv.Invalid):
-        CONFIG_SCHEMA({conf_key: ""})
-
-
-@pytest.mark.parametrize(
-    "conf_key", [CONF_MANUFACTURER, CONF_MODEL, CONF_FIRMWARE_VERSION]
-)
-def test_device_info_capped_at_127_bytes(
-    set_core_config: SetCoreConfigCallable, conf_key: str
-) -> None:
-    """The cap is in bytes so the protobuf length prefix stays a single byte."""
-    set_core_config(PlatformFramework.ESP32_IDF)
-
-    CONFIG_SCHEMA({conf_key: "a" * 127})
-    with pytest.raises(cv.Invalid):
-        CONFIG_SCHEMA({conf_key: "a" * 128})
-    # 64 two-byte characters is 128 bytes.
-    with pytest.raises(cv.Invalid):
-        CONFIG_SCHEMA({conf_key: "é" * 64})

tests/components/sendspin/common-hub.yaml

@@ -4,6 +4,3 @@ psram:
 sendspin:
   id: sendspin_hub_id
   task_stack_in_psram: true
-  manufacturer: Test Manufacturer
-  model: Test Model
-  firmware_version: 1.2.3

tests/components/socket/test-ipv6.rp2040-ard.yaml

@@ -0,0 +1,4 @@
+substitutions:
+  network_enable_ipv6: "true"
+
+<<: !include common.yaml

tests/integration/fixtures/socket_set_sockaddr.yaml

@@ -0,0 +1,17 @@
+esphome:
+  name: socket-set-sockaddr
+  on_boot:
+    then:
+      - lambda: |-
+          // 0 for text that is not an address, the length otherwise, broadcast included
+          struct sockaddr_storage addr;
+          auto *sa = reinterpret_cast<struct sockaddr *>(&addr);
+          ESP_LOGI("test", "SET_SOCKADDR invalid=%u valid=%u broadcast=%u",
+                   (unsigned) socket::set_sockaddr(sa, sizeof(addr), "not an address", 1234),
+                   (unsigned) socket::set_sockaddr(sa, sizeof(addr), "192.0.2.1", 1234),
+                   (unsigned) socket::set_sockaddr(sa, sizeof(addr), "255.255.255.255", 1234));
+
+host:
+api:
+logger:
+  level: INFO

tests/integration/test_socket_set_sockaddr.py

@@ -0,0 +1,40 @@
+"""Integration test for the socket::set_sockaddr failure contract."""
+
+import asyncio
+import re
+
+import pytest
+
+from .types import APIClientConnectedFactory, RunCompiledFunction
+
+
+@pytest.mark.asyncio
+async def test_socket_set_sockaddr(
+    yaml_config: str,
+    run_compiled: RunCompiledFunction,
+    api_client_connected: APIClientConnectedFactory,
+) -> None:
+    """set_sockaddr reports an invalid address with 0 and accepts broadcast."""
+    loop = asyncio.get_running_loop()
+    result: asyncio.Future[tuple[int, int, int]] = loop.create_future()
+
+    def on_log_line(line: str) -> None:
+        match = re.search(
+            r"SET_SOCKADDR invalid=(\d+) valid=(\d+) broadcast=(\d+)", line
+        )
+        if match and not result.done():
+            result.set_result(tuple(int(g) for g in match.groups()))
+
+    async with (
+        run_compiled(yaml_config, line_callback=on_log_line),
+        api_client_connected() as client,
+    ):
+        assert (await client.device_info()).name == "socket-set-sockaddr"
+        try:
+            invalid, valid, broadcast = await asyncio.wait_for(result, timeout=10.0)
+        except TimeoutError:
+            pytest.fail("SET_SOCKADDR marker never appeared")
+
+    assert invalid == 0
+    assert valid > 0
+    assert broadcast == valid