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[web_server_idf] Fix lwIP assertion crash by shutting down sockets on connection close (#11937)

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This commit is contained in:
J. Nick Koston
2025-11-16 18:39:01 -06:00
committed by GitHub
parent 96ee38759d
commit 3b860e784c
1 changed files with 12 additions and 4 deletions
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16
esphome/components/web_server_idf/web_server_idf.cpp
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@@ -489,10 +489,18 @@ AsyncEventSourceResponse::AsyncEventSourceResponse(const AsyncWebServerRequest *
void AsyncEventSourceResponse::destroy(void *ptr) {
auto *rsp = static_cast<AsyncEventSourceResponse *>(ptr);
ESP_LOGD(TAG, "Event source connection closed (fd: %d)", rsp->fd_.load());
// Mark as dead by setting fd to 0 - will be cleaned up in the main loop
rsp->fd_.store(0);
// Note: We don't delete or remove from set here to avoid race conditions
int fd = rsp->fd_.exchange(0); // Atomically get and clear fd
if (fd > 0) {
ESP_LOGD(TAG, "Event source connection closed (fd: %d)", fd);
// Immediately shut down the socket to prevent lwIP from delivering more data
// This prevents "recv_tcp: recv for wrong pcb!" assertions when the TCP stack
// tries to deliver queued data after the session is marked as dead
// See: https://github.com/esphome/esphome/issues/11936
shutdown(fd, SHUT_RDWR);
// Note: We don't close() the socket - httpd owns it and will close it
}
// Session will be cleaned up in the main loop to avoid race conditions
}
// helper for allowing only unique entries in the queue