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[wifi] Use stack buffers for IP address logging to avoid heap allocations

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This commit is contained in:
J. Nick Koston
2025-12-27 09:26:44 -10:00
parent a8fb40c946
commit 52c692c99b
1 changed files with 3 additions and 3 deletions
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esphome/components/wifi/wifi_component_esp_idf.cpp
+3 -3
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@@ -981,9 +981,9 @@ bool WiFiComponent::wifi_ap_ip_config_(const optional<ManualIP> &manual_ip) {
// Configure DHCP Option 114 (Captive Portal URI) if captive portal is enabled
// This provides a standards-compliant way for clients to discover the captive portal
if (captive_portal::global_captive_portal != nullptr) {
static char captive_portal_uri[32];
char ip_buf[network::IP_ADDRESS_BUFFER_SIZE];
snprintf(captive_portal_uri, sizeof(captive_portal_uri), "http://%s", network::IPAddress(&info.ip).str_to(ip_buf));
char captive_portal_uri[7 + network::IP_ADDRESS_BUFFER_SIZE]; // "http://" + IP
memcpy(captive_portal_uri, "http://", 7);
network::IPAddress(&info.ip).str_to(captive_portal_uri + 7);
err = esp_netif_dhcps_option(s_ap_netif, ESP_NETIF_OP_SET, ESP_NETIF_CAPTIVEPORTAL_URI, captive_portal_uri,
strlen(captive_portal_uri));
if (err != ESP_OK) {