cottongin/crosspoint-reader
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mDNS tweaks

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cottongin 2026-01-25 16:07:00 -05:00
parent e9e9ef68da
commit af58eb1987
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2 changed files with 31 additions and 0 deletions
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3
platformio.ini
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@ -30,6 +30,9 @@ build_flags =
-std=c++2a
# Enable UTF-8 long file names in SdFat
-DUSE_UTF8_LONG_NAMES=1
# mDNS service discovery for companion app network scanning
-DMDNS_SERVICE_DISCOVERY=1
-DMDNS_SERVICE_TXT_RECORDS=1
; Board configuration
board_build.flash_mode = dio

28
src/activities/network/CrossPointWebServerActivity.cpp
View File

@ -25,6 +25,32 @@ constexpr uint8_t AP_MAX_CONNECTIONS = 4;
// DNS server for captive portal (redirects all DNS queries to our IP)
DNSServer* dnsServer = nullptr;
constexpr uint16_t DNS_PORT = 53;
// mDNS service discovery - advertises the device for network scanning
// Controlled by build flags in platformio.ini:
// MDNS_SERVICE_DISCOVERY - enables service advertisement (required for Android NSD)
// MDNS_SERVICE_TXT_RECORDS - enables TXT record metadata (device type, ports)
void setupMdnsServiceDiscovery(uint16_t httpPort, uint16_t wsPort) {
#if MDNS_SERVICE_DISCOVERY
// Advertise HTTP service for network discovery (required for Android NSD)
MDNS.addService("http", "tcp", httpPort);
Serial.printf("[%lu] [WEBACT] mDNS service advertised: _http._tcp port %d\n", millis(), httpPort);
#if MDNS_SERVICE_TXT_RECORDS
// Add TXT records with device info for enhanced discovery
MDNS.addServiceTxt("http", "tcp", "device", "crosspoint");
MDNS.addServiceTxt("http", "tcp", "wsPort", String(wsPort).c_str());
Serial.printf("[%lu] [WEBACT] mDNS TXT records added (device=crosspoint, wsPort=%d)\n", millis(), wsPort);
#else
(void)wsPort;
#endif
#else
(void)httpPort;
(void)wsPort;
Serial.printf("[%lu] [WEBACT] mDNS service discovery disabled\n", millis());
#endif
}
} // namespace
void CrossPointWebServerActivity::taskTrampoline(void* param) {
@ -167,6 +193,7 @@ void CrossPointWebServerActivity::onWifiSelectionComplete(const bool connected)
// Start mDNS for hostname resolution
if (MDNS.begin(AP_HOSTNAME)) {
Serial.printf("[%lu] [WEBACT] mDNS started: http://%s.local/\n", millis(), AP_HOSTNAME);
setupMdnsServiceDiscovery(80, 81);
}
// Start the web server
@ -220,6 +247,7 @@ void CrossPointWebServerActivity::startAccessPoint() {
// Start mDNS for hostname resolution
if (MDNS.begin(AP_HOSTNAME)) {
Serial.printf("[%lu] [WEBACT] mDNS started: http://%s.local/\n", millis(), AP_HOSTNAME);
setupMdnsServiceDiscovery(80, 81);
} else {
Serial.printf("[%lu] [WEBACT] WARNING: mDNS failed to start\n", millis());
}