* Fix RAK4631 Ethernet gateway API connection loss after W5100S brownout
PoE power instability can brownout the W5100S while the nRF52 MCU keeps
running, causing all chip registers (MAC, IP, sockets) to revert to
defaults. The firmware had no mechanism to detect or recover from this.
Changes:
- Detect W5100S chip reset by periodically verifying MAC address register
in reconnectETH(); on mismatch, perform full hardware reset and
re-initialize Ethernet interface and services
- Add deInitApiServer() for clean API server teardown during recovery
- Add ~APIServerPort destructor to prevent memory leaks
- Switch nRF52 from EthernetServer::available() to accept() to prevent
the same connected client from being repeatedly re-reported
- Add proactive dead-connection cleanup in APIServerPort::runOnce()
- Add 15-minute TCP idle timeout to close half-open connections that
consume limited W5100S hardware sockets
Fixesmeshtastic/firmware#6970
Made-with: Cursor
* Log actual elapsed idle time instead of constant timeout value
Address Copilot review comment: log millis() - lastContactMsec to show
the real time since last client activity, rather than always logging the
TCP_IDLE_TIMEOUT_MS constant.
Made-with: Cursor
* Update src/mesh/api/ServerAPI.h
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Stop UDP multicast handler during W5100S brownout recovery
After a W5100S chip brownout, the udpHandler isRunning flag stays
true while the underlying socket is dead. Without calling stop(),
the subsequent start() no-ops and multicast is silently broken
after recovery.
Made-with: Cursor
* Address Copilot review: recovery flags and timeout constant
Move ethStartupComplete and ntp_renew reset to immediately after
service teardown, before Ethernet.begin(). Previously, if DHCP
failed the early return left ethStartupComplete=true, preventing
service re-initialization on subsequent retries.
Replace #define TCP_IDLE_TIMEOUT_MS with static constexpr uint32_t
for type safety and better C++ practice.
Made-with: Cursor
---------
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Fix RAK4631 Ethernet gateway API connection loss after W5100S brownout
PoE power instability can brownout the W5100S while the nRF52 MCU keeps
running, causing all chip registers (MAC, IP, sockets) to revert to
defaults. The firmware had no mechanism to detect or recover from this.
Changes:
- Detect W5100S chip reset by periodically verifying MAC address register
in reconnectETH(); on mismatch, perform full hardware reset and
re-initialize Ethernet interface and services
- Add deInitApiServer() for clean API server teardown during recovery
- Add ~APIServerPort destructor to prevent memory leaks
- Switch nRF52 from EthernetServer::available() to accept() to prevent
the same connected client from being repeatedly re-reported
- Add proactive dead-connection cleanup in APIServerPort::runOnce()
- Add 15-minute TCP idle timeout to close half-open connections that
consume limited W5100S hardware sockets
Fixesmeshtastic/firmware#6970
Made-with: Cursor
* Log actual elapsed idle time instead of constant timeout value
Address Copilot review comment: log millis() - lastContactMsec to show
the real time since last client activity, rather than always logging the
TCP_IDLE_TIMEOUT_MS constant.
Made-with: Cursor
* Update src/mesh/api/ServerAPI.h
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Stop UDP multicast handler during W5100S brownout recovery
After a W5100S chip brownout, the udpHandler isRunning flag stays
true while the underlying socket is dead. Without calling stop(),
the subsequent start() no-ops and multicast is silently broken
after recovery.
Made-with: Cursor
* Address Copilot review: recovery flags and timeout constant
Move ethStartupComplete and ntp_renew reset to immediately after
service teardown, before Ethernet.begin(). Previously, if DHCP
failed the early return left ethStartupComplete=true, preventing
service re-initialization on subsequent retries.
Replace #define TCP_IDLE_TIMEOUT_MS with static constexpr uint32_t
for type safety and better C++ practice.
Made-with: Cursor
---------
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
socketSendUDP() calls yield() while waiting for SEND_OK, allowing the
cooperative scheduler to run AsyncUDP::runOnce(). When runOnce() calls
parsePacket() on the same socket during an active send, the multicast
loopback packet arriving from the switch produces a garbled 8-byte RX
header (wrong source IP, wrong payload length), leading to protobuf
decode errors in UdpMulticastHandler.
Add a volatile isSending flag that writeTo() sets around endPacket()
(the only yield point). runOnce() checks this flag and skips
parsePacket() while a send is in progress. Loopback packets stay
buffered in the W5100S RX buffer and are read cleanly on the next
poll cycle.
Also propagate writeTo() return value in UdpMulticastHandler::onSend()
instead of unconditionally returning true.
Made-with: Cursor
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
