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J. Nick Koston
96657f71a2
On ESP8266, the roaming scan goes off-channel for ~3 seconds. Some APs aggressively disconnect the client (Beacon Timeout) 8-20 seconds after the scan finishes. By that time, process_roaming_scan_() has already set roaming_state_ back to IDLE. When retry_connect() runs, it sees IDLE and calls clear_roaming_state_(), resetting the attempts counter to 0. This creates an infinite loop of "attempt 1/3" every 5 minutes. The aggressive AP behavior cannot be fixed from the ESP side, but we can prevent the counter from resetting so roaming eventually stops after 3 attempts. Fix by recording when the roaming scan completes and adding a 30s grace period. If a disconnect occurs within that window, the state transitions to RECONNECTING (preserving the counter) instead of clearing it. Closes https://github.com/esphome/esphome/issues/15124
