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J. Nick Koston
c43015a467
Replace the non-blocking poll + delay(1) pattern in OTA data transfer with SO_RCVTIMEO blocking reads. The socket now wakes immediately when data arrives instead of sleeping 1ms between polls. Adds SO_RCVTIMEO support to the raw TCP socket implementation (ESP8266, RP2040) using the existing socket_delay()/socket_wake() infrastructure. The timeout is stored as a uint8_t in centiseconds, fitting in existing struct padding with zero RAM cost. Tested OTA improvements across platforms: - ESP32-S3: ~15% faster (6.96-7.76s -> 5.87-6.60s) - LibreTiny RTL: 24% faster (18.84s -> 14.33s) - LibreTiny BK72xx: 56% faster (55.52s -> 24.38s) - ESP8266: ~1% faster (compressed OTA, already efficient)
