Sending a fragmented packet to a UDP socket is messing up receiving. about picotcp HOT 1 CLOSED

Implementation details:
- pico_udp_recv function (pico_udp.c) changed: f->payload and f->payload_len should be initialized once for each frame:
if(!f->payload_len) {
f->payload = f->transport_hdr + sizeof(struct pico_udp_hdr);
f->payload_len = (uint16_t)(f->transport_len - sizeof(struct pico_udp_hdr));
}
- pico_ipv4_fragmented_check function (pico_ipv4.c) changed: drop reassembled frames grater than 4k:
if (pfrag->total_len > PICO_IPV4_FRAG_MAX_SIZE) {
reassembly_dbg("BIG frame!!!\n");
pfrag = pico_tree_first(&pico_ipv4_fragmented_tree);
pico_ipv4_fragmented_cleanup(pfrag);
pico_frame_discard(*f);
return 0;
}

Mbed tests passed => Issue closed.

from picotcp.