1 500 - Command not found
2 501 - Wrong number of arguments
3 502 - Unauthorized request
4 503 - Already logged in
5 504 - Could not convert to character set
7 506 - Authentication error
8 507 - Command not expected
9 508 - No such authentication mechanism
10 509 - Malformed argument
11 510 - No such fnetnode
13 512 - No such transfer
14 513 - Not supported for this fnet
22 605 - FN num peers change
24 611 - Transfer state change
25 612 - Transfer nick change
26 613 - Transfer size change
27 614 - Transfer error update
28 615 - Transfer progress
29 616 - Transfer path change
30 617 - Transfer destroy
31 618 - Transfer hash update
32 620 - Search ETA change