objc-zmq background, flash back

[xuchuandong]

I start ZMQ, then ios device lock screen, flash back, error is as follows:

1. When the lock screen, appear inkpad output: Bad file descriptor (tcp_connecter.cpp:301)
2. When the screen to unlock, appear the following error: Gymne_YDD_iPhone`zmq::zmq_abort: 0x100451454 <+0>: stp x29, x30, [sp, #-16]! 0x100451458 <+4>: mov x29, sp 0x10045145c <+8>: bl 0x10057c4b4 ; symbol stub for: abort

Could you tell me how to solve this problem?Very grateful！