C-SDK: max buffer size for ziti_write() function?

SDK Questions sdk-c
3

the MTU size on the ziti interface:

utun8: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 4000
	options=6403<RXCSUM,TXCSUM,CHANNEL_IO,PARTIAL_CSUM,ZEROINVERT_CSUM>
	inet 100.64.0.1 --> 100.64.0.1 netmask 0xffc00000