flexisip TLS setup failed

[sercangoger]

I can make UDP, TCP connections with the linphone android application. but when I want to do TLS, I see the following error in flexisip server logs. what should I do.?

2022-06-24 10:26:19:177 flexisip-debug-tport_wakeup_pri(0x55b2eb456c10): events IN 2022-06-24 10:26:19:177 flexisip-debug-tport_alloc_secondary(0x55b2eb456c10): new secondary tport 0x55b2eb7ea350 2022-06-24 10:26:19:177 flexisip-debug-tport_tls_accept(0x55b2eb7ea350): new connection from tls/88.-.-.21:37192 2022-06-24 10:26:19:186 flexisip-debug-tls_connect(0x55b2eb7ea350): events NEGOTIATING 2022-06-24 10:26:19:187 flexisip-debug-tls_connect(0x55b2eb7ea350): TLS setup failed (error:00000001:lib(0):func(0):reason(1)) 2022-06-24 10:26:19:187 flexisip-debug-tport_close(0x55b2eb7ea350): tls/88.-.-.21:37192 2022-06-24 10:26:19:522 flexisip-debug-tport_wakeup_pri(0x55b2eb456c10): events IN 2022-06-24 10:26:19:523 flexisip-debug-tport_alloc_secondary(0x55b2eb456c10): new secondary tport 0x55b2eb7e8810 2022-06-24 10:26:19:523 flexisip-debug-tport_tls_accept(0x55b2eb7e8810): new connection from tls/88.-.-.21:37194 2022-06-24 10:26:19:527 flexisip-debug-tls_connect(0x55b2eb7e8810): events NEGOTIATING 2022-06-24 10:26:19:528 flexisip-debug-tls_connect(0x55b2eb7e8810): TLS setup failed (error:00000001:lib(0):func(0):reason(1)) 2022-06-24 10:26:19:528 flexisip-debug-tport_close(0x55b2eb7e8810): tls/88.-.-.21:37194

[halilakpinarr]

How can we run Flexisip as Transport type TLS?