出现 TLS connect() 错误：[code=70006]: Not found (PJ_ENOTFOUND) with pjsua(2) 与我的程序和 pjsip 集成。该错误似乎没有描述实际错误。究竟是怎么回事？？什么没找到？
以下情况属实：
- 相同的代码适用于 Windows
- 相同的程序将适用于开发的 Mac（El Capitan 和 Mojave 开发机器）
- 当打包在单个 .app 中时，同一程序在另一台 Mac 上引发以下完整错误
- 服务器（songbird.sip.server，不是实际的服务器名称）是可访问的，Asterisk PBX，在 SIP 调试中不显示任何连接尝试，可以从设备 ping
- Mac 设备上没有防火墙处于活动状态
2019-09-26, 13:59:38.184699: <debug> (0x0000700002164000) [PJSIP] pjsua_acc.c Acc 0: setting registration..
2019-09-26, 13:59:38.186322: <debug> (0x0000700002164000) [PJSIP] tlsc0x7f90d706d428 TLS client transport created
2019-09-26, 13:59:38.186473: <debug> (0x0000700002164000) [PJSIP] tlsc0x7f90d706d428 TLS transport 192.168.86.95:62615 is connecting to songbird.sip.server:5061...
2019-09-26, 13:59:38.186550: <debug> (0x0000700002164000) [PJSIP] pjsua_acc.c Contact for acc 0 updated: <sip:2e8f04b6-dc64-4fdf-8e8b-5e034246df4d@192.168.86.95:62615;transport=TLS;ob>;reg-id=1;+sip.instance="<urn:uuid:00000000-0000-0000-0000-000062a2dee5>"
2019-09-26, 13:59:38.188984: <debug> (0x0000700002164000) [PJSIP] pjsua_core.c TX 774 bytes Request msg REGISTER/cseq=36644 (tdta0x7f90d58018a8) to TLS www.xxx.yyy.zzz:5061:
REGISTER sip:songbird.sip.server SIP/2.0
Via: SIP/2.0/TLS 192.168.86.95:62615;rport;branch=z9hG4bKPjB75FE879-DFF6-4FC2-AA8A-C1A89D5E2496;alias
Route: <sip:songbird.sip.server;transport=tls;lr>
Max-Forwards: 70
From: <sip:2e8f04b6-dc64-4fdf-8e8b-5e034246df4d@songbird.sip.server>;tag=9FBBCCE5-7560-4737-B33E-4FFEE66BEC8C
To: <sip:2e8f04b6-dc64-4fdf-8e8b-5e034246df4d@songbird.sip.server>
Call-ID: C8D621A4-E35F-4D18-9373-9BC10CE1DC02
CSeq: 36644 REGISTER
Supported: outbound, path
Contact: <sip:2e8f04b6-dc64-4fdf-8e8b-5e034246df4d@192.168.86.95:62615;transport=TLS;ob>;reg-id=1;+sip.instance="<urn:uuid:00000000-0000-0000-0000-000062a2dee5>"
Expires: 300
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS
Content-Length: 0
--end msg--
2019-09-26, 13:59:38.189086: <debug> (0x0000700002164000) [PJSIP] pjsua_acc.c Acc 0: Registration sent
2019-09-26, 13:59:38.201446: <info> (0x0000700002164000) [PJSIP] tlsc0x7f90d706d428 TLS connect() error: [code=70006]: Not found (PJ_ENOTFOUND)
2019-09-26, 13:59:38.201536: <info> (0x0000700002164000) [PJSIP] tsx0x7f90d78038a8 Temporary failure in sending Request msg REGISTER/cseq=36644 (tdta0x7f90d58018a8), will try next server: Not found (PJ_ENOTFOUND)
2019-09-26, 13:59:38.201614: <debug> (0x0000700002164000) [PJSIP] pjsua_core.c TX 774 bytes Request msg REGISTER/cseq=36644 (tdta0x7f90d58018a8) to TLS www.xxx.yyy.zzz:5061:
REGISTER sip:songbird.sip.server SIP/2.0
Via: SIP/2.0/TLS 192.168.86.95:62615;rport;branch=z9hG4bKPjB75FE879-DFF6-4FC2-AA8A-C1A89D5E2496;alias
Route: <sip:songbird.sip.server;transport=tls;lr>
Max-Forwards: 70
From: <sip:2e8f04b6-dc64-4fdf-8e8b-5e034246df4d@songbird.sip.server>;tag=9FBBCCE5-7560-4737-B33E-4FFEE66BEC8C
To: <sip:2e8f04b6-dc64-4fdf-8e8b-5e034246df4d@songbird.sip.server>
Call-ID: C8D621A4-E35F-4D18-9373-9BC10CE1DC02
CSeq: 36644 REGISTER
Supported: outbound, path
Contact: <sip:2e8f04b6-dc64-4fdf-8e8b-5e034246df4d@192.168.86.95:62615;transport=TLS;ob>;reg-id=1;+sip.instance="<urn:uuid:00000000-0000-0000-0000-000062a2dee5>"
Expires: 300
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS
Content-Length: 0
--end msg--
2019-09-26, 13:59:38.201729: <debug> (0x0000700002164000) [PJSIP] pjsua_acc.c Disconnected notification for transport tlsc0x7f90d706d428
2019-09-26, 13:59:38.201781: <debug> (0x0000700002164000) [PJSIP] sip_transport.c Transport tlsc0x7f90d706d428 shutting down, force=0
2019-09-26, 13:59:38.201839: <debug> (0x0000700002164000) [PJSIP] pjsua_acc.c Scheduling re-registration retry for acc 0 in 309 seconds..
2019-09-26, 13:59:38.201891: <info> (0x0000700002164000) [PJSIP] tsx0x7f90d78038a8 Failed to send Request msg REGISTER/cseq=36644 (tdta0x7f90d58018a8)! err=70006 (Not found (PJ_ENOTFOUND))
2019-09-26, 13:59:38.201928: <warn> (0x0000700002164000) [PJSIP] pjsua_acc.c SIP registration failed, status=503 (Not found (PJ_ENOTFOUND))
2019-09-26, 13:59:38.201957: <debug> (0x0000700002164000) [PJSIP] pjsua_acc.c Scheduling re-registration retry for acc 0 in 306 seconds..
2019-09-26, 13:59:38.202053: <debug> (0x0000700002164000) [PJSIP] tlsc0x7f90d706d428 TLS transport destroyed with reason 70006: Not found (PJ_ENOTFOUND)