2021-05-07 14:09:31.538353+0800 Hello[1986:2515251] [] nw_path_evaluator_create_flow_inner NECP_CLIENT_ACTION_ADD_FLOW 0A158B95-F5ED-4E9B-8D68-4BDC211744F9 [48: Address already in use] 2021-05-07 14:09:31.538839+0800 Hello[1986:2515251] [connection] nw_endpoint_flow_setup_channel [C16.1 123.125.102.213:5222 in_progress channel-flow (satisfied (Path is satisfied), interface: en0, scoped, ipv4, dns)] failed to request add nexus flow 2021-05-07 14:09:31.541714+0800 Hello[1986:2515251] [] nw_path_evaluator_create_flow_inner NECP_CLIENT_ACTION_ADD_FLOW 81D30F6B-0642-49B1-A0F4-C756CA26B1F9 [48: Address already in use] 2021-05-07 14:09:31.541917+0800 Hello[1986:2515251] [connection] nw_endpoint_flow_setup_channel [C16.2 123.125.102.213:5222 in_progress channel-flow (satisfied (Path is satisfied), interface: en0, scoped, ipv4, dns)] failed to request add nexus flow 2021-05-07 14:09:31.543370+0800 Hello[1986:2515251] [] nw_socket_copy_fd_wrapper called with null protocol 2021-05-07 14:09:31.546335+0800 Hello[1986:2515251] [] nw_socket_copy_fd_wrapper called with null protocol, dumping backtrace: [arm64] libnetcore-2288.100.111 0 libnetwork.dylib 0x00000001a9ac3c9c __nw_create_backtrace_string + 120 1 libnetwork.dylib 0x00000001a97199f0 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 2951664 2 libnetwork.dylib 0x00000001a948b624 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 271908 3 libnetwork.dylib 0x00000001a98b2ab4 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 4627124 4 libnetwork.dylib 0x00000001a973d17c 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 3096956 5 libnetwork.dylib 0x00000001a946862c 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 128556 6 libnetwork.dylib 0x00000001a9463f58 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 110424 7 libnetwork.dylib 0x00000001a9471220 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 164384 8 libnetwork.dylib 0x00000001a956c694 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 1193620 9 libnetwork.dylib 0x00000001a95748e0 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 1226976 10 libnetwork.dylib 0x00000001a98f25a4 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 4887972 11 libdispatch.dylib 0x0000000123e3c064 _dispatch_call_block_and_release + 32 12 libdispatch.dylib 0x0000000123e3dd90 _dispatch_client_callout + 20 13 libdispatch.dylib 0x0000000123e45ea0 _dispatch_lane_serial_drain + 788 14 libdispatch.dylib 0x0000000123e46cf8 _dispatch_lane_invoke + 496 15 libdispatch.dylib 0x0000000123e482d4 _dispatch_workloop_invoke + 2200 16 libdispatch.dylib 0x0000000123e53a00 _dispatch_workloop_worker_thread + 1600 17 libsystem_pthread.dylib 0x00000001f43d27a4 _pthread_wqthread + 276 18 libsystem_pthread.dylib 0x00000001f43d974c start_wqthread + 8 2021-05-07 14:09:31.547856+0800 Hello[1986:2515251] [] nw_endpoint_flow_enable_sleep_proxy_if_needed Handler is in mode fallback, expected flow 2021-05-07 14:09:31.548467+0800 Hello[1986:2515251] [] nw_endpoint_flow_enable_sleep_proxy_if_needed Handler is in mode fallback, expected flow, dumping backtrace: [arm64] libnetcore-2288.100.111 0 libnetwork.dylib 0x00000001a9ac3c9c __nw_create_backtrace_string + 120 1 libnetwork.dylib 0x00000001a948bdbc 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 273852 2 libnetwork.dylib 0x00000001a948b644 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 271940 3 libnetwork.dylib 0x00000001a98b2ab4 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 4627124 4 libnetwork.dylib 0x00000001a973d17c 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 3096956 5 libnetwork.dylib 0x00000001a946862c 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 128556 6 libnetwork.dylib 0x00000001a9463f58 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 110424 7 libnetwork.dylib 0x00000001a9471220 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 164384 8 libnetwork.dylib 0x00000001a956c694 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 1193620 9 libnetwork.dylib 0x00000001a95748e0 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 1226976 10 libnetwork.dylib 0x00000001a98f25a4 816831DE-EE04-35F8-A76C-F90DAA7B1AE6 + 4887972 11 libdispatch.dylib 0x0000000123e3c064 _dispatch_call_block_and_release + 32 12 libdispatch.dylib 0x0000000123e3dd90 _dispatch_client_callout + 20 13 libdispatch.dylib 0x0000000123e45ea0 _dispatch_lane_serial_drain + 788 14 libdispatch.dylib 0x0000000123e46cf8 _dispatch_lane_invoke + 496 15 libdispatch.dylib 0x0000000123e482d4 _dispatch_workloop_invoke + 2200 16 libdispatch.dylib 0x0000000123e53a00 _dispatch_workloop_worker_thread + 1600 17 libsystem_pthread.dylib 0x00000001f43d27a4 _pthread_wqthread + 276 18 libsystem_pthread.dylib 0x00000001f43d974c start_wqthread + 8 2021-05-07 14:09:31.549353+0800 Hello[1986:2515251] [connection] nw_endpoint_handler_copy_flow [C16 123.125.102.213:5222 failed fallback (satisfied (Path is satisfied), viable, interface: en0, scoped, ipv4, dns)] Endpoint handler is fallback, not a flow (lldb) thread info thread #6: tid = 0x266133, 0x00000001a9469054 libnetwork.dylib`nw_endpoint_flow_copy_path + 44, queue = 'com.apple.network.connection-16', stop reason = EXC_BAD_ACCESS (code=1, address=0x10) (lldb) thread backtrace * thread #6, queue = 'com.apple.network.connection-16', stop reason = EXC_BAD_ACCESS (code=1, address=0x10) * frame #0: 0x00000001a9469054 libnetwork.dylib`nw_endpoint_flow_copy_path + 44 frame #1: 0x00000001a948b66c libnetwork.dylib`nw_endpoint_flow_connected + 320 frame #2: 0x00000001a98b2ab4 libnetwork.dylib`nw_flow_connected + 3668 frame #3: 0x00000001a973d17c libnetwork.dylib`nw_socket_connect + 584 frame #4: 0x00000001a946862c libnetwork.dylib`nw_endpoint_flow_connect + 164 frame #5: 0x00000001a9463f58 libnetwork.dylib`nw_endpoint_flow_setup_protocols + 3272 frame #6: 0x00000001a9471220 libnetwork.dylib`-[NWConcrete_nw_endpoint_flow startWithHandler:] + 3616 frame #7: 0x00000001a956c694 libnetwork.dylib`nw_endpoint_handler_path_change + 10592 frame #8: 0x00000001a95748e0 libnetwork.dylib`nw_endpoint_handler_start + 1184 frame #9: 0x00000001a98f25a4 libnetwork.dylib`__nw_connection_start_block_invoke + 1460 frame #10: 0x0000000123e3c064 libdispatch.dylib`_dispatch_call_block_and_release + 32 frame #11: 0x0000000123e3dd90 libdispatch.dylib`_dispatch_client_callout + 20 frame #12: 0x0000000123e45ea0 libdispatch.dylib`_dispatch_lane_serial_drain + 788 frame #13: 0x0000000123e46cf8 libdispatch.dylib`_dispatch_lane_invoke + 496 frame #14: 0x0000000123e482d4 libdispatch.dylib`_dispatch_workloop_invoke + 2200 frame #15: 0x0000000123e53a00 libdispatch.dylib`_dispatch_workloop_worker_thread + 1600 frame #16: 0x00000001f43d27a4 libsystem_pthread.dylib`_pthread_wqthread + 276 (lldb)