opevpn2.6 "auth_pending_file" cannot be generated during authentication

server: Centos7 OpenVPN 2.6
client: Win10 OpenVPN GUI 11.37.0.0/2.6.0

I am implementing totp using totpauth.py, but I have been unsuccessful, and when I use the client for validation, the server keeps pending and the client doesn't respond

server config：

port 1194 proto tcp dev tun mode server ca server/ca.crt cert openvpn.crt key openvpn.key dh dh.pem tls-auth ta.key

tmp-dir /etc/openvpn/tmp server 10.8.0.0 255.255.255.0 push "route 192.168.10.0 255.255.255.0" push "route 192.168.20.0 255.255.255.0" route 192.168.40.128 255.255.255.248 push "redirect-gateway def1 bypass-dhcp" push "dhcp-option DNS 208.67.222.222" push "dhcp-option DNS 208.67.220.220"

duplicate-cn keepalive 10 120 cipher AES-256-CBC comp-lzo

user root group root

persist-key persist-tun

status openvpn-status.log log openvpn.log verb 3

mute 20 script-security 3

client-crresponse /etc/openvpn/script/totpauth.py auth-user-pass-verify /etc/openvpn/script/totpauth.py via-file auth-user-pass-optional auth-gen-token 60 120

client config：

client remote 192.168.197.104 port 1194 proto tcp dev tun

keepalive 10 120

persist-key persist-tun cipher AES-256-CBC comp-lzo nobind verb 1

status client-status.log route-method exe route-delay 2

auth-user-pass

-----BEGIN CERTIFICATE----- MIIDITCCAgmgAwIBAgIJAPOmjFS0Yl/rMA0GCSqGSIb3DQEBCwUAMBAxDjAMBgNV BAMMBWxnbWNmMB4XDTIyMTEwMzE0Mjk1MloXDTQzMDUxNzE0Mjk1MlowEDEOMAwG A1UEAwwFbGdtY2YwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDj84z1 MRG+K5xsP4HsErddIHF8kCBbMcy57O04cANF93znnYK/mQ5OzP4rAkBLULS5ive0 mecBry0GVwJIlnCYXB6IU9EdPzQFTRVAA9J93v9jeuL1cXq2G6Y+VuXvS7PeHeIh oYE1TFS2qZ+PU0XxN916M9SswLlxS7m9GMuGKnCOLs3Udfn2nmyN+TRttWQTIHjC buklHaUx0uLtjTFCx3nNwqWuum22LK9luuuDjc2AA578M3PiEotwbouHD39wF241 rftKC3VpOSbnyY/DGt8eroeaZcXyzWHVbG2nllXI05dXA9nso71PzHgHtH3VbI15 dXT+n7HLRv4nYVIvAgMBAAGjfjB8MB0GA1UdDgQWBBSi0oh2wasXwVh1r8KRCLT0 uHxKeDBABgNVHSMEOTA3gBSi0oh2wasXwVh1r8KRCLT0uHxKeKEUpBIwEDEOMAwG A1UEAwwFbGdtY2aCCQDzpoxUtGJf6zAMBgNVHRMEBTADAQH/MAsGA1UdDwQEAwIB BjANBgkqhkiG9w0BAQsFAAOCAQEAlmqwyjgKPE2n1a+lVXhlMDBT0o6vUkAUUTpU MgWmaNu4f7E9vjlyEG19wW3rRmzffQ5hwoOF+rWBN89GPgbqAzT315scnEc2M5U2 RIfR8AK5oRHZPqogdScg7MpPF9VbbW7jGgNslaQhTRFVmyIL2NKRf33NCEVwPq37 N7LL5CJYDewN9CM3ZAcLZRI/KKt2Snapod+37TFSlzekLUy/CvpalMghmkU8qkRb QDBK0R8Q5hG1OrBx0SqV1gWxjWgUE1W4Jr4Y3nqXCpbmRv6R0kpmX0tpW5OQY/5z RjF2e3GJkvSzz+wK9mYYMfnG8wqVS48OXDNPL+u9lI4MxZPEEg== -----END CERTIFICATE----- Certificate: Data: Version: 3 (0x2) Serial Number: 38:1b:78:30:e4:e6:f9:c9:85:ea:9a:e8:9a:5e:a1:1a Signature Algorithm: sha256WithRSAEncryption Issuer: CN=lgmcf Validity Not Before: Nov 3 14:34:43 2022 GMT Not After : Oct 31 14:34:43 2032 GMT Subject: CN=client Subject Public Key Info: Public Key Algorithm: rsaEncryption Public-Key: (2048 bit) Modulus: 00:bf:54:b6:3f:d5:93:e8:21:c1:7d:6c:8b:bb:ce: f7:e8:83:d2:c8:a4:6e:7a:2f:d5:be:37:7e:95:00: 43:6a:f5:94:bc:bd:8f:b7:9d:43:39:ac:f7:c9:bd: 87:94:48:af:ce:37:35:2d:a9:4d:30:df:db:52:8d: f1:bb:a5:f2:7d:e6:ff:f6:f5:a7:75:f3:f0:e6:d9: 99:04:72:98:95:20:22:c4:bf:78:be:57:34:8c:e6: 15:86:64:a1:a7:64:fb:1d:3b:20:b8:df:ef:63:79: e8:d0:f7:7c:63:2a:8f:85:e2:7e:6d:18:a5:34:37: 66:14:60:e9:fc:9c:30:6b:be:cb:39:5c:1a:58:1c: fc:2b:76:2d:9b:0f:c2:c5:f7:6b:1f:14:8e:89:96: 0b:64:ad:b6:d6:ea:e6:4c:f1:4a:f6:9c:85:9f:c3: b1:d8:c0:16:8b:4a:24:e5:18:9c:8a:b9:ed:1d:63: 30:10:49:b8:e6:2a:8a:66:a4:74:6e:7b:26:c7:5f: 46:29:d7:17:42:04:65:1d:c8:52:b8:38:76:ee:c9: c0:96:a8:b2:bc:6c:ed:29:13:35:f4:c4:14:ec:14: 91:52:48:00:2e:10:c1:ed:11:9c:84:35:9a:b1:18: 1e:bc:38:ee:43:27:bb:f4:9e:3c:b6:60:70:93:7a: 2e:ab Exponent: 65537 (0x10001) X509v3 extensions: X509v3 Basic Constraints: CA:FALSE X509v3 Subject Key Identifier: 1F:4F:E0:20:DA:F8:54:31:2F:B4:ED:9B:7D:19:88:B0:73:13:C0:2B X509v3 Authority Key Identifier: keyid:A2:D2:88:76:C1:AB:17:C1:58:75:AF:C2:91:08:B4:F4:B8:7C:4A:78 DirName:/CN=lgmcf serial:F3:A6:8C:54:B4:62:5F:EB X509v3 Extended Key Usage: TLS Web Client Authentication X509v3 Key Usage: Digital Signature Signature Algorithm: sha256WithRSAEncryption d0:ba:88:51:62:67:43:6e:63:ec:fe:b8:d9:94:e3:0c:e8:f2: d0:f7:8d:77:19:e2:b0:a4:1c:54:de:60:96:fb:f0:d1:38:97: 8b:5d:0e:b4:ae:a2:cb:12:8a:87:60:c4:b1:ee:65:56:00:28: 51:fb:0f:ce:db:4b:8a:80:70:99:d5:f2:c9:b9:de:e4:00:6f: 9b:36:f3:0f:f5:27:62:7a:64:78:d9:27:73:2e:88:2b:c1:7c: 5b:13:60:ed:98:52:40:81:27:d0:95:b2:6c:7f:96:b4:93:e2: 44:80:91:f2:b2:dd:21:2d:56:bf:fb:5d:57:6e:ea:7d:0f:e7: c9:f8:ed:3e:db:09:e9:17:77:eb:ca:fd:c2:b4:0f:3c:04:d2: b3:15:a8:7b:c1:28:99:31:6d:2d:11:bb:50:2a:e9:97:25:70: 3f:2e:ce:40:bb:87:98:da:ac:2a:20:48:5e:78:06:fc:a1:e5: 91:c6:ed:8b:e2:1b:eb:c4:53:75:ac:06:c6:fa:d3:8e:dc:ab: af:3b:a8:b7:29:64:82:af:fe:ba:29:58:1a:11:59:71:17:f4: 20:71:eb:0f:c7:75:45:58:85:a1:06:72:05:63:66:9f:22:94: 2d:08:56:b8:37:61:19:2c:00:bd:5c:d0:2a:3c:18:66:86:7b: 4c:bd:6f:8c -----BEGIN CERTIFICATE----- MIIDPTCCAiWgAwIBAgIQOBt4MOTm+cmF6proml6hGjANBgkqhkiG9w0BAQsFADAQ MQ4wDAYDVQQDDAVsZ21jZjAeFw0yMjExMDMxNDM0NDNaFw0zMjEwMzExNDM0NDNa MBExDzANBgNVBAMMBmNsaWVudDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoC ggEBAL9Utj/Vk+ghwX1si7vO9+iD0sikbnov1b43fpUAQ2r1lLy9j7edQzms98m9 h5RIr843NS2pTTDf21KN8bul8n3m//b1p3Xz8ObZmQRymJUgIsS/eL5XNIzmFYZk oadk+x07ILjf72N56ND3fGMqj4Xifm0YpTQ3ZhRg6fycMGu+yzlcGlgc/Ct2LZsP wsX3ax8UjomWC2Stttbq5kzxSvachZ/DsdjAFotKJOUYnIq57R1jMBBJuOYqimak dG57JsdfRinXF0IEZR3IUrg4du7JwJaosrxs7SkTNfTEFOwUkVJIAC4Qwe0RnIQ1 mrEYHrw47kMnu/SePLZgcJN6LqsCAwEAAaOBkTCBjjAJBgNVHRMEAjAAMB0GA1Ud DgQWBBQfT+Ag2vhUMS+07Zt9GYiwcxPAKzBABgNVHSMEOTA3gBSi0oh2wasXwVh1 r8KRCLT0uHxKeKEUpBIwEDEOMAwGA1UEAwwFbGdtY2aCCQDzpoxUtGJf6zATBgNV HSUEDDAKBggrBgEFBQcDAjALBgNVHQ8EBAMCB4AwDQYJKoZIhvcNAQELBQADggEB ANC6iFFiZ0NuY+z+uNmU4wzo8tD3jXcZ4rCkHFTeYJb78NE4l4tdDrSuossSiodg xLHuZVYAKFH7D87bS4qAcJnV8sm53uQAb5s28w/1J2J6ZHjZJ3MuiCvBfFsTYO2Y UkCBJ9CVsmx/lrST4kSAkfKy3SEtVr/7XVdu6n0P58n47T7bCekXd+vK/cK0DzwE 0rMVqHvBKJkxbS0Ru1Aq6ZclcD8uzkC7h5jarCogSF54Bvyh5ZHG7YviG+vEU3Ws Bsb6047cq687qLcpZIKv/ropWBoRWXEX9CBx6w/HdUVYhaEGcgVjZp8ilC0IVrg3 YRksAL1c0Co8GGaGe0y9b4w= -----END CERTIFICATE----- -----BEGIN PRIVATE KEY----- MIIEvwIBADANBgkqhkiG9w0BAQEFAASCBKkwggSlAgEAAoIBAQC/VLY/1ZPoIcF9 bIu7zvfog9LIpG56L9W+N36VAENq9ZS8vY+3nUM5rPfJvYeUSK/ONzUtqU0w39tS 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3b1aecd219d2c0f324f82b887e69f4e7 2120f55acd755818023eaafa1e0cd7df 4dc96797fe80174cd86815bd5615fee0 d47fcc7fbe483cb3897cf2e6c97dc4ad e869c2da52428b2e3aa207ec47f2c1e4 415b79b480944efb630f26ade1cc0616 -----END OpenVPN Static key V1-----

There is no 'auth_pending_file' in the actual tmp file

OpenVPN / openvpn-gui

opevpn2.6 "auth_pending_file" cannot be generated during authentication #610

server config：

client config：