HTTP/1.1 400 Bad Request
Content-Type: text/plain; charset=utf-8
Sec-Websocket-Version: 13
X-Content-Type-Options: nosniff
Date: Wed, 25 Sep 2024 13:27:16 GMT
Content-Length: 12

HTTP/1.1 502 Bad Gateway
Date: Mon, 16 Sep 2024 20:13:40 GMT
Content-Type: text/html
Content-Length: 568
Connection: keep-alive
Via: HTTP/1.1 SLB.168

Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            0e:87:bb:42:4b:37:fb:be:aa:1a:d4:e0:d7:61:29:ec
        Signature Algorithm: sha256WithRSAEncryption
        Issuer: C=US, O=DigiCert Inc, CN=DigiCert Basic RSA CN CA G2
        Validity
            Not Before: Jan 15 00:00:00 2024 GMT
            Not After : Feb 11 23:59:59 2025 GMT
        Subject: C=CN, ST=\xE5\x8C\x97\xE4\xBA\xAC\xE5\xB8\x82, O=\xE5\x8C\x97\xE4\xBA\xAC\xE5\xA4\xA7\xE7\xB1\xB3\xE7\xA7\x91\xE6\x8A\x80\xE6\x9C\x89\xE9\x99\x90\xE5\x85\xAC\xE5\x8F\xB8, CN=*.vipkidteachers.com
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (2048 bit)
                Modulus:
                    00:ad:ba:97:51:3c:58:76:48:b9:99:06:e4:38:e8:
                    e6:78:49:32:2e:af:14:ae:e7:ef:fd:9c:e8:40:16:
                    4c:25:c9:48:1c:e4:42:36:72:4c:09:ae:09:79:c1:
                    46:48:c8:d0:0e:f2:cf:39:b4:3d:c2:fc:96:0e:c6:
                    f2:ba:19:ff:6a:65:27:19:bc:a9:90:16:d6:3a:5a:
                    88:0c:23:de:8f:9b:c6:9d:88:7d:2d:ec:4f:6b:f9:
                    d6:56:d9:9e:df:1e:50:da:bc:ca:e5:6a:56:14:de:
                    a3:31:9f:e5:89:6a:fa:a5:5d:03:8d:22:56:12:8a:
                    50:f7:95:35:d3:e3:31:ea:66:3d:0a:2c:3d:16:f6:
                    dc:b5:d9:0a:91:82:98:57:f5:f5:52:5b:24:ad:1f:
                    ae:d1:58:e4:b8:31:7b:55:92:e8:a6:84:ed:f4:6d:
                    fc:1a:5a:20:d3:b7:10:c2:15:bf:46:5d:f7:4c:16:
                    6a:1e:f3:ec:7c:4b:3d:f8:2f:e5:2b:d4:bd:8c:4e:
                    45:00:28:a3:ef:d5:a2:22:a1:6c:35:69:7a:51:4f:
                    7e:79:86:ad:56:f5:a7:ed:47:f2:d7:7d:f3:16:d7:
                    9c:bf:5d:a0:2a:8d:42:93:14:c8:ad:c9:b2:9a:7e:
                    93:7d:b6:c7:3c:89:9b:d1:c2:e8:b1:64:8f:fe:3f:
                    05:51
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Authority Key Identifier: 
                06:BD:A6:9B:60:79:50:31:BE:D5:A9:02:4A:A0:D0:95:53:8B:2F:34
            X509v3 Subject Key Identifier: 
                79:C2:19:B6:47:1A:C9:0D:E7:3B:1C:30:11:A9:7B:4C:3C:9A:21:1D
            X509v3 Subject Alternative Name: 
                DNS:*.vipkidteachers.com, DNS:vipkidteachers.com, DNS:*.vipkid.com.cn, DNS:vipkid.com.cn, DNS:*.vipkidedu.com, DNS:vipkidedu.com, DNS:*.vipkid.com, DNS:vipkid.com, DNS:*.vipkidcdn.com, DNS:vipkidcdn.com, DNS:*.uc.vipkid.com.cn, DNS:uc.vipkid.com.cn, DNS:*.lingobus.com, DNS:lingobus.com, DNS:*.vipkidresource.com, DNS:vipkidresource.com, DNS:*.vipkidstatic.com, DNS:vipkidstatic.com, DNS:*.meiguoxiaoxue.com, DNS:meiguoxiaoxue.com, DNS:*.vipkid-qa.com.cn, DNS:vipkid-qa.com.cn
            X509v3 Certificate Policies: 
                Policy: 2.23.140.1.2.2
                  CPS: http://www.digicert.com/CPS
            X509v3 Key Usage: critical
                Digital Signature, Key Encipherment
            X509v3 Extended Key Usage: 
                TLS Web Server Authentication, TLS Web Client Authentication
            X509v3 CRL Distribution Points: 
                Full Name:
                  URI:http://crl.digicert.cn/DigiCertBasicRSACNCAG2.crl
            Authority Information Access: 
                OCSP - URI:http://ocsp.digicert.cn
                CA Issuers - URI:http://cacerts.digicert.cn/DigiCertBasicRSACNCAG2.crt
            X509v3 Basic Constraints: critical
                CA:FALSE
            CT Precertificate SCTs: 
                Signed Certificate Timestamp:
                    Version   : v1 (0x0)
                    Log ID    : 4E:75:A3:27:5C:9A:10:C3:38:5B:6C:D4:DF:3F:52:EB:
                                1D:F0:E0:8E:1B:8D:69:C0:B1:FA:64:B1:62:9A:39:DF
                    Timestamp : Jan 15 01:55:03.465 2024 GMT
                    Extensions: none
                    Signature : ecdsa-with-SHA256
                                30:46:02:21:00:80:E7:15:21:8F:E2:D3:9A:9B:D8:36:
                                84:D9:64:80:1C:11:72:73:5F:8A:BB:B6:79:A1:BF:15:
                                E0:B8:49:C4:CA:02:21:00:9B:6B:3F:2E:CA:CD:BD:5F:
                                1D:10:E0:D5:CD:A9:2E:62:CF:06:2A:51:95:82:75:6C:
                                92:A5:FF:51:18:7B:D2:F6
                Signed Certificate Timestamp:
                    Version   : v1 (0x0)
                    Log ID    : E6:D2:31:63:40:77:8C:C1:10:41:06:D7:71:B9:CE:C1:
                                D2:40:F6:96:84:86:FB:BA:87:32:1D:FD:1E:37:8E:50
                    Timestamp : Jan 15 01:55:03.500 2024 GMT
                    Extensions: none
                    Signature : ecdsa-with-SHA256
                                30:45:02:20:1C:22:04:59:51:9F:4C:97:F1:34:AD:DD:
                                C4:A9:DE:29:C3:F2:7E:79:F1:69:1B:6B:94:DE:A9:EE:
                                1A:6C:3E:16:02:21:00:B0:F3:97:9D:6D:FB:F9:8E:54:
                                A7:05:BF:5C:37:88:EC:D1:C4:01:C6:DE:04:A6:73:94:
                                55:00:3E:D2:19:BF:D0
                Signed Certificate Timestamp:
                    Version   : v1 (0x0)
                    Log ID    : CF:11:56:EE:D5:2E:7C:AF:F3:87:5B:D9:69:2E:9B:E9:
                                1A:71:67:4A:B0:17:EC:AC:01:D2:5B:77:CE:CC:3B:08
                    Timestamp : Jan 15 01:55:03.496 2024 GMT
                    Extensions: none
                    Signature : ecdsa-with-SHA256
                                30:45:02:20:74:41:40:38:7A:3B:FE:4E:38:0F:3F:EB:
                                E9:51:EA:E1:94:E6:57:40:F3:6C:2E:60:91:81:64:B8:
                                35:BF:30:19:02:21:00:B2:52:36:AB:E6:36:85:9C:5B:
                                BC:81:88:B6:59:25:0B:D1:24:D7:0E:E2:A7:C1:15:43:
                                27:BB:78:F7:83:56:5F
    Signature Algorithm: sha256WithRSAEncryption
    Signature Value:
        4d:9f:81:97:ed:eb:8f:2b:ff:53:98:7f:c4:2c:0f:b8:d9:ea:
        77:f6:07:f4:5b:27:4a:9f:c7:07:71:86:b3:e9:1e:f4:a2:f1:
        69:88:f3:a7:89:a9:24:4e:8b:4e:c3:85:dd:c9:38:0f:d3:aa:
        e7:43:38:9a:2d:26:ab:9c:e5:d3:3a:33:19:cb:99:02:18:84:
        86:1f:46:68:0e:57:84:35:a8:3b:d1:ac:89:5e:0c:93:84:0f:
        45:0e:dd:04:b0:8e:e7:27:cd:67:f3:82:3d:9a:e6:7c:10:1e:
        7d:cc:cb:06:ad:a7:32:a8:46:15:a8:14:6e:a7:cc:8c:9e:3f:
        56:a2:7e:e2:6d:f5:2c:65:aa:ac:85:11:92:de:25:d3:8e:f9:
        24:0c:41:95:47:da:17:3d:a9:2c:67:52:29:10:15:cc:4e:f7:
        62:3c:81:31:7a:ed:3e:14:f5:13:ac:42:17:76:9e:c9:14:67:
        72:0a:3f:a7:e2:12:3d:18:0b:9a:95:11:96:6f:86:04:f2:8a:
        05:32:d6:c2:ed:4f:8d:ed:a5:36:a4:36:f0:86:4c:0b:64:42:
        bf:84:84:3b:fc:09:35:ef:cd:9a:24:6a:de:69:b1:cd:16:4e:
        2e:6f:1a:ae:a4:54:ec:e1:b0:b7:3f:93:94:59:9f:56:9c:55:
        00:90:be:8d