Serial LTE Modem HTTPS connect returned error 22

[Kingfisher]

We are running the SLM application (build with native TLS overlay) on the nRF9160 DK with modem firmware version mfw_nrf9160_1.3.1.

Please take notice I tried the HTTPS client sample earlier and it worked well.

The root CA is set with the AT#XCMNG command at sectag 10.

AT#XHTTPCCON=1,"example.com",443,10

returned ERROR

RTT log shows the following:

00> [00:00:00.445,953] <dbg> nrf_modem: _nrf_modem_lib_init: Modem library has initialized, ret 0
00> [00:00:00.445,983] <dbg> nrf_modem: _nrf_modem_lib_init: Modem init callback: 0x5c0fb
00> [00:00:00.447,082] <dbg> nrf_modem: _nrf_modem_lib_init: Modem init callback: 0x3bea5
00> [00:00:00.447,113] <dbg> nrf_modem: _nrf_modem_lib_init: Modem init callback: 0x21e71
00> [00:00:00.447,113] <dbg> nrf_modem: _nrf_modem_lib_init: Modem init callback: 0x5bb27
00> [00:00:00.447,235] <inf> nrf_modem_lib_trace: Trace thread ready
00> [00:00:00.448,547] <inf> nrf_modem_lib_trace: Trace level override: 2
00> [00:00:00.452,087] <dbg> net_core: net_init: (0x20015108): Priority 90
00> [00:00:00.452,117] <dbg> net_core: l3_init: (0x20015108): Network L3 init done
00> [00:00:00.452,117] <dbg> net_if: net_if_init: (0x20015108): 
00> [00:00:00.452,148] <dbg> net_if: init_iface: (0x20015108): On iface 0x200127cc
00> [00:00:00.452,178] <dbg> net_if: net_if_post08): 
00> 
00> [00:02:29.603,149] <wrn> modem_key_mgmt: Key not found
00> [00:02:29.604,644] <wrn> modem_key_mgmt: Key not found
00> [00:02:29.604,827] <dbg> net_sock_tls: tls_alloc: (0x200151d8): Allocated TLS context, 0x200158d4
00> [00:02:30.028,503] <err> slm_httpc: connect() failed: -22
00> [00:02:30.028,564] <dbg> net_sock: z_impl_zsock_close: (0x200151d8): close: ctx=0x200158d4, fd=0
00> [00:02:30.028,686] <dbg> net_sock: z_impl_zsock_close: (0x200151d8): close: ctx=0x20016468, fd=1

connect failed with error 22: EINVAL, Invalid argument.

What to do?

[Kingfisher]

I just created a private ticket for the AT#XHTTPCREQ issue.

One question remains: why is loading a certificate using the AT command terminal not working?

[Charlie]

Hi Idsard,

Please check the following process, I write CA from nrf\samples\nrf9160\https_client\cert\DigiCertGlobalRootCA.pem to SEC TAG 10 in this test. Please be realized that you need to delete " and \n" in pem format CA before writing.

2023-02-17T08:53:40.100Z DEBUG modem >> AT+CFUN=4
2023-02-17T08:53:40.120Z DEBUG modem << OK
2023-02-17T08:53:57.834Z DEBUG modem >> AT%CMNG=1
***
2023-02-17T08:53:58.144Z DEBUG modem << OK
2023-02-17T08:56:45.768Z ERROR Unexpected token '/', "/*
 * Ser"... is not valid JSON
2023-02-17T08:57:17.396Z INFO Updating CA certificate...
2023-02-17T08:57:17.396Z DEBUG modem >> AT%CMNG=0,10,0,""-----BEGIN CERTIFICATE-----\n"
2023-02-17T08:57:17.409Z DEBUG modem >> "MIIDrzCCApegAwIBAgIQCDvgVpBCRrGhdWrJWZHHSjANBgkqhkiG9w0BAQUFADBh\n"
2023-02-17T08:57:17.423Z DEBUG modem >> "MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3\n"
2023-02-17T08:57:17.436Z DEBUG modem >> "d3cuZGlnaWNlcnQuY29tMSAwHgYDVQQDExdEaWdpQ2VydCBHbG9iYWwgUm9vdCBD\n"
2023-02-17T08:57:17.449Z DEBUG modem >> "QTAeFw0wNjExMTAwMDAwMDBaFw0zMTExMTAwMDAwMDBaMGExCzAJBgNVBAYTAlVT\n"
2023-02-17T08:57:17.463Z DEBUG modem >> "MRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdpY2VydC5j\n"
2023-02-17T08:57:17.477Z DEBUG modem >> "b20xIDAeBgNVBAMTF0RpZ2lDZXJ0IEdsb2JhbCBSb290IENBMIIBIjANBgkqhkiG\n"
2023-02-17T08:57:17.490Z DEBUG modem >> "9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4jvhEXLeqKTTo1eqUKKPC3eQyaKl7hLOllsB\n"
2023-02-17T08:57:17.503Z DEBUG modem >> "CSDMAZOnTjC3U/dDxGkAV53ijSLdhwZAAIEJzs4bg7/fzTtxRuLWZscFs3YnFo97\n"
2023-02-17T08:57:17.517Z DEBUG modem >> "nh6Vfe63SKMI2tavegw5BmV/Sl0fvBf4q77uKNd0f3p4mVmFaG5cIzJLv07A6Fpt\n"
2023-02-17T08:57:17.530Z DEBUG modem >> "43C/dxC//AH2hdmoRBBYMql1GNXRor5H4idq9Joz+EkIYIvUX7Q6hL+hqkpMfT7P\n"
2023-02-17T08:57:17.543Z DEBUG modem >> "T19sdl6gSzeRntwi5m3OFBqOasv+zbMUZBfHWymeMr/y7vrTC0LUq7dBMtoM1O/4\n"
2023-02-17T08:57:17.556Z DEBUG modem >> "gdW7jVg/tRvoSSiicNoxBN33shbyTApOB6jtSj1etX+jkMOvJwIDAQABo2MwYTAO\n"
2023-02-17T08:57:17.570Z DEBUG modem >> "BgNVHQ8BAf8EBAMCAYYwDwYDVR0TAQH/BAUwAwEB/zAdBgNVHQ4EFgQUA95QNVbR\n"
2023-02-17T08:57:17.584Z DEBUG modem >> "TLtm8KPiGxvDl7I90VUwHwYDVR0jBBgwFoAUA95QNVbRTLtm8KPiGxvDl7I90VUw\n"
2023-02-17T08:57:17.598Z DEBUG modem >> "DQYJKoZIhvcNAQEFBQADggEBAMucN6pIExIK+t1EnE9SsPTfrgT1eXkIoyQY/Esr\n"
2023-02-17T08:57:17.613Z DEBUG modem >> "hMAtudXH/vTBH1jLuG2cenTnmCmrEbXjcKChzUyImZOMkXDiqw8cvpOp/2PV5Adg\n"
2023-02-17T08:57:17.626Z DEBUG modem >> "06O/nVsJ8dWO41P0jmP6P6fbtGbfYmbW0W5BjfIttep3Sp+dWOIrWcBAI+0tKIJF\n"
2023-02-17T08:57:17.638Z DEBUG modem >> "PnlUkiaY4IBIqDfv8NZ5YBberOgOzW6sRBc4L0na4UU+Krk2U886UAb3LujEV0ls\n"
2023-02-17T08:57:17.652Z DEBUG modem >> "YSEY1QSteDwsOoBrp+uvFRTp2InBuThs4pFsiv9kuXclVzDAGySj4dzp30d8tbQk\n"
2023-02-17T08:57:17.665Z DEBUG modem >> "CAUw7C29C79Fv1C5qfPrmAESrciIxpg0X40KPMbp1ZWVbd4=\n"
2023-02-17T08:57:17.679Z DEBUG modem >> "-----END CERTIFICATE-----\n""
2023-02-17T08:57:17.707Z DEBUG modem << +CME ERROR: 50
2023-02-17T08:57:17.714Z ERROR Error: AT%CMNG=0,10,0,""-----BEGIN CERTIFICATE-----\n"
"MIIDrzCCApegAwIBAgIQCDvgVpBCRrGhdWrJWZHHSjANBgkqhkiG9w0BAQUFADBh\n"
"MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3\n"
"d3cuZGlnaWNlcnQuY29tMSAwHgYDVQQDExdEaWdpQ2VydCBHbG9iYWwgUm9vdCBD\n"
"QTAeFw0wNjExMTAwMDAwMDBaFw0zMTExMTAwMDAwMDBaMGExCzAJBgNVBAYTAlVT\n"
"MRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdpY2VydC5j\n"
"b20xIDAeBgNVBAMTF0RpZ2lDZXJ0IEdsb2JhbCBSb290IENBMIIBIjANBgkqhkiG\n"
"9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4jvhEXLeqKTTo1eqUKKPC3eQyaKl7hLOllsB\n"
"CSDMAZOnTjC3U/dDxGkAV53ijSLdhwZAAIEJzs4bg7/fzTtxRuLWZscFs3YnFo97\n"
"nh6Vfe63SKMI2tavegw5BmV/Sl0fvBf4q77uKNd0f3p4mVmFaG5cIzJLv07A6Fpt\n"
"43C/dxC//AH2hdmoRBBYMql1GNXRor5H4idq9Joz+EkIYIvUX7Q6hL+hqkpMfT7P\n"
"T19sdl6gSzeRntwi5m3OFBqOasv+zbMUZBfHWymeMr/y7vrTC0LUq7dBMtoM1O/4\n"
"gdW7jVg/tRvoSSiicNoxBN33shbyTApOB6jtSj1etX+jkMOvJwIDAQABo2MwYTAO\n"
"BgNVHQ8BAf8EBAMCAYYwDwYDVR0TAQH/BAUwAwEB/zAdBgNVHQ4EFgQUA95QNVbR\n"
"TLtm8KPiGxvDl7I90VUwHwYDVR0jBBgwFoAUA95QNVbRTLtm8KPiGxvDl7I90VUw\n"
"DQYJKoZIhvcNAQEFBQADggEBAMucN6pIExIK+t1EnE9SsPTfrgT1eXkIoyQY/Esr\n"
"hMAtudXH/vTBH1jLuG2cenTnmCmrEbXjcKChzUyImZOMkXDiqw8cvpOp/2PV5Adg\n"
"06O/nVsJ8dWO41P0jmP6P6fbtGbfYmbW0W5BjfIttep3Sp+dWOIrWcBAI+0tKIJF\n"
"PnlUkiaY4IBIqDfv8NZ5YBberOgOzW6sRBc4L0na4UU+Krk2U886UAb3LujEV0ls\n"
"YSEY1QSteDwsOoBrp+uvFRTp2InBuThs4pFsiv9kuXclVzDAGySj4dzp30d8tbQk\n"
"CAUw7C29C79Fv1C5qfPrmAESrciIxpg0X40KPMbp1ZWVbd4=\n"
"-----END CERTIFICATE-----\n""
 failed: Incorrect parameters
2023-02-17T08:57:17.715Z INFO Certificate update completed
2023-02-17T09:01:03.532Z INFO Updating CA certificate...
2023-02-17T09:01:03.532Z DEBUG modem >> AT%CMNG=0,10,0,"-----BEGIN CERTIFICATE-----
2023-02-17T09:01:03.546Z DEBUG modem >> MIIDrzCCApegAwIBAgIQCDvgVpBCRrGhdWrJWZHHSjANBgkqhkiG9w0BAQUFADBh
2023-02-17T09:01:03.559Z DEBUG modem >> MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
2023-02-17T09:01:03.572Z DEBUG modem >> d3cuZGlnaWNlcnQuY29tMSAwHgYDVQQDExdEaWdpQ2VydCBHbG9iYWwgUm9vdCBD
2023-02-17T09:01:03.586Z DEBUG modem >> QTAeFw0wNjExMTAwMDAwMDBaFw0zMTExMTAwMDAwMDBaMGExCzAJBgNVBAYTAlVT
2023-02-17T09:01:03.600Z DEBUG modem >> MRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdpY2VydC5j
2023-02-17T09:01:03.614Z DEBUG modem >> b20xIDAeBgNVBAMTF0RpZ2lDZXJ0IEdsb2JhbCBSb290IENBMIIBIjANBgkqhkiG
2023-02-17T09:01:03.628Z DEBUG modem >> 9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4jvhEXLeqKTTo1eqUKKPC3eQyaKl7hLOllsB
2023-02-17T09:01:03.641Z DEBUG modem >> CSDMAZOnTjC3U/dDxGkAV53ijSLdhwZAAIEJzs4bg7/fzTtxRuLWZscFs3YnFo97
2023-02-17T09:01:03.654Z DEBUG modem >> nh6Vfe63SKMI2tavegw5BmV/Sl0fvBf4q77uKNd0f3p4mVmFaG5cIzJLv07A6Fpt
2023-02-17T09:01:03.667Z DEBUG modem >> 43C/dxC//AH2hdmoRBBYMql1GNXRor5H4idq9Joz+EkIYIvUX7Q6hL+hqkpMfT7P
2023-02-17T09:01:03.680Z DEBUG modem >> T19sdl6gSzeRntwi5m3OFBqOasv+zbMUZBfHWymeMr/y7vrTC0LUq7dBMtoM1O/4
2023-02-17T09:01:03.694Z DEBUG modem >> gdW7jVg/tRvoSSiicNoxBN33shbyTApOB6jtSj1etX+jkMOvJwIDAQABo2MwYTAO
2023-02-17T09:01:03.707Z DEBUG modem >> BgNVHQ8BAf8EBAMCAYYwDwYDVR0TAQH/BAUwAwEB/zAdBgNVHQ4EFgQUA95QNVbR
2023-02-17T09:01:03.721Z DEBUG modem >> TLtm8KPiGxvDl7I90VUwHwYDVR0jBBgwFoAUA95QNVbRTLtm8KPiGxvDl7I90VUw
2023-02-17T09:01:03.734Z DEBUG modem >> DQYJKoZIhvcNAQEFBQADggEBAMucN6pIExIK+t1EnE9SsPTfrgT1eXkIoyQY/Esr
2023-02-17T09:01:03.750Z DEBUG modem >> hMAtudXH/vTBH1jLuG2cenTnmCmrEbXjcKChzUyImZOMkXDiqw8cvpOp/2PV5Adg
2023-02-17T09:01:03.764Z DEBUG modem >> 06O/nVsJ8dWO41P0jmP6P6fbtGbfYmbW0W5BjfIttep3Sp+dWOIrWcBAI+0tKIJF
2023-02-17T09:01:03.777Z DEBUG modem >> PnlUkiaY4IBIqDfv8NZ5YBberOgOzW6sRBc4L0na4UU+Krk2U886UAb3LujEV0ls
2023-02-17T09:01:03.789Z DEBUG modem >> YSEY1QSteDwsOoBrp+uvFRTp2InBuThs4pFsiv9kuXclVzDAGySj4dzp30d8tbQk
2023-02-17T09:01:03.802Z DEBUG modem >> CAUw7C29C79Fv1C5qfPrmAESrciIxpg0X40KPMbp1ZWVbd4=
2023-02-17T09:01:03.817Z DEBUG modem >> -----END CERTIFICATE-----"
2023-02-17T09:01:03.947Z DEBUG modem << OK
2023-02-17T09:01:03.949Z INFO Certificate update completed
2023-02-17T09:01:37.509Z DEBUG modem >> AT%CMNG=1
2023-02-17T09:01:37.637Z DEBUG modem << %CMNG: 10,0,"80512AE1CC9DA966B984D8D033E8B136E61C69C033BF73896FD21F4BBCA5FED2"
***
2023-02-17T09:01:37.841Z DEBUG modem << OK
2023-02-17T09:01:49.068Z DEBUG modem >> AT+CFUN=1
2023-02-17T09:01:49.113Z DEBUG modem << OK
2023-02-17T09:01:49.764Z DEBUG modem << %XSIM: 1
2023-02-17T09:01:49.811Z DEBUG modem << %CESQ: 70,3,18,2
2023-02-17T09:01:49.835Z DEBUG modem << +CEREG: 2,"7789","031B4300",7
2023-02-17T09:01:50.269Z DEBUG modem << %CESQ: 75,3,22,3
2023-02-17T09:01:50.602Z DEBUG modem << +CGEV: ME PDN ACT 0
2023-02-17T09:01:50.609Z DEBUG modem << +CEREG: 1,"7789","031B4300",7,,,"00100001","11000001"
2023-02-17T09:01:50.616Z DEBUG modem << +CIND: "service",1
2023-02-17T09:01:50.636Z DEBUG modem << +CGEV: IPV6 0
2023-02-17T09:02:01.148Z DEBUG modem << %CESQ: 65,3,10,1
2023-02-17T09:02:01.195Z DEBUG modem << +CEREG: 1,"7789","03128802",7,,,"00100001","11000001"
2023-02-17T09:02:01.557Z DEBUG modem << %CESQ: 67,3,15,2
2023-02-17T09:02:05.813Z DEBUG modem >> AT#XHTTPCCON=1,"example.com",443,10
2023-02-17T09:02:06.814Z ERROR Error: 'AT#XHTTPCCON=1,"example.com",443,10
' timed out
2023-02-17T09:02:07.774Z DEBUG modem << #XHTTPCCON: 1
2023-02-17T09:02:07.793Z DEBUG modem << OK
2023-02-17T09:02:07.794Z DEBUG modem << %CESQ: 67,3,8,1
2023-02-17T09:02:14.357Z DEBUG modem << %CESQ: 68,3,15,2
2023-02-17T09:02:16.361Z DEBUG modem >> AT#XHTTPCCON?
2023-02-17T09:02:16.372Z DEBUG modem << #XHTTPCCON: 1,"example.com",443,10
2023-02-17T09:02:16.374Z DEBUG modem << OK
2023-02-17T09:02:31.344Z DEBUG modem >> AT#XHTTPCREQ="POST","/","","application/json",0
2023-02-17T09:02:31.355Z DEBUG modem << OK
2023-02-17T09:02:31.374Z DEBUG modem << #XHTTPCREQ: 0
2023-02-17T09:02:31.460Z DEBUG modem << %CESQ: 67,3,8,1
2023-02-17T09:02:32.326Z DEBUG modem << HTTP/1.1 200 OK
2023-02-17T09:02:32.331Z DEBUG modem << Accept-Ranges: bytes
2023-02-17T09:02:32.333Z DEBUG modem << Cache-Control: max-age=604800
2023-02-17T09:02:32.335Z DEBUG modem << Content-Type: text/html; charset=UTF-8
2023-02-17T09:02:32.336Z DEBUG modem << Date: Fri, 17 Feb 2023 09:02:32 GMT
2023-02-17T09:02:32.338Z DEBUG modem << Etag: "3147526947"
2023-02-17T09:02:32.341Z DEBUG modem << Expires: Fri, 24 Feb 2023 09:02:32 GMT
2023-02-17T09:02:32.360Z DEBUG modem << Last-Modified: Thu, 17 Oct 2019 07:18:26 GMT
2023-02-17T09:02:32.361Z DEBUG modem << Server: EOS (vny/044E)
2023-02-17T09:02:32.363Z DEBUG modem << Content-Length: 1256
2023-02-17T09:02:32.364Z DEBUG modem << #XHTTPCRSP:301,1
2023-02-17T09:02:32.366Z DEBUG modem << <!doctype html>
2023-02-17T09:02:32.367Z DEBUG modem << <html>
2023-02-17T09:02:32.368Z DEBUG modem << <head>
2023-02-17T09:02:32.369Z DEBUG modem <<     <title>Example Domain</title>
2023-02-17T09:02:32.370Z DEBUG modem <<     <meta charset="utf-8" />
2023-02-17T09:02:32.392Z DEBUG modem <<     <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
2023-02-17T09:02:32.423Z DEBUG modem <<     <meta name="viewport" content="width=device-width, initial-scale=1" />
2023-02-17T09:02:32.426Z DEBUG modem <<     <style type="text/css">
2023-02-17T09:02:32.428Z DEBUG modem <<     body {
2023-02-17T09:02:32.429Z DEBUG modem <<         background-color: #f0f0f2;
2023-02-17T09:02:32.430Z DEBUG modem <<         margin: 0;
2023-02-17T09:02:32.431Z DEBUG modem <<         padding: 0;
2023-02-17T09:02:32.432Z DEBUG modem <<         font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
2023-02-17T09:02:32.456Z DEBUG modem <<     }
2023-02-17T09:02:32.458Z DEBUG modem <<     div {
2023-02-17T09:02:32.461Z DEBUG modem <<         width: 600px;
2023-02-17T09:02:32.463Z DEBUG modem <<         margin: 5em auto;
2023-02-17T09:02:32.464Z DEBUG modem <<         padding: 2em;
2023-02-17T09:02:32.465Z DEBUG modem <<         background-color: #fdfdff;
2023-02-17T09:02:32.466Z DEBUG modem <<         border-radius: 0.5em;
2023-02-17T09:02:32.467Z DEBUG modem <<         box-shadow: 2px 3px 7px 2px rgba(0,0,0,0.02);
2023-02-17T09:02:32.468Z DEBUG modem <<     }
2023-02-17T09:02:32.469Z DEBUG modem <<     a:link, a:visited {
2023-02-17T09:02:32.471Z DEBUG modem <<         color: #38488f;
2023-02-17T09:02:32.472Z DEBUG modem <<         text-decoration: none;
2023-02-17T09:02:32.473Z DEBUG modem <<     }
2023-02-17T09:02:32.474Z DEBUG modem <<     @media (max-width: 700px) {
2023-02-17T09:02:32.477Z DEBUG modem <<         div {
2023-02-17T09:02:32.479Z DEBUG modem <<             margin: 0 auto;
2023-02-17T09:02:32.480Z DEBUG modem <<             width: auto;
2023-02-17T09:02:32.481Z DEBUG modem <<         }
2023-02-17T09:02:32.483Z DEBUG modem <<     }
2023-02-17T09:02:32.484Z DEBUG modem <<     </style>    
2023-02-17T09:02:32.485Z DEBUG modem << </head>
2023-02-17T09:02:32.505Z DEBUG modem << <body>
2023-02-17T09:02:32.507Z DEBUG modem << <div>
2023-02-17T09:02:32.510Z DEBUG modem <<     <h1>Example Domain</h1>
2023-02-17T09:02:32.511Z DEBUG modem <<     <p>This domain is for use in illustrative examples in documents. You may use this
2023-02-17T09:02:32.512Z DEBUG modem <<     domain in literature without prior coordination or asking for permission.</p>
2023-02-17T09:02:32.514Z DEBUG modem <<     <p><a href="https://www.iana.org/domains/example">More information...</a></p>
2023-02-17T09:02:32.516Z DEBUG modem << </div>
2023-02-17T09:02:32.517Z DEBUG modem << </body>
2023-02-17T09:02:32.518Z DEBUG modem << </html>
2023-02-17T09:02:32.519Z DEBUG modem << #XHTTPCRSP:1256,1
2023-02-17T09:02:39.317Z DEBUG modem << %CESQ: 68,3,16,2

Best regards,

Charlie

[Kingfisher]

Hi Charlie,

Yes I know this.

I did the following:

1. Copied the certificate form the example into NotePad, removed double quotes and newlines

2. Created the AT command

3. Copy-pasted the whole command into the LTE Link Monitor Terminal

4. Clicked Send

AT%CMNG=0,14,0,"-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----"

Does the Terminal strip CR LF from the AT command? May be that's the issue.

[Charlie]

Hi,

It could be. Did you try with LTE Link Monitor->CETIFICATE MANAGER?

Best regards,

Charlie