I implemented a AWS lambda function which shall pass an Alexa custom skill event to my domain for processing, see code below.
const https = require('https');
exports.handler = (event, context, callback) => {
var options = {
hostname: '<my.domain.com>',
path: '/<mypath>',
port: 443,
method: 'POST',
rejectUnauthorized: false,
headers: {
'Content-Type': 'application/json',
'Authorization': '<my base64 user:password>'
}
};
const req = https.request(options, (res) => {
let body = '';
console.log('Status:', res.statusCode);
console.log('Headers:', JSON.stringify(res.headers));
res.setEncoding('utf8');
res.on('data', (chunk) => {
body += chunk;
});
res.on('end', () => {
console.log('Successfully processed HTTPS response');
body = JSON.parse(body);
callback(null, body);
});
});
req.on('error', callback);
req.write(JSON.stringify(event));
req.end();
};
The function runs serverless, not connected to a VPC.
The domain <my.domain.com> resolves to an IPv6 address and I am able to connect to my host for example from an internet instance using curl and receive the expected answers.
curl -i -k -v -X POST -d testcase.json -u user:password https://<my.domain.com>:<my port>/<my path>
In AWS I implemented a test case and run it. The test returned the error ENOTFOUND from function getaddrinfo trying to resolve my domain, see execution result below.
Test Event Name
Test0001
Response
{
"errorType": "Error",
"errorMessage": "getaddrinfo ENOTFOUND <my.domain.com>",
"trace": [
"Error: getaddrinfo ENOTFOUND <my.domain.com>",
" at GetAddrInfoReqWrap.onlookup [as oncomplete] (node:dns:71:26)"
]
}
Function Logs
LOGS Name: cloudwatch_lambda_agent State: Subscribed Types: [platform]
EXTENSION Name: cloudwatch_lambda_agent State: Ready Events: [SHUTDOWN,INVOKE]
START RequestId: 78314f37-e991-4d3d-b4f2-03da64bf91b7 Version: $LATEST
2022-09-24T04:59:06.966Z 78314f37-e991-4d3d-b4f2-03da64bf91b7 ERROR Invoke Error {"errorType":"Error","errorMessage":"getaddrinfo ENOTFOUND <my.domain.com>","code":"ENOTFOUND","errno":-3008,"syscall":"getaddrinfo","hostname":"<my.domain.com>","stack":["Error: getaddrinfo ENOTFOUND <my.domain.com>"," at GetAddrInfoReqWrap.onlookup [as oncomplete] (node:dns:71:26)"]}
END RequestId: 78314f37-e991-4d3d-b4f2-03da64bf91b7
REPORT RequestId: 78314f37-e991-4d3d-b4f2-03da64bf91b7 Duration: 425.43 ms Billed Duration: 426 ms Memory Size: 128 MB Max Memory Used: 76 MB Init Duration: 248.14 ms
During my investigation I found the hint to add option „family: 6,“. Using this option the test case resolves the domain now to the correct ipv6 address, but returns then EAFNOSUPPORT trying to connect to the address, see execution result below.
Request ID
78314f37-e991-4d3d-b4f2-03da64bf91b7
Test Event Name
Test0001
Response
{
"errorType": "Error",
"errorMessage": "connect EAFNOSUPPORT xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:443 - Local (undefined:undefined)",
"trace": [
"Error: connect EAFNOSUPPORT xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:443 - Local (undefined:undefined)",
" at internalConnect (node:net:953:16)",
" at defaultTriggerAsyncIdScope (node:internal/async_hooks:465:18)",
" at GetAddrInfoReqWrap.emitLookup [as callback] (node:net:1097:9)",
" at GetAddrInfoReqWrap.onlookup [as oncomplete] (node:dns:73:8)"
]
}
Function Logs
LOGS Name: cloudwatch_lambda_agent State: Subscribed Types: [platform]
EXTENSION Name: cloudwatch_lambda_agent State: Ready Events: [INVOKE,SHUTDOWN]
START RequestId: f3493148-071f-466d-94c7-d29a0d715640 Version: $LATEST
2022-09-24T05:06:52.877Z f3493148-071f-466d-94c7-d29a0d715640 ERROR Invoke Error {"errorType":"Error","errorMessage":"connect EAFNOSUPPORT xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:443 - Local (undefined:undefined)","code":"EAFNOSUPPORT","errno":-97,"syscall":"connect","address":"xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx","port":443,"stack":["Error: connect EAFNOSUPPORT xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:443 - Local (undefined:undefined)"," at internalConnect (node:net:953:16)"," at defaultTriggerAsyncIdScope (node:internal/async_hooks:465:18)"," at GetAddrInfoReqWrap.emitLookup [as callback] (node:net:1097:9)"," at GetAddrInfoReqWrap.onlookup [as oncomplete] (node:dns:73:8)"]}
END RequestId: f3493148-071f-466d-94c7-d29a0d715640
REPORT RequestId: f3493148-071f-466d-94c7-d29a0d715640 Duration: 447.45 ms Billed Duration: 448 ms Memory Size: 128 MB Max Memory Used: 76 MB Init Duration: 231.52 ms
Request ID
f3493148-071f-466d-94c7-d29a0d715640
Any further investigation was not successful. I assume it is an issue using IPv6, but I am not able to solve it. Any help is appreciated. Thank you in advance.
Joachim
AWS OFFICIALUpdated 2 years ago
