Ngrok: Failed to read message: remote error: bad certificate

[ericxsun]

I did the following steps

export NGROK_BASE_DOMAIN="ip"
openssl genrsa -out rootCA.key 2048
openssl req -x509 -new -nodes -key rootCA.key -subj "/CN=$NGROK_BASE_DOMAIN" -days 5000 -out rootCA.pem
openssl genrsa -out device.key 2048
openssl req -new -key device.key -subj "/CN=$NGROK_BASE_DOMAIN" -out device.csr
openssl x509 -req -in device.csr -CA rootCA.pem -CAkey rootCA.key -CAcreateserial -out device.crt -days 5000

cp rootCA.pem assets/client/tls/ngrokroot.crt
cp device.crt assets/server/tls/snakeoil.crt
cp device.key assets/server/tls/snakeoil.key

make release-server release-client

run the server side:
$bin/ngrokd -domain="121.199.57.37" -httpAddr=":9000" -tlsKey=./device.key -tlsCrt=./device.crt

run the client side
$./ngrok -config=ngrok.cfg -proto=http -log=stdout 8080

with ngrok.cfg
server_addr: "ip:4443" #ip same as NGROK_BASE_DOMAIN
trust_host_root_certs: false

However, error ocuured:

server side error message:
Failed to read message: remote error: bad certificate
[DEBG] [tun:3f0fcbcc] Closing

client side error message:
control recovering from failure x509: cannot validate certificate for ip because it doesn't contain any IP SANs

So, could anybody help me? What's wrong with this?

Any help will be highly appreciated.

[nordicdyno]

Did you resolve it? (I'm interested in it)

[ericxsun]

Using hostname instead of ip could solve this problem.