try this

plackup -p 55001 --ssl --ssl-key-file=C:\Users\Documents\Private-Publi
+c\privateKey.key --ssl-cert-file=C:\Users\Documents\Private-Public\ce
+rtificate.crt app.psg
[download]

I was getting the same error

failed to listen to port 55001:  at C:/Strawberry/perl/site/lib/HTTP/Server/PSGI.pm line 103.

Can we have a command that verify the certificate? My certificate is self signed certificate. How can i verify the same?

Dear Smart Monks, Are there anyone who can let me know to check the exact error with SSL validation here? How i can check the same?

C:\Users\Documents\Perl\webapp\bin>plackup --ssl --ssl-key-file=C:\Use
+rs\Documents\Private-Public-key-cert\Private0504.key --ssl-cert-file=
+C:\Users\Documents\Private-Public-key-cert\Cert.crt --ssl_fingerprint
+=B1:51:CE:74:BC:55:0F:F4:FF:17.......... app.psgi
[webapp:35672] core @2021-05-05 00:19:35> Built config from files: C:\
+Users\Documents\Perl\Synchrony-Perl\webapp\config.yml C:\Users\Docume
+nts\Perl\Synchrony-Perl\webapp\environments\development.yml in (eval 
+272) l. 910
failed to listen to port 5000:  at C:/Strawberry/perl/site/lib/HTTP/Se
+rver/PSGI.pm line 103.
[download]

The doc for IO::Socket::SSL suggests setting the environment variable $IO::Socket::SSL::DEBUG to 1, 2 or 3.

Hope this helps!



The way forward always starts with a minimal test.