The easiest way is to use the cpan or cpanm tool:

cpan
> look IO::Socket::SSL
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or

cpanm --look IO::Socket::SSL
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But have you made sure that IO::Socket::SSL is not already installed on your machine? If the following oneliner does not output an error, you already have the module:

perl -MIO::Socket::SSL -e1
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Hello , I am getting below and its looks like the IO::Socket::SSL is already present.

C:\Users\Documents\Perl\Comp-Perl\webapp\bin>cpanm --look IO::Socket::
+SSL
--> Working on IO::Socket::SSL
Fetching http://www.cpan.org/authors/id/S/SU/SULLR/IO-Socket-SSL-2.070
+.tar.gz ... OK
Entering C:/Users/.cpanm/work/1620123254.45360/IO-Socket-SSL-2.070 wit
+h C:\WINDOWS\system32\cmd.exe
Microsoft Windows [Version 10.0.18363.1443]
(c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\.cpanm\work\1620123254.45360\IO-Socket-SSL-2.070>
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It does not look the IO::Socket::SSL is working since i am getting below. Please help in any advices. I am using Strawberry Perl

C:\Users\Documents\Perl\Synchrony-Perl\webapp\bin>plackup --ssl --ssl-
+key-file=C:\Users\Documents\Private-Public\privateKey.key --ssl-cert-
+file=C:\Users\Documents\Private-Public\certificate.crt app.psgi
failed to listen to port 5000:  at C:/Strawberry/perl/site/lib/HTTP/Se
+rver/PSGI.pm line 103.
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You asked cpanm to download, unpack and open a shell in the modules directory, this does not mean it is installed. cpanm -vvv .

Update: You'd waste less time if you looked up the commands you are using (e.g. look), rather than guess at what they're doing.

I am getting below installation hang issue on my Windows system in Strwberry perl

# listen at 127.0.0.1:65056
# connect to 0: success reuse=0 version=TLSv1_3
t/session_ticket.t ................ 1/6 # connect to 0: success reuse=
+1 version=TLSv1_3
# connect to 1: success reuse=1 version=TLSv1_3
# connect to 1: success reuse=0 version=TLSv1_3
# connect to 0: success reuse=0 version=TLSv1_3
# connect to 0: success reuse=1 version=TLSv1_3
t/session_ticket.t ................ ok
t/sessions.t ...................... ok
t/set_curves.t .................... Failed 1/6 subtests
t/signal-readline.t ............... skipped: signals not relevant on t
+his platform
t/sni.t ........................... ok
t/sni_verify.t .................... 1/17 Terminating on signal SIGINT(
+2)
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How can i bypass this test?