Can I dial a whatsapp number from a sip account?

Question

Is it possible to call a whatsapp contact from other than whatsapp, say for example I have a sip provider. Can I use it to call a whatsapp number?

Answer 1

If you are just getting started, trying to configure an AWS load balancer is probably going to be confusing and a lot of work for you. I would stick with just getting HTTPD to work on your EC2 instance, first. You can add other stuff, later.

First, almost everything you did so far was correct. Thanks for providing so much detail for your steps-so-far.

Second, your TLS certificate (which is required for HTTPS) is pretty important. If you indeed have a wildcard certificate from IONOS (or anybody, really), then that's the cert you should use. You will need the certificate itself and also the private key for it. You can also request a free certificate from AWS if you'd like. You will need to manually extract the key and certificate from AWS for use on your own EC2 server. (Note that the Common Name (CN) and Subject Alternative Name (SAN) fields for your TLS certificate should be your domain name and not the compute.internal.amazon.com thing.)

Third, you'll need to install those certificates into Tomcat. You need to do that by editing your conf/server.xml file and adding a new <Connector> like this:

<!-- HTTP Connector -->
<Connector port="443" SSLEnabled="true" scheme="https" secure="true" ...[other attributes you might want]...>
  <SSLHostConfig ... />
</Connector>

You will need to look at the documentation for SSLHostConfig to see how to configure it, and a lot depends upon the type of key you have (e.g. EC vs RSA, etc.), what format your key+cert are currently in (pkcs12 file, PEM files, etc.), and a few other things.

But this should be enough to get you started.