“Could not get any response” response when using postman with subdomain

I am using postman to test an API I have, all is good when the request does not contain sub-domain, however when I add a sub-domain to URL I am getting this response.

Could not get any response

There was an error connecting to http://subdomain.localhost:port/api/

Why this might have happened:

The server couldn’t send a response:Ensure that the backend is working
properly

Self-signed SSL certificates are being blocked:Fix this by turning off
‘SSL certificate verification’ in Settings > General

Proxy configured incorrectly Ensure that proxy is configured correctly
in Settings > Proxy

Request timeout:Change request timeout in Settings > General

If I copy the same URL from postman and paste it into the browser I get a proper response, is there some kind of configurations I should do to make postman work with sub-domains?

First Go to Settings in Postman:

1. Off the SSL certificate verification in General Tab:

2. Off the Global Proxy Configuration and Use System Proxy in Proxy Tab:

3. Make Request Timeout to 0 (Zero)

Configure Apache:

If above changes resulted in 404 response, then continue reading 😉

Users that host their site locally (like with XAMP and/or WAMP), may be able to visit their virtual-sites using https:// prefixed address, but it’s a lie, and to really enable SSL (for each virtual-site), configure Apache like:

• Open httpd-vhosts.conf file (from Apache‘s conf/extras directory), in your preferred text-editor.

• Change virtual-site’s settings, into something like:

  <VirtualHost *:80 *:443>
      ServerName my-site.local
      ServerAlias *.my-site.local
      DocumentRoot "C:\xampp\htdocs\my-project\public"
  
      SSLEngine on
      SSLCertificateFile "path/to/my-generated.cert"
      SSLCertificateKeyFile "path/to/my-generated.key"
  
      SetEnv APPLICATION_ENV "development"
  
      <Directory "C:\xampp\htdocs\my-project\public">
          Options Indexes FollowSymLinks
          AllowOverride All
          Order allow,deny
          Allow from all
      </Directory>
  </VirtualHost>
  

  But of course, generate a dummy-SSL-certificate, and change all file-paths, like from “path/to/my-generated.cert” into real file-addresses.

• Finally, test by visiting local-site in browser, but using http:// (without S) prefixed address; Apache should now give error like:

  Bad Request
  
  Your browser sent a request that this server could not understand.
  Reason: You're speaking plain HTTP to an SSL-enabled server port.
  Instead use the HTTPS scheme to access this URL, please.