Do not include the port number in the Host

[gajus]

https://github.com/TooTallNate/node-https-proxy-agent/blob/6bbbef774527c8bdb5bf013d9ecc545ceaa7c974/https-proxy-agent.js#L192

This is making requests against multiple websites fail, e.g.

MacBook-Pro~ % curl 'http://www.watershed.co.uk/whatson/calendar/' -H 'Host: www.watershed.co.uk' -I
HTTP/1.1 200 OK
Date: Tue, 24 Jan 2017 21:44:16 GMT
Server: Apache/2.4.16 (FreeBSD) OpenSSL/1.0.1j-freebsd PHP/5.6.12
X-Powered-By: PHP/5.6.12
X-Drupal-Cache: MISS
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Cache-Control: no-cache, must-revalidate, no-transform
X-Content-Type-Options: nosniff
Content-Language: en
X-Frame-Options: SAMEORIGIN
X-UA-Compatible: IE=edge
X-Generator: Drupal 7 (http://drupal.org)
Link: <http://www.watershed.co.uk/whatson/calendar>; rel="canonical",<http://www.watershed.co.uk/whatson/calendar>; rel="shortlink"
Vary: User-Agent
Content-Type: text/html; charset=utf-8

MacBook-Pro~ % curl 'http://www.watershed.co.uk/whatson/calendar/' -H 'Host: www.watershed.co.uk:80' -I
HTTP/1.1 404 Not Found
Date: Tue, 24 Jan 2017 21:44:26 GMT
Server: Apache/2.4.25 (FreeBSD) OpenSSL/1.0.1s-freebsd
Content-Type: text/html; charset=iso-8859-1

[TooTallNate]

Patch welcome! Note that the port should only be omitted for default port 80 for HTTP and 443 for HTTPS URLs. Any other port is expected to be included in the Host header.

[bigsan]

This didn't solve the problem, the reason is explained in #43