don't use TLS when being redirected from http to https

[MartinNowak]

• disconnect when changing host, schema, or port
• add defaultPort to URL to simplify code

[s-ludwig]

Should be named m_useTLS.

[s-ludwig]

Apart from the naming and the merge conflict in client.d, LGTM!

[s-ludwig]

I was wondering if it would make sense to make the .port property of URL smart, so that it automatically uses the default port when no explicit port is given (and sets the port to 0 if it equals defaultPort). Maybe with an additional rawPort property that accesses the actual port written in the URL string representation.

[MartinNowak]

Updated

I was wondering if it would make sense to make the .port property of URL smart, so that it automatically uses the default port when no explicit port is given

I think url.port ? url.port : url.defaultPort is short enough and less complex.

[MartinNowak]

Ping @s-ludwig.

[s-ludwig]

LGTM!