encode special characters @*/+ in http tracker urls

[feross]

No description provided.

[astro]

Hmmm... if /[\@\*\/\+]/g need to be escaped then perhaps the tracker is broken? encodeURIComponent() escapes all but the asterisk. encodeURI() escapes none of these chars.

[feross]

No, this change does not affect the tracker server.

The only issue is that the client should escape + in http query params, since the spec says these will be interpreted as spaces. That would make %2b (a + character) be interpreted as %20 by the tracker server which would be bad.

/ and @ should also be escaped according to spec, and that's what encodeURIComponent does. I added * to match the behavior I saw in Transmission, though I don't think it's strictly required.

This fixes webtorrent/webtorrent#196.

[feross]

Released as 2.10.1.