Support socks5 proxying

[michaelitni]

how can I use a socks5 with the proxy command

example
127.0.0.1:1080

[jetmore]

Swaks doesn't support socks proxies yet. The only proxy it supports is the PROXY protocol. It's definitely on the list to explore, I'll leave this open as a wishlist item.

Thanks for opening a github issue, BTW. I was just toying with using them for issue management two days ago, this will be a good experiment.

[jd-carroll]

@jetmore - if you publish the code here, it could also be a community developed feature. Thanks for the great utility!

[jetmore]

Also requested by devio.us#jirib 2012-01-04:

I've been looking for a smtp client which could work via
socks (helpful with Tor). As I haven't found any such client,
I've found 'socat' contains a script which could then talk
to a remote SMTP server with help of 'socat'.

As script is not fully OK for me, I have found `swanks', as
probably only smtp client being able to talk to a SMTP
server via pipes/sockets ;)

If I could raise a feature request I would vote for
a "native" socks/http proxy support.

[jetmore]

See PR #19 for example implementation

[lollipopman]

See PR #19 for example implementation

I rebased the code in #19 against the current code in develop and made a new pull request #114. The socks support works well and especially handy when on an ISP which blocks port 25, I'm looking at you Xfinity! Would love to see socks support merged in. Thanks for creating such an excellent swiss army knife.