[Bug 3700] Unresponsive domain names freeze SSH connection when using SOCKS proxy

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3700

Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |djm at mindrot.org
           Severity|critical                    |enhancement

--- Comment #1 from Damien Miller <djm at mindrot.org> ---
It sounds like you want non-blocking DNS requests in the SOCKS proxy
code. This would be great to have, but unfortunately there is no
cross-platform libc API we can rely on to do this and we're generally
loath to pick up additional libraries except when strictly necessary.

Another possibility is implementing asynchronous DNS resolution via a
forked subprocess, which is portable but would complicate the channels
code fairly significantly.

You could probably avoid this by disabling the "Proxy DNS when using
SOCKS5" setting in firefox.

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