#12195: [Network] silently quits upon selecting DNS settings
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Reporter: diver | Owner: pulkomandy
Type: bug | Status: new
Priority: normal | Milestone: R1/beta1
Component: Preferences/Network | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by jua):
The DNS network settings use the `__res` API which, according to NetBSD
[0], has been out of favour for a long time. In hrev49371 I switched our
netresolv to use the thread-safe version of the res functions, which are
also used internally by getaddrinfo() and others (for further explanation
see the commit message). It was necessary because the thread-unsafe
version broke name resolution in the Services Kit (as soon as more than
one request happened at the same time).
However, the thread-safe implementation doesn't support the old
`__res_state()` API at all anymore, hence this bug. On the NetBSD problem
report in [0] it is recommended to use a local `_res_state` via
`res_ninit()` and `res_nclose()` instead. I'm not familiar with these APIs
- maybe Axel can comment if that would be feasible?
Other options would be extending netresolv ourselves to allow using this
(basically, providing a mix of NetBSD's thread-safe and thread-unsafe
functions, not a good choice I think), or switching to a different
implementation altogether.
[0] http://gnats.netbsd.org/46661
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Ticket URL: <https://dev.haiku-os.org/ticket/12195#comment:1>
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