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Ken Brown 3b0ba65352 Cygwin: connect: implement resetting a connected DGRAM socket
Following POSIX and Linux, allow a connected DGRAM socket's connection
to be reset (so that the socket becomes unconnected).  This is done by
calling connect and specifing an address whose family is AF_UNSPEC.
2021-04-27 10:01:45 -04:00

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What's new:
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What changed:
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Bug Fixes
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- Fix values returned by select(2) for shutdown sockets.
Addresses: https://cygwin.com/pipermail/cygwin-developers/2021-April/012092.html
- Introduce a new hypotl(3) function not suffering unnecessary overflows.
Addresses: https://cygwin.com/pipermail/cygwin/2021-April/248302.html
- Fix path handling for paths spanning native symlinks.
Addresses: https://cygwin.com/pipermail/cygwin/2021-April/248307.html
- Fix tab position evaluation after console window resize.
- Fix a regression in pseudo console handling, resulting in rlwrap not
being able to start a new pseudo console.
- Handle two race conditions in pseudo console usage.
Addresses: https://cygwin.com/pipermail/cygwin/2021-April/248292.html
- Fix a bug in recognizing a successful completion of connect(2) on a
datagram socket.
- Fix connect(2) when called with an address structure whose family is
AF_UNSPEC. As specified by POSIX and Linux, this is allowed on
datagram sockets, and its effect is to reset the socket's peer
address.