Unfortunately this required some code duplication because the
doConnect() from asynccommon.nim only works with addrInfo which does not
make sense for AF_UNIX.
makeUnixAddr() was moved to nativesocket.nim and exported
The only way to make this work for both abstract and non-abstract
sockets is to send the kernel an incomplete structure.
Reported by Epictek on the forum.
* net.accept no longer needs an initialised socket. Fixes#7848.
* Assert error when using sendTo/recvFrom on TCP socket.
* net.sendTo now raises OSError.
Under Linux (probably POSIX), the current code tests for timeout, but
does not test for connection failure. connectAsync() returns succesfully
upon an EINPROGRESS result; but at this point, the connection state is
still unknown. After selectWrite() is done, we need to test the socket
for errors again.
* Implement dial, support IPv6 in httpclient
Added ``dial`` procedure to networking modules: ``net``, ``asyncdispatch``,
``asyncnet``. It merges socket creation, address resolution, and connection
into single step. When using ``dial``, you don't have to worry about
IPv4 vs IPv6 problem.
Fixed addrInfo loop in connect to behave properly.
Previously it would stop on first non-immediate failure, instead of
continuing and trying the remaining addresses.
Fixed newAsyncNativeSocket to raise proper error if socket creation
fails.
Fixes: #3811
* Check domain during connect() only on non-Windows
This is how it was in the previous implementation of connect().
* Call 'osLastError' before 'close' in net.dial
* Record osLastError before freeAddrInfo in net.dial
* Add missing docs for 'dial' proc
* Optimize dial to create one FD per domain, add tests
And make async IPv6 servers work on Windows.
* Add IPv6 test to uri module
* Fix getAddrString error handling
