fd_set is defined as 16 64-bit integers in a 64-bit linux machine. Since this package accesses fd_set per 32 bits, endianess needs to be taken aware to calculate the index.
- Now uses an unsigned type to perform the bit-shift operation and then casts to signed type using `init(bitPattern:)`.
- Added a unit test case which ensures fd values from zero to (arbitrarily) 128 can all be inserted and removed from the fd_set.
- `fd_set` API is now much nicer and will compile about as close to the C implementation as we can get— especially on release builds, with compiler inlining.
- Socket structure's `readBuffer` now initializes all its bytes to zero, not just the first.
- More idiomatic/concise return expression in `Socket.wait(for:timeout:waitForever:)` (don't build an output array manually, we have `filter(_:)` for that).
- Various non-Linux code to set the `SO_NOSIGPIPE` option has been tucked into a private function now, still containing the compilation conditional. It's a no-op on Linux, and will be inlined by the compiler (since it's private) and the calling code looks much more straightforward.
- BUGFIX: calls to `gai_strerror(_:)` take the result of the `getaddrinfo()` call as a parameter, NOT `errno`.
asAddr funcs were passing unsafe pointers outside of the callbacks in which try should be used
Using callback to make all the access within these callbacks
Fixes bug where IPv6 address was 'cast' to sockaddr but actually was zero'd beyond the length of sockaddr_in and packets written to the wrong address
Bill Abt
David Jones
Takuya Nakaike
Jim Dovey
ShihabMehboob
Bill Abt
Fred Cox
Quan Vo