The AddressList returned can contain more than one item
e.g. the ipv4 and ipv6 addresses for a given hostname.
Previously if a server had multiple addresses but
was not listening on one of them Zig would give up
immediately.
Now on std.os.ConnectError.ConnectionRefused Zig will
try the next address in the list. Zig still gives up on
all other errors as they are related to the system and
system resources rather than whether the remote server
is listening on a particular address.
* improve docs
* add TODO comments for things that don't have open issues
* remove redundant namespacing of struct fields
* guard against ioctl returning EINTR
* remove the general std.os.ioctl function in favor of the specific
ioctl_SIOCGIFINDEX function. This allows us to have a more precise
error set, and more type-safe API.
Remove the constants that assume a base unit in favor of explicit
x_per_y constants.
nanosecond calendar timestamps now use i128 for the type. This affects
fs.File.Stat, std.time.nanoTimestamp, and fs.File.updateTimes.
calendar timestamps are now signed, because the value can be less than
the epoch (the user can set their computer time to whatever they wish).
implement std.os.clock_gettime for Windows when clock id is
CLOCK_CALENDAR.
This new name (and the fact that it is a function returning a type) will
make it more clear which use cases are better suited for ArrayList and
which are better suited for ArrayListSentineled.
Also for consistency with ArrayList,
* `append` => `appendSlice`
* `appendByte` => `append`
Thanks daurnimator for pointing out the confusion of std.Buffer.
before:
```
std\net.zig:403:23: error: type '@TypeOf(std.net.getAddressList).ReturnType.ErrorSet!*std.net.AddressList' does not support field access
const addrs = list.addrs.toSliceConst();
^
```
* re-introduce `std.build.Target` which is distinct from `std.Target`.
`std.build.Target` wraps `std.Target` so that it can be annotated as
"the native target" or an explicitly specified target.
* `std.Target.Os` is moved to `std.Target.Os.Tag`. The former is now a
struct which has the tag as well as version range information.
* `std.elf` gains some more ELF header constants.
* `std.Target.parse` gains the ability to parse operating system
version ranges as well as glibc version.
* Added `std.Target.isGnuLibC()`.
* self-hosted dynamic linker detection and glibc version detection.
This also adds the improved logic using `/usr/bin/env` rather than
invoking the system C compiler to find the dynamic linker when zig
is statically linked. Related: #2084
Note: this `/usr/bin/env` code is work-in-progress.
* `-target-glibc` CLI option is removed in favor of the new `-target`
syntax. Example: `-target x86_64-linux-gnu.2.27`
closes#1907
