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Resolve scope IDs using IPv6 sockets

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On certain systems (Solaris), resolving the scope id from an interface
name can only be done on AF_INET-domain sockets. While we're here,
simplify the test while we're here, since there's only one address.

Also note that the loopback interface name is not stable across OSs.
BSDs and Solaris use `lo0` whilst Linux uses `l0`.
This commit is contained in:
Stephen Gregoratto 2021-09-18 23:26:55 +10:00 committed by Andrew Kelley
parent 1e7009a9d9
commit a032fd01e8
1 changed files with 11 additions and 15 deletions
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26
lib/std/x/os/net.zig
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@ -27,7 +27,7 @@ pub fn resolveScopeId(name: []const u8) !u32 {
return rc;
}
const fd = try os.socket(os.AF.UNIX, os.SOCK.DGRAM, 0);
const fd = try os.socket(os.AF.INET, os.SOCK.DGRAM, 0);
defer os.closeSocket(fd);
var f: os.ifreq = undefined;
@ -566,21 +566,17 @@ test "ipv6: parse & format" {
test "ipv6: parse & format addresses with scope ids" {
if (!have_ifnamesize) return error.SkipZigTest;
const iface = if (native_os.tag == .linux)
"lo"
else
"lo0";
const input = "FF01::FB%" ++ iface;
const output = "ff01::fb%1";
const inputs = [_][]const u8{
"FF01::FB%lo",
const parsed = IPv6.parse(input) catch |err| switch (err) {
error.InterfaceNotFound => return,
else => return err,
};
const outputs = [_][]const u8{
"ff01::fb%1",
};
for (inputs) |input, i| {
const parsed = IPv6.parse(input) catch |err| switch (err) {
error.InterfaceNotFound => continue,
else => return err,
};
try testing.expectFmt(outputs[i], "{}", .{parsed});
}
try testing.expectFmt(output, "{}", .{parsed});
}