Tracking Issue for std::net::hostname

[orowith2os]

Feature gate: #![feature(gethostname)]

This is a tracking issue for retrieving the device's hostname.

rust-lang/libs-team#330 goes into far more detail; basically, "it seems to be a small but useful addition to std::net"

Public API

// std::net

pub fn hostname() -> std::io::Result<OsString>

Steps / History

• Implementation: std: implement hostname #146937
• Final comment period (FCP)¹
• Implementation on Windows
• Switch to String before stabilization, as the hostname is guaranteed to be valid ASCII (OsString is therefore unnecessary).
• Stabilization PR

Unresolved Questions

• Will using netc be fine for all targets that support std, or do we need to do more here? I think so, since any new targets without a libc can just expose the same function signature under netc (gethostname(ptr, len))
• On Windows, should this use GetComputerNameExW instead? See some discussion in Use gethostname on Windows djc/hostname#4
• Is the structure of this (with functions being directly under std::net) fine, with things like gethostbyname in mind?

Footnotes

1. https://std-dev-guide.rust-lang.org/feature-lifecycle/stabilization.html ↩