net::tcp/udp: fix docs about how set_nonblocking is implemented#155284
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rust-bors[bot] merged 1 commit intorust-lang:mainfrom Apr 18, 2026
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net::tcp/udp: fix docs about how set_nonblocking is implemented#155284rust-bors[bot] merged 1 commit intorust-lang:mainfrom
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…imulacrum net::tcp/udp: fix docs about how set_nonblocking is implemented `fcntl` `FIONBIO` doesn't even make sense, it should be `fcntl` `F_SETFL`. However, for some reason we are using `ioctl` by default -- except on Solaris where this doesn't seem to work very well. Honestly what I would have expected is that we just always use `FileDesc::set_nonblocking` also for network sockets, but for some reason we don't and there are no comments explaining this choice. Cc @nikarh (for "vita") @joboet
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…imulacrum net::tcp/udp: fix docs about how set_nonblocking is implemented `fcntl` `FIONBIO` doesn't even make sense, it should be `fcntl` `F_SETFL`. However, for some reason we are using `ioctl` by default -- except on Solaris where this doesn't seem to work very well. Honestly what I would have expected is that we just always use `FileDesc::set_nonblocking` also for network sockets, but for some reason we don't and there are no comments explaining this choice. Cc @nikarh (for "vita") @joboet
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…uwer Rollup of 10 pull requests Successful merges: - #150230 (spec next chunk for trustedlen) - #155284 (net::tcp/udp: fix docs about how set_nonblocking is implemented) - #146870 (fix: add aliasing rules for Box) - #154003 (Make std::fs::File Send on UEFI) - #155187 (std: fix HashMap RNG docs wording) - #155255 (Document why `layout.align() + layout.size()` doesn't overflow) - #155351 (Reorganize tests from `tests/ui/issues/`) - #155406 (std: Update dependency on `wasi` crate) - #155447 (Simplify `parse_limited`) - #155481 (Delete `SizeSkeleton::Generic`)
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Rollup merge of #155284 - RalfJung:net-nonblocking, r=Mark-Simulacrum net::tcp/udp: fix docs about how set_nonblocking is implemented `fcntl` `FIONBIO` doesn't even make sense, it should be `fcntl` `F_SETFL`. However, for some reason we are using `ioctl` by default -- except on Solaris where this doesn't seem to work very well. Honestly what I would have expected is that we just always use `FileDesc::set_nonblocking` also for network sockets, but for some reason we don't and there are no comments explaining this choice. Cc @nikarh (for "vita") @joboet
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fcntlFIONBIOdoesn't even make sense, it should befcntlF_SETFL. However, for some reason we are usingioctlby default -- except on Solaris where this doesn't seem to work very well.Honestly what I would have expected is that we just always use
FileDesc::set_nonblockingalso for network sockets, but for some reason we don't and there are no comments explaining this choice. Cc @nikarh (for "vita") @joboet