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Add socket extensions for cygwin #139524

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@Berrysoft Berrysoft commented Apr 8, 2025 •
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r? @joboet

  • Abstract name uds addr
  • quickack
  • passcred

@rustbot rustbot added O-unix Operating system: Unix-like S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Apr 8, 2025
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@Berrysoft Berrysoft marked this pull request as ready for review April 8, 2025 15:03
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Berrysoft commented Apr 9, 2025 •
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Some limitations:

  • Cannot connect the addr from recvfrom of a unix datagram socket.
    • It seems like a bug of cygwin.
    • A patch has been proposed.
    • UPDATE: patch merged. Now the test passes.
  • Cannot bind to abstract addr - not supported by cygwin.
  • Unbounded unix socket has an abstract local addr - a feature (autobind?) of cygwin.
  • Unix socket doesn't support recvmsg with control data. It fallbacks to recvmsg without control data.
  • Unix socket connect blocks until the server accepts it. See mailing list. I have to ignore some tests because of that.

@Berrysoft Berrysoft force-pushed the cygwin-socket-ext branch from 306b6a0 to e0b30bf Compare April 9, 2025 16:12
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