Commits on Jul 27, 2024

1. [illumos/solaris] set MSG_NOSIGNAL while writing to sockets …

   Both these platforms have MSG_NOSIGNAL available, and we should set it for
   socket writes in the event that the SIGPIPE handler has been reset to SIG_DFL
   (i.e. terminate the process).
   
   I've verified via a quick program at
   https://github.com/sunshowers/msg-nosignal-test/ that even when the SIGPIPE
   handler is reset to SIG_DFL, writes to closed sockets now error out with EPIPE.
   (Under ordinary circumstances UDP writes won't cause MSG_NOSIGNAL.)

   

   sunshowers committed Jul 27, 2024
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