Commits on Oct 13, 2023

1. Make TCP connect() handle EINTR correctly …

   According to the POSIX standard, if connect() is interrupted by a
   signal that is caught while blocked waiting to establish a connection,
   connect() shall fail and set errno to EINTR, but the connection
   request shall not be aborted, and the connection shall be established
   asynchronously.
   
   If asynchronous connection was successfully established after EINTR
   and before the next connection attempt, OS returns EISCONN that was
   handled as an error before. This behavior is fixed now and we handle
   it as success.
   
   The problem affects MacOS users: Linux doesn't return EISCONN in this
   case, Windows connect() can not be interrupted without an old-fashoin
   WSACancelBlockingCall function that is not used in the library.
   So current solution gives connect() as OS specific implementation.

   

   darthunix committed Oct 13, 2023
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