Portál AbcLinuxu, 14. července 2025 06:42
EINPROGRESS The socket is non-blocking and the connection cannot be com- pleted immediately. It is possible to select(2) or poll(2) for completion by selecting the socket for writing. After select indicates writability, use getsockopt(2) to read the SO_ERROR option at level SOL_SOCKET to determine whether connect com- pleted successfully (SO_ERROR is zero) or unsuccessfully (SO_ERROR is one of the usual error codes listed here, explain- ing the reason for the failure).
F_SETFL
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