EWOULDBLOCK

Operation would block

The operation would block on a non-blocking descriptor. On most platforms EWOULDBLOCK is an alias for EAGAIN and shares its numeric value: 11 on Linux, 35 on macOS.

References

https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html

windows-errno

Operation would block

The socket is in non-blocking mode and the operation would block. Equivalent to EAGAIN for sockets.

Numeric value: 140

References

https://learn.microsoft.com/en-us/cpp/c-runtime-library/errno-doserrno-sys-errlist-and-sys-nerr

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