Help! Why is the result detected by the Socket with the SELECT function?

xiaoxiao2021-03-14  185

FD_set fd = {1, msocket}; TimeVal TV = {2, 0}; ISEL = SELECT (0, NULL, & FD, NULL, & TV)

The service program connected by MSocket has terminated, the return value of the ISEL is still 1, correct! ! ? ?

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