Read signal trigger, but receives 0 bytes of data
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To determine a connection as an example
FD_SET Read_Set;
Struct Timeval T_o;
...
FD_ZERO (& Read_set);
FD_SET (Lsockfd, & Read_set);
T_O.tv_sec = n; / * Timeout Six * /
RET = SELECT (LSOCKFD 1, & Read_set, NULL, NULL, & T_O);
IF (RET == 1)
{Count = Recv (LSOCKFD, BUF, LEN, 0);
IF (count == 0) | | (count == -1))))
{
/ * Both cases can be considered to be link close * /
}
...
}
...
