Socket Programming? TCP Server, clients know how when to withdraw? Socket Programming? Use select detection ah Socket Programming? Client services from the end is to send a signal FIN? Socket Programming? Socket Programming? Yes, the closure of the client, will be issued FIN messaging service terminal will send an ACK response, the client then enter FIN_WAIT2 state, the terminal will enter service CLOSE_WAIT state. When the service termination FIN messages received after the return of a select things readable, and recv judge recv return value of 0 if it is to return, said Client closed. Socket Programming? Return -1 also read with the other closed! Similarly, it read back Client Server Table 1 is not closed? Socket Programming? 1 is expressed wrong Socket Programming? It is not a continuous link with the other judge read, test the return value is not 0? Socket Programming? Yes, you can write a procedure to test. [ Closed window ]