TCP SOCKET沒有讀的數(shù)據(jù)不想要了怎么辦呢?

alpbrook

如果我通過TCP SOCKET讀了前面的數(shù)據(jù),后面的數(shù)據(jù)沒有用了,請問是繼續(xù)將后面的數(shù)據(jù)讀完呢,還是有其它的函數(shù)可以將SOCKET BUFFER里的數(shù)據(jù)清空,抑或直接關閉SOCKET?

flw

可以直接關閉。
close(socket)

cugb_cat

close

alpbrook

Socket Shutdown

Once a socket is no longer required, the calling program can discard the socket by applying a close subroutine to the socket descriptor. If a reliable delivery socket has data associated with it when a close takes place, the system continues to attempt data transfer. However, if the data is still undelivered, the system discards the data. Should the application program have no use for any pending data, it can use the shutdown subroutine on the socket prior to closing it.

flw

是否應該先 shutdown 再 close，要根據(jù)你的情況來定。
通常來說，不存在先 shutdown 再 close 就一定要比只 close 要好的情況，除非你的程序設計得有問題。