A.receive(DatagramPacketp) B.send(DatagramPacketp) C.getData() D.close()
A.DatagramSocketds=newDatagramSocket() B.DatagramSocketds=newDatagramSocket(intprot) C.DatagramSocketds=newDatagramSocket(intport,InetAddressladdr) D.DatagramSocketds=newDatagramSocket(Stringaddr,intport)
A.通信雙方需要建立連接 B.UDP可靠性差 C.發(fā)送數(shù)據(jù)報 D.UDP面向事務(wù),數(shù)據(jù)報的讀、寫都是獨立的