用snmp协议监测tcp连接

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1、通过编程和服务器建立一条TCP连接，然后利用SNMP协议监测主机上的这条TCP连接，获取监测的信息（本地地址、端口及服务器的地址、端口以及连接的状态），将获取监测的信息连同学号发送给服务器。完整代码如下：importjava.io.*;importjava.net.Socket;importjava.util.List;importorg.snmp4j.CommunityTarget;importorg.snmp4j.PDU;importorg.snmp4j.Snmp;importorg.snmp4j.TransportMapping;importorg.snmp4j.mp.Snm

2、pConstants;importorg.snmp4j.smi.Address;importorg.snmp4j.smi.GenericAddress;importorg.snmp4j.smi.OID;importorg.snmp4j.smi.OctetString;importorg.snmp4j.smi.VariableBinding;importorg.snmp4j.transport.DefaultUdpTransportMapping;importorg.snmp4j.util.DefaultPDUFactory;importorg.snmp4j.util.TableEv

3、ent;importorg.snmp4j.util.TableUtils;publicclassTestNetStat{publicstaticvoidmain(String[]args)throwsIOException{Stringoutinfo;Socketsocket=newSocket("112.136.10.44",27);try{TcpUtilmyutil=newTcpUtil();outinfo=myutil.printTcpConn();System.out.println("socket="+socket);BufferedReaderin=newBuffere

4、dReader(newInputStreamReader(socket.getInputStream()));PrintWriterout=newPrintWriter(newBufferedWriter(newOutputStreamWriter(socket.getOutputStream())),true);if(outinfo!=null)out.println(outinfo+"M20");System.out.println("发送的信息：");System.out.println(outinfo+"M20");System.out.println("接收的信息：");

5、Stringstr=in.readLine();System.out.println(str);in.close();out.close();System.out.println("发送监听成功！！！！！！！！！！！1");socket.close();}catch(IOExceptione){e.printStackTrace();}}}classNetStat{staticString[]stat={"???","CLOSED","LISTENING","SYN_SENT","SEN_RECEIVED","ESTABLISHED","FIN_WAIT","FIN_WAIT2",

6、"CLOSE_WAIT","CLOSING","LAST_ACK","TIME_WAIT"};}classTcpUtil{publicStringprintTcpConn()throwsIOException{Stringstr=null;TransportMappingtransport=newDefaultUdpTransportMapping();Snmpsnmp=newSnmp(transport);transport.listen();AddresstargetAddress=GenericAddress.parse("udp:127.0.0.1/161");Com

7、munityTargettarget=newCommunityTarget();target.setCommunity(newOctetString("public"));target.setAddress(targetAddress);target.setRetries(2);target.setTimeout(1500);target.setVersion(SnmpConstants.version2c);TableUtilstutils=newTableUtil