如何访问 JpCap 数据包中的数据包信息 [英] How can you access the packet information in a JpCap Packet

问题描述

如何从 JpCap 数据包中提取相关数据包信息?我正在尝试查找源/目标 IP 和端口.到目前为止，我已经尝试过字符串解析 Packet 的 toString() 方法，但这似乎很粗暴.

How can I pull relevant packet information from a JpCap packet? I am trying to find the source/destination ip and port. So far I have tried string parsing the Packet's toString() method, but that seems brutish.

推荐答案

您必须将 Packet 对象强制转换为我认为正确的 Packet 类型.

You have to cast the Packet object to the correct type of Packet i think.

比如:

TCPPacket p = (TCPPacket)packet;

// Get the tcp src and dest ports
int destPort = p.dst_port;
int srcPort = p.src_port;

// Get the src and dest IP addresses from the IP layer
InetAddress destIp = p.dst_ip;
InetAddress srcIp = p.src_ip;

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