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i'm develop android app for sniffing packets from device. I'm using pcap4j library, but when call Pcaps.getDevByAddress(), launches the exception. Can you help me?

This is snipped code:

InetAddress destAddr = parsedPacket;

PcapNetworkInterface nif =Pcaps.getDevByAddress(destAddr);

Thanks

paky
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2 Answers2

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Not sure if this might still be an issue for you. Have you added both dependencies to you classpath?

Add the following to your pom.xml:

<dependencies>
 <dependency>
  <groupId>org.pcap4j</groupId>
  <artifactId>pcap4j-core</artifactId>
  <version>1.7.3</version>
 </dependency>
 <dependency>
  <groupId>org.pcap4j</groupId>
  <artifactId>pcap4j-packetfactory-static</artifactId>
  <version>1.7.3</version>
 </dependency>
   ...
</dependencies>

Also make sure you have installed pcaplib-dev on your machine. Depends on OS how to install it.

Did you perform these steps?

If so, have you given java root access (assuming you are on linux)? I have seen people getting issues after they used the set_cap command. Please let me know!

Crittje
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I guess you should add JNA as aar:

implementation 'net.java.dev.jna:jna:5.5.0@aar'

ref: https://github.com/java-native-access/jna/blob/master/www/FrequentlyAskedQuestions.md#jna-on-android

YAMAMOTO Yuji
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