IP in java.net

[Eli]

Hello,
Been playing lately with the TCP and UDP sockets in the java.net
package, a question came up: using Java, can one reach the Ethernet
and the IP layers? In other words, is there a way to compose IP
datagrams and to compose ethenet frames?
I know you can play with the Datagram Socket/Packet classes to build
UDP connection, which is a bit more than an IP connection, but I'm
just keen on playing inside the IP level if this is possible in Java.
That was done in past C projects.
TIA.

 

[Matt Humphrey]

Hello,
Been playing lately with the TCP and UDP sockets in the java.net
package, a question came up: using Java, can one reach the Ethernet
and the IP layers? In other words, is there a way to compose IP
datagrams and to compose ethenet frames?
I know you can play with the Datagram Socket/Packet classes to build
UDP connection, which is a bit more than an IP connection, but I'm
just keen on playing inside the IP level if this is possible in Java.
That was done in past C projects.
TIA.

No. Nor can you "ping." You have to use JNI to reach those services. Try
this: http://www.davidreilly.com/java/java_network_programming/#3.5

Cheers,
Matt Humphrey (e-mail address removed) http://www.iviz.com/

 

[Eli]

Heaps of thanks Matt,
The contents of that website will be my retreat for the next few days
Cheers,
Eli