set IP address

[yolimau]

Hi everyone, i´m doing a DHCP service, but i have a problem, i can´t set the new IP address that the server give to client, i have treat with different classes, but the only thing that i can do is get de Ip address, but i need to set it in the client machine.

any idea?

thanks

[gcalvin]

You're implementing RFC 2131? What have you tried so far?

-Gary-

[Norm]

i can´t set the new IP address

Do you get any error messages?
What classes and methods are you using?

[yolimau]

hi, thanks for your answer

yes, i already read the RFC 2131, and the application do all the steps (discovery, offer, request, ...), but i´m programing both, server and client, so my client get all the server´s packets and the server get all the client´s packets.
it´s the all application, so i need to assign the ip

[yolimau]

hi Norm

"Do you get any error messages?
What classes and methods are you using?"

i don´t have any error, i have not found a method for set the ip in a computer

[gcalvin]

hi, thanks for your answer

yes, i already read the RFC 2131, and the application do all the steps (discovery, offer, request, ...), but i´m programing both, server and client, so my client get all the server´s packets and the server get all the client´s packets.
it´s the all application, so i need to assign the ip

OK, this is going to be specific to the host you're programming for. Is this some kind of embedded system? Please tell us a little more about your project that leads you to be writing a DHCP client in Java.

-Gary-

[yolimau]

OK, this is going to be specific to the host you're programming for. Is this some kind of embedded system? Please tell us a little more about your project that leads you to be writing a DHCP client in Java.

-Gary-

Ok, well my application it´s just a project for class, i´m studing, it´s for understand the way that a dhcp service works.

[gcalvin]

Ok, well my application it´s just a project for class, i´m studing, it´s for understand the way that a dhcp service works.

In that case, we're back to the fact that it's host-specific. You would probably need some C and JNI code, and it's going to be different for Windows, Mac OSX, Linux, etc. For illustration purposes, you could write a script and invoke it with System.exec().

-Gary-

[yolimau]

In that case, we're back to the fact that it's host-specific. You would probably need some C and JNI code, and it's going to be different for Windows, Mac OSX, Linux, etc. For illustration purposes, you could write a script and invoke it with System.exec().

-Gary-

so, you`re telling me that i have to set the ip by cmd commands?, opening a cmd in my application and set the ip things or something like that

[gcalvin]

so, you`re telling me that i have to set the ip by cmd commands?, opening a cmd in my application and set the ip things or something like that

Basically, yes. Either that, or write C code and Java Native Interface for each host type you would want to run this on. Java is not really a systems-level language -- it's application-level. Java tries to be platform-neutral, which means it can't get very involved in things that are platform-specific. It's also a privileged operation -- you'd need to be an Administrator to change your machine's IP address under most operating systems.

-Gary-

[yolimau]

Basically, yes. Either that, or write C code and Java Native Interface for each host type you would want to run this on. Java is not really a systems-level language -- it's application-level. Java tries to be platform-neutral, which means it can't get very involved in things that are platform-specific. It's also a privileged operation -- you'd need to be an Administrator to change your machine's IP address under most operating systems.

-Gary-

ok, thank you so much, i´m going to try that, i hope to have you news soon