Very Computer

> i have a small socket or linux problem: Can anybody tell me how to
> develope a socket application reading IP messages which are not directed
> to my pc (have an other IP adress)? I wrote a socket application, but it
> couldn't access IP-messages directed to other pcs in the network.

> thanks,

> Guido

> background:

> i want to program a "router", which sends IP-Messages through a small bus.
> Now i have a character device driver for this bus system and 2 linux
> systems connected with this network. Due to the complexity of kernel
> development I don't want to write a new linux network driver. so i decided
> to develope an application which has a thread for listening to a
> TCP/IP-socket from an ethernet card in the first PC and another thread for
> reading messages from the bus simultanously.

> pc1: 192.168.1.1     <----->    pc2: 192.168.1.2
>   ethernet card         IP        no ethernet card
>   my application     <----->      my application
>         |              BUS              |
> simple socket client            simple socket server

> 1.) the client trys to connect to the pc2, which is not in the ethernet
> network.
> 2.) my application notices this request...
> 3.) ... and sends it through the bus (with the character device driver
> functions)
> 4.) the application on the other side sends the message to the
> IP-network(maybe to the loopback device) and this way directly to the
> socket server.
> 5.) steps 1-4 in the other direction. pc2- pc1

> hab zu sp?t gemerkt, dass das hier ja eine deutsches Newsgroup ist...

>> Sorry,

>> hab zu sp?t gemerkt, dass das hier ja eine deutsches Newsgroup ist...

> where did you see that? did you crosspost to somewhere else? i was in the
> strong belief this was an english-speaking NG, until now at least...

> i have a small socket or linux problem: Can anybody tell me how to develope
> a socket application reading IP messages which are not directed to my pc
> (have an other IP adress)? I wrote a socket application, but it couldn't
> access IP-messages directed to other pcs in the network.

> thanks,

> Guido

> background:

> i want to program a "router", which sends IP-Messages through a small bus.
> Now i have a character device driver for this bus system and 2 linux
> systems connected with this network. Due to the complexity of kernel
> development I don't want to write a new linux network driver. so i decided
> to develope an application which has a thread for listening to a
> TCP/IP-socket from an ethernet card in the first PC and another thread for
> reading messages from the bus simultanously.

> pc1: 192.168.1.1     <----->    pc2: 192.168.1.2
>   ethernet card         IP        no ethernet card
>   my application     <----->      my application
>         |              BUS              |
> simple socket client            simple socket server

> 1.) the client trys to connect to the pc2, which is not in the ethernet
> network.
> 2.) my application notices this request...
> 3.) ... and sends it through the bus (with the character device driver
> functions)
> 4.) the application on the other side sends the message to the
> IP-network(maybe to the loopback device) and this way directly to the
> socket server.
> 5.) steps 1-4 in the other direction. pc2- pc1

> check out
> man 7 packet, and
> see if the option PACKET_OTHERHOST is what you want.
> there's an option to receive all packets (promiscuous mode).

> If this isn't what you want, you'll have to do some (not too much)
> kernel hacking with /src/linux/net/*