Socketcand is a daemon that provides access to CAN interfaces on a machine via a network interface. The communication protocol uses a TCP/IP connection and a specific protocol to transfer CAN frames and control commands. The protocol specification can be found in ./doc/protocol.md.
To build and run socketcand make sure you have the following tools installed:
- gcc or another C compiler
- a kernel that includes the SocketCAN modules
- the headers for your kernel version
- the libconfig with headers (libconfig-dev under debian based systems)
to check your system and create the Makefile. If you want to install scripts for a init system other than SysVinit check the available settings with './configure -h'. To compile and install the socketcand run
$ make $ make install
The daemon uses a simple UDP beacon mechanism for service discovery. A beacon containing the service name, type and address is sent to the broadcast address (port 42000) at minimum every 3 seconds. A client only has to listen for messages of this type to detect all SocketCAN daemons in the local network.
socketcand [-v | --verbose] [-i interfaces | --interfaces interfaces] [-p port | --port port] [-l ip_addr | --listen interface] [-h | --help]
- -v activates verbose output to STDOUT
- -i interfaces is used to specify the SocketCAN interfaces the daemon shall provide access to
- -p port changes the default port (29536) the daemon is listening at
- -l interface changes the default network interface (eth0) the daemon will bind to
- -h prints a help message