On Wed, Dec 14, 2016 at 10:34 PM, <ellio...@gmail.com> wrote: > Hello All, > > I am looking for a little bit of advice for making a new client library > for SocketCAN > <https://www.kernel.org/doc/Documentation/networking/can.txt>sockets in > Linux. > > Low level support for SockaddrCAN was just added to /x/sys/unix ( > https://github.com/golang/go/issues/16188) and now I want to make a nice > user level library to make things easier. > > It is fairly common to require read/write timeouts on the socket, this > means that it would be ideal to implement the net.Conn interface with > support for Set*Deadline, however I am struggling with the best way to do > this. I can see 3 options, and hopefully someone here has some ideas which > would be best (or something completely different that I didn't think of). > > > 1. I could just implement all the deadlines myself by using unix.Poll > to check for activity on the file descriptor before I do a read/write > (basically the old C method). This seems like the easiest, however I am > unsure how the go runtime will like it if I have a bunch of goroutines all > sitting in unix.Poll system calls, not going through the "netpoller". > 2. I could copy out the relevant code from the "net" package, > including fd_unix.go <https://golang.org/src/net/fd_unix.go>, > fd_poll_runtime.go <https://golang.org/src/net/fd_poll_runtime.go>, > fd_mutex.go <https://golang.org/src/net/fd_mutex.go>, and perhaps a > few others. This seems like it will quickly take me down the rabbit hole, > as the I think I might end up having to copy quite a large portion of the > package into my own. > 3. I could just fork the net library as an internal dependency and > then create a CANConn type inside it. I am currently leaning towards this > idea, but I have the nagging suspicion that it is actually a really dumb > idea for reasons that I am just too ignorant to know. > > Anybody have any suggestions? >
not a suggestion, but a shameless plug and an offer to work on: https://godoc.org/github.com/go-daq/canbus :) I haven't dealt with a nice net.Conn like interface and just went with a Socket-like interface, pretty much like the one from https://github.com/go-mangos/mangos. hth, -s > > Thanks, > > Elliot > > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
