How to code:client/server using Unix domain socket/tcp on Ubuntu?

[Constantine Vasil]

How to create unified client and server code working in:

1) same machine: Unix domain socket

2) different machines: tcp

--Constantine

 

[al...@lx.lc]

You're going to have to either ask more targeted questions about where you're stuck, and/or post a valiant effort I think before more people will be willing to help you on this list.  

There are tons of client/server examples out on the internet - just search for them (ex. golang tcp server client).

As a nudge(and, in case this shows up in a search result one day) , here's the documentation for the net package which includes a full tcp listener example - http://golang.org/pkg/net/

Here's some discussion AND code for unix sockets - http://stackoverflow.com/questions/2886719/unix-sockets-in-go

Good luck, and post back if you have any questions after you've given it a shot.

Regards,

Alex

[Constantine Vasil]

Alex,

Thank you for your help.

I have experience with tcp but don't have any with Unix domain sockets. 

--Constantine

[Constantine Vasil]

On the server:

ListenType := "unix"

ListenAddr := "/tmp/MyCall.sock"

ln, err := net.Listen(ListenType, ListenAddr)

On the client:

c, err := net.Dial(ListenType, address)

Got the message:

address already in use

[Constantine Vasil]

Alex,

I gave it a shot and as I suspected it is not working because the link is too old.

Here's some discussion AND code for unix sockets - http://stackoverflow.com/questions/2886719/unix-sockets-in-go

is from Jan 21 '11 at 13:21

this does not compile:

c, err := net.Dial(ListenType, "", address)

error: too many arguments

--Constantine

[al...@lx.lc]

Just remove the middle argument.   There are a few other nuances - err.String() should be err.Error(), but otherwise, the code in the first answer there works fine.

Regards,

Alex

[Constantine Vasil]

Got the message:

address already in use

[al...@lx.lc]

Because the file exists.  Remove the file manually, then make your server clean it up properly upon exit.

Thanks,

Alex

[DisposaBoy]

just put an at sign in front of the.path. e.g. @/tmp/... and or will be automatically cleaned up for you

[Constantine Vasil]

The file was created automatically