[R] newbie: closing unused connection + readline

[Gabor Grothendieck]

Try explicitly closing it:

close(reader.socket)

or

closeAllConnections()

On Sat, May 16, 2009 at 8:34 AM, Aval Sarri <aval.sarri at gmail.com> wrote:
> Hello;
> I am new to R and trying to read a line from socket connection at a
> time but at the end of script I am getting "closing unused connection"
> warning. I am not able to understand how to solve this. I want to read
> a line from socket and then use read.table/scan on that line but it
> looks like I am opening multiple connections instead of just one.  I
> think I am doing something wrong or not able to understand correct
> method of doing this.
>
> ---------------------------code------------------------
> # Create a socket from which to read lines - one at a time (record)
> reader.socket <-   socketConnection( host = 'localhost', 5000,
>                                     server = TRUE, blocking = TRUE,
>                                     open = "r", encoding =
> getOption("encoding") );
> # now read each record and split/validate it using read.table
> repeat {
>  # here for each line I am opening new connection! how to avoid it?
>  line.raw <- textConnection(readLines( reader.socket, n = 1, ok = TRUE));
>  line.raw <- read.table(line.raw, sep=",");
>
>  if ( length(line.raw) <  1)
>    break;
>
>  print (showConnections());
>  print(warnings());
> }
>
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