[R] read.socket utils package : somthing is going wrong

[msalese]

Hi everyone,
I'd appreciate if someone could help me to understand what is happening.

I'm attempting to connect R to the broker platform using tcp on localhost
5333.
Just to learn how use make.socket, write.socket, ..functions  I wrote simple
code:

#prepare string command to subscribe ask and bid price on Italian stock
#this should be a push stream like:
#First stream: 
#outcome=OK|item=MI.EQCON.2552
#Update stream:
#MI.EQCON.1|21|10|22|11|23|12|24|5|20|19|7.5
#MI.EQCON.2552|||||||||||7.3
#..................................................
#until the buffer is full.
msg2<-'function=subscribe|item=MI.EQCON.1|schema=ask1;bid1'

#open socket connection
socketPointer<-make.socket(host='localhost',port=5333,fail=TRUE,server=FALSE)

#send the command line
write.socket(socket=socketPointer,string=msg2)

#read data
read.socket(socket=socketPointer,maxlen=252,loop=FALSE)

#send command to unsuscribe
write.socket(socket=sockPointer,string=unsub)

#close socket
close.socket(sockPointer)

The code remain stick on read.socket function, so I decided to use debug
functionality:
This is the read.socket source:

debugging in: read.socket(socket = s.p, maxlen = 252, loop = FALSE)
debug: {
    if (length(port <- as.integer(socket$socket)) != 1L) 
        stop("invalid 'socket' argument")
    maxlen <- as.integer(maxlen)
    buffer <- paste(rep.int("#", maxlen), collapse = "")
    repeat {
        tmp <- .C("Rsockread", port, buffer = buffer, len = maxlen, 
            PACKAGE = "base")
        rval <- substr(tmp$buffer, 1L, tmp$len)
        if (nzchar(rval) || !loop) 
            break
    }
    rval
}

everything works fine up to  .C("Rsockread", port, buffer = buffer, len =
maxlen, PACKAGE = "base")
when execution arrive to the c function call R goes in a some kind a eternal
loop !

Thanks very much
Massimo Salese

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