/man/receive.socket.Rd

\name{receive.socket}
\alias{receive.socket}
\alias{receive.null.msg}
\alias{receive.string}
\alias{receive.int}
\alias{receive.double}
\title{
Receive a message from the socket referenced by the socket argument .
}
\description{
The zmq_recv() function shall receive a message from the socket
referenced by the socket argument. If there are no messages available on the specified socket the function shall block until the request can be satisfied.
}
\usage{
receive.socket(socket, unserialize=TRUE)
receive.null.msg(socket)
receive.string(socket)
receive.int(socket)
receive.double(socket)
}

\arguments{
  \item{socket}{a zmq socket object}
  \item{unserialize}{whether to call unserialize on the received data}
}
\value{
  the value sent from the remote server or NULL on failure.
  or a logical for receive.null.msg indicating whether the msg was zero size.
}
\references{
http://www.zeromq.org
http://api.zeromq.org
http://zguide.zeromq.org/page:all
}
\author{
ZMQ was written by Martin Sustrik <sustrik@250bpm.com> and Martin Lucina <mato@kotelna.sk>.
rzmq was written by Whit Armstrong.
}
\seealso{
  \code{\link{connect.socket},\link{bind.socket},\link{receive.socket},\link{send.socket},\link{poll.socket}}
}
\examples{\dontrun{
library(rzmq)

remote.exec <- function(out.socket,in.socket,fun,...) {
    send.socket(out.socket,data=list(fun=fun,args=list(...)))
    receive.socket(in.socket)
}

context = init.context()
out.socket = init.socket(context,"ZMQ_PUSH")
bind.socket(out.socket,"tcp://*:5557")

in.socket = init.socket(context,"ZMQ_PULL")
bind.socket(in.socket,"tcp://*:5558")


myfun <- function(x) {
    sum(abs(x))
}

remote.exec(out.socket,in.socket,myfun,rnorm(1e3))

}}

\keyword{utilities}