pbdZMQ (version 0.2-4)

Send Receive Multiple Raw Buffers: Send Receive Multiple Raw Buffers

Description

Send and receive functions for multiple raw buffers

Usage

zmq.send.multipart(socket, parts, serialize = TRUE)
zmq.recv.multipart(socket, unserialize = TRUE)

Arguments

socket

a ZMQ socket

parts

a vector of multiple buffers to be sent

serialize, unserialize

if serialize/unserialize the received multiple buffers

Value

zmq.send.multipart() returns.zmq.recv.multipart() returns.

Details

zmq.send.multipart() is a high level R function to send multiple raw messages parts at once.

zmq.recv.multipart() is a high level R function to receive multiple raw messages at once.

References

ZeroMQ/4.1.0 API Reference: http://api.zeromq.org/4-1:_start

Programming with Big Data in R Website: http://r-pbd.org/

See Also

zmq.msg.send(), zmq.msg.recv().

Examples

## Not run: 
# ### Using request-reply pattern.
# 
# ### At the server, run next in background or the other window.
# library(pbdZMQ, quietly = TRUE)
# 
# context <- zmq.ctx.new()
# responder <- zmq.socket(context, .pbd_env$ZMQ.ST$REP)
# zmq.bind(responder, "tcp://*:5555")
# 
# ret <- zmq.recv.multipart(responder, unserialize = TRUE)
# parts <- as.list(rep("World", 5))
# zmq.send.multipart(responder, parts)
# for(i in 1:5) cat(ret[[i]])
# 
# zmq.close(responder)
# zmq.ctx.destroy(context)
# 
# ### At a client, run next in foreground.
# library(pbdZMQ, quietly = TRUE)
# 
# context <- zmq.ctx.new()
# requester <- zmq.socket(context, .pbd_env$ZMQ.ST$REQ)
# zmq.connect(requester, "tcp://localhost:5555")
# 
# parts <- lapply(1:5, function(i.req){ paste("Sending Hello ", i.req, "\n") })
# zmq.send.multipart(requester, parts)
# ret <- zmq.recv.multipart(requester, unserialize = TRUE)
# print(ret)
# 
# zmq.close(requester)
# zmq.ctx.destroy(context)
# ## End(Not run)