nanonext (version 0.1.0)

recv: Receive

Description

Receive serialised data over a Socket. For sending and receiving within R.

Usage

recv(socket, block = FALSE, keep.raw = TRUE)

Arguments

socket

a Socket.

block

[default FALSE] logical flag whether to block until successful or return immediately even if unsuccessful (e.g. nothing to receive).

keep.raw

[default TRUE] TRUE to keep the received raw vector (useful for verification e.g. via hashing). If FALSE, will return the unserialised object only.

Value

Named list of 2 elements: 'raw' containing the received raw vector and 'data' containing the unserialised R object, or else the unserialised R object if 'keep.raw' is set to FALSE.

Details

In case of an error in unserialisation (e.g. the data was not sent serialised), the function will still return the received raw vector to allow the data to be recovered.

Examples

# NOT RUN {
s1 <- socket("bus", listen = "inproc://nanonext")
s2 <- socket("bus", dial = "inproc://nanonext")

send(s1, data.frame(a = 1, b = 2))
res <- recv(s2)
res

send(s1, data.frame(a = 1, b = 2), echo = FALSE)
recv(s2, keep.raw = FALSE)

close(s1)
close(s2)

# }