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|
HEADER <- 256
PORT <- 6011
SERVER <- "localhost"
FORMAT <- "utf-8"
DISCONNECT_MESSAGE <- "!DISSCONNECT"
con <- socketConnection(
host = SERVER,
port = PORT,
server = FALSE
)
display_msg <- function(msg) {
cat(
'\033[94m',
msg,
sep = '',
end = '\033[0m\n'
)
}
send <- function(conn, msg) {
sendme <- paste(msg, strrep(" ", HEADER - nchar(msg)), sep = "")
writeChar(sendme, conn)
}
recv <- function(conn) {
suppressWarnings(msg <- trimws(readChar(conn, HEADER)))
while (length(msg) == 0) {
#cat('ALERT\n')
suppressWarnings(msg <- trimws(readChar(conn, HEADER)))
}
return(msg)
}
#receive target file path
file_path <- recv(con)
#load target file
source(file_path)
confirm <- TRUE
msg <- 'confirm'
while (msg != '!DISCONNECT') {
# there should be several handeling methods
# returning variables
# evaluating expressions
display_msg(msg)
val <- get(msg)
val <- as.character(val)
send(con, val)
msg <- recv(con)
}
close(con)
|
