Descarga de datos del Ibex 35 (¿y otros?) minuto a minuto en tiempo (casi) real

library(httr)
library(plyr)
 
base.url <- "http://www.infobolsa.es/1/wtdb/ChartIntraday"
 
res <- POST(base.url,
            body = list(mv = "M SAN",
                        date = "20160518",
                        compressionMult = 1,
                        isSession = 1))
 
dat <- content(res, as = "parsed",
                type = "application/json")
 
dat <- dat$answer$LST$TV$T09
dat <- ldply(dat, unlist)