hrbrmstr / netstat

Network statistics in R

The Netstat Package

netstat allows you to easily view which TCP ports are in use and which are free to use.

# install.packages("netstat")
library(netstat)

See which TCP ports are currently in use with ports_in_use()

ports_in_use()

##  [1] "23730" "55523" "45655" "12849" "55483" "55484" "55479" "55478"
##  [9] "55473" "55471" "55459" "55445" "55443" "55439" "55430" "10467"
## [17] "55149" "55036" "54938" "54913" "54902" "54898" "54845" "54844"
## [25] "49155" "54828" "54827" "54826" "54824" "27971" "13580" "49738"
## [33] "49383" "5432"  "1025"  "1024"  "45112" "30666" "49159" "49156"
## [41] "49154" "49153" "55507" "51979" "62106" "60186" "63708" "59480"
## [49] "5353"  "57549" "58386" "51128" "64194" "53821" "52458" "*"    
## [57] "49212" "53007" "52377" "138"   "137"

Find a free TCP port using free_port()

free_port()

## [1] 14415

• free_port() returns an available TCP port from Internet Assigned Numbers Authority (IANA) listed unassigned ports.

• free_port() will not return any TCP port currently in use - so free_port() can safely be used to allocate a ports programmatically without collisions - great for automated testing or browser automation in general