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List network connections of a process

Source: R/low-level.R
ps_connections.Rd

For a zombie process it throws a zombie_process error.

Usage

ps_connections(p = ps_handle())

Arguments

p

Process handle.

Value

Data frame, with columns:

  • fd: integer file descriptor on POSIX systems, NA on Windows.

  • family: Address family, string, typically AF_UNIX, AF_INET or AF_INET6.

  • type: Socket type, string, typically SOCK_STREAM (TCP) or SOCK_DGRAM (UDP).

  • laddr: Local address, string, NA for UNIX sockets.

  • lport: Local port, integer, NA for UNIX sockets.

  • raddr: Remote address, string, NA for UNIX sockets. This is always NA for AF_INET sockets on Linux.

  • rport: Remote port, integer, NA for UNIX sockets.

  • state: Socket state, e.g. CONN_ESTABLISHED, etc. It is NA for UNIX sockets.

See also

Other process handle functions: ps_children(), ps_cmdline(), ps_cpu_times(), ps_create_time(), ps_cwd(), ps_descent(), ps_environ(), ps_exe(), ps_handle(), ps_interrupt(), ps_is_running(), ps_kill(), ps_memory_info(), ps_name(), ps_num_fds(), ps_num_threads(), ps_open_files(), ps_pid(), ps_ppid(), ps_resume(), ps_send_signal(), ps_shared_libs(), ps_status(), ps_suspend(), ps_terminal(), ps_terminate(), ps_uids(), ps_username()

Examples

p <- ps_handle()
ps_connections(p)
#> # A data frame: 4 × 8
#>      fd family  type        laddr       lport raddr       rport state           
#>   <int> <chr>   <chr>       <chr>       <int> <chr>       <int> <chr>           
#> 1     2 AF_UNIX SOCK_STREAM NA             NA NA             NA NA              
#> 2     1 AF_UNIX SOCK_STREAM NA             NA NA             NA NA              
#> 3    17 AF_INET SOCK_STREAM 10.2.74.220 45286 3.170.51.57    80 CONN_ESTABLISHED
#> 4    16 AF_INET SOCK_STREAM 10.2.74.220 48840 3.170.51.75   443 CONN_ESTABLISHED
sc <- socketConnection("httpbin.org", port = 80)
ps_connections(p)
#> # A data frame: 5 × 8
#>      fd family  type        laddr       lport raddr       rport state           
#>   <int> <chr>   <chr>       <chr>       <int> <chr>       <int> <chr>           
#> 1     2 AF_UNIX SOCK_STREAM NA             NA NA             NA NA              
#> 2     1 AF_UNIX SOCK_STREAM NA             NA NA             NA NA              
#> 3    19 AF_INET SOCK_STREAM 10.2.74.220 42322 54.211.60.7    80 CONN_ESTABLISHED
#> 4    17 AF_INET SOCK_STREAM 10.2.74.220 45286 3.170.51.57    80 CONN_ESTABLISHED
#> 5    16 AF_INET SOCK_STREAM 10.2.74.220 48840 3.170.51.75   443 CONN_ESTABLISHED
close(sc)
ps_connections(p)
#> # A data frame: 4 × 8
#>      fd family  type        laddr       lport raddr       rport state           
#>   <int> <chr>   <chr>       <chr>       <int> <chr>       <int> <chr>           
#> 1     2 AF_UNIX SOCK_STREAM NA             NA NA             NA NA              
#> 2     1 AF_UNIX SOCK_STREAM NA             NA NA             NA NA              
#> 3    17 AF_INET SOCK_STREAM 10.2.74.220 45286 3.170.51.57    80 CONN_ESTABLISHED
#> 4    16 AF_INET SOCK_STREAM 10.2.74.220 48840 3.170.51.75   443 CONN_ESTABLISHED