Expand description
Information about the networking layer.
This module corresponds to the /proc/net
directory and contains various information about the
networking layer.
Example
Here’s an example that will print out all of the open and listening TCP sockets, and their corresponding processes, if know. This mimics the “netstat” utility, but for TCP only. You can run this example yourself with:
cargo run –example=netstat
let all_procs = procfs::process::all_processes().unwrap();
// build up a map between socket inodes and process stat info:
let mut map: HashMap<u64, Stat> = HashMap::new();
for p in all_procs {
let process = p.unwrap();
if let (Ok(stat), Ok(fds)) = (process.stat(), process.fd()) {
for fd in fds {
if let FDTarget::Socket(inode) = fd.unwrap().target {
map.insert(inode, stat.clone());
}
}
}
}
// get the tcp table
let tcp = procfs::net::tcp().unwrap();
let tcp6 = procfs::net::tcp6().unwrap();
println!("{:<26} {:<26} {:<15} {:<8} {}", "Local address", "Remote address", "State", "Inode", "PID/Program name");
for entry in tcp.into_iter().chain(tcp6) {
// find the process (if any) that has an open FD to this entry's inode
let local_address = format!("{}", entry.local_address);
let remote_addr = format!("{}", entry.remote_address);
let state = format!("{:?}", entry.state);
if let Some(stat) = map.get(&entry.inode) {
println!("{:<26} {:<26} {:<15} {:<12} {}/{}", local_address, remote_addr, state, entry.inode, stat.pid, stat.comm);
} else {
// We might not always be able to find the process associated with this socket
println!("{:<26} {:<26} {:<15} {:<12} -", local_address, remote_addr, state, entry.inode);
}
}
Structs
An entry in the ARP table
Flags for ARP entries
Hardware type for an ARP table entry.
General statistics for a network interface/device
An entry in the ipv4 route table
An entry in the TCP socket table
An entry in the UDP socket table
An entry in the Unix socket table
Enums
Functions
Reads the ARP table
Returns basic network device statistics for all interfaces
Reads TCP socket table from the provided reader
.
Reads UDP socket table from the provided reader
.
Reads the ipv4 route table
Reads the tcp socket table
Reads the tcp6 socket table
Reads the udp socket table
Reads the udp6 socket table
Reads the unix socket table