Completed the network bandwidth test function using iperf3; adjusted Cargo.toml a bit to allow patch updates for dependencies

src/benchmarks/network.rs

@@ -1,5 +1,4 @@
-use chrono::prelude::*;
-use std::{fs,process};
+use std::process;
 
 use crate::text;
 
@@ -60,23 +59,20 @@ pub fn jitter_test(address: &str, count: &u16) {
 }
 
 // timed file copy test to guage bandwidth speeds
-pub fn bandwidth_test(download: &str, output: &str) {
-    println!("Testing network bandwidth by downloading {}.", download);
+pub fn bandwidth_test(host: &str) {
+    println!("Testing network bandwidth using iperf; connecting to {}.", host);
+    println!("{}", host);
 
-    // get start time so we can track how long it takes to complete
-    let start_time = Utc::now();
+    let output = process::Command::new("iperf3")
+        .arg("-c")
+        .arg(host)
+        .output()
+        .expect("Failed to execute command");
 
-    // do the download
+    // check that the command succeeded
+    assert!(output.status.success());
 
-    // get finish time
-    let finish_time = Utc::now();
-    // compute time to complete
-    let comp_time = finish_time - start_time;
-    println!("{}", comp_time.num_milliseconds());
-
-    // clean up the test file
-    match fs::remove_file(output) {
-        Ok(()) => println!("Cleaning up..."),
-        Err(e) => println!("There was a problem during cleanup - {}", e),
-    }
+    // grab and print the command's results
+    let results_raw = &String::from_utf8_lossy(&output.stdout);
+    println!("{}", results_raw);
 }