[PLAT-364] Add test re-using listening port

Author: raoulstrackx

fortanix-vme/ci-common.sh

@@ -110,7 +110,7 @@ function cargo_test {
         fi
 	RUST_BACKTRACE=full ${elf} -- --nocapture > ${out} 2> ${err}
 
-        out=$(cat ${out} | grep -v "#" || true)
+        out=$(cat ${out} | grep -v "^#" || true)
         expected=$(cat ./out.expected)
 
         if [ "${out}" == "${expected}" ]; then

fortanix-vme/tests/incoming_connection/out.expected

@@ -1,6 +1,15 @@
-Bind to socket to 3400
+Server run #1
+Bind TCP socket to port 3400
 Listening for incoming connections...
 Waiting for connection 1
 Connection 1: Connected
 Waiting for connection 2
 Connection 2: Connected
+Server run #2
+Bind TCP socket to port 3400
+Listening for incoming connections...
+Waiting for connection 1
+Connection 1: Connected
+Waiting for connection 2
+Connection 2: Connected
+Bye bye

fortanix-vme/tests/incoming_connection/src/main.rs

@@ -1,8 +1,8 @@
 use std::net::{IpAddr, Ipv4Addr, Shutdown, SocketAddr, TcpListener};
 use std::io::{Read, Write};
 
-fn main() {
-    println!("Bind to socket to 3400");
+fn server_run() {
+    println!("Bind TCP socket to port 3400");
     let listener = TcpListener::bind("127.0.0.1:3400").expect("Bind failed");
     assert_eq!(listener.local_addr().unwrap(), SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 3400));
 
@@ -28,3 +28,11 @@ fn main() {
         }
     }
 }
+
+fn main() {
+    for run in 1..=2 {
+        println!("Server run #{}", run);
+        server_run()
+    }
+    println!("Bye bye");
+}

fortanix-vme/tests/incoming_connection/test_interaction.sh

@@ -4,5 +4,5 @@ while [ true ]
 do
   echo "Interacting with test"
   timeout 1s curl -k localhost:3400 || true
-  sleep 20s
+  sleep 5s
 done