retry port_test if we encounter a timeout then return false

lib/kadeploy3/server/port_scanner.rb

@@ -35,11 +35,15 @@ module PortScanner
 
   # Test if a node accept or refuse connections on every ports of a list (TCP)
   def self.ports_test(nodeid, ports, accept=true)
+    max_retry = 2
+    current_retry = 0
     ret = true
     ports.each do |port|
       begin
-        s = TCPSocket.open(nodeid, port)
-        s.close
+        Timeout.timeout(5) do
+          s = TCPSocket.open(nodeid, port)
+          s.close
+        end
         unless accept
           ret = false
           break
@@ -52,6 +56,15 @@ module PortScanner
       rescue Errno::EHOSTUNREACH
         ret = false
         break
+      rescue Timeout::Error
+        # We want to retry if we encounter a timeout
+        if current_retry >= max_retry
+          ret = false
+          break
+        end
+        current_retry += 1
+        sleep(1)
+        redo
       end
     end
     ret