Exit if idle time expires waiting for a connection in one-off mode. e…

…snet#1187 (esnet#1197)

src/iperf3.1

@@ -195,7 +195,13 @@ run in server mode
 run the server in background as a daemon
 .TP
 .BR -1 ", " --one-off
-handle one client connection, then exit.
+handle one client connection, then exit.  If an idle time is set, the
+server will exit after that amount of time with no connection.
+.TP
+.BR --idle-timeout " \fIn\fR"
+restart the server after \fIn\fR seconds in case it gets stuck.  In
+one-off mode, this is the number of seconds the server will wait
+before exiting.
 .TP
 .BR --server-bitrate-limit " \fIn\fR[KMGT]"
 set a limit on the server side, which will cause a test to abort if

src/iperf_server_api.c

@@ -525,6 +525,13 @@ iperf_run_server(struct iperf_test *test)
                             printf("Server restart (#%d) in idle state as no connection request was received for %d sec\n",
                                 test->server_forced_idle_restarts_count, test->settings->idle_timeout);
                         cleanup_server(test);
+			if ( iperf_get_test_one_off(test) ) {
+			  if (test->debug)
+                            printf("No connection request was received for %d sec in one-off mode; exiting.\n",
+				   test->settings->idle_timeout);
+			  exit(0);
+			}
+
                         return 2;
                     }
                 }