tools: Simple echo application

This adds a simple echo application written to show application how to
use the API. It also updates the dev.h header file with the insights
gained from performing this excercise.

1 files changed, 57 insertions, 0 deletions

diff --git a/src/tools/echo/echo.c b/src/tools/echo/echo.c
new file mode 100644
index 00000000..849c0ca8
--- /dev/null
+++ b/src/tools/echo/echo.c
@@ -0,0 +1,57 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * A simple echo application
+ *
+ *    Sander Vrijders <sander.vrijders@intec.ugent.be>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#define SERVER_AP_NAME "echo-server"
+#define BUF_SIZE 256
+
+#include "echo_client.c"
+#include "echo_server.c"
+
+static void usage()
+{
+        printf("Usage: echo-app [OPTION]...\n"
+               "Sends an echo between a server and a client\n\n"
+               "  -l, --listen              Run in server mode\n"
+               "      --help                Display this help text and exit\n");
+}
+
+int main(int argc, char ** argv) {
+
+        argc--;
+        argv++;
+        while (argc > 0) {
+                if (strcmp(*argv, "-l") == 0 ||
+                    strcmp(*argv, "--listen") == 0) {
+                        return server_main();
+                } else {
+                        usage();
+                        return 0;
+                }
+                argc--;
+                argv++;
+        }
+
+        return client_main();
+}