examples/wget: wget example to work without NSH_NETINIT config

- Network initialization codes are not needed
  with NSH_NETINIT config.
- Suppport commandline argument to set the URL to get.
- Change stack size to independent

examples/wget/Kconfig

@@ -12,14 +12,22 @@ config EXAMPLES_WGET
 
 if EXAMPLES_WGET
 
+config EXAMPLES_WGET_STACKSIZE
+	int "wget stack size"
+	default DEFAULT_TASK_STACKSIZE
+	---help---
+		Stack size of "wget" command. If you use SSL connection,
+		you should increase this value around 8096.
+
 config EXAMPLES_WGET_URL
 	string "File URL"
 	default ""
 	---help---
-	The URL of the file to get
+		The URL of the file to get
 
 config EXAMPLES_WGET_NOMAC
 	bool "Use Canned MAC Address"
+	depends on !NSH_NETINIT
 	default n
 
 config EXAMPLES_WGET_IPADDR

examples/wget/Makefile

@@ -41,7 +41,7 @@ MAINSRC = wget_main.c
 
 PROGNAME = wget
 PRIORITY = SCHED_PRIORITY_DEFAULT
-STACKSIZE = $(CONFIG_DEFAULT_TASK_STACKSIZE)
+STACKSIZE = $(CONFIG_EXAMPLES_WGET_STACKSIZE)
 MODULE = $(CONFIG_EXAMPLES_WGET)
 
 include $(APPDIR)/Application.mk

examples/wget/wget_main.c

@@ -108,6 +108,7 @@ static void callback(FAR char **buffer, int offset, int datend,
 
 int main(int argc, FAR char *argv[])
 {
+#ifndef CONFIG_NSH_NETINIT
   struct in_addr addr;
 #if defined(CONFIG_EXAMPLES_WGET_NOMAC)
   uint8_t mac[IFHWADDRLEN];
@@ -145,9 +146,18 @@ int main(int argc, FAR char *argv[])
    */
 
   netlib_ifup("eth0");
+#endif /* CONFIG_NSH_NETINIT */
 
   /* Then start the server */
 
-  wget(CONFIG_EXAMPLES_WGET_URL, g_iobuffer, 512, callback, NULL);
+  if (argc > 1)
+    {
+      wget(argv[1], g_iobuffer, 512, callback, NULL);
+    }
+  else
+    {
+      wget(CONFIG_EXAMPLES_WGET_URL, g_iobuffer, 512, callback, NULL);
+    }
+
   return 0;
 }