examples/gcoap_fileserver: add CoAP fileserver example

examples/gcoap_fileserver/Makefile

@@ -0,0 +1,35 @@
+# name of your application
+APPLICATION = gcoap_fileserver
+
+# If no BOARD is found in the environment, use this default:
+BOARD ?= native
+
+# This has to be the absolute path to the RIOT base directory:
+RIOTBASE ?= $(CURDIR)/../..
+
+# Comment this out to disable code in RIOT that does safety checking
+# which is not needed in a production environment but helps in the
+# development process:
+DEVELHELP ?= 1
+
+# Change this to 0 show compiler invocation lines by default:
+QUIET ?= 1
+
+# Modules to include:
+USEMODULE += shell
+USEMODULE += shell_commands
+
+# enable the fileserver module
+USEMODULE += gcoap_fileserver
+
+# select network modules
+USEMODULE += gnrc_ipv6_default
+USEMODULE += auto_init_gnrc_netif
+USEMODULE += netdev_default
+USEMODULE += gnrc_icmpv6_echo
+
+# enable default file system mount points
+USEMODULE += vfs_default
+# USEMODULE += vfs_auto_format
+
+include $(RIOTBASE)/Makefile.include

examples/gcoap_fileserver/main.c

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+/*
+ * Copyright (C) 2022 ML!PA Consulting GmbH
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup examples
+ * @{
+ *
+ * @file
+ * @brief Example application for demonstrating the GCoAP file server
+ *
+ * @author Benjamin Valentin <benjamin.valentin@ml-pa.com>
+ * @}
+ */
+
+#include "net/gcoap.h"
+#include "net/gcoap/fileserver.h"
+#include "shell.h"
+#include "vfs_default.h"
+
+#define MAIN_QUEUE_SIZE (4)
+static msg_t _main_msg_queue[MAIN_QUEUE_SIZE];
+
+static const gcoap_fileserver_entry_t _vfs_entry = {
+ .root = VFS_DEFAULT_DATA,
+ .resource = "/vfs",
+};
+
+/* CoAP resources. Must be sorted by path (ASCII order). */
+static const coap_resource_t _resources[] = {
+ { "/vfs", COAP_GET | COAP_MATCH_SUBTREE, gcoap_fileserver_handler, (void *)&_vfs_entry },
+};
+
+static gcoap_listener_t _listener = {
+ .resources = _resources,
+ .resources_len = ARRAY_SIZE(_resources),
+};
+
+int main(void)
+{
+ msg_init_queue(_main_msg_queue, MAIN_QUEUE_SIZE);
+ gcoap_register_listener(&_listener);
+
+ char line_buf[SHELL_DEFAULT_BUFSIZE];
+ shell_run(NULL, line_buf, SHELL_DEFAULT_BUFSIZE);
+
+ return 0;
+}