Oleg Hahm
7 years ago
6 changed files with 390 additions and 0 deletions
@ -0,0 +1,58 @@
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# name of your application
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APPLICATION = microcoap_server
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# If no BOARD is found in the environment, use this default:
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BOARD ?= native
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# This has to be the absolute path to the RIOT base directory:
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RIOTBASE ?= $(CURDIR)/../..
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BOARD_INSUFFICIENT_MEMORY := airfy-beacon chronos msb-430 msb-430h nrf51dongle \
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nrf6310 pca10000 pca10005 spark-core \
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stm32f0discovery telosb weio wsn430-v1_3b wsn430-v1_4 \
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yunjia-nrf51822 z1
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# Include packages that pull up and auto-init the link layer.
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# NOTE: 6LoWPAN will be included if IEEE802.15.4 devices are present
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USEMODULE += gnrc_netif_default
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USEMODULE += auto_init_gnrc_netif
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# Specify the mandatory networking modules for IPv6 and UDP
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USEMODULE += gnrc_ipv6_router_default
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USEMODULE += gnrc_udp
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# Add a routing protocol
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USEMODULE += gnrc_rpl
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# Additional networking modules that can be dropped if not needed
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USEMODULE += gnrc_icmpv6_echo
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#
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USEMODULE += gnrc_conn_udp
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USEPKG += microcoap
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CFLAGS += -DMICROCOAP_DEBUG
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# include this for printing IP addresses
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USEMODULE += shell_commands
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# Comment this out to disable code in RIOT that does safety checking
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# which is not needed in a production environment but helps in the
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# development process:
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#CFLAGS += -DDEVELHELP
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# Use different settings when compiling for one of the following (low-memory)
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# boards
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LOW_MEMORY_BOARDS := nucleo-f334
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ifneq (,$(filter $(BOARD),$(LOW_MEMORY_BOARDS))) |
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$(info Using low-memory configuration for microcoap_server.) |
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## low-memory tuning values
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# lower pktbuf buffer size
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CFLAGS += -DGNRC_PKTBUF_SIZE=1000
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# disable fib, rpl
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DISABLE_MODULE += fib gnrc_rpl
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USEMODULE += prng_minstd
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endif |
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# Change this to 0 show compiler invocation lines by default:
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QUIET ?= 1
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include $(RIOTBASE)/Makefile.include |
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@ -0,0 +1,62 @@
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microcoap server example |
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======================== |
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This application is meant to get you started with impementing a CoAP server on RIOT. |
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It uses the gnrc network stack through RIOT's conn socket API. |
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Usage |
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===== |
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To try on native, compile with |
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``` |
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# make all |
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``` |
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Then run the resulting binary, e.g., |
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``` |
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# make term |
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``` |
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The application is now listening on all it's configured IP addresses. |
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Now find out it's link\_layer address: |
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``` |
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$ make term |
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/home/kaspar/src/riot/examples/microcoap_server/bin/native/microcoap_server.elf tap0 |
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RIOT native interrupts/signals initialized. |
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LED_GREEN_OFF |
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LED_RED_ON |
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RIOT native board initialized. |
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RIOT native hardware initialization complete. |
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main(): This is RIOT! (Version: 2015.12-devel-632-g8f451-booze-add_conn_coap_example) |
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RIOT microcoap example application |
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Configured network interfaces: |
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Iface 5 HWaddr: fa:bf:2b:01:9e:a3 |
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MTU:1280 HL:64 |
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Source address length: 6 |
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Link type: wired |
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inet6 addr: ff02::1/128 scope: local [multicast] |
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inet6 addr: fe80::f8bf:2bff:fe01:9ea3/64 scope: local |
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inet6 addr: ff02::1:ff01:9ea3/128 scope: local [multicast] |
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inet6 addr: ff02::2/128 scope: local [multicast] |
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Waiting for incoming UDP packet... |
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``` |
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The link-layer address in this case is "fe80::f8bf:2bff:fe01:9ea3", the only |
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"scope: local" address set. |
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Connect using libcoap CLI |
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========================= |
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(replace "fe80::f8bf:2bff:fe01:9ea3" with your link-layer address) |
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``` |
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# coap-client coap://[fe80::f8bf:2bff:fe01:9ea3%tap0]/riot/board |
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``` |
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@ -0,0 +1,101 @@
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/*
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* Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de> |
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* |
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* This file is subject to the terms and conditions of the GNU Lesser |
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* General Public License v2.1. See the file LICENSE in the top level |
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* directory for more details. |
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*/ |
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#include <coap.h> |
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#include <string.h> |
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#define MAX_RESPONSE_LEN 500 |
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static uint8_t response[MAX_RESPONSE_LEN] = { 0 }; |
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static int handle_get_well_known_core(coap_rw_buffer_t *scratch, |
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const coap_packet_t *inpkt, |
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coap_packet_t *outpkt, |
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uint8_t id_hi, uint8_t id_lo); |
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static int handle_get_riot_board(coap_rw_buffer_t *scratch, |
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const coap_packet_t *inpkt, |
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coap_packet_t *outpkt, |
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uint8_t id_hi, uint8_t id_lo); |
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static const coap_endpoint_path_t path_well_known_core = |
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{ 2, { ".well-known", "core" } }; |
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static const coap_endpoint_path_t path_riot_board = |
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{ 2, { "riot", "board" } }; |
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const coap_endpoint_t endpoints[] = |
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{ |
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{ COAP_METHOD_GET, handle_get_well_known_core, |
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&path_well_known_core, "ct=40" }, |
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{ COAP_METHOD_GET, handle_get_riot_board, |
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&path_riot_board, "ct=0" }, |
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/* marks the end of the endpoints array: */ |
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{ (coap_method_t)0, NULL, NULL, NULL } |
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}; |
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static int handle_get_well_known_core(coap_rw_buffer_t *scratch, |
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const coap_packet_t *inpkt, coap_packet_t *outpkt, |
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uint8_t id_hi, uint8_t id_lo) |
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{ |
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char *rsp = (char *)response; |
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int len = sizeof(response); |
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const coap_endpoint_t *ep = endpoints; |
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int i; |
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len--; // Null-terminated string
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while (NULL != ep->handler) { |
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if (NULL == ep->core_attr) { |
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ep++; |
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continue; |
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} |
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if (0 < strlen(rsp)) { |
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strncat(rsp, ",", len); |
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len--; |
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} |
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strncat(rsp, "<", len); |
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len--; |
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for (i = 0; i < ep->path->count; i++) { |
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strncat(rsp, "/", len); |
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len--; |
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strncat(rsp, ep->path->elems[i], len); |
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len -= strlen(ep->path->elems[i]); |
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} |
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strncat(rsp, ">;", len); |
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len -= 2; |
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strncat(rsp, ep->core_attr, len); |
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len -= strlen(ep->core_attr); |
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ep++; |
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} |
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return coap_make_response(scratch, outpkt, (const uint8_t *)rsp, |
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strlen(rsp), id_hi, id_lo, &inpkt->tok, |
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COAP_RSPCODE_CONTENT, |
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COAP_CONTENTTYPE_APPLICATION_LINKFORMAT); |
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} |
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static int handle_get_riot_board(coap_rw_buffer_t *scratch, |
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const coap_packet_t *inpkt, coap_packet_t *outpkt, |
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uint8_t id_hi, uint8_t id_lo) |
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{ |
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const char *riot_name = RIOT_BOARD; |
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int len = strlen(RIOT_BOARD); |
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memcpy(response, riot_name, len); |
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return coap_make_response(scratch, outpkt, (const uint8_t *)response, len, |
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id_hi, id_lo, &inpkt->tok, COAP_RSPCODE_CONTENT, |
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COAP_CONTENTTYPE_TEXT_PLAIN); |
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} |
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@ -0,0 +1,47 @@
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/*
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* Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de> |
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* |
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* This file is subject to the terms and conditions of the GNU Lesser |
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* General Public License v2.1. See the file LICENSE in the top level |
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* directory for more details. |
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*/ |
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/**
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* @ingroup examples |
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* @{ |
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* |
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* @file |
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* @brief CoAP example server application (using microcoap) |
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* |
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* @author Kaspar Schleiser <kaspar@schleiser.de> |
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* @} |
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*/ |
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#include <stdio.h> |
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#include "msg.h" |
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#define MAIN_QUEUE_SIZE (8) |
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static msg_t _main_msg_queue[MAIN_QUEUE_SIZE]; |
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void microcoap_server_loop(void); |
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/* import "ifconfig" shell command, used for printing addresses */ |
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extern int _netif_config(int argc, char **argv); |
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int main(void) |
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{ |
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puts("RIOT microcoap example application"); |
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/* microcoap_server uses conn which uses gnrc which needs a msg queue */ |
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msg_init_queue(_main_msg_queue, MAIN_QUEUE_SIZE); |
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/* print network addresses */ |
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puts("Configured network interfaces:"); |
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_netif_config(0, NULL); |
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/* start coap server loop */ |
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microcoap_server_loop(); |
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/* should be never reached */ |
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return 0; |
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} |
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@ -0,0 +1,92 @@
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/*
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* Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de> |
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* |
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* This file is subject to the terms and conditions of the GNU Lesser |
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* General Public License v2.1. See the file LICENSE in the top level |
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* directory for more details. |
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*/ |
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#include "net/af.h" |
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#include "net/conn/udp.h" |
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#ifdef MICROCOAP_DEBUG |
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#define ENABLE_DEBUG (1) |
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#else |
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#define ENABLE_DEBUG (0) |
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#endif |
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#include "debug.h" |
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#include "coap.h" |
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static uint8_t _udp_buf[512]; /* udp read buffer (max udp payload size) */ |
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uint8_t scratch_raw[1024]; /* microcoap scratch buffer */ |
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coap_rw_buffer_t scratch_buf = { scratch_raw, sizeof(scratch_raw) }; |
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#define COAP_SERVER_PORT (5683) |
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/*
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* Starts a blocking and never-returning loop dispatching CoAP requests. |
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* |
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* When using gnrc, make sure the calling thread has an initialized msg queue. |
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*/ |
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void microcoap_server_loop(void) |
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{ |
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uint8_t laddr[16] = { 0 }; |
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uint8_t raddr[16] = { 0 }; |
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size_t raddr_len; |
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uint16_t rport; |
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conn_udp_t conn; |
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int rc = conn_udp_create(&conn, laddr, sizeof(laddr), AF_INET6, COAP_SERVER_PORT); |
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while (1) { |
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DEBUG("Waiting for incoming UDP packet...\n"); |
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rc = conn_udp_recvfrom(&conn, (char *)_udp_buf, sizeof(_udp_buf), raddr, &raddr_len, &rport); |
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if (rc < 0) { |
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DEBUG("Error in conn_udp_recvfrom(). rc=%u\n", rc); |
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continue; |
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} |
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size_t n = rc; |
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coap_packet_t pkt; |
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DEBUG("Received packet: "); |
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coap_dump(_udp_buf, n, true); |
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DEBUG("\n"); |
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/* parse UDP packet to CoAP */ |
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if (0 != (rc = coap_parse(&pkt, _udp_buf, n))) { |
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DEBUG("Bad packet rc=%d\n", rc); |
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} |
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else { |
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coap_packet_t rsppkt; |
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DEBUG("content:\n"); |
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coap_dumpPacket(&pkt); |
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/* handle CoAP request */ |
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coap_handle_req(&scratch_buf, &pkt, &rsppkt); |
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/* build reply */ |
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size_t rsplen = sizeof(_udp_buf); |
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if ((rc = coap_build(_udp_buf, &rsplen, &rsppkt)) != 0) { |
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DEBUG("coap_build failed rc=%d\n", rc); |
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} |
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else { |
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DEBUG("Sending packet: "); |
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coap_dump(_udp_buf, rsplen, true); |
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DEBUG("\n"); |
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DEBUG("content:\n"); |
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coap_dumpPacket(&rsppkt); |
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/* send reply via UDP */ |
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rc = conn_udp_sendto(_udp_buf, rsplen, NULL, 0, raddr, raddr_len, AF_INET6, COAP_SERVER_PORT, rport); |
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if (rc < 0) { |
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DEBUG("Error sending CoAP reply via udp; %u\n", rc); |
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} |
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} |
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} |
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} |
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} |
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@ -0,0 +1,30 @@
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From ac2d404d32d96a50a779ded7ad007f15bcf2b4b0 Mon Sep 17 00:00:00 2001
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From: Kaspar Schleiser <kaspar@schleiser.de>
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Date: Mon, 30 Nov 2015 02:11:12 +0100
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Subject: [PATCH] fix uninitialized variable
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coap.c: In function 'coap_build':
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coap.c:298:17: error: 'len' may be used uninitialized in this function
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[-Werror=maybe-uninitialized]
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uint8_t len, delta = 0;
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^
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---
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coap.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/coap.c b/coap.c
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index ada66c2..b6b05af 100644
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--- a/coap.c
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+++ b/coap.c
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@@ -295,7 +295,7 @@ int coap_build(uint8_t *buf, size_t *buflen, const coap_packet_t *pkt)
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for (i=0;i<pkt->numopts;i++)
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{
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uint32_t optDelta;
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- uint8_t len, delta = 0;
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+ uint8_t len = 0, delta = 0;
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if (((size_t)(p-buf)) > *buflen)
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return COAP_ERR_BUFFER_TOO_SMALL;
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--
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2.6.2
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