Bug fix and added new features in coap.
This commit is contained in:
doganyazar
parent
c4f5ebcaaa
commit
ed6012b4ab
4 changed files with 232 additions and 63 deletions
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@ -25,7 +25,7 @@
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#include "coap-common.h"
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#define DEBUG 1
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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@ -37,7 +37,7 @@
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#define PRINTLLADDR(addr)
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#endif
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void initialize_packet(coap_packet_t* packet)
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void init_packet(coap_packet_t* packet)
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{
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packet->ver = 1;
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packet->type = 0;
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@ -50,6 +50,7 @@ void initialize_packet(coap_packet_t* packet)
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packet->query = NULL;
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packet->query_len = 0;
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packet->payload = NULL;
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packet->payload_len = 0;
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}
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int serialize_packet(coap_packet_t* packet, uint8_t* buffer)
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@ -8,7 +8,7 @@
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#ifndef COAP_COMMON_H_
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#define COAP_COMMON_H_
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#define PORT 61616
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#include "contiki-net.h"
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/*COAP method types*/
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typedef enum {
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@ -44,7 +44,11 @@ typedef enum {
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Option_Type_Etag = 4,
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Option_Type_Uri_Authority = 5,
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Option_Type_Location = 6,
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Option_Type_Uri_Path = 9
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Option_Type_Uri_Path = 9,
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Option_Type_Subscription_Lifetime = 10,
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Option_Type_Token = 11,
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Option_Type_Block = 13,
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Option_Type_Uri_Query = 15
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} option_type;
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typedef enum {
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@ -100,6 +104,13 @@ struct header_option_t
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};
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typedef struct header_option_t header_option_t;
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struct block_option_t {
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uint32_t number;
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uint8_t more;
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uint8_t size;
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};
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typedef struct block_option_t block_option_t;
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typedef struct
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{
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uint8_t ver; //2-bits currently set to 1.
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@ -114,6 +125,7 @@ typedef struct
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uint16_t query_len;
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uint16_t payload_len;
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uint8_t* payload;
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uip_ipaddr_t addr;
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} coap_packet_t;
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/*error definitions*/
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@ -127,6 +139,6 @@ typedef enum
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} error_t;
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int serialize_packet(coap_packet_t* request, uint8_t* buffer);
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void initialize_packet(coap_packet_t* packet);
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void init_packet(coap_packet_t* packet);
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#endif /* COAP_COMMON_H_ */
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@ -4,9 +4,10 @@
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#include "contiki.h"
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#include "contiki-net.h"
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#include "rest.h"
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#include "buffer.h"
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#include "coap-server.h"
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#include "rest-util.h"
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#include "rest.h" /*added for periodic_resource*/
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#include "dev/leds.h"
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@ -14,7 +15,7 @@
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#include "static-routing.h"
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#endif
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#define DEBUG 1
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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@ -31,6 +32,8 @@
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#define UIP_UDP_BUF ((struct uip_udp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
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static struct uip_udp_conn *server_conn;
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static uint16_t current_tid;
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static service_callback service_cbk = NULL;
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void
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@ -39,18 +42,18 @@ coap_set_service_callback(service_callback callback)
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service_cbk = callback;
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}
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static void
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void
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parse_message(coap_packet_t* packet, uint8_t* buf, uint16_t size)
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{
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int processed=0;
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int i=0;
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int processed = 0;
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int i = 0;
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PRINTF("parse_message size %d-->\n",size);
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initialize_packet(packet);
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init_packet(packet);
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packet->ver = (buf[0]&COAP_HEADER_VERSION_MASK)>>COAP_HEADER_VERSION_POSITION;
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packet->type = (buf[0]&COAP_HEADER_TYPE_MASK)>>COAP_HEADER_TYPE_POSITION;
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packet->option_count = buf[0]&COAP_HEADER_OPTION_COUNT_MASK;
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packet->ver = (buf[0] & COAP_HEADER_VERSION_MASK) >> COAP_HEADER_VERSION_POSITION;
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packet->type = (buf[0] & COAP_HEADER_TYPE_MASK) >> COAP_HEADER_TYPE_POSITION;
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packet->option_count = buf[0] & COAP_HEADER_OPTION_COUNT_MASK;
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packet->code = buf[1];
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packet->tid = (buf[2] << 8) + buf[3];
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@ -66,12 +69,12 @@ parse_message(coap_packet_t* packet, uint8_t* buf, uint16_t size)
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if (packet->options) {
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header_option_t* current_option = packet->options;
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header_option_t* prev_option = NULL;
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while(option_index < packet->option_count){
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while(option_index < packet->option_count) {
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/*FIXME : put boundary controls*/
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option_delta = (option_buf[i] & COAP_HEADER_OPTION_DELTA_MASK) >> COAP_HEADER_OPTION_DELTA_POSITION;
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option_len = (option_buf[i] & COAP_HEADER_OPTION_SHORT_LENGTH_MASK);
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i++;
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if(option_len == 0xf){
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if (option_len == 0xf) {
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option_len += option_buf[i];
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i++;
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}
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@ -79,14 +82,14 @@ parse_message(coap_packet_t* packet, uint8_t* buf, uint16_t size)
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current_option->option = option_delta;
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current_option->len = option_len;
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current_option->value = option_buf + i;
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if (option_index){
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if (option_index) {
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prev_option->next = current_option;
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/*This field defines the difference between the option Type of
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* this option and the previous option (or zero for the first option)*/
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current_option->option += prev_option->option;
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}
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if (current_option->option == Option_Type_Uri_Path){
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if (current_option->option == Option_Type_Uri_Path) {
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packet->url = (char*)current_option->value;
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packet->url_len = current_option->len;
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}
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@ -164,10 +167,10 @@ allocate_header_option(uint16_t variable_len)
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}
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/*FIXME : does not overwrite the same option yet.*/
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static int
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set_option(coap_packet_t* packet, option_type option_type, uint16_t len, uint8_t* value)
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int
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coap_set_option(coap_packet_t* packet, option_type option_type, uint16_t len, uint8_t* value)
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{
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PRINTF("set_option len %u\n", len);
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PRINTF("coap_set_option len %u\n", len);
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header_option_t* option = allocate_header_option(len);
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if (option){
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option->next = NULL;
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@ -209,23 +212,21 @@ set_option(coap_packet_t* packet, option_type option_type, uint16_t len, uint8_t
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return 0;
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}
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static uint8_t*
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get_option(coap_packet_t* packet, option_type option_type)
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header_option_t*
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coap_get_option(coap_packet_t* packet, option_type option_type)
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{
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uint8_t* value = NULL;
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int i=0;
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PRINTF("coap_get_option count: %u--> \n", packet->option_count);
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int i = 0;
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header_option_t* current_option = packet->options;
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for (; packet->option_count; i++){
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if (current_option->option >= option_type){
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if (current_option->option == option_type){
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value = current_option->value;
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}
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break;
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for (; i < packet->option_count; current_option = current_option->next, i++) {
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PRINTF("Current option: %u\n", current_option->option);
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if (current_option->option == option_type){
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return current_option;
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}
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}
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return value;
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return NULL;
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}
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static void
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@ -249,15 +250,26 @@ fill_error_packet(coap_packet_t* packet, int error, uint16_t tid)
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static void
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init_response(coap_packet_t* request, coap_packet_t* response)
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{
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initialize_packet(response);
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if(request->type == MESSAGE_TYPE_CON)
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{
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init_packet(response);
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if(request->type == MESSAGE_TYPE_CON) {
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response->code = OK_200;
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response->tid = request->tid;
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response->type = MESSAGE_TYPE_ACK;
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}
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}
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uint16_t
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coap_get_payload(coap_packet_t* packet, uint8_t** payload)
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{
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if (packet->payload) {
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*payload = packet->payload;
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return packet->payload_len;
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} else {
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*payload = NULL;
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return 0;
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}
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}
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int
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coap_set_payload(coap_packet_t* packet, uint8_t* payload, uint16_t size)
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{
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@ -275,63 +287,152 @@ coap_set_header_content_type(coap_packet_t* packet, content_type_t content_type)
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{
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uint16_t len = 1;
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return set_option(packet, Option_Type_Content_Type, len, (uint8_t*) &content_type);
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return coap_set_option(packet, Option_Type_Content_Type, len, (uint8_t*) &content_type);
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}
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content_type_t
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coap_get_header_content_type(coap_packet_t* packet)
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{
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uint8_t* value = get_option(packet, Option_Type_Content_Type);
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if(value){
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return (uint8_t)*value;
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header_option_t* option = coap_get_option(packet, Option_Type_Content_Type);
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if (option){
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return (uint8_t)(*(option->value));
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}
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return DEFAULT_CONTENT_TYPE;
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}
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int
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coap_get_header_subscription_lifetime(coap_packet_t* packet, uint32_t* lifetime)
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{
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PRINTF("coap_get_header_subscription_lifetime --> \n");
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header_option_t* option = coap_get_option(packet, Option_Type_Subscription_Lifetime);
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if (option){
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PRINTF("Subs Found len %u (first byte %u)\n", option->len, (uint16_t)option->value[0]);
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*lifetime = read_int(option->value, option->len);
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return 1;
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}
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return 0;
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}
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int
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coap_set_header_subscription_lifetime(coap_packet_t* packet, uint32_t lifetime)
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{
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uint8_t temp[4];
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uint16_t len = write_variable_int(temp, lifetime);
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return coap_set_option(packet, Option_Type_Subscription_Lifetime, len, temp);
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}
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int
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coap_get_header_block(coap_packet_t* packet, block_option_t* block)
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{
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uint32_t all_block;
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PRINTF("coap_get_header_block --> \n");
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header_option_t* option = coap_get_option(packet, Option_Type_Block);
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if (option){
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PRINTF("Block Found len %u (first byte %u)\n", option->len, (uint16_t)option->value[0]);
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all_block = read_int(option->value, option->len);
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block->number = all_block >> 4;
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block->more = (all_block & 0x8) >> 3;
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block->size = (all_block & 0x7);
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return 1;
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}
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return 0;
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}
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int
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coap_set_header_block(coap_packet_t* packet, uint32_t number, uint8_t more, uint8_t size)
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{
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uint8_t temp[4];
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size = log_2(size/16);
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number = number << 4;
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number |= (more << 3) & 0x8;
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number |= size & 0x7;
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uint16_t len = write_variable_int(temp, number);
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PRINTF("number %lu, more %u, size %u block[0] %u block[1] %u block[2] %u block[3] %u\n",
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number, (uint16_t)more, (uint16_t)size, (uint16_t)temp[0], (uint16_t)temp[1], (uint16_t)temp[2], (uint16_t)temp[3]);
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return coap_set_option(packet, Option_Type_Block, len, temp);
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}
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int
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coap_set_header_uri(coap_packet_t* packet, char* uri)
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{
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return set_option(packet, Option_Type_Uri_Path, strlen(uri), (uint8_t*) uri);
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return coap_set_option(packet, Option_Type_Uri_Path, strlen(uri), (uint8_t*) uri);
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}
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int
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coap_set_header_etag(coap_packet_t* packet, uint8_t* etag, uint8_t size)
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{
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return set_option(packet, Option_Type_Etag, size, etag);
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return coap_set_option(packet, Option_Type_Etag, size, etag);
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}
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void
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coap_set_code(coap_packet_t* packet, uint8_t code)
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coap_set_code(coap_packet_t* packet, status_code_t code)
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{
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packet->code = code;
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packet->code = (uint8_t)code;
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}
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coap_method_t
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coap_get_method(coap_packet_t* packet)
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{
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return (coap_method_t)packet->code;
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}
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void
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coap_set_method(coap_packet_t* packet, coap_method_t method)
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{
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packet->code = (uint8_t)method;
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}
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static void send_request(coap_packet_t* request, struct uip_udp_conn *client_conn)
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{
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char buf[MAX_PAYLOAD_LEN];
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int data_size = 0;
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data_size = serialize_packet(request, buf);
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PRINTF("Created a connection with the server ");
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PRINT6ADDR(&client_conn->ripaddr);
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PRINTF(" local/remote port %u/%u\n",
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uip_htons(client_conn->lport), uip_htons(client_conn->rport));
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PRINTF("Sending to: ");
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PRINT6ADDR(&client_conn->ripaddr);
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uip_udp_packet_send(client_conn, buf, data_size);
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}
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static int
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handle_data(void)
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handle_incoming_data(void)
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{
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int error=NO_ERROR;
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char buf[MAX_PAYLOAD_LEN];
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printf("uip_datalen received %u \n",(u16_t)uip_datalen());
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PRINTF("uip_datalen received %u \n",(u16_t)uip_datalen());
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char* data = uip_appdata + uip_ext_len;
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u16_t datalen = uip_datalen() - uip_ext_len;
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int data_size = 0;
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if(uip_newdata()) {
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if (uip_newdata()) {
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((char *)data)[datalen] = 0;
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PRINTF("Server received: '%s' (port:%u) from ", (char *)data, uip_htons(UIP_UDP_BUF->srcport));
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PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
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PRINTF("\n");
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if(init_buffer(COAP_DATA_BUFF_SIZE)) {
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/*FIXME need to get rid of Request here since now COAP depends on REST layer.*/
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if (init_buffer(COAP_DATA_BUFF_SIZE)) {
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coap_packet_t* request = (coap_packet_t*)allocate_buffer(sizeof(coap_packet_t));
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parse_message(request, (uint8_t*)data, datalen);
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if(request->type != MESSAGE_TYPE_ACK) {
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uip_ipaddr_copy(&request->addr, &UIP_IP_BUF->srcipaddr);
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if (request->type != MESSAGE_TYPE_ACK) {
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coap_packet_t* response = (coap_packet_t*)allocate_buffer(sizeof(coap_packet_t));
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init_response(request, response);
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@ -340,6 +441,7 @@ handle_data(void)
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}
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data_size = serialize_packet(response, buf);
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}
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delete_buffer();
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} else {
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@ -354,7 +456,7 @@ handle_data(void)
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uip_ipaddr_copy(&server_conn->ripaddr, &UIP_IP_BUF->srcipaddr);
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server_conn->rport = UIP_UDP_BUF->srcport;
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PRINTF("Responding with message size: %d",data_size);
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PRINTF("Responding with message size: %d\n",data_size);
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uip_udp_packet_send(server_conn, buf, data_size);
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/* Restore server connection to allow data from any node */
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memset(&server_conn->ripaddr, 0, sizeof(server_conn->ripaddr));
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@ -364,6 +466,15 @@ handle_data(void)
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return error;
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}
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process_event_t resource_changed_event;
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void
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resource_changed(struct periodic_resource_t* resource)
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{
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process_post(&coap_server, resource_changed_event, (process_data_t)resource);
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}
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/*---------------------------------------------------------------------------*/
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PROCESS(coap_server, "Coap Server");
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@ -378,17 +489,47 @@ PROCESS_THREAD(coap_server, ev, data)
|
|||
configure_routing();
|
||||
#endif /*!UIP_CONF_IPV6_RPL*/
|
||||
|
||||
current_tid = random_rand();
|
||||
|
||||
resource_changed_event = process_alloc_event();
|
||||
|
||||
/* new connection with remote host */
|
||||
server_conn = udp_new(NULL, uip_htons(0), NULL);
|
||||
udp_bind(server_conn, uip_htons(MOTE_PORT));
|
||||
PRINTF("Local/remote port %u/%u\n",
|
||||
uip_htons(server_conn->lport), uip_htons(server_conn->rport));
|
||||
udp_bind(server_conn, uip_htons(MOTE_SERVER_LISTEN_PORT));
|
||||
PRINTF("Local/remote port %u/%u\n", uip_htons(server_conn->lport), uip_htons(server_conn->rport));
|
||||
|
||||
while(1) {
|
||||
PROCESS_YIELD();
|
||||
|
||||
if(ev == tcpip_event) {
|
||||
handle_data();
|
||||
handle_incoming_data();
|
||||
} else if (ev == resource_changed_event) {
|
||||
periodic_resource_t* resource = (periodic_resource_t*)data;
|
||||
PRINTF("resource_changed_event \n");
|
||||
|
||||
if (init_buffer(COAP_DATA_BUFF_SIZE)) {
|
||||
coap_packet_t* request = (coap_packet_t*)allocate_buffer(sizeof(coap_packet_t));
|
||||
init_packet(request);
|
||||
coap_set_code(request, COAP_GET);
|
||||
request->tid = current_tid++;
|
||||
coap_set_header_subscription_lifetime(request, resource->lifetime);
|
||||
coap_set_header_uri(request, (char *)resource->resource->url);
|
||||
if (resource->periodic_request_generator) {
|
||||
resource->periodic_request_generator(request);
|
||||
}
|
||||
|
||||
if (!resource->client_conn) {
|
||||
/*FIXME send port is fixed for now to 61616*/
|
||||
resource->client_conn = udp_new(&resource->addr, uip_htons(61616), NULL);
|
||||
udp_bind(resource->client_conn, uip_htons(MOTE_CLIENT_LISTEN_PORT));
|
||||
}
|
||||
|
||||
if (resource->client_conn) {
|
||||
send_request(request, resource->client_conn);
|
||||
}
|
||||
|
||||
delete_buffer();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1,33 +1,45 @@
|
|||
/*
|
||||
* coap-server.h
|
||||
*
|
||||
* Created on: Oct 4, 2010
|
||||
* Author: dogan
|
||||
*/
|
||||
|
||||
#ifndef COAPSERVER_H_
|
||||
#define COAPSERVER_H_
|
||||
|
||||
#define COAP_DATA_BUFF_SIZE 300
|
||||
|
||||
#include "contiki.h"
|
||||
#include "coap-common.h"
|
||||
|
||||
/*Declare process*/
|
||||
PROCESS_NAME(coap_server);
|
||||
|
||||
#define MOTE_PORT 61616
|
||||
#define MOTE_SERVER_LISTEN_PORT 61616
|
||||
#define MOTE_CLIENT_LISTEN_PORT 61617
|
||||
|
||||
void parse_message(coap_packet_t* packet, uint8_t* buf, uint16_t size);
|
||||
|
||||
uint16_t coap_get_payload(coap_packet_t* packet, uint8_t** payload);
|
||||
int coap_set_payload(coap_packet_t* packet, uint8_t* payload, uint16_t size);
|
||||
|
||||
content_type_t coap_get_header_content_type(coap_packet_t* packet);
|
||||
int coap_set_header_content_type(coap_packet_t* packet, content_type_t content_type);
|
||||
|
||||
int coap_get_header_subscription_lifetime(coap_packet_t* packet, uint32_t* lifetime);
|
||||
int coap_set_header_subscription_lifetime(coap_packet_t* packet, uint32_t lifetime);
|
||||
|
||||
int coap_get_header_block(coap_packet_t* packet, block_option_t* block);
|
||||
int coap_set_header_block(coap_packet_t* packet, uint32_t number, uint8_t more, uint8_t size);
|
||||
|
||||
int coap_set_header_uri(coap_packet_t* packet, char* uri);
|
||||
int coap_set_header_etag(coap_packet_t* packet, uint8_t* etag, uint8_t size);
|
||||
void coap_set_code(coap_packet_t* packet, uint8_t code);
|
||||
|
||||
void coap_set_code(coap_packet_t* packet, status_code_t code);
|
||||
|
||||
coap_method_t coap_get_method(coap_packet_t* packet);
|
||||
void coap_set_method(coap_packet_t* packet, coap_method_t method);
|
||||
|
||||
int coap_get_query_variable(coap_packet_t* packet, const char *name, char* output, uint16_t output_size);
|
||||
int coap_get_post_variable(coap_packet_t* packet, const char *name, char* output, uint16_t output_size);
|
||||
|
||||
header_option_t* coap_get_option(coap_packet_t* packet, option_type option_type);
|
||||
int coap_set_option(coap_packet_t* packet, option_type option_type, uint16_t len, uint8_t* value);
|
||||
|
||||
/*Type definition of the service callback*/
|
||||
typedef int (*service_callback) (coap_packet_t* request, coap_packet_t* response);
|
||||
|
||||
|
|
@ -36,4 +48,7 @@ typedef int (*service_callback) (coap_packet_t* request, coap_packet_t* response
|
|||
*/
|
||||
void coap_set_service_callback(service_callback callback);
|
||||
|
||||
struct periodic_resource_t;
|
||||
void resource_changed(struct periodic_resource_t* resource);
|
||||
|
||||
#endif /* COAPSERVER_H_ */
|
||||
|
|
|
|||
Loading…
Reference in a new issue