133 lines
2.8 KiB
C
133 lines
2.8 KiB
C
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/*
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* coap.h
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*
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* Created on: Aug 25, 2010
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* Author: dogan
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*/
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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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/*COAP method types*/
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typedef enum {
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COAP_GET = 1,
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COAP_POST,
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COAP_PUT,
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COAP_DELETE
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} coap_method_t;
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typedef enum {
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MESSAGE_TYPE_CON,
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MESSAGE_TYPE_NON,
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MESSAGE_TYPE_ACK,
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MESSAGE_TYPE_RST
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} message_type;
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typedef enum {
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OK_200 = 80,
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CREATED_201 = 81,
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NOT_MODIFIED_304 = 124,
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BAD_REQUEST_400 = 160,
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NOT_FOUND_404 = 164,
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METHOD_NOT_ALLOWED_405 = 165,
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UNSUPPORTED_MADIA_TYPE_415 = 175,
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INTERNAL_SERVER_ERROR_500 = 200,
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BAD_GATEWAY_502 = 202,
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GATEWAY_TIMEOUT_504 = 204
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} status_code_t;
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typedef enum {
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Option_Type_Content_Type = 1,
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Option_Type_Max_Age = 2,
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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;
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typedef enum {
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TEXT_PLAIN = 0,
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TEXT_XML = 1,
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TEXT_CSV = 2,
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TEXT_HTML = 3,
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IMAGE_GIF = 21,
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IMAGE_JPEG = 22,
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IMAGE_PNG = 23,
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IMAGE_TIFF = 24,
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AUDIO_RAW = 25,
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VIDEO_RAW = 26,
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APPLICATION_LINK_FORMAT = 40,
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APPLICATION_XML = 41,
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APPLICATION_OCTET_STREAM = 42,
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APPLICATION_RDF_XML = 43,
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APPLICATION_SOAP_XML = 44,
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APPLICATION_ATOM_XML = 45,
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APPLICATION_XMPP_XML = 46,
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APPLICATION_EXI = 47,
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APPLICATION_X_BXML = 48,
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APPLICATION_FASTINFOSET = 49,
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APPLICATION_SOAP_FASTINFOSET = 50,
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APPLICATION_JSON = 51
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} content_type_t;
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#define COAP_HEADER_VERSION_MASK 0xC0
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#define COAP_HEADER_TYPE_MASK 0x30
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#define COAP_HEADER_OPTION_COUNT_MASK 0x0F
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#define COAP_HEADER_OPTION_DELTA_MASK 0xF0
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#define COAP_HEADER_OPTION_SHORT_LENGTH_MASK 0x0F
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#define COAP_HEADER_VERSION_POSITION 6
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#define COAP_HEADER_TYPE_POSITION 4
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#define COAP_HEADER_OPTION_DELTA_POSITION 4
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#define REQUEST_BUFFER_SIZE 200
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#define DEFAULT_CONTENT_TYPE 0
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#define DEFAULT_MAX_AGE 60
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#define DEFAULT_URI_AUTHORITY ""
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#define DEFAULT_URI_PATH ""
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//keep open requests and their xactid
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struct header_option_t
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{
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struct header_option_t* next;
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uint16_t option;
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uint16_t len;
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uint8_t* value;
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};
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typedef struct header_option_t header_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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uint8_t type; //2-bits Confirmable (0), Non-Confirmable (1), Acknowledgment (2) or Reset (3)
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uint8_t option_count; //4-bits
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uint8_t code; //8-bits Method or response code
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uint16_t tid; //16-bit unsigned integer
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header_option_t* options;
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char* url; //put it just as a shortcut or else need to parse options everytime to access it.
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uint16_t url_len;
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char* query;
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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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} coap_packet_t;
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/*error definitions*/
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typedef enum
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{
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NO_ERROR,
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/*Memory errors*/
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MEMORY_ALLOC_ERR,
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MEMORY_BOUNDARY_EXCEEDED
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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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#endif /* COAP_COMMON_H_ */
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