coap: create typedef for CoAP methods

sys/include/net/coap.h

@@ -85,7 +85,7 @@
  * Used in a CoAP request to signal that the request payload conveys both an
  * EDHOC message_3 and OSCORE protected data, combined together.
  *
  * @see [draft-ietf-core-oscore-edhoc-02](https://datatracker.ietf.org/doc/draft-ietf-core-oscore-edhoc/02/)
  */
 #define COAP_OPT_EDHOC (21)
 #define COAP_OPT_BLOCK2 (23)
@@ -163,14 +163,20 @@
  * @name CoAP method codes used in header
  * @{
  */
-#define COAP_CLASS_REQ (0)
-#define COAP_METHOD_GET (1)
-#define COAP_METHOD_POST (2)
-#define COAP_METHOD_PUT (3)
-#define COAP_METHOD_DELETE (4)
-#define COAP_METHOD_FETCH (5)
-#define COAP_METHOD_PATCH (6)
-#define COAP_METHOD_IPATCH (7)
+#define COAP_CLASS_REQ (0) /**< Code Class for Request */
+
+/**
+ * @brief CoAP method codes used in request
+ */
+typedef enum {
+ COAP_METHOD_GET = 1, /**< GET request (no paylod) */
+ COAP_METHOD_POST = 2, /**< POST request (resource processes payload) */
+ COAP_METHOD_PUT = 3, /**< PUT request (update resource with payload) */
+ COAP_METHOD_DELETE = 4, /**< DELETE request (no payload, remove resource)*/
+ COAP_METHOD_FETCH = 5, /**< FETCH request (RFC 8132) */
+ COAP_METHOD_PATCH = 6, /**< PATCH request (RFC 8132) */
+ COAP_METHOD_IPATCH = 7, /**< iPATCH request (RFC 8132) */
+} coap_method_t;
 /** @} */
 
 /**
@@ -348,7 +354,7 @@
 #define COAP_FORMAT_SWID_CBOR (258)
 /**
  * @brief Content-Type `application/pkixcmp`
  * @see [draft-ietf-ace-cmpv2-coap-transport](https://datatracker.ietf.org/doc/draft-ietf-ace-cmpv2-coap-transport/)
  * @see [RFC 4210](https://datatracker.ietf.org/doc/html/rfc4210)
  */
 #define COAP_FORMAT_PKIXCMP (259)
@@ -435,22 +441,22 @@
 #define COAP_FORMAT_YAML_DATA_CBOR_ID_NAME (341)
 /**
  * @brief Content-Type `application/td+json`
  * @see [Web of Things (WoT) Thing Description 1.1](https://www.w3.org/TR/wot-thing-description11/)
  */
 #define COAP_FORMAT_TD_JSON (432)
 /**
  * @brief Content-Type `application/tm+json`
  * @see [Web of Things (WoT) Thing Description 1.1](https://www.w3.org/TR/wot-thing-description11/)
  */
 #define COAP_FORMAT_TM_JSON (433)
 /**
  * @brief Content-Type `application/voucher-cose+cbor`
  * @see [draft-ietf-anima-constrained-voucher](https://datatracker.ietf.org/doc/draft-ietf-anima-constrained-voucher/)
  * @note Temporary registration until April 12, 2024.
  */
 #define COAP_FORMAT_VOUCER_COSE_CBOR (836)
 /**
  * @brief Content-Type `application/vnd.ocf+cbor`
  */
 #define COAP_FORMAT_VND_OCF_CBOR (10000)
 /**
@@ -482,17 +488,17 @@
 #define COAP_FORMAT_VND_OMA_LWM2M_TLV (11542)
 /**
  * @brief Content-Type `application/vnd.oma.lwm2m+json`
  * @see [OMA-TS-LightweightM2M-V1_0](https://www.openmobilealliance.org/release/LightweightM2M/V1_0-20170208-A/OMA-TS-LightweightM2M-V1_0-20170208-A.pdf)
  */
 #define COAP_FORMAT_VND_OMA_LWM2M_JSON (11543)
 /**
  * @brief Content-Type `application/vnd.oma.lwm2m+cbor`
  * @see [OMA-TS-LightweightM2M-V1_2](https://www.openmobilealliance.org/release/LightweightM2M/V1_2-20201110-A/HTML-Version/OMA-TS-LightweightM2M_Core-V1_2-20201110-A.html)
  */
 #define COAP_FORMAT_VND_OMA_LWM2M_CBOR (11544)
 /**
  * @brief Content-Type `text/css`
  * @see https://datatracker.ietf.org/doc/html/rfc2318
  */
 #define COAP_FORMAT_TEXT_CSS (20000)
 /**

sys/include/net/nanocoap_sock.h

@@ -205,7 +205,7 @@ typedef struct {
  nanocoap_sock_t *sock; /**< socket used for the request */
  const char *path; /**< path on the server */
  uint32_t blknum; /**< current block number */
- uint8_t method;  /**< request method (GET, POST, PUT) */
+ coap_method_t method; /**< request method (GET, POST, PUT) */
  uint8_t blksize; /**< CoAP blocksize exponent */
 } coap_block_request_t;
 
@@ -580,7 +580,7 @@ ssize_t nanocoap_request(coap_pkt_t *pkt, const sock_udp_ep_t *local,
 static inline int nanocoap_block_request_connect_url(coap_block_request_t *ctx,
  nanocoap_sock_t *sock,
  const char *url,
- uint8_t method,
+ coap_method_t method,
  coap_blksize_t blksize)
 {
  ctx->sock = sock;