include/coap.h

@@ -63,6 +63,17 @@ typedef struct coap_message
  */
 coap_message_t coap_parse_message(uint8_t *data, uint16_t length);
 
+/**
+ * @brief Check if a CoAP message is a request.
+ * 
+ * A CoAP message is a request if its type is Confirmable or Non-Confirmable.
+ *
+ * @param coap_message CoAP message to check
+ * @return true if the given CoAP message is a request
+ * @return false if the given CoAP message is a response
+ */
+bool coap_is_request(coap_message_t coap_message);
+
 
 ///// DESTROY /////
 

src/coap.c

@@ -146,6 +146,20 @@ coap_message_t coap_parse_message(uint8_t *data, uint16_t length)
     return message;
 }
 
+/**
+ * @brief Check if a CoAP message is a request.
+ * 
+ * A CoAP message is a request if its type is Confirmable or Non-Confirmable.
+ *
+ * @param coap_message CoAP message to check
+ * @return true if the given CoAP message is a request
+ * @return false if the given CoAP message is a response
+ */
+bool coap_is_request(coap_message_t coap_message)
+{
+    return coap_message.type == COAP_CON || coap_message.type == COAP_NON;
+}
+
 
 ///// DESTROY /////
 

test/coap.c

@@ -45,6 +45,7 @@ void test_coap_non_get() {
     expected.uri = "/oic/res?rt=x.com.samsung.provisioninginfo";
 
     // Compare messages
+    CU_ASSERT_TRUE(coap_is_request(actual));
     CU_ASSERT_EQUAL(actual.type, expected.type);
     CU_ASSERT_EQUAL(actual.method, expected.method);
     CU_ASSERT_STRING_EQUAL(actual.uri, expected.uri);