mongoose/docs/c-api/mg_coap.h/mg_coap_add_option.md

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---
title: "mg_coap_add_option()"
decl_name: "mg_coap_add_option"
symbol_kind: "func"
signature: |
struct mg_coap_option *mg_coap_add_option(struct mg_coap_message *cm,
uint32_t number, char *value,
size_t len);
---
Adds a new option to mg_coap_message structure.
Returns pointer to the newly created option.
Note: options must be freed by using mg_coap_free_options