CoAP Client using nRF9160: proxy-uri length issueshttps://devzone.nordicsemi.com/f/nordic-q-a/69738/coap-client-using-nrf9160-proxy-uri-length-issuesHi Nordic Team, I am developing a CoAP client on the nRF9160 DK, and am having trouble with longer proxy-uri&#39;s; short URIs ( 268 characters and below ) work fine and the coap message reaches the server as expected. However, messages with longer proxyen-USTelligent Community 13Sun, 10 Jan 2021 09:58:29 GMTRE: CoAP Client using nRF9160: proxy-uri length issueshttps://devzone.nordicsemi.com/thread/288271?ContentTypeID=1Sun, 10 Jan 2021 09:58:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a89baa3f-cd35-40f6-9738-464ba939dafeAchim Kraus<p>That seems to be an bug in coap.c of v 1.4.1. It affect options with lengths larger than 268.</p> <div class="s-prose js-post-body" itemprop="text"> <p>coap.c, line 221, uses &quot;delta_size&quot; instead of &quot;len_size&quot;.</p> <pre><code>if (len_size == 1U) { res = append_u8(cpkt, (uint8_t)len_ext); if (!res) { return -EINVAL; } } else if (delta_size == 2U) { res = append_be16(cpkt, len_ext); if (!res) { return -EINVAL; } } </code></pre> <p></p> <p>See <a href="https://github.com/zephyrproject-rtos/zephyr/issues/31206">github.com/.../31206</a></p> </div><div style="clear:both;"></div>