From fcc75c6a3ff7759afa6c2f5bf97d01eeaa381334 Mon Sep 17 00:00:00 2001
From: Ilia Penev <i.penev@allterco.com>
Date: Fri, 21 Oct 2016 13:52:21 +0200
Subject: [PATCH] Fix CoAP packet size calculation
PUBLISHED_FROM=43532ec3951779d17438b457fe6de6dea8f514fd
---
mongoose.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mongoose.c b/mongoose.c
index c0237a247..3b4d8bff3 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -9694,7 +9694,7 @@ static uint32_t coap_calculate_packet_size(struct mg_coap_message *cm,
prev_opt_number = 0;
while (opt != NULL) {
*len += 1; /* basic delta/length */
- *len += coap_get_ext_opt_size(opt->number);
+ *len += coap_get_ext_opt_size(opt->number - prev_opt_number);
*len += coap_get_ext_opt_size((uint32_t) opt->value.len);
/*
* Current implementation performs check if
@@ -9708,6 +9708,7 @@ static uint32_t coap_calculate_packet_size(struct mg_coap_message *cm,
return MG_COAP_ERROR | MG_COAP_OPTIOMG_FIELD;
}
*len += opt->value.len;
+ prev_opt_number = opt->number;
opt = opt->next;
}
--
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