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Allow zero-length 'last-will' messages

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Sergio R. Caprile committed 2024-04-11 11:20:46 -03:00
1 parent 3c3c775213
commit 2ac3552e6e
2 files changed
+2 -2
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mongoose.c
+1 -1
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@@ -4333,7 +4333,7 @@ void mg_mqtt_login(struct mg_connection *c, const struct mg_mqtt_opts *opts) {
total_len += 2 + (uint32_t) opts->pass.len;
hdr[7] |= MQTT_HAS_PASSWORD;
}
if (opts->topic.len > 0 && opts->message.len > 0) {
if (opts->topic.len > 0) { // allow zero-length msgs, message.len is size_t
total_len += 4 + (uint32_t) opts->topic.len + (uint32_t) opts->message.len;
hdr[7] |= MQTT_HAS_WILL;
}
src/mqtt.c
+1 -1
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@@ -277,7 +277,7 @@ void mg_mqtt_login(struct mg_connection *c, const struct mg_mqtt_opts *opts) {
total_len += 2 + (uint32_t) opts->pass.len;
hdr[7] |= MQTT_HAS_PASSWORD;
}
if (opts->topic.len > 0 && opts->message.len > 0) {
if (opts->topic.len > 0) { // allow zero-length msgs, message.len is size_t
total_len += 4 + (uint32_t) opts->topic.len + (uint32_t) opts->message.len;
hdr[7] |= MQTT_HAS_WILL;
}