Comments (4)
I've added a fix for this in readPacket which I believe does most of the job. If the read buffer is very small (less than the header + length of remaining length, between 0 and 5) then that could still be a problem, but buffers of that size are not very useful anyway.
from paho.mqtt.embedded-c.
Yes, this library seems to have many buffer overflows and other similar issues, I would not recommend using it when you don't trust your endpoint.
from paho.mqtt.embedded-c.
I found the problem too. When read buffer is not enough, I disgard the rest data. Here is the main codes
/* erase useless data */
read_bytes = 0;
while (read_bytes < rem_len || expired(timer))
{
read_bytes += c->ipstack->mqttread(c->ipstack,
c->readbuf,
min(c->readbuf_size, rem_len - read_bytes),
left_ms(timer));
}
from paho.mqtt.embedded-c.
Hi Teams,
I'm using paho mqtt client with NUCLEO STM32 board,
I fixed the KeepAlive Interval to 30 min (1800s) and yield(100), but, after 9 hours the client has disconnected.
any help please
thanks a lot
from paho.mqtt.embedded-c.
Related Issues (20)
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- Does this library support mqtt v5? HOT 6
- Memory corruptions when casting enum to `int *` HOT 1
- Client never closes socket HOT 2
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- keepalive failed by calling MQTTYield with short timeout and short interval. HOT 4
- Potential OOB Writes in eclipse/paho.mqtt.embedded-c
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from paho.mqtt.embedded-c.