isobit / arduino-nats Goto Github PK

The Arduino PubSubClient does a good job of this: https://github.com/knolleary/pubsubclient/tree/master/tests

Currently it's impossible to process the incoming data as a stream because at the time when the control is given to the callback function the data is already read to the buffer. Because of the limited memory on the embedded devices messages are limited at max to a few kilobytes.

It's also common to use predefined fixed size buffer that can be optionally given as parameter if the predefined size doesn't suit your needs. The memory limitations are easier to deal with if the memory consumption is predictable.

How about changing the message data to a function that reads the data to the buffer on demand when it's called and additionally exposing a read function that reads from the client until the the end of message is met? This way the data can processed as char array or as a stream.

Hi,
in your example, there is :

#include <ESP8266WiFi.h>

Could you find this library in PlatformIO ?
Thanks

Hi,
i make a new issue 1 to add your library to the PlatformIO environment.

can you write nats client to support esp-idf framework

Hi
I use the following example to connect to NATS server with ESP8266, but by adding a username and password, I can not connect to the server.
https://github.com/isobit/arduino-nats/blob/master/examples/blink/blink.ino

WiFiClient client;
NATS nats(
&client,
"iot-backend.isaan.ir", NATS_DEFAULT_PORT,
"emicro",
"xxxxxxxx"
);

I've added my username and password as above.
[2185] 2019/01/30 02:42:08.366138 [TRC] 192.168.12.64:60204 - cid:254 - <<- [-ERR authorization timeout]
[2185] 2019/01/30 02:42:08.366242 [DBG] 192.168.12.64:60204 - cid:254 - Authorization Timeout
[2185] 2019/01/30 02:42:08.366253 [DBG] 192.168.12.64:60204 - cid:254 - Client connection closed

I am unable to connect to a NATS server with TLS enabled. I tried using the WifiSecureClient but no luck. Can anyone help me connection with a TLS enabled NATS server and also possibly with client side certificate also

https://learn.adafruit.com/memories-of-an-arduino/optimizing-sram

Hi,
I am trying to publish an array of doubles by converting it to const char array using memcpy.
The problem is that if I set the array size bigger and bigger, the subscriber will get wrong data: about first 100 values are sent correctly, but from the next becomes garbage data.
After struggling, I came to a conclusion that there is a problem setting a message buffer when I'm trying to publish data too large.
So I suggest, could you add ability to publish message with the message length something like this:

void publish(const char* subject, const char* msg, int msg_length);

I appreciate your work.

One of my team is looking into adding NATS streaming support, and would like to share his changes (if you're interested). Our open source release process makes it difficult to contribute to projects without a license. Would you be willing to add one?