Dear All,
I’m running the latest version of Loraserver, and from time to time, I’m getting error message reported as :
application/2/device/deveui/error
with the following error message in the payload : “CODEC”,“error”:“execution timeout”
most go the time, messages are properly decoded and this error occur randomly
Any suggestion
Thanks in advance for your help
What device and codec do you use ?
I’m using my own device and a custom codec, codec is working properly, but from time to time, I’m having and execution timeout error, this is related to the following :
// CodecMaxExecTime holds the max. time the (custom) codec is allowed to
// run.
var CodecMaxExecTime = 10 * time.Millisecond
into the custom_js.go file
If one of you would like to contribute with a pull-request, this would be fairly easy to move to the configuration file 
I’m not too familiar with this SW and not sure to be able to make such pull-request, if someone can help and train me that would be appreciated
Anyway, I would be surprised that this small piece of decode function would take more than 10ms to execute on a quad core running at 1.2 Ghz with 2G of DDR
function Decode(fPort, bytes) {
var decoded = {};
decoded.cmd = bytes[0];
if (decoded.cmd === 16 || decoded.cmd === 32 || decoded.cmd === 48)
{
decoded.hours = bytes[1];
decoded.minutes = bytes[2];
var index = 4;
var pair = true;
var header = bytes[3];
if (header & 0x80)
{
decoded.pio0Event = bytes[index];
index += 1;
}
if (header & 0x40)
{
decoded.pio1Event = bytes[index];
index += 1;
}
if (header & 0x20)
{
if (pair )
{
decoded.pio2Event = (bytes[index]*16 + (bytes[index+1] & 0xF0)/16);
index += 1;
pair = false;
} else {
decoded.pio2Event = (bytes[index+1] + (bytes[index] & 0x0F)*256);
index += 2;
pair = true;
}
}
if (header & 0x10)
{
if (pair )
{
decoded.pio3Event = (bytes[index]*16 + (bytes[index+1] & 0xF0)/16);
index += 1;
pair = false;
} else {
decoded.pio3Event = (bytes[index+1] + (bytes[index] & 0x0F)*256);
index += 2;
pair = true;
}
}
if (header & 0x08)
{
if (pair )
{
decoded.intTemp = ((bytes[index]*16 + (bytes[index+1] & 0xF0)/16)/16);
index += 1;
pair = false;
} else {
decoded.intTemp = ((bytes[index+1] + (bytes[index] & 0x0F)*256)/16);
index += 2;
pair = true;
}
}
if (header & 0x04)
{
if (pair )
{
decoded.extTemp = (bytes[index]*16 + (bytes[index+1] & 0xF0)/16);
index += 1;
pair = false;
} else {
decoded.extTemp = (bytes[index+1] + (bytes[index] & 0x0F)*256);
index += 2;
pair = true;
}
}
if (header & 0x02)
{
if (pair )
{
decoded.Vbat = (bytes[index]*16 + (bytes[index+1] & 0xF0)/16);
index += 1;
pair = false;
} else {
decoded.Vbat = (bytes[index+1] + (bytes[index] & 0x0F)*256);
index += 2;
pair = true;
}
}
if (header & 0x01)
{
if (pair )
{
decoded.Vext = (bytes[index]*16 + (bytes[index+1] & 0xF0)/16);
index += 1;
pair = false;
} else {
decoded.Vext = (bytes[index+1] + (bytes[index] & 0x0F)*256);
index += 2;
pair = true;
}
}
}
if (decoded.cmd === 00)
{
decoded.config_exist = bytes[1];
decoded.hours = bytes[2];
decoded.minutes = bytes[3];
decoded.guardTimeDay = bytes[4];
decoded.guardTimeNight = bytes[5];
decoded.KeepAliveValue = bytes[6];
decoded.pio0EventThresholdDay = bytes[7];
decoded.pio0EventThresholdNight = bytes[8];
decoded.pio1EventThresholdDay =bytes[9];
decoded.pio1EventThresholdNight = bytes[10];
decoded.pio2EventThresholdDay = (bytes[11]*16 + (bytes[12] & 0xF0)/16);
decoded.pio2EventThresholdNight = (bytes[13] + (bytes[12] & 0x0F)*256);
decoded.pio3EventThresholdDay = (bytes[14]*16 + (bytes[15] & 0xF0)/16);
decoded.pio3EventThresholdNight = (bytes[16] + (bytes[15] & 0x0F)*256);
decoded.nightStartHours = bytes[17];
decoded.nightStartMinutes = bytes[18];
decoded.dayStartHours = bytes[19];
decoded.dayStartMinutes = bytes[20];
decoded.en_Register = bytes[21];
}
return decoded;
}
Anyone can help me how to contribute with a pull request ?
Thanks in advance
Did anybody experienced this CODEC execution time out ?
I’ve made tests with a “smaller” codec and do not see anymore time out.
When installing from scratch the 2.X version, I have no CODEC execution time out,
When upgrading from 1.X to 2.X :
Well, I’ve experienced same behavior. Some frames are no decoded due to “execution timeout”.
// Decode decodes an array of bytes into an object.
// - fPort contains the LoRaWAN fPort number
// - bytes is an array of bytes, e.g. [225, 230, 255, 0]
// The function must return an object, e.g. {"temperature": 22.5}
function Decode(fPort, bytes) {
function timestamp_generator(secondsTakenOff) {
var date = new Date();
date.setUTCSeconds(date.getUTCSeconds() - secondsTakenOff);
return date.toISOString();
}
var header = bytes[0] >> 6;
switch(header) {
case 0:
pressure = (bytes[0] & 63) << 6 | bytes[1] >> 2;
humidity = (bytes[1] & 3) << 5 | bytes[2] >> 3;
height_1 = (bytes[2] & 7) << 9 | bytes[3] << 1 | bytes[4] >> 7;
height_1_delta_1 = (bytes[4] & 127) << 1 | bytes[5] >> 7;
height_2 = (bytes[5] & 127) << 5 | bytes[6] >> 3;
height_2_delta_2 = (bytes[6] & 7) << 5 | bytes[7] >> 3;
temperature = (bytes[7] & 7) << 7 | bytes[8] >> 1;
temperature_delta_1 = (bytes[8] & 1) << 7 | bytes[9] >> 1;
temperature_delta_2 = (bytes[9] & 1) << 7 | bytes[10] >> 1;
temperature_delta_3 = (bytes[10] & 1) << 7 | bytes[11] >> 1;
return {"frameType":"mesure", "pressure":{"value": pressure, "timestamp": timestamp_generator(0)}, "humidity":{"value":humidity, "timestamp": timestamp_generator(0)}, "height_1":{"value": height_1, "timestamp": timestamp_generator(0)}, "height_1_delta_1":{"value": height_1_delta_1, "timestamp":timestamp_generator(225)}, "height_2":{"value": height_2, "timestamp": timestamp_generator(450)}, "height_2_delta_2":{"value": height_2_delta_2, "timestamp": timestamp_generator(675)}, "temperature":{"value":temperature, "timestamp":timestamp_generator(0)}, "temperature_delta_1":{"value": temperature_delta_1, "timestamp":timestamp_generator(225)}, "temperature_delta_2":{"value": temperature_delta_2, "timestamp": timestamp_generator(450)}, "temperature_delta_3":{"value": temperature_delta_3, "timestamp": timestamp_generator(675)}};
case 1:
pressure = (bytes[0] & 63) << 6 | bytes[1] >> 2;
humidity = (bytes[1] & 3) << 5 | bytes[2] >> 3;
temperature = (bytes[2] & 7) << 7 | bytes[3] >> 1;
battery = (bytes[3] & 1) << 9 | bytes[4] << 1 | bytes[5] >> 7;
accelerometer_X = (bytes[5] & 126);
accelerometer_Y = (bytes[5] & 1) << 5 | bytes[6] >> 3;
accelerometer_Z = (bytes[6] & 7) << 3 | bytes[7] >> 5;
return {"frameType":"status", "pressure":{"value": pressure, "timestamp":timestamp_generator(0)}, "humidity":{"value": humidity, "timestamp":timestamp_generator(0)}, "temperature":{"value": temperature, "timestamp":timestamp_generator(0)}, "battery":{"value": battery, "timestamp":timestamp_generator(0)}, "accelerometer_X":{"value": accelerometer_X, "timestamp":timestamp_generator(0)}, "accelerometer_Y":{"value": accelerometer_Y, "timestamp":timestamp_generator(0)}, "accelerometer_Z":{"value": accelerometer_Z, "timestamp":timestamp_generator(0)}};
case 2:
pressure = (bytes[0] & 63) << 6 | bytes[1] >> 2;
humidity = (bytes[1] & 3) << 5 | bytes[2] >> 3;
temperature = (bytes[2] & 7) << 7 | bytes[3] >> 1;
battery = (bytes[3] & 1) << 9 | bytes[4] << 1 | bytes[5] >> 7;
accelerometer_X = (bytes[5] & 126);
accelerometer_Y = (bytes[5] & 1) << 5 | bytes[6] >> 3;
accelerometer_Z = (bytes[6] & 7) << 3 | bytes[7] >> 5;
height_1 = (bytes[7] & 31) << 7 | bytes[8] >> 1;
return {"frameType":"status", "pressure":{"value": pressure, "timestamp":timestamp_generator(0)}, "humidity":{"value": humidity, "timestamp":timestamp_generator(0)}, "temperature":{"value": temperature, "timestamp":timestamp_generator(0)}, "battery":{"value": battery, "timestamp":timestamp_generator(0)}, "accelerometer_X":{"value": accelerometer_X, "timestamp":timestamp_generator(0)}, "accelerometer_Y":{"value": accelerometer_Y, "timestamp":timestamp_generator(0)}, "accelerometer_Z":{"value": accelerometer_Z, "timestamp":timestamp_generator(0)}, "height_1":{"value": height_1, "timestamp":timestamp_generator(0)}};
}
}
I can’t reinstall from scratch.
BTW, in my return “case 0”, I take several time the current time. And it varies from 0 to 3 milliseconds. So my entire code could actually run in more than 10 ms. Is there a reason to limit the decoding to 10 ms ?
PS : @brocaar what do you want from us to Pull-request ?
wherer to set CodecMaxExecTime in the configuration file
If one of you would like to make a pull-request to make this configurable, that would be great
E.g.
[application_server.codecs.js]
max_exec_time="10ms"
How solve this!!!
All my custom payloads get this error. With cayenne payload works great but not pass all the data like age, hdop or satellites. (GPS tracker)
Guys,
I need to increase this timeout as well…
I do not find any customjs.go file… I’m not really familiar with theses stuffs.
Is there a way to make this timeout a bit longer?
I would need some news about the guy who know… (@brocaar ? )
Even we have a very simple custom code (Base64 to Hex String converison), it sometimes fall in execution timeout when we receive about 2 messages per second.
Is there way to insure that hte paylaod is decoded? Or do I have to focus my researches on another high level decoder tool?
Hi genevois,
Where can I find custom_js.go file at least to change this value manually?
I just added this change, I’ll make a PR in a few minutes.
Oh, nevermind, it’s ready. 
Ha, I just did the same 
Hi, @brocaar did you plan to release a version with this correction ? When do you think we will have access to the Debian packages ? Thanks !