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Alright so I'm trying to put a very long string into a buffer but I keep getting this error.

internal/buffer.js:559
throw new ERR_OUT_OF_RANGE('value', >= $min and <= $max, value);
^

RangeError [ERR_OUT_OF_RANGE]: The value of "value" is out of range.
It must be >= 0 and <= 255. Received 9605

I'm not sure if it can be fixed but if it can could someone tell me why I'm getting this and how it could be fixed? Thanks!

Edit: Here's the code that puts it into the buffer.

build: function(params)
 var packetParts = ;
 var packetSize = 0;
 params.forEach(function(param)
 var buffer;
 console.log(param);
 if(typeof param === "string")
 buffer = Buffer.from(param);
 buffer = Buffer.concat([buffer, zeroBuffer], param.length + zeroBuffer.length);
 else if(typeof param === "number")
 buffer = Buffer.alloc(2);
 buffer.writeUInt16LE(param, 0);
 else
 console.log("[CRITICAL] WARNING: Undefined DataType In Packet Builder");
 
 packetParts.push(buffer);
 packetSize += buffer.length;
 );

 var dataBuffer = Buffer.concat(packetParts, packetSize);
 var sizeBuffer = Buffer.alloc(1);
 sizeBuffer.writeUInt8(dataBuffer.length + 1);

 finalBuffer = Buffer.concat([sizeBuffer, dataBuffer], sizeBuffer.length + dataBuffer.length);
 return finalBuffer;

It must be >= 0 and <= 255. Received 9605 tells me that you're trying to write to a byte with decimal 9605 which isn't possible.

On your code, you have sizeBuffer.writeUInt8(dataBuffer.length + 1);, which proves you are trying to write a byte.

But I don't think you understand how much data a byte can hold. See this:

As you can see 9605 is too big for a uint8/unsigned char [0-255].

I would suggest:

sizeBuffer.writeUInt16LE(dataBuffer.length + 1);

Because a unsigned short can hold upto 65535, which is large enough for your 9605 packet length.

This should fix the error but you might also want to check your reader to read for a unsigned short instead of the unsigned byte OR ELSE your reader will also break.