does this lib support query params?

[DanielBustillos]

For getting attibutes from a thingsboard server, I want to pass the following CoAP URL:

_COAP_GET_URL = f"/api/v1/{ACCESS_TOKEN}/attributes?sharedKeys={_SHARED_KEYS}"
However, every time I include sharedKeys={_SHARED_KEYS}, I receive the following response:

Message received: type: ACK, method: 4.00, messageid: 14309, payload: bytearray(b''), from: ('MY_IP', 5683)
But when I use:

_COAP_GET_URL = f"/api/v1/{ACCESS_TOKEN}/attributes"
I receive the message correctly.

Could someone please confirm whether the CoAP library supports query parameters in the GET request URL? If so, could you provide guidance or examples on the correct way to include them? Alternatively, if query parameters are not supported, what is the recommended approach to retrieve specific shared attributes?

[mrubli]

This library seems pretty much abandoned, which is a shame, but for what it's worth, here's what I did for using parameters:

First, I added a couple of parameters to the send() and get() methods, like so:

--- a/microcoapy/microcoapy.py
+++ b/microcoapy/microcoapy.py
@@ -115,7 +115,7 @@ class Coap:
 
         return status
 
-    def send(self, ip, port, url, type, method, token, payload, content_format, query_option):
+    def send(self, ip, port, url, type, method, token, payload, content_format, query_option, options = None):
         packet = CoapPacket()
         packet.type = type
         packet.method = method
@@ -123,6 +123,8 @@ class Coap:
         packet.payload = payload
         packet.content_format = content_format
         packet.query = query_option
+        for opt in options or []:
+            packet.addOption(opt.number, opt.buffer)
 
         return self.sendEx(ip, port, url, packet)
 
@@ -151,8 +153,8 @@ class Coap:
         return self.sendPacket(ip, port, packet)
 
     #Confirmable
-    def get(self, ip, port, url, token=bytearray()):
-        return self.send(ip, port, url, macros.COAP_TYPE.COAP_CON, macros.COAP_METHOD.COAP_GET, token, None, macros.COAP_CONTENT_FORMAT.COAP_NONE, None)
+    def get(self, ip, port, url, token=bytearray(), options=None):
+        return self.send(ip, port, url, macros.COAP_TYPE.COAP_CON, macros.COAP_METHOD.COAP_GET, token, None, macros.COAP_CONTENT_FORMAT.COAP_NONE, None, options)
 
     def put(self, ip, port, url, payload=bytearray(), query_option=None, content_format=macros.COAP_CONTENT_FORMAT.COAP_NONE, token=bytearray()):
         return self.send(ip, port, url, macros.COAP_TYPE.COAP_CON, macros.COAP_METHOD.COAP_PUT, token, payload, content_format, query_option)

Then I create a list of CoAP options, one of them being the query:

options = []
if args.query is not None:
	optQuery = microcoapy.coap_option.CoapOption(
		number=microcoapy.coap_macros.COAP_OPTION_NUMBER.COAP_URI_QUERY,
		buffer=args.query,
	)
	options.append(optQuery)
…
coap_client.get(SERVER_IP, SERVER_PORT, args.path, options=options)

Also note that there exists a CoapPacket.query property, which you may be able to use if you build your own CoapPacket.