Initial receive support in mymqtt

controller-host/mymqtt.lua

@@ -242,8 +242,33 @@ function clientMt:subscribe(args)
 	return self:sendPacket()
 end
 
+function clientMt:receiveBytes(count)
+    local result, err, partial = nil, nil, ""
+    while true do
+        result, err, partial = client:receive(1 - #partial, partial)
+        if err == "timeout" then
+            coroutine.yield()
+        else if result then
+            return result
+        else
+            return nil, err
+        end
+    end
+end
+
+function clientMt:receiveByte()
+    return string.byte(self:receiveBytes(1)))
+end
+
 function clientMt:receivePacket()
-	local firstByte = self:receiveByte()
+	local firstByte, err = self:receiveByte()
+	if err then return nil, self:handleError(err) end
+end
+
+function clientMt:threadReceive()
+    while true do
+        self:receiveAndHandlePacket()
+    end
 end
 
 function clientMt:on(eventHandlers)
@@ -257,9 +282,10 @@ function mqtt.client(args)
 		reconnect = 5,
 		connection = nil,
 		packetIdentifier = 1,
-		buffer = "",
+		buffer = ""
 	}
 	setmetatable(client, {__index = clientMt})
+	client.create(function() client:threadReceive() end)
 	return client
 end