UDP Queue - number of packets queued?

[palmerr23]

Is there any way to tell how many UDP packets are queued when the constructor is EthernetUDP udp{QNE_PKT_QUEUE_LEN} ?

As well, knowing that there were dropped packets since the last udp.parsepacket() call would be nice.

[ssilverman]

I can add those, but I need to put some thought into what I want to call the methods.

[ssilverman]

I’m thinking of changing “size” to “capacity”, the total queue size, and using “size” for how many are in the queue. This coincides with how std::vector names things.

[palmerr23]

Shawn,

My two cent's worth...

Yes, it will be good to be clear whether the call relates to current (parsePacket), next (peek) or total queue. In the current doco, it takes some careful reading to understand the meaning of the various uses of 'size' In choosing terms.

For instance, changing the word might help clarify if receiveQueueSize() returns the maximum, or current, length of the queue.

Capacity is useful for referring to the maximum possible length, rather than the current number of queued packets. Using 'queueSize' for the current queue length could help distinguish it from the size() method of a parsed packet.

[ssilverman]

I changed size->capacity and the new size means "how full". I also added droppedReceiveCount() and totalReceiveCount() functions to both EthernetUDP and EthernetFrame. Check out the latest pushes.

Note that these counts are at the layer above the driver. To access the driver-layer dropped packets, you need to use the LINK_STATS option.

[ssilverman]

@palmerr23 feedback is welcome.

[palmerr23]

Thanks, I will try out the UDP versions and provide any insights I find.