writeQueueSize and udpMaxPayloadSize

[GyudongPark]

Question

How these two options can affect latency of WebRTC?

[aler9]

They do not.

Packets are sent out as soon as they are received and there are no internal buffers.

writeQueueSize affects the size of the queue of outgoing packets. It should be increased only if you get error "write queue is full".

udpMaxPayloadSize affects the size of outgoing UDP packets. It should not be touched since it's already set to the maximum possible size of an UDP packet (~1400 bytes), unless there are network restrictions that force you to decrease them further (for instance, when you are using a VPN, that might take some bytes from the packet).

Latency in WebRTC is unfortunately chosen by browsers by using an internal algorithm. You can provide a "hint" to this algorithm in order to set the desired latency. I posted an explanation here: #4063 (comment)