What would cause different rates of packet loss between client and server in UDP?
- by febreezey
If I've implemented a reliable UDP file transfer protocol and I have a file that deliberately drops a percentage of packets when I transmit, why would it be more evident that transmission time increases as the packet loss percentage increases going from the client to server as opposed from the server to the client? Is this something that can be explained as a result of the protocol?
Here are my numbers from two separate experiments. I kept the max packet size to 500 Bytes and the opposite direction packet loss to 5% with a 1 Megabyte file:
Server to Client loss Percentage varied:
1 MB file, 500 b segments, client to server loss 5%
1% : 17253 ms
3% : 3388 ms
5% : 7252 ms
10% : 6229 ms
11% : 12346 ms
13% : 11282 ms
15% : 9252 ms
20% : 11266 ms
Client to Server loss percentage varied
1 MB file, 500 b segments, server to client loss 5%
1%: 4227 ms
3%: 4334 ms
5%: 3308 ms
10%: 31350 ms
11%: 36398 ms
13%: 48436 ms
15%: 65475 ms
20%: 120515 ms
You can clearly see an exponential increase in the client to server group
