intermittent connection

[Alex-Bautista]

Context

When conducting iPerf test, a spotty WiFI connection can be disconnected for X amount of time. Request to add a user configurable TCP control channel timeout to prevent client from closing socket.

• Version of iperf3: 3.6

• Hardware: VM

• Operating system (and distribution, if any): Ubuntu

Enhancement Request

• Current behavior

When a client starts a UDP test, if the client loses connection and connects to a different wifi client throws
iperf3: error - unable to write to stream socket: Invalid argument
The server then continues to finish the test until specified length is completed + ~4 second timeout of 3.6 iperf

• Desired behavior

When a client loses connections (brief <45 seconds, due to poor internet connection), client will wait a specified timeout before closing connection so that test can keep continuing.

• Implementation notes

[bmah888]

Thinking something like TCP keepalives on the control connection. I forgot how to do this. This might be a good thing for some interested party to develop if it doesn't require a huge design change.