Toward greater scavenger congestion control deployment: Implementations and interfaces

Heterogeneous applications and restricted bandwidth on the Internet have motivated recent works on scavenger congestion control, which yields bandwidth to competing primary traffic for increased network-wide utility. Although potential use cases are quite common, deployments are as yet limited, in part due to protocol design immaturity, lack of open source code, and limited experimental evaluation. In this work, we extend recent scavenger advances by providing (1) open-source implementations of two recent scavenger proposals, PCC Proteus (QUIC-based) and LEDBAT++; (2) early benchmarks of the two in a realistic network setup; and (3) a discussion of APIs needed for applications to take advantage of scavenger congestion control. Ultimately, we hope this line of work will lead to further community discussion, open development, and deployment of scavengers yielding better quality of experience for users.