Configurable download limit per host

[dirkmc]

Limit the amount of space that can be reserved for downloaded data per-host. This helps mitigate against a single host with a slow connection reserving all the download space, when there may be other hosts with faster connections that have not had a chance to propose a deal yet.

For example

• the total download space is 100GB
• the percentage per host is limited to 50%

This means that the total amount of space for downloaded data per host is 50GB. The reserved space is the sum of

• the amount of data queued for download
• the amount of data currently transferring
• the amount of data that is in the download staging area (waiting to be handed off to the sealing subsystem)

TODO:

• Sanity check config params (eg MaxStagingDealsPercentPerHost must be between 0 - 100)

[Dealmaking]
  MaxStagingDealsBytes = 1000
  MaxStagingDealsPercentPerHost = 50

[parkan]

THANK YOU!!!