Congestion control

The congestion control mechanisms limit the number of simultaneous TCP segments in the network. The algorithms used for congestion control [13] are designed to be simple to implement and require only a few lines of code.

Since uIP only handles one in-flight TCP segment per connection, the amount of simultaneous segments cannot be further limited, thus the congestion control mechanisms are not needed. lwIP has the ability to have multiple in-flight segments and therefore implements all of TCP's congestion control mechanisms.