Measuring the evolution of transport protocols in the internet

摘要: In this paper we explore the evolution of both Internet's most heavily used transport protocol, TCP, and current network environment with respect to how network's ultimately impacts end-to-end protocols. The traditional assumptions about Internet are increasingly challenged by introduction intermediary elements (middleboxes) that intentionally or unintentionally prevent alter behavior communications. This provides measurement results showing impact on a number proposed protocol mechanisms (e.g., Path MTU Discovery, Explicit Congestion Notification, etc.). addition, investigate prevalence correctness implementations using TCP algorithmic changes selective acknowledgment-based loss recovery, congestion window growth based byte counting, We present measurements taken an active framework study web servers passive survey clients accessing information from our server. analyze gain further understanding differences between in theory versus observed through measurements. these can be guide definition more realistic modeling scenarios. Finally, several lessons will benefit others taking