TCP Flags Continued: CWR + ECE

Today we venture forth looking at a couple of additional flags found in the TCP header: CWR and ECE. These TCP flags are used together with two flags in the IP header (ECT and CE) to warn senders of congestion in the network thereby avoiding packet drops and retransmissions. Background…

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Packet Congestion Ahead

Why the 200ms delay? Over the course of our work, we have the fortune of diving into numerous network issues. One particularly interesting one involves a curious ~200ms delay in the acknowledgement of the response packet for small HTTP responses. This doesn’t sound all that terrible unless you have a…

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