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In our application, we are using apache tomcat webserver running in 8081.

It receives POST message from Client at 16:42:06.87 IST timeframe. It acknowledges by ACK packet with window size of 62356 bytes after 200ms.

After some seconds (3-5 seconds), it also sends similar ACK packet but as a "TCP Window Update" packet of 65535 bytes (Buffer empty) to client. And then it sends 200 OK which means Successful Processing...

My question:

What are the scenarios which "TCP Window Update" packet would be sent from Server to Client.

Does this means webserver or Application-Layer took around 3-5 seconds to read 65535-62356(~ 3100) bytes which was in its TCP Receiver window and after reading, it has sent "TCP Window Update" packet since it is yet to send response

asked 16 Jun '15, 02:22

Sashi's gravatar image

accept rate: 0%

Could you provide us a trace?

(17 Jun '15, 14:49) Christian_R
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question asked: 16 Jun '15, 02:22

question was seen: 1,688 times

last updated: 17 Jun '15, 14:49

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