The ACK bit and SYN all said this is the SYNACK segment. Note the MSS (Maximum Segment Size) is 1460 bytes.The TCP Header flags:ACK: ACK, receipt number to take effect.Push: do not send/receive buffer organization, pushing right up on the class data.SYN: synchronize send, deliver value initialization, SEQ number, SEQ number effect.SF: discontinuance of sending (the receiving party can still send), then it can end the connection explicit.RESET: decline or end of the TCP connection explicitly.Urgent: emergency data only by Urg Data Pointer is pushed right up the top layer, Urg Data Pointer.
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