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TCP State Machine (TCP/IP Illustrated vol. 1) W. Richard Stevens

TCP State Machine (TCP/IP Illustrated vol. 1) W. Richard Stevens. Client transitions. Starting point. Server transitions. CLOSED. Appl: passive open send: <nothing. Appl: active open send: SYN. LISTEN. App: send data. Recv:SYN; send:SYN-ACK. Send:SYN. Recv:RST. Appl: close.

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TCP State Machine (TCP/IP Illustrated vol. 1) W. Richard Stevens

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  1. TCP State Machine (TCP/IP Illustrated vol. 1) W. Richard Stevens Client transitions Starting point Server transitions CLOSED Appl: passive open send: <nothing. Appl: active open send: SYN LISTEN App: send data Recv:SYN; send:SYN-ACK Send:SYN Recv:RST Appl: close SYN_RCVD Recv: SYN; send:SYN-ACK simultaneous open SYN_SENT Recv:SYN,ACK Or timeout Send:ACK Recv:ACK; send:<nothing. Appl: close Close: FIN ESTABLISHED CLOSE_WAIT Data transfer state Appl : close Send: FIN Appl: close Send:FIN Recv:ACK LAST_ACK Recv:FIN send: ACK Simultaneous close Send: nothing passive close FIN_WAIT_1 CLOSING Recv: ACK send: <nothing> Recv:FIN,ACK; send:ACK Recv: ACK send: nothing FIN_WAIT_2 TIME_WAIT Recv:FIN send:ACK 2MSL timeout Active close

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