60653向远程端口7272发送ACK包
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17:50:00.523948 IP 127.0.0.1.60653 > 127.0.0.1.7272: Flags [.], ack 1, win 256表明握手成功
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17:50:00.535918 IP 127.0.0.1.7272 > 127.0.0.1.60653: Flags [P.], seq 1:157, ack 716, win 256...
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17:50:30.653546 IP 127.0.0.1.7272 > 127.0.0.1.60653: Flags [P.], seq 157:267, ack 754, win 256,...
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17:50:30.653689 IP 127.0.0.1.7272 > 127.0.0.1.60653: Flags [P.], seq 267:346, ack 754, win 256* 浏览器响应ACK,收到发言数据
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17:51:02.776808 IP 127.0.0.1.60653 > 127.0.0.1.7272: Flags [.], ack 448, win 256