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Create the PCAP file header and write them into a file

Published on Oct 5, 2026

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The following table describes PCAP file header format.

Bytes	Value	Comment
4	0xA1B2C3D4	Magic number
2	2	Major number
2	4	Minor number
4	gmtOff/1000	Time zone correction
4	0	sigfigs
4	65536	samplen
4	1	linktype

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