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tcphdr Struct Reference

TCP protocol header structure. More...

#include <netinet/tcp.h>

Data Fields
u_short	th_sport
	Source port.
u_short	th_dport
	Destination port.
u_long	th_seq
	Sequence number of first octet in this segment.
u_long	th_ack
	Expected sequence number of next octet.
u_char	th_x2:4
	Unused.
u_char	th_off:4
	Unused Data offset.
u_char	th_flags
	Control flags.
u_short	th_win
	Number of acceptable octects.
u_short	th_sum
	96 byte pseudo header checksum
u_short	th_urp
	Urgent data pointer.

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Detailed Description

TCP protocol header structure.

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The documentation for this struct was generated from the following file:

• tcp.h

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