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netinet/tcp.h File Reference

TCP protocol definitions. More...

Data Structures
struct	_TCPPSEUDOHDR
	TCP pseudo header structure. More...
struct	tcphdr
	TCP protocol header structure. More...
Defines
#define	TH_FIN
	Finishing transmission.
#define	TH_SYN
	Synchronizing sequence numbers.
#define	TH_RST
	Reset connection.
#define	TH_PUSH
	Push data to application level.
#define	TH_ACK
	Acknowledge field is valid.
#define	TH_URG
	Urgent data present.
#define	TH_FLAGS
	TCP flag mask.
#define	TCPOPT_EOL
	End of options.
#define	TCPOPT_NOP
	Nothing.
#define	TCPOPT_MAXSEG
	Maximum segment size.
#define	TCPOLEN_MAXSEG
	Maximum segment size length.
#define	TCPOPT_WINDOW
	Receive window.
#define	TCPOLEN_WINDOW
	Receive window length.
#define	TCP_MSS
	Default maximum segment size.
#define	TCP_WINSIZE
	Default window size.
#define	TCP_MAXWIN
	Largest value for (unscaled) window.
#define	TTCP_CLIENT_SND_WND
	Default send window for T/TCP client.
#define	TCP_MAX_WINSHIFT
	Maximum window shift.
#define	TCP_MAXHLEN
	Maximum length of header in bytes.
#define	TCP_MAXOLEN
	Maximum space left for options.
#define	TCP_NODELAY
	Don't delay send to coalesce segments.
#define	TCP_MAXSEG
	Set maximum segment size.
#define	TCP_NOPUSH
	Don't push last block of write.
#define	TCP_NOOPT
	Don't use TCP options.
Typedefs
typedef tcphdr	TCPHDR
	TCP protocol header type.
typedef _TCPPSEUDOHDR	TCPPSEUDOHDR
	TCP pseudo header type.

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Detailed Description

TCP protocol definitions.

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Define Documentation

#define TCP_MSS

Default maximum segment size. The maximum size of an IP datagram, that will not become fragmented, is 576. The maximum IP datagram for Ethernet is 1500. Reduce this number by 40, 20 bytes TCP header and 20 bytes IP header.

#define TCP_WINSIZE

Default window size. It's recommended to set this 6 times the maximum segment size.

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Typedef Documentation

TCPHDR

TCP protocol header type.

TCPPSEUDOHDR

TCP pseudo header type.

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