--- a/epoc32/include/libc/netinet/tcp.h	Tue Nov 24 13:55:44 2009 +0000
+++ b/epoc32/include/libc/netinet/tcp.h	Tue Mar 16 16:12:26 2010 +0000
@@ -1,1 +1,103 @@
-tcp.h
+/* TCP.H
+ * 
+ * Portions copyright (c) 1997-1999 Symbian Ltd.  All rights reserved.
+ */
+
+/** @file
+@publishedAll
+@released
+*/
+
+/*
+ * Copyright (c) 1982, 1986 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ */
+
+#ifndef	_NETINET_TCP_H
+#define	_NETINET_TCP_H
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+typedef	u_long	tcp_seq;
+/**
+TCP header.
+Per RFC 793, September, 1981.
+@internalComponent
+*/
+struct tcphdr {
+	u_short	th_sport;		/* source port */
+	u_short	th_dport;		/* destination port */
+	tcp_seq	th_seq;			/* sequence number */
+	tcp_seq	th_ack;			/* acknowledgement number */
+#ifdef _BIT_FIELDS_LTOH
+	u_int	th_x2:4,		/* (unused) */
+		th_off:4;		/* data offset */
+#else
+	u_int	th_off:4,		/* data offset */
+		th_x2:4;		/* (unused) */
+#endif
+	u_char	th_flags;
+/**
+@internalComponent
+*/
+#define	TH_FIN	0x01
+/**
+@internalComponent
+*/
+#define	TH_SYN	0x02
+/**
+@internalComponent
+*/
+#define	TH_RST	0x04
+/**
+@internalComponent
+*/
+#define	TH_PUSH	0x08
+/**
+@internalComponent
+*/
+#define	TH_ACK	0x10
+/**
+@internalComponent
+*/
+#define	TH_URG	0x20
+	u_short	th_win;			/* window */
+	u_short	th_sum;			/* checksum */
+	u_short	th_urp;			/* urgent pointer */
+};
+
+#define	TCPOPT_EOL	0
+#define	TCPOPT_NOP	1
+#define	TCPOPT_MAXSEG	2
+
+/**
+Default maximum segment size for TCP.
+With an IP MSS of 576, this is 536,
+but 512 is probably more convenient.
+*/
+#ifdef	lint
+#define	TCP_MSS	536
+#else
+#define	TCP_MSS	MIN(512, IP_MSS - sizeof (struct tcpiphdr))
+#endif
+
+/**
+User-settable options (used with setsockopt).
+*/
+#define	TCP_NODELAY	0x01	/* don't delay send to coalesce packets */
+#define	TCP_MAXSEG	0x02	/* set maximum segment size */
+
+#define	TCP_NOTIFY_THRESHOLD		0x10
+#define	TCP_ABORT_THRESHOLD		0x11
+#define	TCP_CONN_NOTIFY_THRESHOLD	0x12
+#define	TCP_CONN_ABORT_THRESHOLD	0x13
+
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* _NETINET_TCP_H */