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1 office 1 /**
2 * @file
3 * Base TCP API definitions shared by TCP and ALTCP\n
4 * See also @ref tcp_raw
5 */
6  
7 /*
8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without modification,
12 * are permitted provided that the following conditions are met:
13 *
14 * 1. Redistributions of source code must retain the above copyright notice,
15 * this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright notice,
17 * this list of conditions and the following disclaimer in the documentation
18 * and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
31 * OF SUCH DAMAGE.
32 *
33 * This file is part of the lwIP TCP/IP stack.
34 *
35 * Author: Adam Dunkels <adam@sics.se>
36 *
37 */
38 #ifndef LWIP_HDR_TCPBASE_H
39 #define LWIP_HDR_TCPBASE_H
40  
41 #include "lwip/opt.h"
42  
43 #if LWIP_TCP /* don't build if not configured for use in lwipopts.h */
44  
45 #ifdef __cplusplus
46 extern "C" {
47 #endif
48  
49  
50 #if LWIP_WND_SCALE
51 typedef u32_t tcpwnd_size_t;
52 #else
53 typedef u16_t tcpwnd_size_t;
54 #endif
55  
56 enum tcp_state {
57 CLOSED = 0,
58 LISTEN = 1,
59 SYN_SENT = 2,
60 SYN_RCVD = 3,
61 ESTABLISHED = 4,
62 FIN_WAIT_1 = 5,
63 FIN_WAIT_2 = 6,
64 CLOSE_WAIT = 7,
65 CLOSING = 8,
66 LAST_ACK = 9,
67 TIME_WAIT = 10
68 };
69  
70 /* Flags for "apiflags" parameter in tcp_write */
71 #define TCP_WRITE_FLAG_COPY 0x01
72 #define TCP_WRITE_FLAG_MORE 0x02
73  
74 #define TCP_PRIO_MIN 1
75 #define TCP_PRIO_NORMAL 64
76 #define TCP_PRIO_MAX 127
77  
78 const char* tcp_debug_state_str(enum tcp_state s);
79  
80 #ifdef __cplusplus
81 }
82 #endif
83  
84 #endif /* LWIP_TCP */
85  
86 #endif /* LWIP_HDR_TCPBASE_H */