Shinichiro Nakamura / Mbed 2 deprecated Toragi_2012_PachubeCosm

Hi. This is the feed program for Cosm. (The previous name of the services is Pachube.)

Dependencies:   mbed ThermistorPack Pachube ConfigFile EthernetNetIf TextLCD HTTPClient_ToBeRemoved FatFileSystem SDFileSystem

extlib/EthernetNetIf/LPC1768/lwip/include/lwip/tcp.h@0:521ba375aa0f, 2012-08-06 (annotated)

Committer:
shintamainjp
Date:
Mon Aug 06 12:37:59 2012 +0000
Revision:
0:521ba375aa0f
Pachube renamed to Cosm.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shintamainjp 0:521ba375aa0f 1 /*
shintamainjp 0:521ba375aa0f 2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
shintamainjp 0:521ba375aa0f 3 * All rights reserved.
shintamainjp 0:521ba375aa0f 4 *
shintamainjp 0:521ba375aa0f 5 * Redistribution and use in source and binary forms, with or without modification,
shintamainjp 0:521ba375aa0f 6 * are permitted provided that the following conditions are met:
shintamainjp 0:521ba375aa0f 7 *
shintamainjp 0:521ba375aa0f 8 * 1. Redistributions of source code must retain the above copyright notice,
shintamainjp 0:521ba375aa0f 9 * this list of conditions and the following disclaimer.
shintamainjp 0:521ba375aa0f 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
shintamainjp 0:521ba375aa0f 11 * this list of conditions and the following disclaimer in the documentation
shintamainjp 0:521ba375aa0f 12 * and/or other materials provided with the distribution.
shintamainjp 0:521ba375aa0f 13 * 3. The name of the author may not be used to endorse or promote products
shintamainjp 0:521ba375aa0f 14 * derived from this software without specific prior written permission.
shintamainjp 0:521ba375aa0f 15 *
shintamainjp 0:521ba375aa0f 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
shintamainjp 0:521ba375aa0f 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
shintamainjp 0:521ba375aa0f 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
shintamainjp 0:521ba375aa0f 19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
shintamainjp 0:521ba375aa0f 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
shintamainjp 0:521ba375aa0f 21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
shintamainjp 0:521ba375aa0f 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
shintamainjp 0:521ba375aa0f 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
shintamainjp 0:521ba375aa0f 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
shintamainjp 0:521ba375aa0f 25 * OF SUCH DAMAGE.
shintamainjp 0:521ba375aa0f 26 *
shintamainjp 0:521ba375aa0f 27 * This file is part of the lwIP TCP/IP stack.
shintamainjp 0:521ba375aa0f 28 *
shintamainjp 0:521ba375aa0f 29 * Author: Adam Dunkels <adam@sics.se>
shintamainjp 0:521ba375aa0f 30 *
shintamainjp 0:521ba375aa0f 31 */
shintamainjp 0:521ba375aa0f 32 #ifndef __LWIP_TCP_H__
shintamainjp 0:521ba375aa0f 33 #define __LWIP_TCP_H__
shintamainjp 0:521ba375aa0f 34
shintamainjp 0:521ba375aa0f 35 #include "lwip/opt.h"
shintamainjp 0:521ba375aa0f 36
shintamainjp 0:521ba375aa0f 37 #if LWIP_TCP /* don't build if not configured for use in lwipopts.h */
shintamainjp 0:521ba375aa0f 38
shintamainjp 0:521ba375aa0f 39 #include "lwip/sys.h"
shintamainjp 0:521ba375aa0f 40 #include "lwip/mem.h"
shintamainjp 0:521ba375aa0f 41 #include "lwip/pbuf.h"
shintamainjp 0:521ba375aa0f 42 #include "lwip/ip.h"
shintamainjp 0:521ba375aa0f 43 #include "lwip/icmp.h"
shintamainjp 0:521ba375aa0f 44 #include "lwip/err.h"
shintamainjp 0:521ba375aa0f 45
shintamainjp 0:521ba375aa0f 46 #ifdef __cplusplus
shintamainjp 0:521ba375aa0f 47 extern "C" {
shintamainjp 0:521ba375aa0f 48 #endif
shintamainjp 0:521ba375aa0f 49
shintamainjp 0:521ba375aa0f 50 struct tcp_pcb;
shintamainjp 0:521ba375aa0f 51
shintamainjp 0:521ba375aa0f 52 /** Function prototype for tcp accept callback functions. Called when a new
shintamainjp 0:521ba375aa0f 53 * connection can be accepted on a listening pcb.
shintamainjp 0:521ba375aa0f 54 *
shintamainjp 0:521ba375aa0f 55 * @param arg Additional argument to pass to the callback function (@see tcp_arg())
shintamainjp 0:521ba375aa0f 56 * @param newpcb The new connection pcb
shintamainjp 0:521ba375aa0f 57 * @param err An error code if there has been an error accepting.
shintamainjp 0:521ba375aa0f 58 * Only return ERR_ABRT if you have called tcp_abort from within the
shintamainjp 0:521ba375aa0f 59 * callback function!
shintamainjp 0:521ba375aa0f 60 */
shintamainjp 0:521ba375aa0f 61 typedef err_t (*tcp_accept_fn)(void *arg, struct tcp_pcb *newpcb, err_t err);
shintamainjp 0:521ba375aa0f 62
shintamainjp 0:521ba375aa0f 63 /** Function prototype for tcp receive callback functions. Called when data has
shintamainjp 0:521ba375aa0f 64 * been received.
shintamainjp 0:521ba375aa0f 65 *
shintamainjp 0:521ba375aa0f 66 * @param arg Additional argument to pass to the callback function (@see tcp_arg())
shintamainjp 0:521ba375aa0f 67 * @param tpcb The connection pcb which received data
shintamainjp 0:521ba375aa0f 68 * @param p The received data (or NULL when the connection has been closed!)
shintamainjp 0:521ba375aa0f 69 * @param err An error code if there has been an error receiving
shintamainjp 0:521ba375aa0f 70 * Only return ERR_ABRT if you have called tcp_abort from within the
shintamainjp 0:521ba375aa0f 71 * callback function!
shintamainjp 0:521ba375aa0f 72 */
shintamainjp 0:521ba375aa0f 73 typedef err_t (*tcp_recv_fn)(void *arg, struct tcp_pcb *tpcb,
shintamainjp 0:521ba375aa0f 74 struct pbuf *p, err_t err);
shintamainjp 0:521ba375aa0f 75
shintamainjp 0:521ba375aa0f 76 /** Function prototype for tcp sent callback functions. Called when sent data has
shintamainjp 0:521ba375aa0f 77 * been acknowledged by the remote side. Use it to free corresponding resources.
shintamainjp 0:521ba375aa0f 78 * This also means that the pcb has now space available to send new data.
shintamainjp 0:521ba375aa0f 79 *
shintamainjp 0:521ba375aa0f 80 * @param arg Additional argument to pass to the callback function (@see tcp_arg())
shintamainjp 0:521ba375aa0f 81 * @param tpcb The connection pcb for which data has been acknowledged
shintamainjp 0:521ba375aa0f 82 * @param len The amount of bytes acknowledged
shintamainjp 0:521ba375aa0f 83 * @return ERR_OK: try to send some data by calling tcp_output
shintamainjp 0:521ba375aa0f 84 * Only return ERR_ABRT if you have called tcp_abort from within the
shintamainjp 0:521ba375aa0f 85 * callback function!
shintamainjp 0:521ba375aa0f 86 */
shintamainjp 0:521ba375aa0f 87 typedef err_t (*tcp_sent_fn)(void *arg, struct tcp_pcb *tpcb,
shintamainjp 0:521ba375aa0f 88 u16_t len);
shintamainjp 0:521ba375aa0f 89
shintamainjp 0:521ba375aa0f 90 /** Function prototype for tcp poll callback functions. Called periodically as
shintamainjp 0:521ba375aa0f 91 * specified by @see tcp_poll.
shintamainjp 0:521ba375aa0f 92 *
shintamainjp 0:521ba375aa0f 93 * @param arg Additional argument to pass to the callback function (@see tcp_arg())
shintamainjp 0:521ba375aa0f 94 * @param tpcb tcp pcb
shintamainjp 0:521ba375aa0f 95 * @return ERR_OK: try to send some data by calling tcp_output
shintamainjp 0:521ba375aa0f 96 * Only return ERR_ABRT if you have called tcp_abort from within the
shintamainjp 0:521ba375aa0f 97 * callback function!
shintamainjp 0:521ba375aa0f 98 */
shintamainjp 0:521ba375aa0f 99 typedef err_t (*tcp_poll_fn)(void *arg, struct tcp_pcb *tpcb);
shintamainjp 0:521ba375aa0f 100
shintamainjp 0:521ba375aa0f 101 /** Function prototype for tcp error callback functions. Called when the pcb
shintamainjp 0:521ba375aa0f 102 * receives a RST or is unexpectedly closed for any other reason.
shintamainjp 0:521ba375aa0f 103 *
shintamainjp 0:521ba375aa0f 104 * @note The corresponding pcb is already freed when this callback is called!
shintamainjp 0:521ba375aa0f 105 *
shintamainjp 0:521ba375aa0f 106 * @param arg Additional argument to pass to the callback function (@see tcp_arg())
shintamainjp 0:521ba375aa0f 107 * @param err Error code to indicate why the pcb has been closed
shintamainjp 0:521ba375aa0f 108 * ERR_ABRT: aborted through tcp_abort or by a TCP timer
shintamainjp 0:521ba375aa0f 109 * ERR_RST: the connection was reset by the remote host
shintamainjp 0:521ba375aa0f 110 */
shintamainjp 0:521ba375aa0f 111 typedef void (*tcp_err_fn)(void *arg, err_t err);
shintamainjp 0:521ba375aa0f 112
shintamainjp 0:521ba375aa0f 113 /** Function prototype for tcp connected callback functions. Called when a pcb
shintamainjp 0:521ba375aa0f 114 * is connected to the remote side after initiating a connection attempt by
shintamainjp 0:521ba375aa0f 115 * calling tcp_connect().
shintamainjp 0:521ba375aa0f 116 *
shintamainjp 0:521ba375aa0f 117 * @param arg Additional argument to pass to the callback function (@see tcp_arg())
shintamainjp 0:521ba375aa0f 118 * @param tpcb The connection pcb which is connected
shintamainjp 0:521ba375aa0f 119 * @param err An unused error code, always ERR_OK currently ;-) TODO!
shintamainjp 0:521ba375aa0f 120 * Only return ERR_ABRT if you have called tcp_abort from within the
shintamainjp 0:521ba375aa0f 121 * callback function!
shintamainjp 0:521ba375aa0f 122 *
shintamainjp 0:521ba375aa0f 123 * @note When a connection attempt fails, the error callback is currently called!
shintamainjp 0:521ba375aa0f 124 */
shintamainjp 0:521ba375aa0f 125 typedef err_t (*tcp_connected_fn)(void *arg, struct tcp_pcb *tpcb, err_t err);
shintamainjp 0:521ba375aa0f 126
shintamainjp 0:521ba375aa0f 127 enum tcp_state {
shintamainjp 0:521ba375aa0f 128 CLOSED = 0,
shintamainjp 0:521ba375aa0f 129 LISTEN = 1,
shintamainjp 0:521ba375aa0f 130 SYN_SENT = 2,
shintamainjp 0:521ba375aa0f 131 SYN_RCVD = 3,
shintamainjp 0:521ba375aa0f 132 ESTABLISHED = 4,
shintamainjp 0:521ba375aa0f 133 FIN_WAIT_1 = 5,
shintamainjp 0:521ba375aa0f 134 FIN_WAIT_2 = 6,
shintamainjp 0:521ba375aa0f 135 CLOSE_WAIT = 7,
shintamainjp 0:521ba375aa0f 136 CLOSING = 8,
shintamainjp 0:521ba375aa0f 137 LAST_ACK = 9,
shintamainjp 0:521ba375aa0f 138 TIME_WAIT = 10
shintamainjp 0:521ba375aa0f 139 };
shintamainjp 0:521ba375aa0f 140
shintamainjp 0:521ba375aa0f 141 #if LWIP_CALLBACK_API
shintamainjp 0:521ba375aa0f 142 /* Function to call when a listener has been connected.
shintamainjp 0:521ba375aa0f 143 * @param arg user-supplied argument (tcp_pcb.callback_arg)
shintamainjp 0:521ba375aa0f 144 * @param pcb a new tcp_pcb that now is connected
shintamainjp 0:521ba375aa0f 145 * @param err an error argument (TODO: that is current always ERR_OK?)
shintamainjp 0:521ba375aa0f 146 * @return ERR_OK: accept the new connection,
shintamainjp 0:521ba375aa0f 147 * any other err_t abortsthe new connection
shintamainjp 0:521ba375aa0f 148 */
shintamainjp 0:521ba375aa0f 149 #define DEF_ACCEPT_CALLBACK tcp_accept_fn accept;
shintamainjp 0:521ba375aa0f 150 #else /* LWIP_CALLBACK_API */
shintamainjp 0:521ba375aa0f 151 #define DEF_ACCEPT_CALLBACK
shintamainjp 0:521ba375aa0f 152 #endif /* LWIP_CALLBACK_API */
shintamainjp 0:521ba375aa0f 153
shintamainjp 0:521ba375aa0f 154 /**
shintamainjp 0:521ba375aa0f 155 * members common to struct tcp_pcb and struct tcp_listen_pcb
shintamainjp 0:521ba375aa0f 156 */
shintamainjp 0:521ba375aa0f 157 #define TCP_PCB_COMMON(type) \
shintamainjp 0:521ba375aa0f 158 type *next; /* for the linked list */ \
shintamainjp 0:521ba375aa0f 159 enum tcp_state state; /* TCP state */ \
shintamainjp 0:521ba375aa0f 160 u8_t prio; \
shintamainjp 0:521ba375aa0f 161 void *callback_arg; \
shintamainjp 0:521ba375aa0f 162 /* the accept callback for listen- and normal pcbs, if LWIP_CALLBACK_API */ \
shintamainjp 0:521ba375aa0f 163 DEF_ACCEPT_CALLBACK \
shintamainjp 0:521ba375aa0f 164 /* ports are in host byte order */ \
shintamainjp 0:521ba375aa0f 165 u16_t local_port
shintamainjp 0:521ba375aa0f 166
shintamainjp 0:521ba375aa0f 167
shintamainjp 0:521ba375aa0f 168 /* the TCP protocol control block */
shintamainjp 0:521ba375aa0f 169 struct tcp_pcb {
shintamainjp 0:521ba375aa0f 170 /** common PCB members */
shintamainjp 0:521ba375aa0f 171 IP_PCB;
shintamainjp 0:521ba375aa0f 172 /** protocol specific PCB members */
shintamainjp 0:521ba375aa0f 173 TCP_PCB_COMMON(struct tcp_pcb);
shintamainjp 0:521ba375aa0f 174
shintamainjp 0:521ba375aa0f 175 /* ports are in host byte order */
shintamainjp 0:521ba375aa0f 176 u16_t remote_port;
shintamainjp 0:521ba375aa0f 177
shintamainjp 0:521ba375aa0f 178 u8_t flags;
shintamainjp 0:521ba375aa0f 179 #define TF_ACK_DELAY ((u8_t)0x01U) /* Delayed ACK. */
shintamainjp 0:521ba375aa0f 180 #define TF_ACK_NOW ((u8_t)0x02U) /* Immediate ACK. */
shintamainjp 0:521ba375aa0f 181 #define TF_INFR ((u8_t)0x04U) /* In fast recovery. */
shintamainjp 0:521ba375aa0f 182 #define TF_TIMESTAMP ((u8_t)0x08U) /* Timestamp option enabled */
shintamainjp 0:521ba375aa0f 183 #define TF_RXCLOSED ((u8_t)0x10U) /* rx closed by tcp_shutdown */
shintamainjp 0:521ba375aa0f 184 #define TF_FIN ((u8_t)0x20U) /* Connection was closed locally (FIN segment enqueued). */
shintamainjp 0:521ba375aa0f 185 #define TF_NODELAY ((u8_t)0x40U) /* Disable Nagle algorithm */
shintamainjp 0:521ba375aa0f 186 #define TF_NAGLEMEMERR ((u8_t)0x80U) /* nagle enabled, memerr, try to output to prevent delayed ACK to happen */
shintamainjp 0:521ba375aa0f 187
shintamainjp 0:521ba375aa0f 188 /* the rest of the fields are in host byte order
shintamainjp 0:521ba375aa0f 189 as we have to do some math with them */
shintamainjp 0:521ba375aa0f 190 /* receiver variables */
shintamainjp 0:521ba375aa0f 191 u32_t rcv_nxt; /* next seqno expected */
shintamainjp 0:521ba375aa0f 192 u16_t rcv_wnd; /* receiver window available */
shintamainjp 0:521ba375aa0f 193 u16_t rcv_ann_wnd; /* receiver window to announce */
shintamainjp 0:521ba375aa0f 194 u32_t rcv_ann_right_edge; /* announced right edge of window */
shintamainjp 0:521ba375aa0f 195
shintamainjp 0:521ba375aa0f 196 /* Timers */
shintamainjp 0:521ba375aa0f 197 u32_t tmr;
shintamainjp 0:521ba375aa0f 198 u8_t polltmr, pollinterval;
shintamainjp 0:521ba375aa0f 199
shintamainjp 0:521ba375aa0f 200 /* Retransmission timer. */
shintamainjp 0:521ba375aa0f 201 s16_t rtime;
shintamainjp 0:521ba375aa0f 202
shintamainjp 0:521ba375aa0f 203 u16_t mss; /* maximum segment size */
shintamainjp 0:521ba375aa0f 204
shintamainjp 0:521ba375aa0f 205 /* RTT (round trip time) estimation variables */
shintamainjp 0:521ba375aa0f 206 u32_t rttest; /* RTT estimate in 500ms ticks */
shintamainjp 0:521ba375aa0f 207 u32_t rtseq; /* sequence number being timed */
shintamainjp 0:521ba375aa0f 208 s16_t sa, sv; /* @todo document this */
shintamainjp 0:521ba375aa0f 209
shintamainjp 0:521ba375aa0f 210 s16_t rto; /* retransmission time-out */
shintamainjp 0:521ba375aa0f 211 u8_t nrtx; /* number of retransmissions */
shintamainjp 0:521ba375aa0f 212
shintamainjp 0:521ba375aa0f 213 /* fast retransmit/recovery */
shintamainjp 0:521ba375aa0f 214 u32_t lastack; /* Highest acknowledged seqno. */
shintamainjp 0:521ba375aa0f 215 u8_t dupacks;
shintamainjp 0:521ba375aa0f 216
shintamainjp 0:521ba375aa0f 217 /* congestion avoidance/control variables */
shintamainjp 0:521ba375aa0f 218 u16_t cwnd;
shintamainjp 0:521ba375aa0f 219 u16_t ssthresh;
shintamainjp 0:521ba375aa0f 220
shintamainjp 0:521ba375aa0f 221 /* sender variables */
shintamainjp 0:521ba375aa0f 222 u32_t snd_nxt; /* next new seqno to be sent */
shintamainjp 0:521ba375aa0f 223 u16_t snd_wnd; /* sender window */
shintamainjp 0:521ba375aa0f 224 u32_t snd_wl1, snd_wl2; /* Sequence and acknowledgement numbers of last
shintamainjp 0:521ba375aa0f 225 window update. */
shintamainjp 0:521ba375aa0f 226 u32_t snd_lbb; /* Sequence number of next byte to be buffered. */
shintamainjp 0:521ba375aa0f 227
shintamainjp 0:521ba375aa0f 228 u16_t acked;
shintamainjp 0:521ba375aa0f 229
shintamainjp 0:521ba375aa0f 230 u16_t snd_buf; /* Available buffer space for sending (in bytes). */
shintamainjp 0:521ba375aa0f 231 #define TCP_SNDQUEUELEN_OVERFLOW (0xffff-3)
shintamainjp 0:521ba375aa0f 232 u16_t snd_queuelen; /* Available buffer space for sending (in tcp_segs). */
shintamainjp 0:521ba375aa0f 233
shintamainjp 0:521ba375aa0f 234 #if TCP_OVERSIZE
shintamainjp 0:521ba375aa0f 235 /* Extra bytes available at the end of the last pbuf in unsent. */
shintamainjp 0:521ba375aa0f 236 u16_t unsent_oversize;
shintamainjp 0:521ba375aa0f 237 #endif /* TCP_OVERSIZE */
shintamainjp 0:521ba375aa0f 238
shintamainjp 0:521ba375aa0f 239 /* These are ordered by sequence number: */
shintamainjp 0:521ba375aa0f 240 struct tcp_seg *unsent; /* Unsent (queued) segments. */
shintamainjp 0:521ba375aa0f 241 struct tcp_seg *unacked; /* Sent but unacknowledged segments. */
shintamainjp 0:521ba375aa0f 242 #if TCP_QUEUE_OOSEQ
shintamainjp 0:521ba375aa0f 243 struct tcp_seg *ooseq; /* Received out of sequence segments. */
shintamainjp 0:521ba375aa0f 244 #endif /* TCP_QUEUE_OOSEQ */
shintamainjp 0:521ba375aa0f 245
shintamainjp 0:521ba375aa0f 246 struct pbuf *refused_data; /* Data previously received but not yet taken by upper layer */
shintamainjp 0:521ba375aa0f 247
shintamainjp 0:521ba375aa0f 248 #if LWIP_CALLBACK_API
shintamainjp 0:521ba375aa0f 249 /* Function to be called when more send buffer space is available. */
shintamainjp 0:521ba375aa0f 250 tcp_sent_fn sent;
shintamainjp 0:521ba375aa0f 251 /* Function to be called when (in-sequence) data has arrived. */
shintamainjp 0:521ba375aa0f 252 tcp_recv_fn recv;
shintamainjp 0:521ba375aa0f 253 /* Function to be called when a connection has been set up. */
shintamainjp 0:521ba375aa0f 254 tcp_connected_fn connected;
shintamainjp 0:521ba375aa0f 255 /* Function which is called periodically. */
shintamainjp 0:521ba375aa0f 256 tcp_poll_fn poll;
shintamainjp 0:521ba375aa0f 257 /* Function to be called whenever a fatal error occurs. */
shintamainjp 0:521ba375aa0f 258 tcp_err_fn errf;
shintamainjp 0:521ba375aa0f 259 #endif /* LWIP_CALLBACK_API */
shintamainjp 0:521ba375aa0f 260
shintamainjp 0:521ba375aa0f 261 #if LWIP_TCP_TIMESTAMPS
shintamainjp 0:521ba375aa0f 262 u32_t ts_lastacksent;
shintamainjp 0:521ba375aa0f 263 u32_t ts_recent;
shintamainjp 0:521ba375aa0f 264 #endif /* LWIP_TCP_TIMESTAMPS */
shintamainjp 0:521ba375aa0f 265
shintamainjp 0:521ba375aa0f 266 /* idle time before KEEPALIVE is sent */
shintamainjp 0:521ba375aa0f 267 u32_t keep_idle;
shintamainjp 0:521ba375aa0f 268 #if LWIP_TCP_KEEPALIVE
shintamainjp 0:521ba375aa0f 269 u32_t keep_intvl;
shintamainjp 0:521ba375aa0f 270 u32_t keep_cnt;
shintamainjp 0:521ba375aa0f 271 #endif /* LWIP_TCP_KEEPALIVE */
shintamainjp 0:521ba375aa0f 272
shintamainjp 0:521ba375aa0f 273 /* Persist timer counter */
shintamainjp 0:521ba375aa0f 274 u32_t persist_cnt;
shintamainjp 0:521ba375aa0f 275 /* Persist timer back-off */
shintamainjp 0:521ba375aa0f 276 u8_t persist_backoff;
shintamainjp 0:521ba375aa0f 277
shintamainjp 0:521ba375aa0f 278 /* KEEPALIVE counter */
shintamainjp 0:521ba375aa0f 279 u8_t keep_cnt_sent;
shintamainjp 0:521ba375aa0f 280 };
shintamainjp 0:521ba375aa0f 281
shintamainjp 0:521ba375aa0f 282 struct tcp_pcb_listen {
shintamainjp 0:521ba375aa0f 283 /* Common members of all PCB types */
shintamainjp 0:521ba375aa0f 284 IP_PCB;
shintamainjp 0:521ba375aa0f 285 /* Protocol specific PCB members */
shintamainjp 0:521ba375aa0f 286 TCP_PCB_COMMON(struct tcp_pcb_listen);
shintamainjp 0:521ba375aa0f 287
shintamainjp 0:521ba375aa0f 288 #if TCP_LISTEN_BACKLOG
shintamainjp 0:521ba375aa0f 289 u8_t backlog;
shintamainjp 0:521ba375aa0f 290 u8_t accepts_pending;
shintamainjp 0:521ba375aa0f 291 #endif /* TCP_LISTEN_BACKLOG */
shintamainjp 0:521ba375aa0f 292 };
shintamainjp 0:521ba375aa0f 293
shintamainjp 0:521ba375aa0f 294 #if LWIP_EVENT_API
shintamainjp 0:521ba375aa0f 295
shintamainjp 0:521ba375aa0f 296 enum lwip_event {
shintamainjp 0:521ba375aa0f 297 LWIP_EVENT_ACCEPT,
shintamainjp 0:521ba375aa0f 298 LWIP_EVENT_SENT,
shintamainjp 0:521ba375aa0f 299 LWIP_EVENT_RECV,
shintamainjp 0:521ba375aa0f 300 LWIP_EVENT_CONNECTED,
shintamainjp 0:521ba375aa0f 301 LWIP_EVENT_POLL,
shintamainjp 0:521ba375aa0f 302 LWIP_EVENT_ERR
shintamainjp 0:521ba375aa0f 303 };
shintamainjp 0:521ba375aa0f 304
shintamainjp 0:521ba375aa0f 305 err_t lwip_tcp_event(void *arg, struct tcp_pcb *pcb,
shintamainjp 0:521ba375aa0f 306 enum lwip_event,
shintamainjp 0:521ba375aa0f 307 struct pbuf *p,
shintamainjp 0:521ba375aa0f 308 u16_t size,
shintamainjp 0:521ba375aa0f 309 err_t err);
shintamainjp 0:521ba375aa0f 310
shintamainjp 0:521ba375aa0f 311 #endif /* LWIP_EVENT_API */
shintamainjp 0:521ba375aa0f 312
shintamainjp 0:521ba375aa0f 313 /* Application program's interface: */
shintamainjp 0:521ba375aa0f 314 struct tcp_pcb * tcp_new (void);
shintamainjp 0:521ba375aa0f 315
shintamainjp 0:521ba375aa0f 316 void tcp_arg (struct tcp_pcb *pcb, void *arg);
shintamainjp 0:521ba375aa0f 317 void tcp_accept (struct tcp_pcb *pcb, tcp_accept_fn accept);
shintamainjp 0:521ba375aa0f 318 void tcp_recv (struct tcp_pcb *pcb, tcp_recv_fn recv);
shintamainjp 0:521ba375aa0f 319 void tcp_sent (struct tcp_pcb *pcb, tcp_sent_fn sent);
shintamainjp 0:521ba375aa0f 320 void tcp_poll (struct tcp_pcb *pcb, tcp_poll_fn poll, u8_t interval);
shintamainjp 0:521ba375aa0f 321 void tcp_err (struct tcp_pcb *pcb, tcp_err_fn err);
shintamainjp 0:521ba375aa0f 322
shintamainjp 0:521ba375aa0f 323 #define tcp_mss(pcb) (((pcb)->flags & TF_TIMESTAMP) ? ((pcb)->mss - 12) : (pcb)->mss)
shintamainjp 0:521ba375aa0f 324 #define tcp_sndbuf(pcb) ((pcb)->snd_buf)
shintamainjp 0:521ba375aa0f 325 #define tcp_sndqueuelen(pcb) ((pcb)->snd_queuelen)
shintamainjp 0:521ba375aa0f 326 #define tcp_nagle_disable(pcb) ((pcb)->flags |= TF_NODELAY)
shintamainjp 0:521ba375aa0f 327 #define tcp_nagle_enable(pcb) ((pcb)->flags &= ~TF_NODELAY)
shintamainjp 0:521ba375aa0f 328 #define tcp_nagle_disabled(pcb) (((pcb)->flags & TF_NODELAY) != 0)
shintamainjp 0:521ba375aa0f 329
shintamainjp 0:521ba375aa0f 330 #if TCP_LISTEN_BACKLOG
shintamainjp 0:521ba375aa0f 331 #define tcp_accepted(pcb) do { \
shintamainjp 0:521ba375aa0f 332 LWIP_ASSERT("pcb->state == LISTEN (called for wrong pcb?)", pcb->state == LISTEN); \
shintamainjp 0:521ba375aa0f 333 (((struct tcp_pcb_listen *)(pcb))->accepts_pending--); } while(0)
shintamainjp 0:521ba375aa0f 334 #else /* TCP_LISTEN_BACKLOG */
shintamainjp 0:521ba375aa0f 335 #define tcp_accepted(pcb) LWIP_ASSERT("pcb->state == LISTEN (called for wrong pcb?)", \
shintamainjp 0:521ba375aa0f 336 pcb->state == LISTEN)
shintamainjp 0:521ba375aa0f 337 #endif /* TCP_LISTEN_BACKLOG */
shintamainjp 0:521ba375aa0f 338
shintamainjp 0:521ba375aa0f 339 void tcp_recved (struct tcp_pcb *pcb, u16_t len);
shintamainjp 0:521ba375aa0f 340 err_t tcp_bind (struct tcp_pcb *pcb, ip_addr_t *ipaddr,
shintamainjp 0:521ba375aa0f 341 u16_t port);
shintamainjp 0:521ba375aa0f 342 err_t tcp_connect (struct tcp_pcb *pcb, ip_addr_t *ipaddr,
shintamainjp 0:521ba375aa0f 343 u16_t port, tcp_connected_fn connected);
shintamainjp 0:521ba375aa0f 344
shintamainjp 0:521ba375aa0f 345 struct tcp_pcb * tcp_listen_with_backlog(struct tcp_pcb *pcb, u8_t backlog);
shintamainjp 0:521ba375aa0f 346 #define tcp_listen(pcb) tcp_listen_with_backlog(pcb, TCP_DEFAULT_LISTEN_BACKLOG)
shintamainjp 0:521ba375aa0f 347
shintamainjp 0:521ba375aa0f 348 void tcp_abort (struct tcp_pcb *pcb);
shintamainjp 0:521ba375aa0f 349 err_t tcp_close (struct tcp_pcb *pcb);
shintamainjp 0:521ba375aa0f 350 err_t tcp_shutdown(struct tcp_pcb *pcb, int shut_rx, int shut_tx);
shintamainjp 0:521ba375aa0f 351
shintamainjp 0:521ba375aa0f 352 /* Flags for "apiflags" parameter in tcp_write */
shintamainjp 0:521ba375aa0f 353 #define TCP_WRITE_FLAG_COPY 0x01
shintamainjp 0:521ba375aa0f 354 #define TCP_WRITE_FLAG_MORE 0x02
shintamainjp 0:521ba375aa0f 355
shintamainjp 0:521ba375aa0f 356 err_t tcp_write (struct tcp_pcb *pcb, const void *dataptr, u16_t len,
shintamainjp 0:521ba375aa0f 357 u8_t apiflags);
shintamainjp 0:521ba375aa0f 358
shintamainjp 0:521ba375aa0f 359 void tcp_setprio (struct tcp_pcb *pcb, u8_t prio);
shintamainjp 0:521ba375aa0f 360
shintamainjp 0:521ba375aa0f 361 #define TCP_PRIO_MIN 1
shintamainjp 0:521ba375aa0f 362 #define TCP_PRIO_NORMAL 64
shintamainjp 0:521ba375aa0f 363 #define TCP_PRIO_MAX 127
shintamainjp 0:521ba375aa0f 364
shintamainjp 0:521ba375aa0f 365 err_t tcp_output (struct tcp_pcb *pcb);
shintamainjp 0:521ba375aa0f 366
shintamainjp 0:521ba375aa0f 367
shintamainjp 0:521ba375aa0f 368 const char* tcp_debug_state_str(enum tcp_state s);
shintamainjp 0:521ba375aa0f 369
shintamainjp 0:521ba375aa0f 370
shintamainjp 0:521ba375aa0f 371 #ifdef __cplusplus
shintamainjp 0:521ba375aa0f 372 }
shintamainjp 0:521ba375aa0f 373 #endif
shintamainjp 0:521ba375aa0f 374
shintamainjp 0:521ba375aa0f 375 #endif /* LWIP_TCP */
shintamainjp 0:521ba375aa0f 376
shintamainjp 0:521ba375aa0f 377 #endif /* __LWIP_TCP_H__ */