2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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3 * All rights reserved.
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5 * Redistribution and use in source and binary forms, with or without modification,
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6 * are permitted provided that the following conditions are met:
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8 * 1. Redistributions of source code must retain the above copyright notice,
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9 * this list of conditions and the following disclaimer.
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10 * 2. Redistributions in binary form must reproduce the above copyright notice,
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11 * this list of conditions and the following disclaimer in the documentation
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12 * and/or other materials provided with the distribution.
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13 * 3. The name of the author may not be used to endorse or promote products
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14 * derived from this software without specific prior written permission.
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16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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27 * This file is part of the lwIP TCP/IP stack.
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29 * Author: Adam Dunkels <adam@sics.se>
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34 #ifndef __LWIP_SOCKETS_H__
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35 #define __LWIP_SOCKETS_H__
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36 #include "lwip/ip_addr.h"
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38 struct sockaddr_in {
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42 struct in_addr sin_addr;
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53 # define socklen_t int
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57 #define SOCK_STREAM 1
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58 #define SOCK_DGRAM 2
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62 * Option flags per-socket.
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64 #define SO_DEBUG 0x0001 /* turn on debugging info recording */
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65 #define SO_ACCEPTCONN 0x0002 /* socket has had listen() */
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66 #define SO_REUSEADDR 0x0004 /* allow local address reuse */
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67 #define SO_KEEPALIVE 0x0008 /* keep connections alive */
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68 #define SO_DONTROUTE 0x0010 /* just use interface addresses */
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69 #define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */
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70 #define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */
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71 #define SO_LINGER 0x0080 /* linger on close if data present */
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72 #define SO_OOBINLINE 0x0100 /* leave received OOB data in line */
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73 #define SO_REUSEPORT 0x0200 /* allow local address & port reuse */
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75 #define SO_DONTLINGER (int)(~SO_LINGER)
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78 * Additional options, not kept in so_options.
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80 #define SO_SNDBUF 0x1001 /* send buffer size */
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81 #define SO_RCVBUF 0x1002 /* receive buffer size */
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82 #define SO_SNDLOWAT 0x1003 /* send low-water mark */
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83 #define SO_RCVLOWAT 0x1004 /* receive low-water mark */
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84 #define SO_SNDTIMEO 0x1005 /* send timeout */
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85 #define SO_RCVTIMEO 0x1006 /* receive timeout */
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86 #define SO_ERROR 0x1007 /* get error status and clear */
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87 #define SO_TYPE 0x1008 /* get socket type */
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92 * Structure used for manipulating linger option.
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95 int l_onoff; /* option on/off */
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96 int l_linger; /* linger time */
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100 * Level number for (get/set)sockopt() to apply to socket itself.
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102 #define SOL_SOCKET 0xfff /* options for socket level */
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105 #define AF_UNSPEC 0
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107 #define PF_INET AF_INET
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108 #define PF_UNSPEC AF_UNSPEC
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110 #define IPPROTO_IP 0
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111 #define IPPROTO_TCP 6
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112 #define IPPROTO_UDP 17
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114 #define INADDR_ANY 0
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115 #define INADDR_BROADCAST 0xffffffff
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117 /* Flags we can use with send and recv. */
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118 #define MSG_DONTWAIT 0x40 /* Nonblocking i/o for this operation only */
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122 * Options for level IPPROTO_IP
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128 #define IPTOS_TOS_MASK 0x1E
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129 #define IPTOS_TOS(tos) ((tos) & IPTOS_TOS_MASK)
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130 #define IPTOS_LOWDELAY 0x10
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131 #define IPTOS_THROUGHPUT 0x08
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132 #define IPTOS_RELIABILITY 0x04
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133 #define IPTOS_LOWCOST 0x02
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134 #define IPTOS_MINCOST IPTOS_LOWCOST
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137 * Definitions for IP precedence (also in ip_tos) (hopefully unused)
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139 #define IPTOS_PREC_MASK 0xe0
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140 #define IPTOS_PREC(tos) ((tos) & IPTOS_PREC_MASK)
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141 #define IPTOS_PREC_NETCONTROL 0xe0
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142 #define IPTOS_PREC_INTERNETCONTROL 0xc0
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143 #define IPTOS_PREC_CRITIC_ECP 0xa0
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144 #define IPTOS_PREC_FLASHOVERRIDE 0x80
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145 #define IPTOS_PREC_FLASH 0x60
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146 #define IPTOS_PREC_IMMEDIATE 0x40
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147 #define IPTOS_PREC_PRIORITY 0x20
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148 #define IPTOS_PREC_ROUTINE 0x00
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152 * Commands for ioctlsocket(), taken from the BSD file fcntl.h.
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155 * Ioctl's have the command encoded in the lower word,
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156 * and the size of any in or out parameters in the upper
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157 * word. The high 2 bits of the upper word are used
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158 * to encode the in/out status of the parameter; for now
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159 * we restrict parameters to at most 128 bytes.
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161 #if !defined(FIONREAD) || !defined(FIONBIO)
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162 #define IOCPARM_MASK 0x7f /* parameters must be < 128 bytes */
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163 #define IOC_VOID 0x20000000 /* no parameters */
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164 #define IOC_OUT 0x40000000 /* copy out parameters */
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165 #define IOC_IN 0x80000000 /* copy in parameters */
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166 #define IOC_INOUT (IOC_IN|IOC_OUT)
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167 /* 0x20000000 distinguishes new &
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169 #define _IO(x,y) (IOC_VOID|((x)<<8)|(y))
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171 #define _IOR(x,y,t) (IOC_OUT|(((long)sizeof(t)&IOCPARM_MASK)<<16)|((x)<<8)|(y))
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173 #define _IOW(x,y,t) (IOC_IN|(((long)sizeof(t)&IOCPARM_MASK)<<16)|((x)<<8)|(y))
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177 #define FIONREAD _IOR('f', 127, unsigned long) /* get # bytes to read */
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180 #define FIONBIO _IOW('f', 126, unsigned long) /* set/clear non-blocking i/o */
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183 /* Socket I/O Controls */
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185 #define SIOCSHIWAT _IOW('s', 0, unsigned long) /* set high watermark */
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186 #define SIOCGHIWAT _IOR('s', 1, unsigned long) /* get high watermark */
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187 #define SIOCSLOWAT _IOW('s', 2, unsigned long) /* set low watermark */
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188 #define SIOCGLOWAT _IOR('s', 3, unsigned long) /* get low watermark */
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189 #define SIOCATMARK _IOR('s', 7, unsigned long) /* at oob mark? */
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193 #define O_NONBLOCK 04000U
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198 #define FD_SETSIZE 16
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199 #define FD_SET(n, p) ((p)->fd_bits[(n)/8] |= (1 << ((n) & 7)))
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200 #define FD_CLR(n, p) ((p)->fd_bits[(n)/8] &= ~(1 << ((n) & 7)))
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201 #define FD_ISSET(n,p) ((p)->fd_bits[(n)/8] & (1 << ((n) & 7)))
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202 #define FD_ZERO(p) memset((void*)(p),0,sizeof(*(p)))
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204 typedef struct fd_set {
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205 unsigned char fd_bits [(FD_SETSIZE+7)/8];
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209 * only define this in sockets.c so it does not interfere
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210 * with other projects namespaces where timeval is present
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212 #ifndef LWIP_TIMEVAL_PRIVATE
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213 #define LWIP_TIMEVAL_PRIVATE 1
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216 #if LWIP_TIMEVAL_PRIVATE
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218 long tv_sec; /* seconds */
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219 long tv_usec; /* and microseconds */
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225 int lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen);
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226 int lwip_bind(int s, struct sockaddr *name, socklen_t namelen);
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227 int lwip_shutdown(int s, int how);
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228 int lwip_getpeername (int s, struct sockaddr *name, socklen_t *namelen);
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229 int lwip_getsockname (int s, struct sockaddr *name, socklen_t *namelen);
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230 int lwip_getsockopt (int s, int level, int optname, void *optval, socklen_t *optlen);
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231 int lwip_setsockopt (int s, int level, int optname, const void *optval, socklen_t optlen);
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232 int lwip_close(int s);
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233 int lwip_connect(int s, struct sockaddr *name, socklen_t namelen);
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234 int lwip_listen(int s, int backlog);
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235 int lwip_recv(int s, void *mem, int len, unsigned int flags);
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236 int lwip_read(int s, void *mem, int len);
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237 int lwip_recvfrom(int s, void *mem, int len, unsigned int flags,
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238 struct sockaddr *from, socklen_t *fromlen);
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239 int lwip_send(int s, void *dataptr, int size, unsigned int flags);
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240 int lwip_sendto(int s, void *dataptr, int size, unsigned int flags,
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241 struct sockaddr *to, socklen_t tolen);
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242 int lwip_socket(int domain, int type, int protocol);
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243 int lwip_write(int s, void *dataptr, int size);
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244 int lwip_select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset,
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245 struct timeval *timeout);
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246 int lwip_ioctl(int s, long cmd, void *argp);
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248 #if LWIP_COMPAT_SOCKETS
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249 #define accept(a,b,c) lwip_accept(a,b,c)
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250 #define bind(a,b,c) lwip_bind(a,b,c)
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251 #define shutdown(a,b) lwip_shutdown(a,b)
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252 #define close(s) lwip_close(s)
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253 #define connect(a,b,c) lwip_connect(a,b,c)
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254 #define getsockname(a,b,c) lwip_getsockname(a,b,c)
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255 #define getpeername(a,b,c) lwip_getpeername(a,b,c)
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256 #define setsockopt(a,b,c,d,e) lwip_setsockopt(a,b,c,d,e)
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257 #define getsockopt(a,b,c,d,e) lwip_getsockopt(a,b,c,d,e)
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258 #define listen(a,b) lwip_listen(a,b)
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259 #define recv(a,b,c,d) lwip_recv(a,b,c,d)
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260 #define read(a,b,c) lwip_read(a,b,c)
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261 #define recvfrom(a,b,c,d,e,f) lwip_recvfrom(a,b,c,d,e,f)
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262 #define send(a,b,c,d) lwip_send(a,b,c,d)
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263 #define sendto(a,b,c,d,e,f) lwip_sendto(a,b,c,d,e,f)
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264 #define socket(a,b,c) lwip_socket(a,b,c)
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265 #define write(a,b,c) lwip_write(a,b,c)
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266 #define select(a,b,c,d,e) lwip_select(a,b,c,d,e)
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267 #define ioctlsocket(a,b,c) lwip_ioctl(a,b,c)
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268 #endif /* LWIP_COMPAT_SOCKETS */
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270 #endif /* __LWIP_SOCKETS_H__ */
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