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lwip/api/api_lib.c@0:d7bd7384a37c, 2016-12-07 (annotated)

Committer:
grzemich
Date:
Wed Dec 07 23:47:50 2016 +0000
Revision:
0:d7bd7384a37c
dgd

Who changed what in which revision?

UserRevisionLine numberNew contents of line
grzemich 0:d7bd7384a37c 1 /**
grzemich 0:d7bd7384a37c 2 * @file
grzemich 0:d7bd7384a37c 3 * Sequential API External module
grzemich 0:d7bd7384a37c 4 *
grzemich 0:d7bd7384a37c 5 */
grzemich 0:d7bd7384a37c 6
grzemich 0:d7bd7384a37c 7 /*
grzemich 0:d7bd7384a37c 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
grzemich 0:d7bd7384a37c 9 * All rights reserved.
grzemich 0:d7bd7384a37c 10 *
grzemich 0:d7bd7384a37c 11 * Redistribution and use in source and binary forms, with or without modification,
grzemich 0:d7bd7384a37c 12 * are permitted provided that the following conditions are met:
grzemich 0:d7bd7384a37c 13 *
grzemich 0:d7bd7384a37c 14 * 1. Redistributions of source code must retain the above copyright notice,
grzemich 0:d7bd7384a37c 15 * this list of conditions and the following disclaimer.
grzemich 0:d7bd7384a37c 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
grzemich 0:d7bd7384a37c 17 * this list of conditions and the following disclaimer in the documentation
grzemich 0:d7bd7384a37c 18 * and/or other materials provided with the distribution.
grzemich 0:d7bd7384a37c 19 * 3. The name of the author may not be used to endorse or promote products
grzemich 0:d7bd7384a37c 20 * derived from this software without specific prior written permission.
grzemich 0:d7bd7384a37c 21 *
grzemich 0:d7bd7384a37c 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
grzemich 0:d7bd7384a37c 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
grzemich 0:d7bd7384a37c 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
grzemich 0:d7bd7384a37c 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
grzemich 0:d7bd7384a37c 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
grzemich 0:d7bd7384a37c 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
grzemich 0:d7bd7384a37c 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
grzemich 0:d7bd7384a37c 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
grzemich 0:d7bd7384a37c 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
grzemich 0:d7bd7384a37c 31 * OF SUCH DAMAGE.
grzemich 0:d7bd7384a37c 32 *
grzemich 0:d7bd7384a37c 33 * This file is part of the lwIP TCP/IP stack.
grzemich 0:d7bd7384a37c 34 *
grzemich 0:d7bd7384a37c 35 * Author: Adam Dunkels <adam@sics.se>
grzemich 0:d7bd7384a37c 36 *
grzemich 0:d7bd7384a37c 37 */
grzemich 0:d7bd7384a37c 38
grzemich 0:d7bd7384a37c 39 /* This is the part of the API that is linked with
grzemich 0:d7bd7384a37c 40 the application */
grzemich 0:d7bd7384a37c 41
grzemich 0:d7bd7384a37c 42 #include "lwip/opt.h"
grzemich 0:d7bd7384a37c 43
grzemich 0:d7bd7384a37c 44 #if LWIP_NETCONN /* don't build if not configured for use in lwipopts.h */
grzemich 0:d7bd7384a37c 45
grzemich 0:d7bd7384a37c 46 #include "lwip/api.h"
grzemich 0:d7bd7384a37c 47 #include "lwip/tcpip.h"
grzemich 0:d7bd7384a37c 48 #include "lwip/memp.h"
grzemich 0:d7bd7384a37c 49
grzemich 0:d7bd7384a37c 50 #include "lwip/ip.h"
grzemich 0:d7bd7384a37c 51 #include "lwip/raw.h"
grzemich 0:d7bd7384a37c 52 #include "lwip/udp.h"
grzemich 0:d7bd7384a37c 53 #include "lwip/tcp.h"
grzemich 0:d7bd7384a37c 54
grzemich 0:d7bd7384a37c 55 #include <string.h>
grzemich 0:d7bd7384a37c 56
grzemich 0:d7bd7384a37c 57 /**
grzemich 0:d7bd7384a37c 58 * Create a new netconn (of a specific type) that has a callback function.
grzemich 0:d7bd7384a37c 59 * The corresponding pcb is also created.
grzemich 0:d7bd7384a37c 60 *
grzemich 0:d7bd7384a37c 61 * @param t the type of 'connection' to create (@see enum netconn_type)
grzemich 0:d7bd7384a37c 62 * @param proto the IP protocol for RAW IP pcbs
grzemich 0:d7bd7384a37c 63 * @param callback a function to call on status changes (RX available, TX'ed)
grzemich 0:d7bd7384a37c 64 * @return a newly allocated struct netconn or
grzemich 0:d7bd7384a37c 65 * NULL on memory error
grzemich 0:d7bd7384a37c 66 */
grzemich 0:d7bd7384a37c 67 struct netconn*
grzemich 0:d7bd7384a37c 68 netconn_new_with_proto_and_callback(enum netconn_type t, u8_t proto, netconn_callback callback)
grzemich 0:d7bd7384a37c 69 {
grzemich 0:d7bd7384a37c 70 struct netconn *conn;
grzemich 0:d7bd7384a37c 71 struct api_msg msg;
grzemich 0:d7bd7384a37c 72
grzemich 0:d7bd7384a37c 73 conn = netconn_alloc(t, callback);
grzemich 0:d7bd7384a37c 74 if (conn != NULL) {
grzemich 0:d7bd7384a37c 75 msg.function = do_newconn;
grzemich 0:d7bd7384a37c 76 msg.msg.msg.n.proto = proto;
grzemich 0:d7bd7384a37c 77 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 78 if (TCPIP_APIMSG(&msg) != ERR_OK) {
grzemich 0:d7bd7384a37c 79 LWIP_ASSERT("freeing conn without freeing pcb", conn->pcb.tcp == NULL);
grzemich 0:d7bd7384a37c 80 LWIP_ASSERT("conn has no op_completed", sys_sem_valid(&conn->op_completed));
grzemich 0:d7bd7384a37c 81 LWIP_ASSERT("conn has no recvmbox", sys_mbox_valid(&conn->recvmbox));
grzemich 0:d7bd7384a37c 82 #if LWIP_TCP
grzemich 0:d7bd7384a37c 83 LWIP_ASSERT("conn->acceptmbox shouldn't exist", !sys_mbox_valid(&conn->acceptmbox));
grzemich 0:d7bd7384a37c 84 #endif /* LWIP_TCP */
grzemich 0:d7bd7384a37c 85 sys_sem_free(&conn->op_completed);
grzemich 0:d7bd7384a37c 86 sys_mbox_free(&conn->recvmbox);
grzemich 0:d7bd7384a37c 87 memp_free(MEMP_NETCONN, conn);
grzemich 0:d7bd7384a37c 88 return NULL;
grzemich 0:d7bd7384a37c 89 }
grzemich 0:d7bd7384a37c 90 }
grzemich 0:d7bd7384a37c 91 return conn;
grzemich 0:d7bd7384a37c 92 }
grzemich 0:d7bd7384a37c 93
grzemich 0:d7bd7384a37c 94 /**
grzemich 0:d7bd7384a37c 95 * Close a netconn 'connection' and free its resources.
grzemich 0:d7bd7384a37c 96 * UDP and RAW connection are completely closed, TCP pcbs might still be in a waitstate
grzemich 0:d7bd7384a37c 97 * after this returns.
grzemich 0:d7bd7384a37c 98 *
grzemich 0:d7bd7384a37c 99 * @param conn the netconn to delete
grzemich 0:d7bd7384a37c 100 * @return ERR_OK if the connection was deleted
grzemich 0:d7bd7384a37c 101 */
grzemich 0:d7bd7384a37c 102 err_t
grzemich 0:d7bd7384a37c 103 netconn_delete(struct netconn *conn)
grzemich 0:d7bd7384a37c 104 {
grzemich 0:d7bd7384a37c 105 struct api_msg msg;
grzemich 0:d7bd7384a37c 106
grzemich 0:d7bd7384a37c 107 /* No ASSERT here because possible to get a (conn == NULL) if we got an accept error */
grzemich 0:d7bd7384a37c 108 if (conn == NULL) {
grzemich 0:d7bd7384a37c 109 return ERR_OK;
grzemich 0:d7bd7384a37c 110 }
grzemich 0:d7bd7384a37c 111
grzemich 0:d7bd7384a37c 112 msg.function = do_delconn;
grzemich 0:d7bd7384a37c 113 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 114 tcpip_apimsg(&msg);
grzemich 0:d7bd7384a37c 115
grzemich 0:d7bd7384a37c 116 netconn_free(conn);
grzemich 0:d7bd7384a37c 117
grzemich 0:d7bd7384a37c 118 /* don't care for return value of do_delconn since it only calls void functions */
grzemich 0:d7bd7384a37c 119
grzemich 0:d7bd7384a37c 120 return ERR_OK;
grzemich 0:d7bd7384a37c 121 }
grzemich 0:d7bd7384a37c 122
grzemich 0:d7bd7384a37c 123 /**
grzemich 0:d7bd7384a37c 124 * Get the local or remote IP address and port of a netconn.
grzemich 0:d7bd7384a37c 125 * For RAW netconns, this returns the protocol instead of a port!
grzemich 0:d7bd7384a37c 126 *
grzemich 0:d7bd7384a37c 127 * @param conn the netconn to query
grzemich 0:d7bd7384a37c 128 * @param addr a pointer to which to save the IP address
grzemich 0:d7bd7384a37c 129 * @param port a pointer to which to save the port (or protocol for RAW)
grzemich 0:d7bd7384a37c 130 * @param local 1 to get the local IP address, 0 to get the remote one
grzemich 0:d7bd7384a37c 131 * @return ERR_CONN for invalid connections
grzemich 0:d7bd7384a37c 132 * ERR_OK if the information was retrieved
grzemich 0:d7bd7384a37c 133 */
grzemich 0:d7bd7384a37c 134 err_t
grzemich 0:d7bd7384a37c 135 netconn_getaddr(struct netconn *conn, ip_addr_t *addr, u16_t *port, u8_t local)
grzemich 0:d7bd7384a37c 136 {
grzemich 0:d7bd7384a37c 137 struct api_msg msg;
grzemich 0:d7bd7384a37c 138 err_t err;
grzemich 0:d7bd7384a37c 139
grzemich 0:d7bd7384a37c 140 LWIP_ERROR("netconn_getaddr: invalid conn", (conn != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 141 LWIP_ERROR("netconn_getaddr: invalid addr", (addr != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 142 LWIP_ERROR("netconn_getaddr: invalid port", (port != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 143
grzemich 0:d7bd7384a37c 144 msg.function = do_getaddr;
grzemich 0:d7bd7384a37c 145 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 146 msg.msg.msg.ad.ipaddr = addr;
grzemich 0:d7bd7384a37c 147 msg.msg.msg.ad.port = port;
grzemich 0:d7bd7384a37c 148 msg.msg.msg.ad.local = local;
grzemich 0:d7bd7384a37c 149 err = TCPIP_APIMSG(&msg);
grzemich 0:d7bd7384a37c 150
grzemich 0:d7bd7384a37c 151 NETCONN_SET_SAFE_ERR(conn, err);
grzemich 0:d7bd7384a37c 152 return err;
grzemich 0:d7bd7384a37c 153 }
grzemich 0:d7bd7384a37c 154
grzemich 0:d7bd7384a37c 155 /**
grzemich 0:d7bd7384a37c 156 * Bind a netconn to a specific local IP address and port.
grzemich 0:d7bd7384a37c 157 * Binding one netconn twice might not always be checked correctly!
grzemich 0:d7bd7384a37c 158 *
grzemich 0:d7bd7384a37c 159 * @param conn the netconn to bind
grzemich 0:d7bd7384a37c 160 * @param addr the local IP address to bind the netconn to (use IP_ADDR_ANY
grzemich 0:d7bd7384a37c 161 * to bind to all addresses)
grzemich 0:d7bd7384a37c 162 * @param port the local port to bind the netconn to (not used for RAW)
grzemich 0:d7bd7384a37c 163 * @return ERR_OK if bound, any other err_t on failure
grzemich 0:d7bd7384a37c 164 */
grzemich 0:d7bd7384a37c 165 err_t
grzemich 0:d7bd7384a37c 166 netconn_bind(struct netconn *conn, ip_addr_t *addr, u16_t port)
grzemich 0:d7bd7384a37c 167 {
grzemich 0:d7bd7384a37c 168 struct api_msg msg;
grzemich 0:d7bd7384a37c 169 err_t err;
grzemich 0:d7bd7384a37c 170
grzemich 0:d7bd7384a37c 171 LWIP_ERROR("netconn_bind: invalid conn", (conn != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 172
grzemich 0:d7bd7384a37c 173 msg.function = do_bind;
grzemich 0:d7bd7384a37c 174 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 175 msg.msg.msg.bc.ipaddr = addr;
grzemich 0:d7bd7384a37c 176 msg.msg.msg.bc.port = port;
grzemich 0:d7bd7384a37c 177 err = TCPIP_APIMSG(&msg);
grzemich 0:d7bd7384a37c 178
grzemich 0:d7bd7384a37c 179 NETCONN_SET_SAFE_ERR(conn, err);
grzemich 0:d7bd7384a37c 180 return err;
grzemich 0:d7bd7384a37c 181 }
grzemich 0:d7bd7384a37c 182
grzemich 0:d7bd7384a37c 183 /**
grzemich 0:d7bd7384a37c 184 * Connect a netconn to a specific remote IP address and port.
grzemich 0:d7bd7384a37c 185 *
grzemich 0:d7bd7384a37c 186 * @param conn the netconn to connect
grzemich 0:d7bd7384a37c 187 * @param addr the remote IP address to connect to
grzemich 0:d7bd7384a37c 188 * @param port the remote port to connect to (no used for RAW)
grzemich 0:d7bd7384a37c 189 * @return ERR_OK if connected, return value of tcp_/udp_/raw_connect otherwise
grzemich 0:d7bd7384a37c 190 */
grzemich 0:d7bd7384a37c 191 err_t
grzemich 0:d7bd7384a37c 192 netconn_connect(struct netconn *conn, ip_addr_t *addr, u16_t port)
grzemich 0:d7bd7384a37c 193 {
grzemich 0:d7bd7384a37c 194 struct api_msg msg;
grzemich 0:d7bd7384a37c 195 err_t err;
grzemich 0:d7bd7384a37c 196
grzemich 0:d7bd7384a37c 197 LWIP_ERROR("netconn_connect: invalid conn", (conn != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 198
grzemich 0:d7bd7384a37c 199 msg.function = do_connect;
grzemich 0:d7bd7384a37c 200 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 201 msg.msg.msg.bc.ipaddr = addr;
grzemich 0:d7bd7384a37c 202 msg.msg.msg.bc.port = port;
grzemich 0:d7bd7384a37c 203 /* This is the only function which need to not block tcpip_thread */
grzemich 0:d7bd7384a37c 204 err = tcpip_apimsg(&msg);
grzemich 0:d7bd7384a37c 205
grzemich 0:d7bd7384a37c 206 NETCONN_SET_SAFE_ERR(conn, err);
grzemich 0:d7bd7384a37c 207 return err;
grzemich 0:d7bd7384a37c 208 }
grzemich 0:d7bd7384a37c 209
grzemich 0:d7bd7384a37c 210 /**
grzemich 0:d7bd7384a37c 211 * Disconnect a netconn from its current peer (only valid for UDP netconns).
grzemich 0:d7bd7384a37c 212 *
grzemich 0:d7bd7384a37c 213 * @param conn the netconn to disconnect
grzemich 0:d7bd7384a37c 214 * @return TODO: return value is not set here...
grzemich 0:d7bd7384a37c 215 */
grzemich 0:d7bd7384a37c 216 err_t
grzemich 0:d7bd7384a37c 217 netconn_disconnect(struct netconn *conn)
grzemich 0:d7bd7384a37c 218 {
grzemich 0:d7bd7384a37c 219 struct api_msg msg;
grzemich 0:d7bd7384a37c 220 err_t err;
grzemich 0:d7bd7384a37c 221
grzemich 0:d7bd7384a37c 222 LWIP_ERROR("netconn_disconnect: invalid conn", (conn != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 223
grzemich 0:d7bd7384a37c 224 msg.function = do_disconnect;
grzemich 0:d7bd7384a37c 225 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 226 err = TCPIP_APIMSG(&msg);
grzemich 0:d7bd7384a37c 227
grzemich 0:d7bd7384a37c 228 NETCONN_SET_SAFE_ERR(conn, err);
grzemich 0:d7bd7384a37c 229 return err;
grzemich 0:d7bd7384a37c 230 }
grzemich 0:d7bd7384a37c 231
grzemich 0:d7bd7384a37c 232 /**
grzemich 0:d7bd7384a37c 233 * Set a TCP netconn into listen mode
grzemich 0:d7bd7384a37c 234 *
grzemich 0:d7bd7384a37c 235 * @param conn the tcp netconn to set to listen mode
grzemich 0:d7bd7384a37c 236 * @param backlog the listen backlog, only used if TCP_LISTEN_BACKLOG==1
grzemich 0:d7bd7384a37c 237 * @return ERR_OK if the netconn was set to listen (UDP and RAW netconns
grzemich 0:d7bd7384a37c 238 * don't return any error (yet?))
grzemich 0:d7bd7384a37c 239 */
grzemich 0:d7bd7384a37c 240 err_t
grzemich 0:d7bd7384a37c 241 netconn_listen_with_backlog(struct netconn *conn, u8_t backlog)
grzemich 0:d7bd7384a37c 242 {
grzemich 0:d7bd7384a37c 243 #if LWIP_TCP
grzemich 0:d7bd7384a37c 244 struct api_msg msg;
grzemich 0:d7bd7384a37c 245 err_t err;
grzemich 0:d7bd7384a37c 246
grzemich 0:d7bd7384a37c 247 /* This does no harm. If TCP_LISTEN_BACKLOG is off, backlog is unused. */
grzemich 0:d7bd7384a37c 248 LWIP_UNUSED_ARG(backlog);
grzemich 0:d7bd7384a37c 249
grzemich 0:d7bd7384a37c 250 LWIP_ERROR("netconn_listen: invalid conn", (conn != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 251
grzemich 0:d7bd7384a37c 252 msg.function = do_listen;
grzemich 0:d7bd7384a37c 253 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 254 #if TCP_LISTEN_BACKLOG
grzemich 0:d7bd7384a37c 255 msg.msg.msg.lb.backlog = backlog;
grzemich 0:d7bd7384a37c 256 #endif /* TCP_LISTEN_BACKLOG */
grzemich 0:d7bd7384a37c 257 err = TCPIP_APIMSG(&msg);
grzemich 0:d7bd7384a37c 258
grzemich 0:d7bd7384a37c 259 NETCONN_SET_SAFE_ERR(conn, err);
grzemich 0:d7bd7384a37c 260 return err;
grzemich 0:d7bd7384a37c 261 #else /* LWIP_TCP */
grzemich 0:d7bd7384a37c 262 LWIP_UNUSED_ARG(conn);
grzemich 0:d7bd7384a37c 263 LWIP_UNUSED_ARG(backlog);
grzemich 0:d7bd7384a37c 264 return ERR_ARG;
grzemich 0:d7bd7384a37c 265 #endif /* LWIP_TCP */
grzemich 0:d7bd7384a37c 266 }
grzemich 0:d7bd7384a37c 267
grzemich 0:d7bd7384a37c 268 /**
grzemich 0:d7bd7384a37c 269 * Accept a new connection on a TCP listening netconn.
grzemich 0:d7bd7384a37c 270 *
grzemich 0:d7bd7384a37c 271 * @param conn the TCP listen netconn
grzemich 0:d7bd7384a37c 272 * @param new_conn pointer where the new connection is stored
grzemich 0:d7bd7384a37c 273 * @return ERR_OK if a new connection has been received or an error
grzemich 0:d7bd7384a37c 274 * code otherwise
grzemich 0:d7bd7384a37c 275 */
grzemich 0:d7bd7384a37c 276 err_t
grzemich 0:d7bd7384a37c 277 netconn_accept(struct netconn *conn, struct netconn **new_conn)
grzemich 0:d7bd7384a37c 278 {
grzemich 0:d7bd7384a37c 279 #if LWIP_TCP
grzemich 0:d7bd7384a37c 280 struct netconn *newconn;
grzemich 0:d7bd7384a37c 281 err_t err;
grzemich 0:d7bd7384a37c 282 #if TCP_LISTEN_BACKLOG
grzemich 0:d7bd7384a37c 283 struct api_msg msg;
grzemich 0:d7bd7384a37c 284 #endif /* TCP_LISTEN_BACKLOG */
grzemich 0:d7bd7384a37c 285
grzemich 0:d7bd7384a37c 286 LWIP_ERROR("netconn_accept: invalid pointer", (new_conn != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 287 *new_conn = NULL;
grzemich 0:d7bd7384a37c 288 LWIP_ERROR("netconn_accept: invalid conn", (conn != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 289 LWIP_ERROR("netconn_accept: invalid acceptmbox", sys_mbox_valid(&conn->acceptmbox), return ERR_ARG;);
grzemich 0:d7bd7384a37c 290
grzemich 0:d7bd7384a37c 291 err = conn->last_err;
grzemich 0:d7bd7384a37c 292 if (ERR_IS_FATAL(err)) {
grzemich 0:d7bd7384a37c 293 /* don't recv on fatal errors: this might block the application task
grzemich 0:d7bd7384a37c 294 waiting on acceptmbox forever! */
grzemich 0:d7bd7384a37c 295 return err;
grzemich 0:d7bd7384a37c 296 }
grzemich 0:d7bd7384a37c 297
grzemich 0:d7bd7384a37c 298 #if LWIP_SO_RCVTIMEO
grzemich 0:d7bd7384a37c 299 if (sys_arch_mbox_fetch(&conn->acceptmbox, (void **)&newconn, conn->recv_timeout) == SYS_ARCH_TIMEOUT) {
grzemich 0:d7bd7384a37c 300 NETCONN_SET_SAFE_ERR(conn, ERR_TIMEOUT);
grzemich 0:d7bd7384a37c 301 return ERR_TIMEOUT;
grzemich 0:d7bd7384a37c 302 }
grzemich 0:d7bd7384a37c 303 #else
grzemich 0:d7bd7384a37c 304 sys_arch_mbox_fetch(&conn->acceptmbox, (void **)&newconn, 0);
grzemich 0:d7bd7384a37c 305 #endif /* LWIP_SO_RCVTIMEO*/
grzemich 0:d7bd7384a37c 306 /* Register event with callback */
grzemich 0:d7bd7384a37c 307 API_EVENT(conn, NETCONN_EVT_RCVMINUS, 0);
grzemich 0:d7bd7384a37c 308
grzemich 0:d7bd7384a37c 309 if (newconn == NULL) {
grzemich 0:d7bd7384a37c 310 /* connection has been aborted */
grzemich 0:d7bd7384a37c 311 NETCONN_SET_SAFE_ERR(conn, ERR_ABRT);
grzemich 0:d7bd7384a37c 312 return ERR_ABRT;
grzemich 0:d7bd7384a37c 313 }
grzemich 0:d7bd7384a37c 314 #if TCP_LISTEN_BACKLOG
grzemich 0:d7bd7384a37c 315 /* Let the stack know that we have accepted the connection. */
grzemich 0:d7bd7384a37c 316 msg.function = do_recv;
grzemich 0:d7bd7384a37c 317 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 318 /* don't care for the return value of do_recv */
grzemich 0:d7bd7384a37c 319 TCPIP_APIMSG(&msg);
grzemich 0:d7bd7384a37c 320 #endif /* TCP_LISTEN_BACKLOG */
grzemich 0:d7bd7384a37c 321
grzemich 0:d7bd7384a37c 322 *new_conn = newconn;
grzemich 0:d7bd7384a37c 323 /* don't set conn->last_err: it's only ERR_OK, anyway */
grzemich 0:d7bd7384a37c 324 return ERR_OK;
grzemich 0:d7bd7384a37c 325 #else /* LWIP_TCP */
grzemich 0:d7bd7384a37c 326 LWIP_UNUSED_ARG(conn);
grzemich 0:d7bd7384a37c 327 LWIP_UNUSED_ARG(new_conn);
grzemich 0:d7bd7384a37c 328 return ERR_ARG;
grzemich 0:d7bd7384a37c 329 #endif /* LWIP_TCP */
grzemich 0:d7bd7384a37c 330 }
grzemich 0:d7bd7384a37c 331
grzemich 0:d7bd7384a37c 332 /**
grzemich 0:d7bd7384a37c 333 * Receive data: actual implementation that doesn't care whether pbuf or netbuf
grzemich 0:d7bd7384a37c 334 * is received
grzemich 0:d7bd7384a37c 335 *
grzemich 0:d7bd7384a37c 336 * @param conn the netconn from which to receive data
grzemich 0:d7bd7384a37c 337 * @param new_buf pointer where a new pbuf/netbuf is stored when received data
grzemich 0:d7bd7384a37c 338 * @return ERR_OK if data has been received, an error code otherwise (timeout,
grzemich 0:d7bd7384a37c 339 * memory error or another error)
grzemich 0:d7bd7384a37c 340 */
grzemich 0:d7bd7384a37c 341 static err_t
grzemich 0:d7bd7384a37c 342 netconn_recv_data(struct netconn *conn, void **new_buf)
grzemich 0:d7bd7384a37c 343 {
grzemich 0:d7bd7384a37c 344 void *buf = NULL;
grzemich 0:d7bd7384a37c 345 u16_t len;
grzemich 0:d7bd7384a37c 346 err_t err;
grzemich 0:d7bd7384a37c 347 #if LWIP_TCP
grzemich 0:d7bd7384a37c 348 struct api_msg msg;
grzemich 0:d7bd7384a37c 349 #endif /* LWIP_TCP */
grzemich 0:d7bd7384a37c 350
grzemich 0:d7bd7384a37c 351 LWIP_ERROR("netconn_recv: invalid pointer", (new_buf != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 352 *new_buf = NULL;
grzemich 0:d7bd7384a37c 353 LWIP_ERROR("netconn_recv: invalid conn", (conn != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 354 LWIP_ERROR("netconn_accept: invalid recvmbox", sys_mbox_valid(&conn->recvmbox), return ERR_CONN;);
grzemich 0:d7bd7384a37c 355
grzemich 0:d7bd7384a37c 356 err = conn->last_err;
grzemich 0:d7bd7384a37c 357 if (ERR_IS_FATAL(err)) {
grzemich 0:d7bd7384a37c 358 /* don't recv on fatal errors: this might block the application task
grzemich 0:d7bd7384a37c 359 waiting on recvmbox forever! */
grzemich 0:d7bd7384a37c 360 /* @todo: this does not allow us to fetch data that has been put into recvmbox
grzemich 0:d7bd7384a37c 361 before the fatal error occurred - is that a problem? */
grzemich 0:d7bd7384a37c 362 return err;
grzemich 0:d7bd7384a37c 363 }
grzemich 0:d7bd7384a37c 364
grzemich 0:d7bd7384a37c 365 #if LWIP_SO_RCVTIMEO
grzemich 0:d7bd7384a37c 366 if (sys_arch_mbox_fetch(&conn->recvmbox, &buf, conn->recv_timeout) == SYS_ARCH_TIMEOUT) {
grzemich 0:d7bd7384a37c 367 NETCONN_SET_SAFE_ERR(conn, ERR_TIMEOUT);
grzemich 0:d7bd7384a37c 368 return ERR_TIMEOUT;
grzemich 0:d7bd7384a37c 369 }
grzemich 0:d7bd7384a37c 370 #else
grzemich 0:d7bd7384a37c 371 sys_arch_mbox_fetch(&conn->recvmbox, &buf, 0);
grzemich 0:d7bd7384a37c 372 #endif /* LWIP_SO_RCVTIMEO*/
grzemich 0:d7bd7384a37c 373
grzemich 0:d7bd7384a37c 374 #if LWIP_TCP
grzemich 0:d7bd7384a37c 375 if (conn->type == NETCONN_TCP) {
grzemich 0:d7bd7384a37c 376 if (!netconn_get_noautorecved(conn) || (buf == NULL)) {
grzemich 0:d7bd7384a37c 377 /* Let the stack know that we have taken the data. */
grzemich 0:d7bd7384a37c 378 /* TODO: Speedup: Don't block and wait for the answer here
grzemich 0:d7bd7384a37c 379 (to prevent multiple thread-switches). */
grzemich 0:d7bd7384a37c 380 msg.function = do_recv;
grzemich 0:d7bd7384a37c 381 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 382 if (buf != NULL) {
grzemich 0:d7bd7384a37c 383 msg.msg.msg.r.len = ((struct pbuf *)buf)->tot_len;
grzemich 0:d7bd7384a37c 384 } else {
grzemich 0:d7bd7384a37c 385 msg.msg.msg.r.len = 1;
grzemich 0:d7bd7384a37c 386 }
grzemich 0:d7bd7384a37c 387 /* don't care for the return value of do_recv */
grzemich 0:d7bd7384a37c 388 TCPIP_APIMSG(&msg);
grzemich 0:d7bd7384a37c 389 }
grzemich 0:d7bd7384a37c 390
grzemich 0:d7bd7384a37c 391 /* If we are closed, we indicate that we no longer wish to use the socket */
grzemich 0:d7bd7384a37c 392 if (buf == NULL) {
grzemich 0:d7bd7384a37c 393 API_EVENT(conn, NETCONN_EVT_RCVMINUS, 0);
grzemich 0:d7bd7384a37c 394 /* Avoid to lose any previous error code */
grzemich 0:d7bd7384a37c 395 NETCONN_SET_SAFE_ERR(conn, ERR_CLSD);
grzemich 0:d7bd7384a37c 396 return ERR_CLSD;
grzemich 0:d7bd7384a37c 397 }
grzemich 0:d7bd7384a37c 398 len = ((struct pbuf *)buf)->tot_len;
grzemich 0:d7bd7384a37c 399 }
grzemich 0:d7bd7384a37c 400 #endif /* LWIP_TCP */
grzemich 0:d7bd7384a37c 401 #if LWIP_TCP && (LWIP_UDP || LWIP_RAW)
grzemich 0:d7bd7384a37c 402 else
grzemich 0:d7bd7384a37c 403 #endif /* LWIP_TCP && (LWIP_UDP || LWIP_RAW) */
grzemich 0:d7bd7384a37c 404 #if (LWIP_UDP || LWIP_RAW)
grzemich 0:d7bd7384a37c 405 {
grzemich 0:d7bd7384a37c 406 LWIP_ASSERT("buf != NULL", buf != NULL);
grzemich 0:d7bd7384a37c 407 len = netbuf_len((struct netbuf *)buf);
grzemich 0:d7bd7384a37c 408 }
grzemich 0:d7bd7384a37c 409 #endif /* (LWIP_UDP || LWIP_RAW) */
grzemich 0:d7bd7384a37c 410
grzemich 0:d7bd7384a37c 411 #if LWIP_SO_RCVBUF
grzemich 0:d7bd7384a37c 412 SYS_ARCH_DEC(conn->recv_avail, len);
grzemich 0:d7bd7384a37c 413 #endif /* LWIP_SO_RCVBUF */
grzemich 0:d7bd7384a37c 414 /* Register event with callback */
grzemich 0:d7bd7384a37c 415 API_EVENT(conn, NETCONN_EVT_RCVMINUS, len);
grzemich 0:d7bd7384a37c 416
grzemich 0:d7bd7384a37c 417 LWIP_DEBUGF(API_LIB_DEBUG, ("netconn_recv_data: received %p, len=%"U16_F"\n", buf, len));
grzemich 0:d7bd7384a37c 418
grzemich 0:d7bd7384a37c 419 *new_buf = buf;
grzemich 0:d7bd7384a37c 420 /* don't set conn->last_err: it's only ERR_OK, anyway */
grzemich 0:d7bd7384a37c 421 return ERR_OK;
grzemich 0:d7bd7384a37c 422 }
grzemich 0:d7bd7384a37c 423
grzemich 0:d7bd7384a37c 424 /**
grzemich 0:d7bd7384a37c 425 * Receive data (in form of a pbuf) from a TCP netconn
grzemich 0:d7bd7384a37c 426 *
grzemich 0:d7bd7384a37c 427 * @param conn the netconn from which to receive data
grzemich 0:d7bd7384a37c 428 * @param new_buf pointer where a new pbuf is stored when received data
grzemich 0:d7bd7384a37c 429 * @return ERR_OK if data has been received, an error code otherwise (timeout,
grzemich 0:d7bd7384a37c 430 * memory error or another error)
grzemich 0:d7bd7384a37c 431 * ERR_ARG if conn is not a TCP netconn
grzemich 0:d7bd7384a37c 432 */
grzemich 0:d7bd7384a37c 433 err_t
grzemich 0:d7bd7384a37c 434 netconn_recv_tcp_pbuf(struct netconn *conn, struct pbuf **new_buf)
grzemich 0:d7bd7384a37c 435 {
grzemich 0:d7bd7384a37c 436 LWIP_ERROR("netconn_recv: invalid conn", (conn != NULL) &&
grzemich 0:d7bd7384a37c 437 netconn_type(conn) == NETCONN_TCP, return ERR_ARG;);
grzemich 0:d7bd7384a37c 438
grzemich 0:d7bd7384a37c 439 return netconn_recv_data(conn, (void **)new_buf);
grzemich 0:d7bd7384a37c 440 }
grzemich 0:d7bd7384a37c 441
grzemich 0:d7bd7384a37c 442 /**
grzemich 0:d7bd7384a37c 443 * Receive data (in form of a netbuf containing a packet buffer) from a netconn
grzemich 0:d7bd7384a37c 444 *
grzemich 0:d7bd7384a37c 445 * @param conn the netconn from which to receive data
grzemich 0:d7bd7384a37c 446 * @param new_buf pointer where a new netbuf is stored when received data
grzemich 0:d7bd7384a37c 447 * @return ERR_OK if data has been received, an error code otherwise (timeout,
grzemich 0:d7bd7384a37c 448 * memory error or another error)
grzemich 0:d7bd7384a37c 449 */
grzemich 0:d7bd7384a37c 450 err_t
grzemich 0:d7bd7384a37c 451 netconn_recv(struct netconn *conn, struct netbuf **new_buf)
grzemich 0:d7bd7384a37c 452 {
grzemich 0:d7bd7384a37c 453 #if LWIP_TCP
grzemich 0:d7bd7384a37c 454 struct netbuf *buf = NULL;
grzemich 0:d7bd7384a37c 455 err_t err;
grzemich 0:d7bd7384a37c 456 #endif /* LWIP_TCP */
grzemich 0:d7bd7384a37c 457
grzemich 0:d7bd7384a37c 458 LWIP_ERROR("netconn_recv: invalid pointer", (new_buf != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 459 *new_buf = NULL;
grzemich 0:d7bd7384a37c 460 LWIP_ERROR("netconn_recv: invalid conn", (conn != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 461 LWIP_ERROR("netconn_accept: invalid recvmbox", sys_mbox_valid(&conn->recvmbox), return ERR_CONN;);
grzemich 0:d7bd7384a37c 462
grzemich 0:d7bd7384a37c 463 #if LWIP_TCP
grzemich 0:d7bd7384a37c 464 if (conn->type == NETCONN_TCP) {
grzemich 0:d7bd7384a37c 465 struct pbuf *p = NULL;
grzemich 0:d7bd7384a37c 466 /* This is not a listening netconn, since recvmbox is set */
grzemich 0:d7bd7384a37c 467
grzemich 0:d7bd7384a37c 468 buf = (struct netbuf *)memp_malloc(MEMP_NETBUF);
grzemich 0:d7bd7384a37c 469 if (buf == NULL) {
grzemich 0:d7bd7384a37c 470 NETCONN_SET_SAFE_ERR(conn, ERR_MEM);
grzemich 0:d7bd7384a37c 471 return ERR_MEM;
grzemich 0:d7bd7384a37c 472 }
grzemich 0:d7bd7384a37c 473
grzemich 0:d7bd7384a37c 474 err = netconn_recv_data(conn, (void **)&p);
grzemich 0:d7bd7384a37c 475 if (err != ERR_OK) {
grzemich 0:d7bd7384a37c 476 memp_free(MEMP_NETBUF, buf);
grzemich 0:d7bd7384a37c 477 return err;
grzemich 0:d7bd7384a37c 478 }
grzemich 0:d7bd7384a37c 479 LWIP_ASSERT("p != NULL", p != NULL);
grzemich 0:d7bd7384a37c 480
grzemich 0:d7bd7384a37c 481 buf->p = p;
grzemich 0:d7bd7384a37c 482 buf->ptr = p;
grzemich 0:d7bd7384a37c 483 buf->port = 0;
grzemich 0:d7bd7384a37c 484 ip_addr_set_any(&buf->addr);
grzemich 0:d7bd7384a37c 485 *new_buf = buf;
grzemich 0:d7bd7384a37c 486 /* don't set conn->last_err: it's only ERR_OK, anyway */
grzemich 0:d7bd7384a37c 487 return ERR_OK;
grzemich 0:d7bd7384a37c 488 } else
grzemich 0:d7bd7384a37c 489 #endif /* LWIP_TCP */
grzemich 0:d7bd7384a37c 490 {
grzemich 0:d7bd7384a37c 491 #if (LWIP_UDP || LWIP_RAW)
grzemich 0:d7bd7384a37c 492 return netconn_recv_data(conn, (void **)new_buf);
grzemich 0:d7bd7384a37c 493 #endif /* (LWIP_UDP || LWIP_RAW) */
grzemich 0:d7bd7384a37c 494 }
grzemich 0:d7bd7384a37c 495 }
grzemich 0:d7bd7384a37c 496
grzemich 0:d7bd7384a37c 497 /**
grzemich 0:d7bd7384a37c 498 * TCP: update the receive window: by calling this, the application
grzemich 0:d7bd7384a37c 499 * tells the stack that it has processed data and is able to accept
grzemich 0:d7bd7384a37c 500 * new data.
grzemich 0:d7bd7384a37c 501 * ATTENTION: use with care, this is mainly used for sockets!
grzemich 0:d7bd7384a37c 502 * Can only be used when calling netconn_set_noautorecved(conn, 1) before.
grzemich 0:d7bd7384a37c 503 *
grzemich 0:d7bd7384a37c 504 * @param conn the netconn for which to update the receive window
grzemich 0:d7bd7384a37c 505 * @param length amount of data processed (ATTENTION: this must be accurate!)
grzemich 0:d7bd7384a37c 506 */
grzemich 0:d7bd7384a37c 507 void
grzemich 0:d7bd7384a37c 508 netconn_recved(struct netconn *conn, u32_t length)
grzemich 0:d7bd7384a37c 509 {
grzemich 0:d7bd7384a37c 510 #if LWIP_TCP
grzemich 0:d7bd7384a37c 511 if ((conn != NULL) && (conn->type == NETCONN_TCP) &&
grzemich 0:d7bd7384a37c 512 (netconn_get_noautorecved(conn))) {
grzemich 0:d7bd7384a37c 513 struct api_msg msg;
grzemich 0:d7bd7384a37c 514 /* Let the stack know that we have taken the data. */
grzemich 0:d7bd7384a37c 515 /* TODO: Speedup: Don't block and wait for the answer here
grzemich 0:d7bd7384a37c 516 (to prevent multiple thread-switches). */
grzemich 0:d7bd7384a37c 517 msg.function = do_recv;
grzemich 0:d7bd7384a37c 518 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 519 msg.msg.msg.r.len = length;
grzemich 0:d7bd7384a37c 520 /* don't care for the return value of do_recv */
grzemich 0:d7bd7384a37c 521 TCPIP_APIMSG(&msg);
grzemich 0:d7bd7384a37c 522 }
grzemich 0:d7bd7384a37c 523 #else /* LWIP_TCP */
grzemich 0:d7bd7384a37c 524 LWIP_UNUSED_ARG(conn);
grzemich 0:d7bd7384a37c 525 LWIP_UNUSED_ARG(length);
grzemich 0:d7bd7384a37c 526 #endif /* LWIP_TCP */
grzemich 0:d7bd7384a37c 527 }
grzemich 0:d7bd7384a37c 528
grzemich 0:d7bd7384a37c 529 /**
grzemich 0:d7bd7384a37c 530 * Send data (in form of a netbuf) to a specific remote IP address and port.
grzemich 0:d7bd7384a37c 531 * Only to be used for UDP and RAW netconns (not TCP).
grzemich 0:d7bd7384a37c 532 *
grzemich 0:d7bd7384a37c 533 * @param conn the netconn over which to send data
grzemich 0:d7bd7384a37c 534 * @param buf a netbuf containing the data to send
grzemich 0:d7bd7384a37c 535 * @param addr the remote IP address to which to send the data
grzemich 0:d7bd7384a37c 536 * @param port the remote port to which to send the data
grzemich 0:d7bd7384a37c 537 * @return ERR_OK if data was sent, any other err_t on error
grzemich 0:d7bd7384a37c 538 */
grzemich 0:d7bd7384a37c 539 err_t
grzemich 0:d7bd7384a37c 540 netconn_sendto(struct netconn *conn, struct netbuf *buf, ip_addr_t *addr, u16_t port)
grzemich 0:d7bd7384a37c 541 {
grzemich 0:d7bd7384a37c 542 if (buf != NULL) {
grzemich 0:d7bd7384a37c 543 ip_addr_set(&buf->addr, addr);
grzemich 0:d7bd7384a37c 544 buf->port = port;
grzemich 0:d7bd7384a37c 545 return netconn_send(conn, buf);
grzemich 0:d7bd7384a37c 546 }
grzemich 0:d7bd7384a37c 547 return ERR_VAL;
grzemich 0:d7bd7384a37c 548 }
grzemich 0:d7bd7384a37c 549
grzemich 0:d7bd7384a37c 550 /**
grzemich 0:d7bd7384a37c 551 * Send data over a UDP or RAW netconn (that is already connected).
grzemich 0:d7bd7384a37c 552 *
grzemich 0:d7bd7384a37c 553 * @param conn the UDP or RAW netconn over which to send data
grzemich 0:d7bd7384a37c 554 * @param buf a netbuf containing the data to send
grzemich 0:d7bd7384a37c 555 * @return ERR_OK if data was sent, any other err_t on error
grzemich 0:d7bd7384a37c 556 */
grzemich 0:d7bd7384a37c 557 err_t
grzemich 0:d7bd7384a37c 558 netconn_send(struct netconn *conn, struct netbuf *buf)
grzemich 0:d7bd7384a37c 559 {
grzemich 0:d7bd7384a37c 560 struct api_msg msg;
grzemich 0:d7bd7384a37c 561 err_t err;
grzemich 0:d7bd7384a37c 562
grzemich 0:d7bd7384a37c 563 LWIP_ERROR("netconn_send: invalid conn", (conn != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 564
grzemich 0:d7bd7384a37c 565 LWIP_DEBUGF(API_LIB_DEBUG, ("netconn_send: sending %"U16_F" bytes\n", buf->p->tot_len));
grzemich 0:d7bd7384a37c 566 msg.function = do_send;
grzemich 0:d7bd7384a37c 567 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 568 msg.msg.msg.b = buf;
grzemich 0:d7bd7384a37c 569 err = TCPIP_APIMSG(&msg);
grzemich 0:d7bd7384a37c 570
grzemich 0:d7bd7384a37c 571 NETCONN_SET_SAFE_ERR(conn, err);
grzemich 0:d7bd7384a37c 572 return err;
grzemich 0:d7bd7384a37c 573 }
grzemich 0:d7bd7384a37c 574
grzemich 0:d7bd7384a37c 575 /**
grzemich 0:d7bd7384a37c 576 * Send data over a TCP netconn.
grzemich 0:d7bd7384a37c 577 *
grzemich 0:d7bd7384a37c 578 * @param conn the TCP netconn over which to send data
grzemich 0:d7bd7384a37c 579 * @param dataptr pointer to the application buffer that contains the data to send
grzemich 0:d7bd7384a37c 580 * @param size size of the application data to send
grzemich 0:d7bd7384a37c 581 * @param apiflags combination of following flags :
grzemich 0:d7bd7384a37c 582 * - NETCONN_COPY: data will be copied into memory belonging to the stack
grzemich 0:d7bd7384a37c 583 * - NETCONN_MORE: for TCP connection, PSH flag will be set on last segment sent
grzemich 0:d7bd7384a37c 584 * - NETCONN_DONTBLOCK: only write the data if all dat can be written at once
grzemich 0:d7bd7384a37c 585 * @return ERR_OK if data was sent, any other err_t on error
grzemich 0:d7bd7384a37c 586 */
grzemich 0:d7bd7384a37c 587 err_t
grzemich 0:d7bd7384a37c 588 netconn_write(struct netconn *conn, const void *dataptr, size_t size, u8_t apiflags)
grzemich 0:d7bd7384a37c 589 {
grzemich 0:d7bd7384a37c 590 struct api_msg msg;
grzemich 0:d7bd7384a37c 591 err_t err;
grzemich 0:d7bd7384a37c 592
grzemich 0:d7bd7384a37c 593 LWIP_ERROR("netconn_write: invalid conn", (conn != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 594 LWIP_ERROR("netconn_write: invalid conn->type", (conn->type == NETCONN_TCP), return ERR_VAL;);
grzemich 0:d7bd7384a37c 595 if (size == 0) {
grzemich 0:d7bd7384a37c 596 return ERR_OK;
grzemich 0:d7bd7384a37c 597 }
grzemich 0:d7bd7384a37c 598
grzemich 0:d7bd7384a37c 599 /* @todo: for non-blocking write, check if 'size' would ever fit into
grzemich 0:d7bd7384a37c 600 snd_queue or snd_buf */
grzemich 0:d7bd7384a37c 601 msg.function = do_write;
grzemich 0:d7bd7384a37c 602 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 603 msg.msg.msg.w.dataptr = dataptr;
grzemich 0:d7bd7384a37c 604 msg.msg.msg.w.apiflags = apiflags;
grzemich 0:d7bd7384a37c 605 msg.msg.msg.w.len = size;
grzemich 0:d7bd7384a37c 606 /* For locking the core: this _can_ be delayed on low memory/low send buffer,
grzemich 0:d7bd7384a37c 607 but if it is, this is done inside api_msg.c:do_write(), so we can use the
grzemich 0:d7bd7384a37c 608 non-blocking version here. */
grzemich 0:d7bd7384a37c 609 err = TCPIP_APIMSG(&msg);
grzemich 0:d7bd7384a37c 610
grzemich 0:d7bd7384a37c 611 NETCONN_SET_SAFE_ERR(conn, err);
grzemich 0:d7bd7384a37c 612 return err;
grzemich 0:d7bd7384a37c 613 }
grzemich 0:d7bd7384a37c 614
grzemich 0:d7bd7384a37c 615 /**
grzemich 0:d7bd7384a37c 616 * Close ot shutdown a TCP netconn (doesn't delete it).
grzemich 0:d7bd7384a37c 617 *
grzemich 0:d7bd7384a37c 618 * @param conn the TCP netconn to close or shutdown
grzemich 0:d7bd7384a37c 619 * @param how fully close or only shutdown one side?
grzemich 0:d7bd7384a37c 620 * @return ERR_OK if the netconn was closed, any other err_t on error
grzemich 0:d7bd7384a37c 621 */
grzemich 0:d7bd7384a37c 622 static err_t
grzemich 0:d7bd7384a37c 623 netconn_close_shutdown(struct netconn *conn, u8_t how)
grzemich 0:d7bd7384a37c 624 {
grzemich 0:d7bd7384a37c 625 struct api_msg msg;
grzemich 0:d7bd7384a37c 626 err_t err;
grzemich 0:d7bd7384a37c 627
grzemich 0:d7bd7384a37c 628 LWIP_ERROR("netconn_close: invalid conn", (conn != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 629
grzemich 0:d7bd7384a37c 630 msg.function = do_close;
grzemich 0:d7bd7384a37c 631 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 632 /* shutting down both ends is the same as closing */
grzemich 0:d7bd7384a37c 633 msg.msg.msg.sd.shut = how;
grzemich 0:d7bd7384a37c 634 /* because of the LWIP_TCPIP_CORE_LOCKING implementation of do_close,
grzemich 0:d7bd7384a37c 635 don't use TCPIP_APIMSG here */
grzemich 0:d7bd7384a37c 636 err = tcpip_apimsg(&msg);
grzemich 0:d7bd7384a37c 637
grzemich 0:d7bd7384a37c 638 NETCONN_SET_SAFE_ERR(conn, err);
grzemich 0:d7bd7384a37c 639 return err;
grzemich 0:d7bd7384a37c 640 }
grzemich 0:d7bd7384a37c 641
grzemich 0:d7bd7384a37c 642 /**
grzemich 0:d7bd7384a37c 643 * Close a TCP netconn (doesn't delete it).
grzemich 0:d7bd7384a37c 644 *
grzemich 0:d7bd7384a37c 645 * @param conn the TCP netconn to close
grzemich 0:d7bd7384a37c 646 * @return ERR_OK if the netconn was closed, any other err_t on error
grzemich 0:d7bd7384a37c 647 */
grzemich 0:d7bd7384a37c 648 err_t
grzemich 0:d7bd7384a37c 649 netconn_close(struct netconn *conn)
grzemich 0:d7bd7384a37c 650 {
grzemich 0:d7bd7384a37c 651 /* shutting down both ends is the same as closing */
grzemich 0:d7bd7384a37c 652 return netconn_close_shutdown(conn, NETCONN_SHUT_RDWR);
grzemich 0:d7bd7384a37c 653 }
grzemich 0:d7bd7384a37c 654
grzemich 0:d7bd7384a37c 655 /**
grzemich 0:d7bd7384a37c 656 * Shut down one or both sides of a TCP netconn (doesn't delete it).
grzemich 0:d7bd7384a37c 657 *
grzemich 0:d7bd7384a37c 658 * @param conn the TCP netconn to shut down
grzemich 0:d7bd7384a37c 659 * @return ERR_OK if the netconn was closed, any other err_t on error
grzemich 0:d7bd7384a37c 660 */
grzemich 0:d7bd7384a37c 661 err_t
grzemich 0:d7bd7384a37c 662 netconn_shutdown(struct netconn *conn, u8_t shut_rx, u8_t shut_tx)
grzemich 0:d7bd7384a37c 663 {
grzemich 0:d7bd7384a37c 664 return netconn_close_shutdown(conn, (shut_rx ? NETCONN_SHUT_RD : 0) | (shut_tx ? NETCONN_SHUT_WR : 0));
grzemich 0:d7bd7384a37c 665 }
grzemich 0:d7bd7384a37c 666
grzemich 0:d7bd7384a37c 667 #if LWIP_IGMP
grzemich 0:d7bd7384a37c 668 /**
grzemich 0:d7bd7384a37c 669 * Join multicast groups for UDP netconns.
grzemich 0:d7bd7384a37c 670 *
grzemich 0:d7bd7384a37c 671 * @param conn the UDP netconn for which to change multicast addresses
grzemich 0:d7bd7384a37c 672 * @param multiaddr IP address of the multicast group to join or leave
grzemich 0:d7bd7384a37c 673 * @param netif_addr the IP address of the network interface on which to send
grzemich 0:d7bd7384a37c 674 * the igmp message
grzemich 0:d7bd7384a37c 675 * @param join_or_leave flag whether to send a join- or leave-message
grzemich 0:d7bd7384a37c 676 * @return ERR_OK if the action was taken, any err_t on error
grzemich 0:d7bd7384a37c 677 */
grzemich 0:d7bd7384a37c 678 err_t
grzemich 0:d7bd7384a37c 679 netconn_join_leave_group(struct netconn *conn,
grzemich 0:d7bd7384a37c 680 ip_addr_t *multiaddr,
grzemich 0:d7bd7384a37c 681 ip_addr_t *netif_addr,
grzemich 0:d7bd7384a37c 682 enum netconn_igmp join_or_leave)
grzemich 0:d7bd7384a37c 683 {
grzemich 0:d7bd7384a37c 684 struct api_msg msg;
grzemich 0:d7bd7384a37c 685 err_t err;
grzemich 0:d7bd7384a37c 686
grzemich 0:d7bd7384a37c 687 LWIP_ERROR("netconn_join_leave_group: invalid conn", (conn != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 688
grzemich 0:d7bd7384a37c 689 msg.function = do_join_leave_group;
grzemich 0:d7bd7384a37c 690 msg.msg.conn = conn;
grzemich 0:d7bd7384a37c 691 msg.msg.msg.jl.multiaddr = multiaddr;
grzemich 0:d7bd7384a37c 692 msg.msg.msg.jl.netif_addr = netif_addr;
grzemich 0:d7bd7384a37c 693 msg.msg.msg.jl.join_or_leave = join_or_leave;
grzemich 0:d7bd7384a37c 694 err = TCPIP_APIMSG(&msg);
grzemich 0:d7bd7384a37c 695
grzemich 0:d7bd7384a37c 696 NETCONN_SET_SAFE_ERR(conn, err);
grzemich 0:d7bd7384a37c 697 return err;
grzemich 0:d7bd7384a37c 698 }
grzemich 0:d7bd7384a37c 699 #endif /* LWIP_IGMP */
grzemich 0:d7bd7384a37c 700
grzemich 0:d7bd7384a37c 701 #if LWIP_DNS
grzemich 0:d7bd7384a37c 702 /**
grzemich 0:d7bd7384a37c 703 * Execute a DNS query, only one IP address is returned
grzemich 0:d7bd7384a37c 704 *
grzemich 0:d7bd7384a37c 705 * @param name a string representation of the DNS host name to query
grzemich 0:d7bd7384a37c 706 * @param addr a preallocated ip_addr_t where to store the resolved IP address
grzemich 0:d7bd7384a37c 707 * @return ERR_OK: resolving succeeded
grzemich 0:d7bd7384a37c 708 * ERR_MEM: memory error, try again later
grzemich 0:d7bd7384a37c 709 * ERR_ARG: dns client not initialized or invalid hostname
grzemich 0:d7bd7384a37c 710 * ERR_VAL: dns server response was invalid
grzemich 0:d7bd7384a37c 711 */
grzemich 0:d7bd7384a37c 712 err_t
grzemich 0:d7bd7384a37c 713 netconn_gethostbyname(const char *name, ip_addr_t *addr)
grzemich 0:d7bd7384a37c 714 {
grzemich 0:d7bd7384a37c 715 struct dns_api_msg msg;
grzemich 0:d7bd7384a37c 716 err_t err;
grzemich 0:d7bd7384a37c 717 sys_sem_t sem;
grzemich 0:d7bd7384a37c 718
grzemich 0:d7bd7384a37c 719 LWIP_ERROR("netconn_gethostbyname: invalid name", (name != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 720 LWIP_ERROR("netconn_gethostbyname: invalid addr", (addr != NULL), return ERR_ARG;);
grzemich 0:d7bd7384a37c 721
grzemich 0:d7bd7384a37c 722 err = sys_sem_new(&sem, 0);
grzemich 0:d7bd7384a37c 723 if (err != ERR_OK) {
grzemich 0:d7bd7384a37c 724 return err;
grzemich 0:d7bd7384a37c 725 }
grzemich 0:d7bd7384a37c 726
grzemich 0:d7bd7384a37c 727 msg.name = name;
grzemich 0:d7bd7384a37c 728 msg.addr = addr;
grzemich 0:d7bd7384a37c 729 msg.err = &err;
grzemich 0:d7bd7384a37c 730 msg.sem = &sem;
grzemich 0:d7bd7384a37c 731
grzemich 0:d7bd7384a37c 732 tcpip_callback(do_gethostbyname, &msg);
grzemich 0:d7bd7384a37c 733 sys_sem_wait(&sem);
grzemich 0:d7bd7384a37c 734 sys_sem_free(&sem);
grzemich 0:d7bd7384a37c 735
grzemich 0:d7bd7384a37c 736 return err;
grzemich 0:d7bd7384a37c 737 }
grzemich 0:d7bd7384a37c 738 #endif /* LWIP_DNS*/
grzemich 0:d7bd7384a37c 739
grzemich 0:d7bd7384a37c 740 #endif /* LWIP_NETCONN */