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Fork of lwip by mbed official

api/api_lib.c@0:51ac1d130fd4, 2012-06-22 (annotated)

Committer:
mbed_official
Date:
Fri Jun 22 09:25:39 2012 +0000
Revision:
0:51ac1d130fd4
Initial import from lwip-1.4.0: http://download.savannah.gnu.org/releases/lwip/lwip-1.4.0.zip

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:51ac1d130fd4 1 /**
mbed_official 0:51ac1d130fd4 2 * @file
mbed_official 0:51ac1d130fd4 3 * Sequential API External module
mbed_official 0:51ac1d130fd4 4 *
mbed_official 0:51ac1d130fd4 5 */
mbed_official 0:51ac1d130fd4 6
mbed_official 0:51ac1d130fd4 7 /*
mbed_official 0:51ac1d130fd4 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
mbed_official 0:51ac1d130fd4 9 * All rights reserved.
mbed_official 0:51ac1d130fd4 10 *
mbed_official 0:51ac1d130fd4 11 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 0:51ac1d130fd4 12 * are permitted provided that the following conditions are met:
mbed_official 0:51ac1d130fd4 13 *
mbed_official 0:51ac1d130fd4 14 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 0:51ac1d130fd4 15 * this list of conditions and the following disclaimer.
mbed_official 0:51ac1d130fd4 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 0:51ac1d130fd4 17 * this list of conditions and the following disclaimer in the documentation
mbed_official 0:51ac1d130fd4 18 * and/or other materials provided with the distribution.
mbed_official 0:51ac1d130fd4 19 * 3. The name of the author may not be used to endorse or promote products
mbed_official 0:51ac1d130fd4 20 * derived from this software without specific prior written permission.
mbed_official 0:51ac1d130fd4 21 *
mbed_official 0:51ac1d130fd4 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
mbed_official 0:51ac1d130fd4 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
mbed_official 0:51ac1d130fd4 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
mbed_official 0:51ac1d130fd4 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
mbed_official 0:51ac1d130fd4 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
mbed_official 0:51ac1d130fd4 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mbed_official 0:51ac1d130fd4 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mbed_official 0:51ac1d130fd4 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
mbed_official 0:51ac1d130fd4 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
mbed_official 0:51ac1d130fd4 31 * OF SUCH DAMAGE.
mbed_official 0:51ac1d130fd4 32 *
mbed_official 0:51ac1d130fd4 33 * This file is part of the lwIP TCP/IP stack.
mbed_official 0:51ac1d130fd4 34 *
mbed_official 0:51ac1d130fd4 35 * Author: Adam Dunkels <adam@sics.se>
mbed_official 0:51ac1d130fd4 36 *
mbed_official 0:51ac1d130fd4 37 */
mbed_official 0:51ac1d130fd4 38
mbed_official 0:51ac1d130fd4 39 /* This is the part of the API that is linked with
mbed_official 0:51ac1d130fd4 40 the application */
mbed_official 0:51ac1d130fd4 41
mbed_official 0:51ac1d130fd4 42 #include "lwip/opt.h"
mbed_official 0:51ac1d130fd4 43
mbed_official 0:51ac1d130fd4 44 #if LWIP_NETCONN /* don't build if not configured for use in lwipopts.h */
mbed_official 0:51ac1d130fd4 45
mbed_official 0:51ac1d130fd4 46 #include "lwip/api.h"
mbed_official 0:51ac1d130fd4 47 #include "lwip/tcpip.h"
mbed_official 0:51ac1d130fd4 48 #include "lwip/memp.h"
mbed_official 0:51ac1d130fd4 49
mbed_official 0:51ac1d130fd4 50 #include "lwip/ip.h"
mbed_official 0:51ac1d130fd4 51 #include "lwip/raw.h"
mbed_official 0:51ac1d130fd4 52 #include "lwip/udp.h"
mbed_official 0:51ac1d130fd4 53 #include "lwip/tcp.h"
mbed_official 0:51ac1d130fd4 54
mbed_official 0:51ac1d130fd4 55 #include <string.h>
mbed_official 0:51ac1d130fd4 56
mbed_official 0:51ac1d130fd4 57 /**
mbed_official 0:51ac1d130fd4 58 * Create a new netconn (of a specific type) that has a callback function.
mbed_official 0:51ac1d130fd4 59 * The corresponding pcb is also created.
mbed_official 0:51ac1d130fd4 60 *
mbed_official 0:51ac1d130fd4 61 * @param t the type of 'connection' to create (@see enum netconn_type)
mbed_official 0:51ac1d130fd4 62 * @param proto the IP protocol for RAW IP pcbs
mbed_official 0:51ac1d130fd4 63 * @param callback a function to call on status changes (RX available, TX'ed)
mbed_official 0:51ac1d130fd4 64 * @return a newly allocated struct netconn or
mbed_official 0:51ac1d130fd4 65 * NULL on memory error
mbed_official 0:51ac1d130fd4 66 */
mbed_official 0:51ac1d130fd4 67 struct netconn*
mbed_official 0:51ac1d130fd4 68 netconn_new_with_proto_and_callback(enum netconn_type t, u8_t proto, netconn_callback callback)
mbed_official 0:51ac1d130fd4 69 {
mbed_official 0:51ac1d130fd4 70 struct netconn *conn;
mbed_official 0:51ac1d130fd4 71 struct api_msg msg;
mbed_official 0:51ac1d130fd4 72
mbed_official 0:51ac1d130fd4 73 conn = netconn_alloc(t, callback);
mbed_official 0:51ac1d130fd4 74 if (conn != NULL) {
mbed_official 0:51ac1d130fd4 75 msg.function = do_newconn;
mbed_official 0:51ac1d130fd4 76 msg.msg.msg.n.proto = proto;
mbed_official 0:51ac1d130fd4 77 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 78 if (TCPIP_APIMSG(&msg) != ERR_OK) {
mbed_official 0:51ac1d130fd4 79 LWIP_ASSERT("freeing conn without freeing pcb", conn->pcb.tcp == NULL);
mbed_official 0:51ac1d130fd4 80 LWIP_ASSERT("conn has no op_completed", sys_sem_valid(&conn->op_completed));
mbed_official 0:51ac1d130fd4 81 LWIP_ASSERT("conn has no recvmbox", sys_mbox_valid(&conn->recvmbox));
mbed_official 0:51ac1d130fd4 82 #if LWIP_TCP
mbed_official 0:51ac1d130fd4 83 LWIP_ASSERT("conn->acceptmbox shouldn't exist", !sys_mbox_valid(&conn->acceptmbox));
mbed_official 0:51ac1d130fd4 84 #endif /* LWIP_TCP */
mbed_official 0:51ac1d130fd4 85 sys_sem_free(&conn->op_completed);
mbed_official 0:51ac1d130fd4 86 sys_mbox_free(&conn->recvmbox);
mbed_official 0:51ac1d130fd4 87 memp_free(MEMP_NETCONN, conn);
mbed_official 0:51ac1d130fd4 88 return NULL;
mbed_official 0:51ac1d130fd4 89 }
mbed_official 0:51ac1d130fd4 90 }
mbed_official 0:51ac1d130fd4 91 return conn;
mbed_official 0:51ac1d130fd4 92 }
mbed_official 0:51ac1d130fd4 93
mbed_official 0:51ac1d130fd4 94 /**
mbed_official 0:51ac1d130fd4 95 * Close a netconn 'connection' and free its resources.
mbed_official 0:51ac1d130fd4 96 * UDP and RAW connection are completely closed, TCP pcbs might still be in a waitstate
mbed_official 0:51ac1d130fd4 97 * after this returns.
mbed_official 0:51ac1d130fd4 98 *
mbed_official 0:51ac1d130fd4 99 * @param conn the netconn to delete
mbed_official 0:51ac1d130fd4 100 * @return ERR_OK if the connection was deleted
mbed_official 0:51ac1d130fd4 101 */
mbed_official 0:51ac1d130fd4 102 err_t
mbed_official 0:51ac1d130fd4 103 netconn_delete(struct netconn *conn)
mbed_official 0:51ac1d130fd4 104 {
mbed_official 0:51ac1d130fd4 105 struct api_msg msg;
mbed_official 0:51ac1d130fd4 106
mbed_official 0:51ac1d130fd4 107 /* No ASSERT here because possible to get a (conn == NULL) if we got an accept error */
mbed_official 0:51ac1d130fd4 108 if (conn == NULL) {
mbed_official 0:51ac1d130fd4 109 return ERR_OK;
mbed_official 0:51ac1d130fd4 110 }
mbed_official 0:51ac1d130fd4 111
mbed_official 0:51ac1d130fd4 112 msg.function = do_delconn;
mbed_official 0:51ac1d130fd4 113 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 114 tcpip_apimsg(&msg);
mbed_official 0:51ac1d130fd4 115
mbed_official 0:51ac1d130fd4 116 netconn_free(conn);
mbed_official 0:51ac1d130fd4 117
mbed_official 0:51ac1d130fd4 118 /* don't care for return value of do_delconn since it only calls void functions */
mbed_official 0:51ac1d130fd4 119
mbed_official 0:51ac1d130fd4 120 return ERR_OK;
mbed_official 0:51ac1d130fd4 121 }
mbed_official 0:51ac1d130fd4 122
mbed_official 0:51ac1d130fd4 123 /**
mbed_official 0:51ac1d130fd4 124 * Get the local or remote IP address and port of a netconn.
mbed_official 0:51ac1d130fd4 125 * For RAW netconns, this returns the protocol instead of a port!
mbed_official 0:51ac1d130fd4 126 *
mbed_official 0:51ac1d130fd4 127 * @param conn the netconn to query
mbed_official 0:51ac1d130fd4 128 * @param addr a pointer to which to save the IP address
mbed_official 0:51ac1d130fd4 129 * @param port a pointer to which to save the port (or protocol for RAW)
mbed_official 0:51ac1d130fd4 130 * @param local 1 to get the local IP address, 0 to get the remote one
mbed_official 0:51ac1d130fd4 131 * @return ERR_CONN for invalid connections
mbed_official 0:51ac1d130fd4 132 * ERR_OK if the information was retrieved
mbed_official 0:51ac1d130fd4 133 */
mbed_official 0:51ac1d130fd4 134 err_t
mbed_official 0:51ac1d130fd4 135 netconn_getaddr(struct netconn *conn, ip_addr_t *addr, u16_t *port, u8_t local)
mbed_official 0:51ac1d130fd4 136 {
mbed_official 0:51ac1d130fd4 137 struct api_msg msg;
mbed_official 0:51ac1d130fd4 138 err_t err;
mbed_official 0:51ac1d130fd4 139
mbed_official 0:51ac1d130fd4 140 LWIP_ERROR("netconn_getaddr: invalid conn", (conn != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 141 LWIP_ERROR("netconn_getaddr: invalid addr", (addr != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 142 LWIP_ERROR("netconn_getaddr: invalid port", (port != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 143
mbed_official 0:51ac1d130fd4 144 msg.function = do_getaddr;
mbed_official 0:51ac1d130fd4 145 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 146 msg.msg.msg.ad.ipaddr = addr;
mbed_official 0:51ac1d130fd4 147 msg.msg.msg.ad.port = port;
mbed_official 0:51ac1d130fd4 148 msg.msg.msg.ad.local = local;
mbed_official 0:51ac1d130fd4 149 err = TCPIP_APIMSG(&msg);
mbed_official 0:51ac1d130fd4 150
mbed_official 0:51ac1d130fd4 151 NETCONN_SET_SAFE_ERR(conn, err);
mbed_official 0:51ac1d130fd4 152 return err;
mbed_official 0:51ac1d130fd4 153 }
mbed_official 0:51ac1d130fd4 154
mbed_official 0:51ac1d130fd4 155 /**
mbed_official 0:51ac1d130fd4 156 * Bind a netconn to a specific local IP address and port.
mbed_official 0:51ac1d130fd4 157 * Binding one netconn twice might not always be checked correctly!
mbed_official 0:51ac1d130fd4 158 *
mbed_official 0:51ac1d130fd4 159 * @param conn the netconn to bind
mbed_official 0:51ac1d130fd4 160 * @param addr the local IP address to bind the netconn to (use IP_ADDR_ANY
mbed_official 0:51ac1d130fd4 161 * to bind to all addresses)
mbed_official 0:51ac1d130fd4 162 * @param port the local port to bind the netconn to (not used for RAW)
mbed_official 0:51ac1d130fd4 163 * @return ERR_OK if bound, any other err_t on failure
mbed_official 0:51ac1d130fd4 164 */
mbed_official 0:51ac1d130fd4 165 err_t
mbed_official 0:51ac1d130fd4 166 netconn_bind(struct netconn *conn, ip_addr_t *addr, u16_t port)
mbed_official 0:51ac1d130fd4 167 {
mbed_official 0:51ac1d130fd4 168 struct api_msg msg;
mbed_official 0:51ac1d130fd4 169 err_t err;
mbed_official 0:51ac1d130fd4 170
mbed_official 0:51ac1d130fd4 171 LWIP_ERROR("netconn_bind: invalid conn", (conn != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 172
mbed_official 0:51ac1d130fd4 173 msg.function = do_bind;
mbed_official 0:51ac1d130fd4 174 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 175 msg.msg.msg.bc.ipaddr = addr;
mbed_official 0:51ac1d130fd4 176 msg.msg.msg.bc.port = port;
mbed_official 0:51ac1d130fd4 177 err = TCPIP_APIMSG(&msg);
mbed_official 0:51ac1d130fd4 178
mbed_official 0:51ac1d130fd4 179 NETCONN_SET_SAFE_ERR(conn, err);
mbed_official 0:51ac1d130fd4 180 return err;
mbed_official 0:51ac1d130fd4 181 }
mbed_official 0:51ac1d130fd4 182
mbed_official 0:51ac1d130fd4 183 /**
mbed_official 0:51ac1d130fd4 184 * Connect a netconn to a specific remote IP address and port.
mbed_official 0:51ac1d130fd4 185 *
mbed_official 0:51ac1d130fd4 186 * @param conn the netconn to connect
mbed_official 0:51ac1d130fd4 187 * @param addr the remote IP address to connect to
mbed_official 0:51ac1d130fd4 188 * @param port the remote port to connect to (no used for RAW)
mbed_official 0:51ac1d130fd4 189 * @return ERR_OK if connected, return value of tcp_/udp_/raw_connect otherwise
mbed_official 0:51ac1d130fd4 190 */
mbed_official 0:51ac1d130fd4 191 err_t
mbed_official 0:51ac1d130fd4 192 netconn_connect(struct netconn *conn, ip_addr_t *addr, u16_t port)
mbed_official 0:51ac1d130fd4 193 {
mbed_official 0:51ac1d130fd4 194 struct api_msg msg;
mbed_official 0:51ac1d130fd4 195 err_t err;
mbed_official 0:51ac1d130fd4 196
mbed_official 0:51ac1d130fd4 197 LWIP_ERROR("netconn_connect: invalid conn", (conn != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 198
mbed_official 0:51ac1d130fd4 199 msg.function = do_connect;
mbed_official 0:51ac1d130fd4 200 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 201 msg.msg.msg.bc.ipaddr = addr;
mbed_official 0:51ac1d130fd4 202 msg.msg.msg.bc.port = port;
mbed_official 0:51ac1d130fd4 203 /* This is the only function which need to not block tcpip_thread */
mbed_official 0:51ac1d130fd4 204 err = tcpip_apimsg(&msg);
mbed_official 0:51ac1d130fd4 205
mbed_official 0:51ac1d130fd4 206 NETCONN_SET_SAFE_ERR(conn, err);
mbed_official 0:51ac1d130fd4 207 return err;
mbed_official 0:51ac1d130fd4 208 }
mbed_official 0:51ac1d130fd4 209
mbed_official 0:51ac1d130fd4 210 /**
mbed_official 0:51ac1d130fd4 211 * Disconnect a netconn from its current peer (only valid for UDP netconns).
mbed_official 0:51ac1d130fd4 212 *
mbed_official 0:51ac1d130fd4 213 * @param conn the netconn to disconnect
mbed_official 0:51ac1d130fd4 214 * @return TODO: return value is not set here...
mbed_official 0:51ac1d130fd4 215 */
mbed_official 0:51ac1d130fd4 216 err_t
mbed_official 0:51ac1d130fd4 217 netconn_disconnect(struct netconn *conn)
mbed_official 0:51ac1d130fd4 218 {
mbed_official 0:51ac1d130fd4 219 struct api_msg msg;
mbed_official 0:51ac1d130fd4 220 err_t err;
mbed_official 0:51ac1d130fd4 221
mbed_official 0:51ac1d130fd4 222 LWIP_ERROR("netconn_disconnect: invalid conn", (conn != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 223
mbed_official 0:51ac1d130fd4 224 msg.function = do_disconnect;
mbed_official 0:51ac1d130fd4 225 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 226 err = TCPIP_APIMSG(&msg);
mbed_official 0:51ac1d130fd4 227
mbed_official 0:51ac1d130fd4 228 NETCONN_SET_SAFE_ERR(conn, err);
mbed_official 0:51ac1d130fd4 229 return err;
mbed_official 0:51ac1d130fd4 230 }
mbed_official 0:51ac1d130fd4 231
mbed_official 0:51ac1d130fd4 232 /**
mbed_official 0:51ac1d130fd4 233 * Set a TCP netconn into listen mode
mbed_official 0:51ac1d130fd4 234 *
mbed_official 0:51ac1d130fd4 235 * @param conn the tcp netconn to set to listen mode
mbed_official 0:51ac1d130fd4 236 * @param backlog the listen backlog, only used if TCP_LISTEN_BACKLOG==1
mbed_official 0:51ac1d130fd4 237 * @return ERR_OK if the netconn was set to listen (UDP and RAW netconns
mbed_official 0:51ac1d130fd4 238 * don't return any error (yet?))
mbed_official 0:51ac1d130fd4 239 */
mbed_official 0:51ac1d130fd4 240 err_t
mbed_official 0:51ac1d130fd4 241 netconn_listen_with_backlog(struct netconn *conn, u8_t backlog)
mbed_official 0:51ac1d130fd4 242 {
mbed_official 0:51ac1d130fd4 243 #if LWIP_TCP
mbed_official 0:51ac1d130fd4 244 struct api_msg msg;
mbed_official 0:51ac1d130fd4 245 err_t err;
mbed_official 0:51ac1d130fd4 246
mbed_official 0:51ac1d130fd4 247 /* This does no harm. If TCP_LISTEN_BACKLOG is off, backlog is unused. */
mbed_official 0:51ac1d130fd4 248 LWIP_UNUSED_ARG(backlog);
mbed_official 0:51ac1d130fd4 249
mbed_official 0:51ac1d130fd4 250 LWIP_ERROR("netconn_listen: invalid conn", (conn != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 251
mbed_official 0:51ac1d130fd4 252 msg.function = do_listen;
mbed_official 0:51ac1d130fd4 253 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 254 #if TCP_LISTEN_BACKLOG
mbed_official 0:51ac1d130fd4 255 msg.msg.msg.lb.backlog = backlog;
mbed_official 0:51ac1d130fd4 256 #endif /* TCP_LISTEN_BACKLOG */
mbed_official 0:51ac1d130fd4 257 err = TCPIP_APIMSG(&msg);
mbed_official 0:51ac1d130fd4 258
mbed_official 0:51ac1d130fd4 259 NETCONN_SET_SAFE_ERR(conn, err);
mbed_official 0:51ac1d130fd4 260 return err;
mbed_official 0:51ac1d130fd4 261 #else /* LWIP_TCP */
mbed_official 0:51ac1d130fd4 262 LWIP_UNUSED_ARG(conn);
mbed_official 0:51ac1d130fd4 263 LWIP_UNUSED_ARG(backlog);
mbed_official 0:51ac1d130fd4 264 return ERR_ARG;
mbed_official 0:51ac1d130fd4 265 #endif /* LWIP_TCP */
mbed_official 0:51ac1d130fd4 266 }
mbed_official 0:51ac1d130fd4 267
mbed_official 0:51ac1d130fd4 268 /**
mbed_official 0:51ac1d130fd4 269 * Accept a new connection on a TCP listening netconn.
mbed_official 0:51ac1d130fd4 270 *
mbed_official 0:51ac1d130fd4 271 * @param conn the TCP listen netconn
mbed_official 0:51ac1d130fd4 272 * @param new_conn pointer where the new connection is stored
mbed_official 0:51ac1d130fd4 273 * @return ERR_OK if a new connection has been received or an error
mbed_official 0:51ac1d130fd4 274 * code otherwise
mbed_official 0:51ac1d130fd4 275 */
mbed_official 0:51ac1d130fd4 276 err_t
mbed_official 0:51ac1d130fd4 277 netconn_accept(struct netconn *conn, struct netconn **new_conn)
mbed_official 0:51ac1d130fd4 278 {
mbed_official 0:51ac1d130fd4 279 #if LWIP_TCP
mbed_official 0:51ac1d130fd4 280 struct netconn *newconn;
mbed_official 0:51ac1d130fd4 281 err_t err;
mbed_official 0:51ac1d130fd4 282 #if TCP_LISTEN_BACKLOG
mbed_official 0:51ac1d130fd4 283 struct api_msg msg;
mbed_official 0:51ac1d130fd4 284 #endif /* TCP_LISTEN_BACKLOG */
mbed_official 0:51ac1d130fd4 285
mbed_official 0:51ac1d130fd4 286 LWIP_ERROR("netconn_accept: invalid pointer", (new_conn != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 287 *new_conn = NULL;
mbed_official 0:51ac1d130fd4 288 LWIP_ERROR("netconn_accept: invalid conn", (conn != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 289 LWIP_ERROR("netconn_accept: invalid acceptmbox", sys_mbox_valid(&conn->acceptmbox), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 290
mbed_official 0:51ac1d130fd4 291 err = conn->last_err;
mbed_official 0:51ac1d130fd4 292 if (ERR_IS_FATAL(err)) {
mbed_official 0:51ac1d130fd4 293 /* don't recv on fatal errors: this might block the application task
mbed_official 0:51ac1d130fd4 294 waiting on acceptmbox forever! */
mbed_official 0:51ac1d130fd4 295 return err;
mbed_official 0:51ac1d130fd4 296 }
mbed_official 0:51ac1d130fd4 297
mbed_official 0:51ac1d130fd4 298 #if LWIP_SO_RCVTIMEO
mbed_official 0:51ac1d130fd4 299 if (sys_arch_mbox_fetch(&conn->acceptmbox, (void **)&newconn, conn->recv_timeout) == SYS_ARCH_TIMEOUT) {
mbed_official 0:51ac1d130fd4 300 NETCONN_SET_SAFE_ERR(conn, ERR_TIMEOUT);
mbed_official 0:51ac1d130fd4 301 return ERR_TIMEOUT;
mbed_official 0:51ac1d130fd4 302 }
mbed_official 0:51ac1d130fd4 303 #else
mbed_official 0:51ac1d130fd4 304 sys_arch_mbox_fetch(&conn->acceptmbox, (void **)&newconn, 0);
mbed_official 0:51ac1d130fd4 305 #endif /* LWIP_SO_RCVTIMEO*/
mbed_official 0:51ac1d130fd4 306 /* Register event with callback */
mbed_official 0:51ac1d130fd4 307 API_EVENT(conn, NETCONN_EVT_RCVMINUS, 0);
mbed_official 0:51ac1d130fd4 308
mbed_official 0:51ac1d130fd4 309 if (newconn == NULL) {
mbed_official 0:51ac1d130fd4 310 /* connection has been aborted */
mbed_official 0:51ac1d130fd4 311 NETCONN_SET_SAFE_ERR(conn, ERR_ABRT);
mbed_official 0:51ac1d130fd4 312 return ERR_ABRT;
mbed_official 0:51ac1d130fd4 313 }
mbed_official 0:51ac1d130fd4 314 #if TCP_LISTEN_BACKLOG
mbed_official 0:51ac1d130fd4 315 /* Let the stack know that we have accepted the connection. */
mbed_official 0:51ac1d130fd4 316 msg.function = do_recv;
mbed_official 0:51ac1d130fd4 317 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 318 /* don't care for the return value of do_recv */
mbed_official 0:51ac1d130fd4 319 TCPIP_APIMSG(&msg);
mbed_official 0:51ac1d130fd4 320 #endif /* TCP_LISTEN_BACKLOG */
mbed_official 0:51ac1d130fd4 321
mbed_official 0:51ac1d130fd4 322 *new_conn = newconn;
mbed_official 0:51ac1d130fd4 323 /* don't set conn->last_err: it's only ERR_OK, anyway */
mbed_official 0:51ac1d130fd4 324 return ERR_OK;
mbed_official 0:51ac1d130fd4 325 #else /* LWIP_TCP */
mbed_official 0:51ac1d130fd4 326 LWIP_UNUSED_ARG(conn);
mbed_official 0:51ac1d130fd4 327 LWIP_UNUSED_ARG(new_conn);
mbed_official 0:51ac1d130fd4 328 return ERR_ARG;
mbed_official 0:51ac1d130fd4 329 #endif /* LWIP_TCP */
mbed_official 0:51ac1d130fd4 330 }
mbed_official 0:51ac1d130fd4 331
mbed_official 0:51ac1d130fd4 332 /**
mbed_official 0:51ac1d130fd4 333 * Receive data: actual implementation that doesn't care whether pbuf or netbuf
mbed_official 0:51ac1d130fd4 334 * is received
mbed_official 0:51ac1d130fd4 335 *
mbed_official 0:51ac1d130fd4 336 * @param conn the netconn from which to receive data
mbed_official 0:51ac1d130fd4 337 * @param new_buf pointer where a new pbuf/netbuf is stored when received data
mbed_official 0:51ac1d130fd4 338 * @return ERR_OK if data has been received, an error code otherwise (timeout,
mbed_official 0:51ac1d130fd4 339 * memory error or another error)
mbed_official 0:51ac1d130fd4 340 */
mbed_official 0:51ac1d130fd4 341 static err_t
mbed_official 0:51ac1d130fd4 342 netconn_recv_data(struct netconn *conn, void **new_buf)
mbed_official 0:51ac1d130fd4 343 {
mbed_official 0:51ac1d130fd4 344 void *buf = NULL;
mbed_official 0:51ac1d130fd4 345 u16_t len;
mbed_official 0:51ac1d130fd4 346 err_t err;
mbed_official 0:51ac1d130fd4 347 #if LWIP_TCP
mbed_official 0:51ac1d130fd4 348 struct api_msg msg;
mbed_official 0:51ac1d130fd4 349 #endif /* LWIP_TCP */
mbed_official 0:51ac1d130fd4 350
mbed_official 0:51ac1d130fd4 351 LWIP_ERROR("netconn_recv: invalid pointer", (new_buf != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 352 *new_buf = NULL;
mbed_official 0:51ac1d130fd4 353 LWIP_ERROR("netconn_recv: invalid conn", (conn != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 354 LWIP_ERROR("netconn_accept: invalid recvmbox", sys_mbox_valid(&conn->recvmbox), return ERR_CONN;);
mbed_official 0:51ac1d130fd4 355
mbed_official 0:51ac1d130fd4 356 err = conn->last_err;
mbed_official 0:51ac1d130fd4 357 if (ERR_IS_FATAL(err)) {
mbed_official 0:51ac1d130fd4 358 /* don't recv on fatal errors: this might block the application task
mbed_official 0:51ac1d130fd4 359 waiting on recvmbox forever! */
mbed_official 0:51ac1d130fd4 360 /* @todo: this does not allow us to fetch data that has been put into recvmbox
mbed_official 0:51ac1d130fd4 361 before the fatal error occurred - is that a problem? */
mbed_official 0:51ac1d130fd4 362 return err;
mbed_official 0:51ac1d130fd4 363 }
mbed_official 0:51ac1d130fd4 364
mbed_official 0:51ac1d130fd4 365 #if LWIP_SO_RCVTIMEO
mbed_official 0:51ac1d130fd4 366 if (sys_arch_mbox_fetch(&conn->recvmbox, &buf, conn->recv_timeout) == SYS_ARCH_TIMEOUT) {
mbed_official 0:51ac1d130fd4 367 NETCONN_SET_SAFE_ERR(conn, ERR_TIMEOUT);
mbed_official 0:51ac1d130fd4 368 return ERR_TIMEOUT;
mbed_official 0:51ac1d130fd4 369 }
mbed_official 0:51ac1d130fd4 370 #else
mbed_official 0:51ac1d130fd4 371 sys_arch_mbox_fetch(&conn->recvmbox, &buf, 0);
mbed_official 0:51ac1d130fd4 372 #endif /* LWIP_SO_RCVTIMEO*/
mbed_official 0:51ac1d130fd4 373
mbed_official 0:51ac1d130fd4 374 #if LWIP_TCP
mbed_official 0:51ac1d130fd4 375 if (conn->type == NETCONN_TCP) {
mbed_official 0:51ac1d130fd4 376 if (!netconn_get_noautorecved(conn) || (buf == NULL)) {
mbed_official 0:51ac1d130fd4 377 /* Let the stack know that we have taken the data. */
mbed_official 0:51ac1d130fd4 378 /* TODO: Speedup: Don't block and wait for the answer here
mbed_official 0:51ac1d130fd4 379 (to prevent multiple thread-switches). */
mbed_official 0:51ac1d130fd4 380 msg.function = do_recv;
mbed_official 0:51ac1d130fd4 381 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 382 if (buf != NULL) {
mbed_official 0:51ac1d130fd4 383 msg.msg.msg.r.len = ((struct pbuf *)buf)->tot_len;
mbed_official 0:51ac1d130fd4 384 } else {
mbed_official 0:51ac1d130fd4 385 msg.msg.msg.r.len = 1;
mbed_official 0:51ac1d130fd4 386 }
mbed_official 0:51ac1d130fd4 387 /* don't care for the return value of do_recv */
mbed_official 0:51ac1d130fd4 388 TCPIP_APIMSG(&msg);
mbed_official 0:51ac1d130fd4 389 }
mbed_official 0:51ac1d130fd4 390
mbed_official 0:51ac1d130fd4 391 /* If we are closed, we indicate that we no longer wish to use the socket */
mbed_official 0:51ac1d130fd4 392 if (buf == NULL) {
mbed_official 0:51ac1d130fd4 393 API_EVENT(conn, NETCONN_EVT_RCVMINUS, 0);
mbed_official 0:51ac1d130fd4 394 /* Avoid to lose any previous error code */
mbed_official 0:51ac1d130fd4 395 NETCONN_SET_SAFE_ERR(conn, ERR_CLSD);
mbed_official 0:51ac1d130fd4 396 return ERR_CLSD;
mbed_official 0:51ac1d130fd4 397 }
mbed_official 0:51ac1d130fd4 398 len = ((struct pbuf *)buf)->tot_len;
mbed_official 0:51ac1d130fd4 399 }
mbed_official 0:51ac1d130fd4 400 #endif /* LWIP_TCP */
mbed_official 0:51ac1d130fd4 401 #if LWIP_TCP && (LWIP_UDP || LWIP_RAW)
mbed_official 0:51ac1d130fd4 402 else
mbed_official 0:51ac1d130fd4 403 #endif /* LWIP_TCP && (LWIP_UDP || LWIP_RAW) */
mbed_official 0:51ac1d130fd4 404 #if (LWIP_UDP || LWIP_RAW)
mbed_official 0:51ac1d130fd4 405 {
mbed_official 0:51ac1d130fd4 406 LWIP_ASSERT("buf != NULL", buf != NULL);
mbed_official 0:51ac1d130fd4 407 len = netbuf_len((struct netbuf *)buf);
mbed_official 0:51ac1d130fd4 408 }
mbed_official 0:51ac1d130fd4 409 #endif /* (LWIP_UDP || LWIP_RAW) */
mbed_official 0:51ac1d130fd4 410
mbed_official 0:51ac1d130fd4 411 #if LWIP_SO_RCVBUF
mbed_official 0:51ac1d130fd4 412 SYS_ARCH_DEC(conn->recv_avail, len);
mbed_official 0:51ac1d130fd4 413 #endif /* LWIP_SO_RCVBUF */
mbed_official 0:51ac1d130fd4 414 /* Register event with callback */
mbed_official 0:51ac1d130fd4 415 API_EVENT(conn, NETCONN_EVT_RCVMINUS, len);
mbed_official 0:51ac1d130fd4 416
mbed_official 0:51ac1d130fd4 417 LWIP_DEBUGF(API_LIB_DEBUG, ("netconn_recv_data: received %p, len=%"U16_F"\n", buf, len));
mbed_official 0:51ac1d130fd4 418
mbed_official 0:51ac1d130fd4 419 *new_buf = buf;
mbed_official 0:51ac1d130fd4 420 /* don't set conn->last_err: it's only ERR_OK, anyway */
mbed_official 0:51ac1d130fd4 421 return ERR_OK;
mbed_official 0:51ac1d130fd4 422 }
mbed_official 0:51ac1d130fd4 423
mbed_official 0:51ac1d130fd4 424 /**
mbed_official 0:51ac1d130fd4 425 * Receive data (in form of a pbuf) from a TCP netconn
mbed_official 0:51ac1d130fd4 426 *
mbed_official 0:51ac1d130fd4 427 * @param conn the netconn from which to receive data
mbed_official 0:51ac1d130fd4 428 * @param new_buf pointer where a new pbuf is stored when received data
mbed_official 0:51ac1d130fd4 429 * @return ERR_OK if data has been received, an error code otherwise (timeout,
mbed_official 0:51ac1d130fd4 430 * memory error or another error)
mbed_official 0:51ac1d130fd4 431 * ERR_ARG if conn is not a TCP netconn
mbed_official 0:51ac1d130fd4 432 */
mbed_official 0:51ac1d130fd4 433 err_t
mbed_official 0:51ac1d130fd4 434 netconn_recv_tcp_pbuf(struct netconn *conn, struct pbuf **new_buf)
mbed_official 0:51ac1d130fd4 435 {
mbed_official 0:51ac1d130fd4 436 LWIP_ERROR("netconn_recv: invalid conn", (conn != NULL) &&
mbed_official 0:51ac1d130fd4 437 netconn_type(conn) == NETCONN_TCP, return ERR_ARG;);
mbed_official 0:51ac1d130fd4 438
mbed_official 0:51ac1d130fd4 439 return netconn_recv_data(conn, (void **)new_buf);
mbed_official 0:51ac1d130fd4 440 }
mbed_official 0:51ac1d130fd4 441
mbed_official 0:51ac1d130fd4 442 /**
mbed_official 0:51ac1d130fd4 443 * Receive data (in form of a netbuf containing a packet buffer) from a netconn
mbed_official 0:51ac1d130fd4 444 *
mbed_official 0:51ac1d130fd4 445 * @param conn the netconn from which to receive data
mbed_official 0:51ac1d130fd4 446 * @param new_buf pointer where a new netbuf is stored when received data
mbed_official 0:51ac1d130fd4 447 * @return ERR_OK if data has been received, an error code otherwise (timeout,
mbed_official 0:51ac1d130fd4 448 * memory error or another error)
mbed_official 0:51ac1d130fd4 449 */
mbed_official 0:51ac1d130fd4 450 err_t
mbed_official 0:51ac1d130fd4 451 netconn_recv(struct netconn *conn, struct netbuf **new_buf)
mbed_official 0:51ac1d130fd4 452 {
mbed_official 0:51ac1d130fd4 453 #if LWIP_TCP
mbed_official 0:51ac1d130fd4 454 struct netbuf *buf = NULL;
mbed_official 0:51ac1d130fd4 455 err_t err;
mbed_official 0:51ac1d130fd4 456 #endif /* LWIP_TCP */
mbed_official 0:51ac1d130fd4 457
mbed_official 0:51ac1d130fd4 458 LWIP_ERROR("netconn_recv: invalid pointer", (new_buf != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 459 *new_buf = NULL;
mbed_official 0:51ac1d130fd4 460 LWIP_ERROR("netconn_recv: invalid conn", (conn != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 461 LWIP_ERROR("netconn_accept: invalid recvmbox", sys_mbox_valid(&conn->recvmbox), return ERR_CONN;);
mbed_official 0:51ac1d130fd4 462
mbed_official 0:51ac1d130fd4 463 #if LWIP_TCP
mbed_official 0:51ac1d130fd4 464 if (conn->type == NETCONN_TCP) {
mbed_official 0:51ac1d130fd4 465 struct pbuf *p = NULL;
mbed_official 0:51ac1d130fd4 466 /* This is not a listening netconn, since recvmbox is set */
mbed_official 0:51ac1d130fd4 467
mbed_official 0:51ac1d130fd4 468 buf = (struct netbuf *)memp_malloc(MEMP_NETBUF);
mbed_official 0:51ac1d130fd4 469 if (buf == NULL) {
mbed_official 0:51ac1d130fd4 470 NETCONN_SET_SAFE_ERR(conn, ERR_MEM);
mbed_official 0:51ac1d130fd4 471 return ERR_MEM;
mbed_official 0:51ac1d130fd4 472 }
mbed_official 0:51ac1d130fd4 473
mbed_official 0:51ac1d130fd4 474 err = netconn_recv_data(conn, (void **)&p);
mbed_official 0:51ac1d130fd4 475 if (err != ERR_OK) {
mbed_official 0:51ac1d130fd4 476 memp_free(MEMP_NETBUF, buf);
mbed_official 0:51ac1d130fd4 477 return err;
mbed_official 0:51ac1d130fd4 478 }
mbed_official 0:51ac1d130fd4 479 LWIP_ASSERT("p != NULL", p != NULL);
mbed_official 0:51ac1d130fd4 480
mbed_official 0:51ac1d130fd4 481 buf->p = p;
mbed_official 0:51ac1d130fd4 482 buf->ptr = p;
mbed_official 0:51ac1d130fd4 483 buf->port = 0;
mbed_official 0:51ac1d130fd4 484 ip_addr_set_any(&buf->addr);
mbed_official 0:51ac1d130fd4 485 *new_buf = buf;
mbed_official 0:51ac1d130fd4 486 /* don't set conn->last_err: it's only ERR_OK, anyway */
mbed_official 0:51ac1d130fd4 487 return ERR_OK;
mbed_official 0:51ac1d130fd4 488 } else
mbed_official 0:51ac1d130fd4 489 #endif /* LWIP_TCP */
mbed_official 0:51ac1d130fd4 490 {
mbed_official 0:51ac1d130fd4 491 #if (LWIP_UDP || LWIP_RAW)
mbed_official 0:51ac1d130fd4 492 return netconn_recv_data(conn, (void **)new_buf);
mbed_official 0:51ac1d130fd4 493 #endif /* (LWIP_UDP || LWIP_RAW) */
mbed_official 0:51ac1d130fd4 494 }
mbed_official 0:51ac1d130fd4 495 }
mbed_official 0:51ac1d130fd4 496
mbed_official 0:51ac1d130fd4 497 /**
mbed_official 0:51ac1d130fd4 498 * TCP: update the receive window: by calling this, the application
mbed_official 0:51ac1d130fd4 499 * tells the stack that it has processed data and is able to accept
mbed_official 0:51ac1d130fd4 500 * new data.
mbed_official 0:51ac1d130fd4 501 * ATTENTION: use with care, this is mainly used for sockets!
mbed_official 0:51ac1d130fd4 502 * Can only be used when calling netconn_set_noautorecved(conn, 1) before.
mbed_official 0:51ac1d130fd4 503 *
mbed_official 0:51ac1d130fd4 504 * @param conn the netconn for which to update the receive window
mbed_official 0:51ac1d130fd4 505 * @param length amount of data processed (ATTENTION: this must be accurate!)
mbed_official 0:51ac1d130fd4 506 */
mbed_official 0:51ac1d130fd4 507 void
mbed_official 0:51ac1d130fd4 508 netconn_recved(struct netconn *conn, u32_t length)
mbed_official 0:51ac1d130fd4 509 {
mbed_official 0:51ac1d130fd4 510 #if LWIP_TCP
mbed_official 0:51ac1d130fd4 511 if ((conn != NULL) && (conn->type == NETCONN_TCP) &&
mbed_official 0:51ac1d130fd4 512 (netconn_get_noautorecved(conn))) {
mbed_official 0:51ac1d130fd4 513 struct api_msg msg;
mbed_official 0:51ac1d130fd4 514 /* Let the stack know that we have taken the data. */
mbed_official 0:51ac1d130fd4 515 /* TODO: Speedup: Don't block and wait for the answer here
mbed_official 0:51ac1d130fd4 516 (to prevent multiple thread-switches). */
mbed_official 0:51ac1d130fd4 517 msg.function = do_recv;
mbed_official 0:51ac1d130fd4 518 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 519 msg.msg.msg.r.len = length;
mbed_official 0:51ac1d130fd4 520 /* don't care for the return value of do_recv */
mbed_official 0:51ac1d130fd4 521 TCPIP_APIMSG(&msg);
mbed_official 0:51ac1d130fd4 522 }
mbed_official 0:51ac1d130fd4 523 #else /* LWIP_TCP */
mbed_official 0:51ac1d130fd4 524 LWIP_UNUSED_ARG(conn);
mbed_official 0:51ac1d130fd4 525 LWIP_UNUSED_ARG(length);
mbed_official 0:51ac1d130fd4 526 #endif /* LWIP_TCP */
mbed_official 0:51ac1d130fd4 527 }
mbed_official 0:51ac1d130fd4 528
mbed_official 0:51ac1d130fd4 529 /**
mbed_official 0:51ac1d130fd4 530 * Send data (in form of a netbuf) to a specific remote IP address and port.
mbed_official 0:51ac1d130fd4 531 * Only to be used for UDP and RAW netconns (not TCP).
mbed_official 0:51ac1d130fd4 532 *
mbed_official 0:51ac1d130fd4 533 * @param conn the netconn over which to send data
mbed_official 0:51ac1d130fd4 534 * @param buf a netbuf containing the data to send
mbed_official 0:51ac1d130fd4 535 * @param addr the remote IP address to which to send the data
mbed_official 0:51ac1d130fd4 536 * @param port the remote port to which to send the data
mbed_official 0:51ac1d130fd4 537 * @return ERR_OK if data was sent, any other err_t on error
mbed_official 0:51ac1d130fd4 538 */
mbed_official 0:51ac1d130fd4 539 err_t
mbed_official 0:51ac1d130fd4 540 netconn_sendto(struct netconn *conn, struct netbuf *buf, ip_addr_t *addr, u16_t port)
mbed_official 0:51ac1d130fd4 541 {
mbed_official 0:51ac1d130fd4 542 if (buf != NULL) {
mbed_official 0:51ac1d130fd4 543 ip_addr_set(&buf->addr, addr);
mbed_official 0:51ac1d130fd4 544 buf->port = port;
mbed_official 0:51ac1d130fd4 545 return netconn_send(conn, buf);
mbed_official 0:51ac1d130fd4 546 }
mbed_official 0:51ac1d130fd4 547 return ERR_VAL;
mbed_official 0:51ac1d130fd4 548 }
mbed_official 0:51ac1d130fd4 549
mbed_official 0:51ac1d130fd4 550 /**
mbed_official 0:51ac1d130fd4 551 * Send data over a UDP or RAW netconn (that is already connected).
mbed_official 0:51ac1d130fd4 552 *
mbed_official 0:51ac1d130fd4 553 * @param conn the UDP or RAW netconn over which to send data
mbed_official 0:51ac1d130fd4 554 * @param buf a netbuf containing the data to send
mbed_official 0:51ac1d130fd4 555 * @return ERR_OK if data was sent, any other err_t on error
mbed_official 0:51ac1d130fd4 556 */
mbed_official 0:51ac1d130fd4 557 err_t
mbed_official 0:51ac1d130fd4 558 netconn_send(struct netconn *conn, struct netbuf *buf)
mbed_official 0:51ac1d130fd4 559 {
mbed_official 0:51ac1d130fd4 560 struct api_msg msg;
mbed_official 0:51ac1d130fd4 561 err_t err;
mbed_official 0:51ac1d130fd4 562
mbed_official 0:51ac1d130fd4 563 LWIP_ERROR("netconn_send: invalid conn", (conn != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 564
mbed_official 0:51ac1d130fd4 565 LWIP_DEBUGF(API_LIB_DEBUG, ("netconn_send: sending %"U16_F" bytes\n", buf->p->tot_len));
mbed_official 0:51ac1d130fd4 566 msg.function = do_send;
mbed_official 0:51ac1d130fd4 567 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 568 msg.msg.msg.b = buf;
mbed_official 0:51ac1d130fd4 569 err = TCPIP_APIMSG(&msg);
mbed_official 0:51ac1d130fd4 570
mbed_official 0:51ac1d130fd4 571 NETCONN_SET_SAFE_ERR(conn, err);
mbed_official 0:51ac1d130fd4 572 return err;
mbed_official 0:51ac1d130fd4 573 }
mbed_official 0:51ac1d130fd4 574
mbed_official 0:51ac1d130fd4 575 /**
mbed_official 0:51ac1d130fd4 576 * Send data over a TCP netconn.
mbed_official 0:51ac1d130fd4 577 *
mbed_official 0:51ac1d130fd4 578 * @param conn the TCP netconn over which to send data
mbed_official 0:51ac1d130fd4 579 * @param dataptr pointer to the application buffer that contains the data to send
mbed_official 0:51ac1d130fd4 580 * @param size size of the application data to send
mbed_official 0:51ac1d130fd4 581 * @param apiflags combination of following flags :
mbed_official 0:51ac1d130fd4 582 * - NETCONN_COPY: data will be copied into memory belonging to the stack
mbed_official 0:51ac1d130fd4 583 * - NETCONN_MORE: for TCP connection, PSH flag will be set on last segment sent
mbed_official 0:51ac1d130fd4 584 * - NETCONN_DONTBLOCK: only write the data if all dat can be written at once
mbed_official 0:51ac1d130fd4 585 * @return ERR_OK if data was sent, any other err_t on error
mbed_official 0:51ac1d130fd4 586 */
mbed_official 0:51ac1d130fd4 587 err_t
mbed_official 0:51ac1d130fd4 588 netconn_write(struct netconn *conn, const void *dataptr, size_t size, u8_t apiflags)
mbed_official 0:51ac1d130fd4 589 {
mbed_official 0:51ac1d130fd4 590 struct api_msg msg;
mbed_official 0:51ac1d130fd4 591 err_t err;
mbed_official 0:51ac1d130fd4 592
mbed_official 0:51ac1d130fd4 593 LWIP_ERROR("netconn_write: invalid conn", (conn != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 594 LWIP_ERROR("netconn_write: invalid conn->type", (conn->type == NETCONN_TCP), return ERR_VAL;);
mbed_official 0:51ac1d130fd4 595 if (size == 0) {
mbed_official 0:51ac1d130fd4 596 return ERR_OK;
mbed_official 0:51ac1d130fd4 597 }
mbed_official 0:51ac1d130fd4 598
mbed_official 0:51ac1d130fd4 599 /* @todo: for non-blocking write, check if 'size' would ever fit into
mbed_official 0:51ac1d130fd4 600 snd_queue or snd_buf */
mbed_official 0:51ac1d130fd4 601 msg.function = do_write;
mbed_official 0:51ac1d130fd4 602 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 603 msg.msg.msg.w.dataptr = dataptr;
mbed_official 0:51ac1d130fd4 604 msg.msg.msg.w.apiflags = apiflags;
mbed_official 0:51ac1d130fd4 605 msg.msg.msg.w.len = size;
mbed_official 0:51ac1d130fd4 606 /* For locking the core: this _can_ be delayed on low memory/low send buffer,
mbed_official 0:51ac1d130fd4 607 but if it is, this is done inside api_msg.c:do_write(), so we can use the
mbed_official 0:51ac1d130fd4 608 non-blocking version here. */
mbed_official 0:51ac1d130fd4 609 err = TCPIP_APIMSG(&msg);
mbed_official 0:51ac1d130fd4 610
mbed_official 0:51ac1d130fd4 611 NETCONN_SET_SAFE_ERR(conn, err);
mbed_official 0:51ac1d130fd4 612 return err;
mbed_official 0:51ac1d130fd4 613 }
mbed_official 0:51ac1d130fd4 614
mbed_official 0:51ac1d130fd4 615 /**
mbed_official 0:51ac1d130fd4 616 * Close ot shutdown a TCP netconn (doesn't delete it).
mbed_official 0:51ac1d130fd4 617 *
mbed_official 0:51ac1d130fd4 618 * @param conn the TCP netconn to close or shutdown
mbed_official 0:51ac1d130fd4 619 * @param how fully close or only shutdown one side?
mbed_official 0:51ac1d130fd4 620 * @return ERR_OK if the netconn was closed, any other err_t on error
mbed_official 0:51ac1d130fd4 621 */
mbed_official 0:51ac1d130fd4 622 static err_t
mbed_official 0:51ac1d130fd4 623 netconn_close_shutdown(struct netconn *conn, u8_t how)
mbed_official 0:51ac1d130fd4 624 {
mbed_official 0:51ac1d130fd4 625 struct api_msg msg;
mbed_official 0:51ac1d130fd4 626 err_t err;
mbed_official 0:51ac1d130fd4 627
mbed_official 0:51ac1d130fd4 628 LWIP_ERROR("netconn_close: invalid conn", (conn != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 629
mbed_official 0:51ac1d130fd4 630 msg.function = do_close;
mbed_official 0:51ac1d130fd4 631 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 632 /* shutting down both ends is the same as closing */
mbed_official 0:51ac1d130fd4 633 msg.msg.msg.sd.shut = how;
mbed_official 0:51ac1d130fd4 634 /* because of the LWIP_TCPIP_CORE_LOCKING implementation of do_close,
mbed_official 0:51ac1d130fd4 635 don't use TCPIP_APIMSG here */
mbed_official 0:51ac1d130fd4 636 err = tcpip_apimsg(&msg);
mbed_official 0:51ac1d130fd4 637
mbed_official 0:51ac1d130fd4 638 NETCONN_SET_SAFE_ERR(conn, err);
mbed_official 0:51ac1d130fd4 639 return err;
mbed_official 0:51ac1d130fd4 640 }
mbed_official 0:51ac1d130fd4 641
mbed_official 0:51ac1d130fd4 642 /**
mbed_official 0:51ac1d130fd4 643 * Close a TCP netconn (doesn't delete it).
mbed_official 0:51ac1d130fd4 644 *
mbed_official 0:51ac1d130fd4 645 * @param conn the TCP netconn to close
mbed_official 0:51ac1d130fd4 646 * @return ERR_OK if the netconn was closed, any other err_t on error
mbed_official 0:51ac1d130fd4 647 */
mbed_official 0:51ac1d130fd4 648 err_t
mbed_official 0:51ac1d130fd4 649 netconn_close(struct netconn *conn)
mbed_official 0:51ac1d130fd4 650 {
mbed_official 0:51ac1d130fd4 651 /* shutting down both ends is the same as closing */
mbed_official 0:51ac1d130fd4 652 return netconn_close_shutdown(conn, NETCONN_SHUT_RDWR);
mbed_official 0:51ac1d130fd4 653 }
mbed_official 0:51ac1d130fd4 654
mbed_official 0:51ac1d130fd4 655 /**
mbed_official 0:51ac1d130fd4 656 * Shut down one or both sides of a TCP netconn (doesn't delete it).
mbed_official 0:51ac1d130fd4 657 *
mbed_official 0:51ac1d130fd4 658 * @param conn the TCP netconn to shut down
mbed_official 0:51ac1d130fd4 659 * @return ERR_OK if the netconn was closed, any other err_t on error
mbed_official 0:51ac1d130fd4 660 */
mbed_official 0:51ac1d130fd4 661 err_t
mbed_official 0:51ac1d130fd4 662 netconn_shutdown(struct netconn *conn, u8_t shut_rx, u8_t shut_tx)
mbed_official 0:51ac1d130fd4 663 {
mbed_official 0:51ac1d130fd4 664 return netconn_close_shutdown(conn, (shut_rx ? NETCONN_SHUT_RD : 0) | (shut_tx ? NETCONN_SHUT_WR : 0));
mbed_official 0:51ac1d130fd4 665 }
mbed_official 0:51ac1d130fd4 666
mbed_official 0:51ac1d130fd4 667 #if LWIP_IGMP
mbed_official 0:51ac1d130fd4 668 /**
mbed_official 0:51ac1d130fd4 669 * Join multicast groups for UDP netconns.
mbed_official 0:51ac1d130fd4 670 *
mbed_official 0:51ac1d130fd4 671 * @param conn the UDP netconn for which to change multicast addresses
mbed_official 0:51ac1d130fd4 672 * @param multiaddr IP address of the multicast group to join or leave
mbed_official 0:51ac1d130fd4 673 * @param netif_addr the IP address of the network interface on which to send
mbed_official 0:51ac1d130fd4 674 * the igmp message
mbed_official 0:51ac1d130fd4 675 * @param join_or_leave flag whether to send a join- or leave-message
mbed_official 0:51ac1d130fd4 676 * @return ERR_OK if the action was taken, any err_t on error
mbed_official 0:51ac1d130fd4 677 */
mbed_official 0:51ac1d130fd4 678 err_t
mbed_official 0:51ac1d130fd4 679 netconn_join_leave_group(struct netconn *conn,
mbed_official 0:51ac1d130fd4 680 ip_addr_t *multiaddr,
mbed_official 0:51ac1d130fd4 681 ip_addr_t *netif_addr,
mbed_official 0:51ac1d130fd4 682 enum netconn_igmp join_or_leave)
mbed_official 0:51ac1d130fd4 683 {
mbed_official 0:51ac1d130fd4 684 struct api_msg msg;
mbed_official 0:51ac1d130fd4 685 err_t err;
mbed_official 0:51ac1d130fd4 686
mbed_official 0:51ac1d130fd4 687 LWIP_ERROR("netconn_join_leave_group: invalid conn", (conn != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 688
mbed_official 0:51ac1d130fd4 689 msg.function = do_join_leave_group;
mbed_official 0:51ac1d130fd4 690 msg.msg.conn = conn;
mbed_official 0:51ac1d130fd4 691 msg.msg.msg.jl.multiaddr = multiaddr;
mbed_official 0:51ac1d130fd4 692 msg.msg.msg.jl.netif_addr = netif_addr;
mbed_official 0:51ac1d130fd4 693 msg.msg.msg.jl.join_or_leave = join_or_leave;
mbed_official 0:51ac1d130fd4 694 err = TCPIP_APIMSG(&msg);
mbed_official 0:51ac1d130fd4 695
mbed_official 0:51ac1d130fd4 696 NETCONN_SET_SAFE_ERR(conn, err);
mbed_official 0:51ac1d130fd4 697 return err;
mbed_official 0:51ac1d130fd4 698 }
mbed_official 0:51ac1d130fd4 699 #endif /* LWIP_IGMP */
mbed_official 0:51ac1d130fd4 700
mbed_official 0:51ac1d130fd4 701 #if LWIP_DNS
mbed_official 0:51ac1d130fd4 702 /**
mbed_official 0:51ac1d130fd4 703 * Execute a DNS query, only one IP address is returned
mbed_official 0:51ac1d130fd4 704 *
mbed_official 0:51ac1d130fd4 705 * @param name a string representation of the DNS host name to query
mbed_official 0:51ac1d130fd4 706 * @param addr a preallocated ip_addr_t where to store the resolved IP address
mbed_official 0:51ac1d130fd4 707 * @return ERR_OK: resolving succeeded
mbed_official 0:51ac1d130fd4 708 * ERR_MEM: memory error, try again later
mbed_official 0:51ac1d130fd4 709 * ERR_ARG: dns client not initialized or invalid hostname
mbed_official 0:51ac1d130fd4 710 * ERR_VAL: dns server response was invalid
mbed_official 0:51ac1d130fd4 711 */
mbed_official 0:51ac1d130fd4 712 err_t
mbed_official 0:51ac1d130fd4 713 netconn_gethostbyname(const char *name, ip_addr_t *addr)
mbed_official 0:51ac1d130fd4 714 {
mbed_official 0:51ac1d130fd4 715 struct dns_api_msg msg;
mbed_official 0:51ac1d130fd4 716 err_t err;
mbed_official 0:51ac1d130fd4 717 sys_sem_t sem;
mbed_official 0:51ac1d130fd4 718
mbed_official 0:51ac1d130fd4 719 LWIP_ERROR("netconn_gethostbyname: invalid name", (name != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 720 LWIP_ERROR("netconn_gethostbyname: invalid addr", (addr != NULL), return ERR_ARG;);
mbed_official 0:51ac1d130fd4 721
mbed_official 0:51ac1d130fd4 722 err = sys_sem_new(&sem, 0);
mbed_official 0:51ac1d130fd4 723 if (err != ERR_OK) {
mbed_official 0:51ac1d130fd4 724 return err;
mbed_official 0:51ac1d130fd4 725 }
mbed_official 0:51ac1d130fd4 726
mbed_official 0:51ac1d130fd4 727 msg.name = name;
mbed_official 0:51ac1d130fd4 728 msg.addr = addr;
mbed_official 0:51ac1d130fd4 729 msg.err = &err;
mbed_official 0:51ac1d130fd4 730 msg.sem = &sem;
mbed_official 0:51ac1d130fd4 731
mbed_official 0:51ac1d130fd4 732 tcpip_callback(do_gethostbyname, &msg);
mbed_official 0:51ac1d130fd4 733 sys_sem_wait(&sem);
mbed_official 0:51ac1d130fd4 734 sys_sem_free(&sem);
mbed_official 0:51ac1d130fd4 735
mbed_official 0:51ac1d130fd4 736 return err;
mbed_official 0:51ac1d130fd4 737 }
mbed_official 0:51ac1d130fd4 738 #endif /* LWIP_DNS*/
mbed_official 0:51ac1d130fd4 739
mbed_official 0:51ac1d130fd4 740 #endif /* LWIP_NETCONN */