Murat Kilivan / Mbed 2 deprecated HTMLServer_Sample

An example HTTP Server using new Ethernet Interface and localfilesystem.

Dependencies:   EthernetInterface HttpServer mbed-rpc mbed-rtos mbed

Fork of giken9_HTMLServer_Sample by Yasushi TAUCHI

EthernetInterface/lwip/api/api_msg.c@0:7766f6712673, 2014-03-12 (annotated)

Committer:
yueee_yt
Date:
Wed Mar 12 04:19:54 2014 +0000
Revision:
0:7766f6712673
???????????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yueee_yt 0:7766f6712673 1 /**
yueee_yt 0:7766f6712673 2 * @file
yueee_yt 0:7766f6712673 3 * Sequential API Internal module
yueee_yt 0:7766f6712673 4 *
yueee_yt 0:7766f6712673 5 */
yueee_yt 0:7766f6712673 6
yueee_yt 0:7766f6712673 7 /*
yueee_yt 0:7766f6712673 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
yueee_yt 0:7766f6712673 9 * All rights reserved.
yueee_yt 0:7766f6712673 10 *
yueee_yt 0:7766f6712673 11 * Redistribution and use in source and binary forms, with or without modification,
yueee_yt 0:7766f6712673 12 * are permitted provided that the following conditions are met:
yueee_yt 0:7766f6712673 13 *
yueee_yt 0:7766f6712673 14 * 1. Redistributions of source code must retain the above copyright notice,
yueee_yt 0:7766f6712673 15 * this list of conditions and the following disclaimer.
yueee_yt 0:7766f6712673 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
yueee_yt 0:7766f6712673 17 * this list of conditions and the following disclaimer in the documentation
yueee_yt 0:7766f6712673 18 * and/or other materials provided with the distribution.
yueee_yt 0:7766f6712673 19 * 3. The name of the author may not be used to endorse or promote products
yueee_yt 0:7766f6712673 20 * derived from this software without specific prior written permission.
yueee_yt 0:7766f6712673 21 *
yueee_yt 0:7766f6712673 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
yueee_yt 0:7766f6712673 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
yueee_yt 0:7766f6712673 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
yueee_yt 0:7766f6712673 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
yueee_yt 0:7766f6712673 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
yueee_yt 0:7766f6712673 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
yueee_yt 0:7766f6712673 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
yueee_yt 0:7766f6712673 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
yueee_yt 0:7766f6712673 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
yueee_yt 0:7766f6712673 31 * OF SUCH DAMAGE.
yueee_yt 0:7766f6712673 32 *
yueee_yt 0:7766f6712673 33 * This file is part of the lwIP TCP/IP stack.
yueee_yt 0:7766f6712673 34 *
yueee_yt 0:7766f6712673 35 * Author: Adam Dunkels <adam@sics.se>
yueee_yt 0:7766f6712673 36 *
yueee_yt 0:7766f6712673 37 */
yueee_yt 0:7766f6712673 38
yueee_yt 0:7766f6712673 39 #include "lwip/opt.h"
yueee_yt 0:7766f6712673 40
yueee_yt 0:7766f6712673 41 #if LWIP_NETCONN /* don't build if not configured for use in lwipopts.h */
yueee_yt 0:7766f6712673 42
yueee_yt 0:7766f6712673 43 #include "lwip/api_msg.h"
yueee_yt 0:7766f6712673 44
yueee_yt 0:7766f6712673 45 #include "lwip/ip.h"
yueee_yt 0:7766f6712673 46 #include "lwip/udp.h"
yueee_yt 0:7766f6712673 47 #include "lwip/tcp.h"
yueee_yt 0:7766f6712673 48 #include "lwip/raw.h"
yueee_yt 0:7766f6712673 49
yueee_yt 0:7766f6712673 50 #include "lwip/memp.h"
yueee_yt 0:7766f6712673 51 #include "lwip/tcpip.h"
yueee_yt 0:7766f6712673 52 #include "lwip/igmp.h"
yueee_yt 0:7766f6712673 53 #include "lwip/dns.h"
yueee_yt 0:7766f6712673 54
yueee_yt 0:7766f6712673 55 #include <string.h>
yueee_yt 0:7766f6712673 56
yueee_yt 0:7766f6712673 57 #define SET_NONBLOCKING_CONNECT(conn, val) do { if(val) { \
yueee_yt 0:7766f6712673 58 (conn)->flags |= NETCONN_FLAG_IN_NONBLOCKING_CONNECT; \
yueee_yt 0:7766f6712673 59 } else { \
yueee_yt 0:7766f6712673 60 (conn)->flags &= ~ NETCONN_FLAG_IN_NONBLOCKING_CONNECT; }} while(0)
yueee_yt 0:7766f6712673 61 #define IN_NONBLOCKING_CONNECT(conn) (((conn)->flags & NETCONN_FLAG_IN_NONBLOCKING_CONNECT) != 0)
yueee_yt 0:7766f6712673 62
yueee_yt 0:7766f6712673 63 /* forward declarations */
yueee_yt 0:7766f6712673 64 #if LWIP_TCP
yueee_yt 0:7766f6712673 65 static err_t do_writemore(struct netconn *conn);
yueee_yt 0:7766f6712673 66 static void do_close_internal(struct netconn *conn);
yueee_yt 0:7766f6712673 67 #endif
yueee_yt 0:7766f6712673 68
yueee_yt 0:7766f6712673 69 #if LWIP_RAW
yueee_yt 0:7766f6712673 70 /**
yueee_yt 0:7766f6712673 71 * Receive callback function for RAW netconns.
yueee_yt 0:7766f6712673 72 * Doesn't 'eat' the packet, only references it and sends it to
yueee_yt 0:7766f6712673 73 * conn->recvmbox
yueee_yt 0:7766f6712673 74 *
yueee_yt 0:7766f6712673 75 * @see raw.h (struct raw_pcb.recv) for parameters and return value
yueee_yt 0:7766f6712673 76 */
yueee_yt 0:7766f6712673 77 static u8_t
yueee_yt 0:7766f6712673 78 recv_raw(void *arg, struct raw_pcb *pcb, struct pbuf *p,
yueee_yt 0:7766f6712673 79 ip_addr_t *addr)
yueee_yt 0:7766f6712673 80 {
yueee_yt 0:7766f6712673 81 struct pbuf *q;
yueee_yt 0:7766f6712673 82 struct netbuf *buf;
yueee_yt 0:7766f6712673 83 struct netconn *conn;
yueee_yt 0:7766f6712673 84
yueee_yt 0:7766f6712673 85 LWIP_UNUSED_ARG(addr);
yueee_yt 0:7766f6712673 86 conn = (struct netconn *)arg;
yueee_yt 0:7766f6712673 87
yueee_yt 0:7766f6712673 88 if ((conn != NULL) && sys_mbox_valid(&conn->recvmbox)) {
yueee_yt 0:7766f6712673 89 #if LWIP_SO_RCVBUF
yueee_yt 0:7766f6712673 90 int recv_avail;
yueee_yt 0:7766f6712673 91 SYS_ARCH_GET(conn->recv_avail, recv_avail);
yueee_yt 0:7766f6712673 92 if ((recv_avail + (int)(p->tot_len)) > conn->recv_bufsize) {
yueee_yt 0:7766f6712673 93 return 0;
yueee_yt 0:7766f6712673 94 }
yueee_yt 0:7766f6712673 95 #endif /* LWIP_SO_RCVBUF */
yueee_yt 0:7766f6712673 96 /* copy the whole packet into new pbufs */
yueee_yt 0:7766f6712673 97 q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
yueee_yt 0:7766f6712673 98 if(q != NULL) {
yueee_yt 0:7766f6712673 99 if (pbuf_copy(q, p) != ERR_OK) {
yueee_yt 0:7766f6712673 100 pbuf_free(q);
yueee_yt 0:7766f6712673 101 q = NULL;
yueee_yt 0:7766f6712673 102 }
yueee_yt 0:7766f6712673 103 }
yueee_yt 0:7766f6712673 104
yueee_yt 0:7766f6712673 105 if (q != NULL) {
yueee_yt 0:7766f6712673 106 u16_t len;
yueee_yt 0:7766f6712673 107 buf = (struct netbuf *)memp_malloc(MEMP_NETBUF);
yueee_yt 0:7766f6712673 108 if (buf == NULL) {
yueee_yt 0:7766f6712673 109 pbuf_free(q);
yueee_yt 0:7766f6712673 110 return 0;
yueee_yt 0:7766f6712673 111 }
yueee_yt 0:7766f6712673 112
yueee_yt 0:7766f6712673 113 buf->p = q;
yueee_yt 0:7766f6712673 114 buf->ptr = q;
yueee_yt 0:7766f6712673 115 ip_addr_copy(buf->addr, *ip_current_src_addr());
yueee_yt 0:7766f6712673 116 buf->port = pcb->protocol;
yueee_yt 0:7766f6712673 117
yueee_yt 0:7766f6712673 118 len = q->tot_len;
yueee_yt 0:7766f6712673 119 if (sys_mbox_trypost(&conn->recvmbox, buf) != ERR_OK) {
yueee_yt 0:7766f6712673 120 netbuf_delete(buf);
yueee_yt 0:7766f6712673 121 return 0;
yueee_yt 0:7766f6712673 122 } else {
yueee_yt 0:7766f6712673 123 #if LWIP_SO_RCVBUF
yueee_yt 0:7766f6712673 124 SYS_ARCH_INC(conn->recv_avail, len);
yueee_yt 0:7766f6712673 125 #endif /* LWIP_SO_RCVBUF */
yueee_yt 0:7766f6712673 126 /* Register event with callback */
yueee_yt 0:7766f6712673 127 API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
yueee_yt 0:7766f6712673 128 }
yueee_yt 0:7766f6712673 129 }
yueee_yt 0:7766f6712673 130 }
yueee_yt 0:7766f6712673 131
yueee_yt 0:7766f6712673 132 return 0; /* do not eat the packet */
yueee_yt 0:7766f6712673 133 }
yueee_yt 0:7766f6712673 134 #endif /* LWIP_RAW*/
yueee_yt 0:7766f6712673 135
yueee_yt 0:7766f6712673 136 #if LWIP_UDP
yueee_yt 0:7766f6712673 137 /**
yueee_yt 0:7766f6712673 138 * Receive callback function for UDP netconns.
yueee_yt 0:7766f6712673 139 * Posts the packet to conn->recvmbox or deletes it on memory error.
yueee_yt 0:7766f6712673 140 *
yueee_yt 0:7766f6712673 141 * @see udp.h (struct udp_pcb.recv) for parameters
yueee_yt 0:7766f6712673 142 */
yueee_yt 0:7766f6712673 143 static void
yueee_yt 0:7766f6712673 144 recv_udp(void *arg, struct udp_pcb *pcb, struct pbuf *p,
yueee_yt 0:7766f6712673 145 ip_addr_t *addr, u16_t port)
yueee_yt 0:7766f6712673 146 {
yueee_yt 0:7766f6712673 147 struct netbuf *buf;
yueee_yt 0:7766f6712673 148 struct netconn *conn;
yueee_yt 0:7766f6712673 149 u16_t len;
yueee_yt 0:7766f6712673 150 #if LWIP_SO_RCVBUF
yueee_yt 0:7766f6712673 151 int recv_avail;
yueee_yt 0:7766f6712673 152 #endif /* LWIP_SO_RCVBUF */
yueee_yt 0:7766f6712673 153
yueee_yt 0:7766f6712673 154 LWIP_UNUSED_ARG(pcb); /* only used for asserts... */
yueee_yt 0:7766f6712673 155 LWIP_ASSERT("recv_udp must have a pcb argument", pcb != NULL);
yueee_yt 0:7766f6712673 156 LWIP_ASSERT("recv_udp must have an argument", arg != NULL);
yueee_yt 0:7766f6712673 157 conn = (struct netconn *)arg;
yueee_yt 0:7766f6712673 158 LWIP_ASSERT("recv_udp: recv for wrong pcb!", conn->pcb.udp == pcb);
yueee_yt 0:7766f6712673 159
yueee_yt 0:7766f6712673 160 #if LWIP_SO_RCVBUF
yueee_yt 0:7766f6712673 161 SYS_ARCH_GET(conn->recv_avail, recv_avail);
yueee_yt 0:7766f6712673 162 if ((conn == NULL) || !sys_mbox_valid(&conn->recvmbox) ||
yueee_yt 0:7766f6712673 163 ((recv_avail + (int)(p->tot_len)) > conn->recv_bufsize)) {
yueee_yt 0:7766f6712673 164 #else /* LWIP_SO_RCVBUF */
yueee_yt 0:7766f6712673 165 if ((conn == NULL) || !sys_mbox_valid(&conn->recvmbox)) {
yueee_yt 0:7766f6712673 166 #endif /* LWIP_SO_RCVBUF */
yueee_yt 0:7766f6712673 167 pbuf_free(p);
yueee_yt 0:7766f6712673 168 return;
yueee_yt 0:7766f6712673 169 }
yueee_yt 0:7766f6712673 170
yueee_yt 0:7766f6712673 171 buf = (struct netbuf *)memp_malloc(MEMP_NETBUF);
yueee_yt 0:7766f6712673 172 if (buf == NULL) {
yueee_yt 0:7766f6712673 173 pbuf_free(p);
yueee_yt 0:7766f6712673 174 return;
yueee_yt 0:7766f6712673 175 } else {
yueee_yt 0:7766f6712673 176 buf->p = p;
yueee_yt 0:7766f6712673 177 buf->ptr = p;
yueee_yt 0:7766f6712673 178 ip_addr_set(&buf->addr, addr);
yueee_yt 0:7766f6712673 179 buf->port = port;
yueee_yt 0:7766f6712673 180 #if LWIP_NETBUF_RECVINFO
yueee_yt 0:7766f6712673 181 {
yueee_yt 0:7766f6712673 182 const struct ip_hdr* iphdr = ip_current_header();
yueee_yt 0:7766f6712673 183 /* get the UDP header - always in the first pbuf, ensured by udp_input */
yueee_yt 0:7766f6712673 184 const struct udp_hdr* udphdr = (void*)(((char*)iphdr) + IPH_LEN(iphdr));
yueee_yt 0:7766f6712673 185 #if LWIP_CHECKSUM_ON_COPY
yueee_yt 0:7766f6712673 186 buf->flags = NETBUF_FLAG_DESTADDR;
yueee_yt 0:7766f6712673 187 #endif /* LWIP_CHECKSUM_ON_COPY */
yueee_yt 0:7766f6712673 188 ip_addr_set(&buf->toaddr, ip_current_dest_addr());
yueee_yt 0:7766f6712673 189 buf->toport_chksum = udphdr->dest;
yueee_yt 0:7766f6712673 190 }
yueee_yt 0:7766f6712673 191 #endif /* LWIP_NETBUF_RECVINFO */
yueee_yt 0:7766f6712673 192 }
yueee_yt 0:7766f6712673 193
yueee_yt 0:7766f6712673 194 len = p->tot_len;
yueee_yt 0:7766f6712673 195 if (sys_mbox_trypost(&conn->recvmbox, buf) != ERR_OK) {
yueee_yt 0:7766f6712673 196 netbuf_delete(buf);
yueee_yt 0:7766f6712673 197 return;
yueee_yt 0:7766f6712673 198 } else {
yueee_yt 0:7766f6712673 199 #if LWIP_SO_RCVBUF
yueee_yt 0:7766f6712673 200 SYS_ARCH_INC(conn->recv_avail, len);
yueee_yt 0:7766f6712673 201 #endif /* LWIP_SO_RCVBUF */
yueee_yt 0:7766f6712673 202 /* Register event with callback */
yueee_yt 0:7766f6712673 203 API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
yueee_yt 0:7766f6712673 204 }
yueee_yt 0:7766f6712673 205 }
yueee_yt 0:7766f6712673 206 #endif /* LWIP_UDP */
yueee_yt 0:7766f6712673 207
yueee_yt 0:7766f6712673 208 #if LWIP_TCP
yueee_yt 0:7766f6712673 209 /**
yueee_yt 0:7766f6712673 210 * Receive callback function for TCP netconns.
yueee_yt 0:7766f6712673 211 * Posts the packet to conn->recvmbox, but doesn't delete it on errors.
yueee_yt 0:7766f6712673 212 *
yueee_yt 0:7766f6712673 213 * @see tcp.h (struct tcp_pcb.recv) for parameters and return value
yueee_yt 0:7766f6712673 214 */
yueee_yt 0:7766f6712673 215 static err_t
yueee_yt 0:7766f6712673 216 recv_tcp(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err)
yueee_yt 0:7766f6712673 217 {
yueee_yt 0:7766f6712673 218 struct netconn *conn;
yueee_yt 0:7766f6712673 219 u16_t len;
yueee_yt 0:7766f6712673 220
yueee_yt 0:7766f6712673 221 LWIP_UNUSED_ARG(pcb);
yueee_yt 0:7766f6712673 222 LWIP_ASSERT("recv_tcp must have a pcb argument", pcb != NULL);
yueee_yt 0:7766f6712673 223 LWIP_ASSERT("recv_tcp must have an argument", arg != NULL);
yueee_yt 0:7766f6712673 224 conn = (struct netconn *)arg;
yueee_yt 0:7766f6712673 225 LWIP_ASSERT("recv_tcp: recv for wrong pcb!", conn->pcb.tcp == pcb);
yueee_yt 0:7766f6712673 226
yueee_yt 0:7766f6712673 227 if (conn == NULL) {
yueee_yt 0:7766f6712673 228 return ERR_VAL;
yueee_yt 0:7766f6712673 229 }
yueee_yt 0:7766f6712673 230 if (!sys_mbox_valid(&conn->recvmbox)) {
yueee_yt 0:7766f6712673 231 /* recvmbox already deleted */
yueee_yt 0:7766f6712673 232 if (p != NULL) {
yueee_yt 0:7766f6712673 233 tcp_recved(pcb, p->tot_len);
yueee_yt 0:7766f6712673 234 pbuf_free(p);
yueee_yt 0:7766f6712673 235 }
yueee_yt 0:7766f6712673 236 return ERR_OK;
yueee_yt 0:7766f6712673 237 }
yueee_yt 0:7766f6712673 238 /* Unlike for UDP or RAW pcbs, don't check for available space
yueee_yt 0:7766f6712673 239 using recv_avail since that could break the connection
yueee_yt 0:7766f6712673 240 (data is already ACKed) */
yueee_yt 0:7766f6712673 241
yueee_yt 0:7766f6712673 242 /* don't overwrite fatal errors! */
yueee_yt 0:7766f6712673 243 NETCONN_SET_SAFE_ERR(conn, err);
yueee_yt 0:7766f6712673 244
yueee_yt 0:7766f6712673 245 if (p != NULL) {
yueee_yt 0:7766f6712673 246 len = p->tot_len;
yueee_yt 0:7766f6712673 247 } else {
yueee_yt 0:7766f6712673 248 len = 0;
yueee_yt 0:7766f6712673 249 }
yueee_yt 0:7766f6712673 250
yueee_yt 0:7766f6712673 251 if (sys_mbox_trypost(&conn->recvmbox, p) != ERR_OK) {
yueee_yt 0:7766f6712673 252 /* don't deallocate p: it is presented to us later again from tcp_fasttmr! */
yueee_yt 0:7766f6712673 253 return ERR_MEM;
yueee_yt 0:7766f6712673 254 } else {
yueee_yt 0:7766f6712673 255 #if LWIP_SO_RCVBUF
yueee_yt 0:7766f6712673 256 SYS_ARCH_INC(conn->recv_avail, len);
yueee_yt 0:7766f6712673 257 #endif /* LWIP_SO_RCVBUF */
yueee_yt 0:7766f6712673 258 /* Register event with callback */
yueee_yt 0:7766f6712673 259 API_EVENT(conn, NETCONN_EVT_RCVPLUS, len);
yueee_yt 0:7766f6712673 260 }
yueee_yt 0:7766f6712673 261
yueee_yt 0:7766f6712673 262 return ERR_OK;
yueee_yt 0:7766f6712673 263 }
yueee_yt 0:7766f6712673 264
yueee_yt 0:7766f6712673 265 /**
yueee_yt 0:7766f6712673 266 * Poll callback function for TCP netconns.
yueee_yt 0:7766f6712673 267 * Wakes up an application thread that waits for a connection to close
yueee_yt 0:7766f6712673 268 * or data to be sent. The application thread then takes the
yueee_yt 0:7766f6712673 269 * appropriate action to go on.
yueee_yt 0:7766f6712673 270 *
yueee_yt 0:7766f6712673 271 * Signals the conn->sem.
yueee_yt 0:7766f6712673 272 * netconn_close waits for conn->sem if closing failed.
yueee_yt 0:7766f6712673 273 *
yueee_yt 0:7766f6712673 274 * @see tcp.h (struct tcp_pcb.poll) for parameters and return value
yueee_yt 0:7766f6712673 275 */
yueee_yt 0:7766f6712673 276 static err_t
yueee_yt 0:7766f6712673 277 poll_tcp(void *arg, struct tcp_pcb *pcb)
yueee_yt 0:7766f6712673 278 {
yueee_yt 0:7766f6712673 279 struct netconn *conn = (struct netconn *)arg;
yueee_yt 0:7766f6712673 280
yueee_yt 0:7766f6712673 281 LWIP_UNUSED_ARG(pcb);
yueee_yt 0:7766f6712673 282 LWIP_ASSERT("conn != NULL", (conn != NULL));
yueee_yt 0:7766f6712673 283
yueee_yt 0:7766f6712673 284 if (conn->state == NETCONN_WRITE) {
yueee_yt 0:7766f6712673 285 do_writemore(conn);
yueee_yt 0:7766f6712673 286 } else if (conn->state == NETCONN_CLOSE) {
yueee_yt 0:7766f6712673 287 do_close_internal(conn);
yueee_yt 0:7766f6712673 288 }
yueee_yt 0:7766f6712673 289 /* @todo: implement connect timeout here? */
yueee_yt 0:7766f6712673 290
yueee_yt 0:7766f6712673 291 /* Did a nonblocking write fail before? Then check available write-space. */
yueee_yt 0:7766f6712673 292 if (conn->flags & NETCONN_FLAG_CHECK_WRITESPACE) {
yueee_yt 0:7766f6712673 293 /* If the queued byte- or pbuf-count drops below the configured low-water limit,
yueee_yt 0:7766f6712673 294 let select mark this pcb as writable again. */
yueee_yt 0:7766f6712673 295 if ((conn->pcb.tcp != NULL) && (tcp_sndbuf(conn->pcb.tcp) > TCP_SNDLOWAT) &&
yueee_yt 0:7766f6712673 296 (tcp_sndqueuelen(conn->pcb.tcp) < TCP_SNDQUEUELOWAT)) {
yueee_yt 0:7766f6712673 297 conn->flags &= ~NETCONN_FLAG_CHECK_WRITESPACE;
yueee_yt 0:7766f6712673 298 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
yueee_yt 0:7766f6712673 299 }
yueee_yt 0:7766f6712673 300 }
yueee_yt 0:7766f6712673 301
yueee_yt 0:7766f6712673 302 return ERR_OK;
yueee_yt 0:7766f6712673 303 }
yueee_yt 0:7766f6712673 304
yueee_yt 0:7766f6712673 305 /**
yueee_yt 0:7766f6712673 306 * Sent callback function for TCP netconns.
yueee_yt 0:7766f6712673 307 * Signals the conn->sem and calls API_EVENT.
yueee_yt 0:7766f6712673 308 * netconn_write waits for conn->sem if send buffer is low.
yueee_yt 0:7766f6712673 309 *
yueee_yt 0:7766f6712673 310 * @see tcp.h (struct tcp_pcb.sent) for parameters and return value
yueee_yt 0:7766f6712673 311 */
yueee_yt 0:7766f6712673 312 static err_t
yueee_yt 0:7766f6712673 313 sent_tcp(void *arg, struct tcp_pcb *pcb, u16_t len)
yueee_yt 0:7766f6712673 314 {
yueee_yt 0:7766f6712673 315 struct netconn *conn = (struct netconn *)arg;
yueee_yt 0:7766f6712673 316
yueee_yt 0:7766f6712673 317 LWIP_UNUSED_ARG(pcb);
yueee_yt 0:7766f6712673 318 LWIP_ASSERT("conn != NULL", (conn != NULL));
yueee_yt 0:7766f6712673 319
yueee_yt 0:7766f6712673 320 if (conn->state == NETCONN_WRITE) {
yueee_yt 0:7766f6712673 321 do_writemore(conn);
yueee_yt 0:7766f6712673 322 } else if (conn->state == NETCONN_CLOSE) {
yueee_yt 0:7766f6712673 323 do_close_internal(conn);
yueee_yt 0:7766f6712673 324 }
yueee_yt 0:7766f6712673 325
yueee_yt 0:7766f6712673 326 if (conn) {
yueee_yt 0:7766f6712673 327 /* If the queued byte- or pbuf-count drops below the configured low-water limit,
yueee_yt 0:7766f6712673 328 let select mark this pcb as writable again. */
yueee_yt 0:7766f6712673 329 if ((conn->pcb.tcp != NULL) && (tcp_sndbuf(conn->pcb.tcp) > TCP_SNDLOWAT) &&
yueee_yt 0:7766f6712673 330 (tcp_sndqueuelen(conn->pcb.tcp) < TCP_SNDQUEUELOWAT)) {
yueee_yt 0:7766f6712673 331 conn->flags &= ~NETCONN_FLAG_CHECK_WRITESPACE;
yueee_yt 0:7766f6712673 332 API_EVENT(conn, NETCONN_EVT_SENDPLUS, len);
yueee_yt 0:7766f6712673 333 }
yueee_yt 0:7766f6712673 334 }
yueee_yt 0:7766f6712673 335
yueee_yt 0:7766f6712673 336 return ERR_OK;
yueee_yt 0:7766f6712673 337 }
yueee_yt 0:7766f6712673 338
yueee_yt 0:7766f6712673 339 /**
yueee_yt 0:7766f6712673 340 * Error callback function for TCP netconns.
yueee_yt 0:7766f6712673 341 * Signals conn->sem, posts to all conn mboxes and calls API_EVENT.
yueee_yt 0:7766f6712673 342 * The application thread has then to decide what to do.
yueee_yt 0:7766f6712673 343 *
yueee_yt 0:7766f6712673 344 * @see tcp.h (struct tcp_pcb.err) for parameters
yueee_yt 0:7766f6712673 345 */
yueee_yt 0:7766f6712673 346 static void
yueee_yt 0:7766f6712673 347 err_tcp(void *arg, err_t err)
yueee_yt 0:7766f6712673 348 {
yueee_yt 0:7766f6712673 349 struct netconn *conn;
yueee_yt 0:7766f6712673 350 enum netconn_state old_state;
yueee_yt 0:7766f6712673 351 SYS_ARCH_DECL_PROTECT(lev);
yueee_yt 0:7766f6712673 352
yueee_yt 0:7766f6712673 353 conn = (struct netconn *)arg;
yueee_yt 0:7766f6712673 354 LWIP_ASSERT("conn != NULL", (conn != NULL));
yueee_yt 0:7766f6712673 355
yueee_yt 0:7766f6712673 356 conn->pcb.tcp = NULL;
yueee_yt 0:7766f6712673 357
yueee_yt 0:7766f6712673 358 /* no check since this is always fatal! */
yueee_yt 0:7766f6712673 359 SYS_ARCH_PROTECT(lev);
yueee_yt 0:7766f6712673 360 conn->last_err = err;
yueee_yt 0:7766f6712673 361 SYS_ARCH_UNPROTECT(lev);
yueee_yt 0:7766f6712673 362
yueee_yt 0:7766f6712673 363 /* reset conn->state now before waking up other threads */
yueee_yt 0:7766f6712673 364 old_state = conn->state;
yueee_yt 0:7766f6712673 365 conn->state = NETCONN_NONE;
yueee_yt 0:7766f6712673 366
yueee_yt 0:7766f6712673 367 /* Notify the user layer about a connection error. Used to signal
yueee_yt 0:7766f6712673 368 select. */
yueee_yt 0:7766f6712673 369 API_EVENT(conn, NETCONN_EVT_ERROR, 0);
yueee_yt 0:7766f6712673 370 /* Try to release selects pending on 'read' or 'write', too.
yueee_yt 0:7766f6712673 371 They will get an error if they actually try to read or write. */
yueee_yt 0:7766f6712673 372 API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
yueee_yt 0:7766f6712673 373 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
yueee_yt 0:7766f6712673 374
yueee_yt 0:7766f6712673 375 /* pass NULL-message to recvmbox to wake up pending recv */
yueee_yt 0:7766f6712673 376 if (sys_mbox_valid(&conn->recvmbox)) {
yueee_yt 0:7766f6712673 377 /* use trypost to prevent deadlock */
yueee_yt 0:7766f6712673 378 sys_mbox_trypost(&conn->recvmbox, NULL);
yueee_yt 0:7766f6712673 379 }
yueee_yt 0:7766f6712673 380 /* pass NULL-message to acceptmbox to wake up pending accept */
yueee_yt 0:7766f6712673 381 if (sys_mbox_valid(&conn->acceptmbox)) {
yueee_yt 0:7766f6712673 382 /* use trypost to preven deadlock */
yueee_yt 0:7766f6712673 383 sys_mbox_trypost(&conn->acceptmbox, NULL);
yueee_yt 0:7766f6712673 384 }
yueee_yt 0:7766f6712673 385
yueee_yt 0:7766f6712673 386 if ((old_state == NETCONN_WRITE) || (old_state == NETCONN_CLOSE) ||
yueee_yt 0:7766f6712673 387 (old_state == NETCONN_CONNECT)) {
yueee_yt 0:7766f6712673 388 /* calling do_writemore/do_close_internal is not necessary
yueee_yt 0:7766f6712673 389 since the pcb has already been deleted! */
yueee_yt 0:7766f6712673 390 int was_nonblocking_connect = IN_NONBLOCKING_CONNECT(conn);
yueee_yt 0:7766f6712673 391 SET_NONBLOCKING_CONNECT(conn, 0);
yueee_yt 0:7766f6712673 392
yueee_yt 0:7766f6712673 393 if (!was_nonblocking_connect) {
yueee_yt 0:7766f6712673 394 /* set error return code */
yueee_yt 0:7766f6712673 395 LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
yueee_yt 0:7766f6712673 396 conn->current_msg->err = err;
yueee_yt 0:7766f6712673 397 conn->current_msg = NULL;
yueee_yt 0:7766f6712673 398 /* wake up the waiting task */
yueee_yt 0:7766f6712673 399 sys_sem_signal(&conn->op_completed);
yueee_yt 0:7766f6712673 400 }
yueee_yt 0:7766f6712673 401 } else {
yueee_yt 0:7766f6712673 402 LWIP_ASSERT("conn->current_msg == NULL", conn->current_msg == NULL);
yueee_yt 0:7766f6712673 403 }
yueee_yt 0:7766f6712673 404 }
yueee_yt 0:7766f6712673 405
yueee_yt 0:7766f6712673 406 /**
yueee_yt 0:7766f6712673 407 * Setup a tcp_pcb with the correct callback function pointers
yueee_yt 0:7766f6712673 408 * and their arguments.
yueee_yt 0:7766f6712673 409 *
yueee_yt 0:7766f6712673 410 * @param conn the TCP netconn to setup
yueee_yt 0:7766f6712673 411 */
yueee_yt 0:7766f6712673 412 static void
yueee_yt 0:7766f6712673 413 setup_tcp(struct netconn *conn)
yueee_yt 0:7766f6712673 414 {
yueee_yt 0:7766f6712673 415 struct tcp_pcb *pcb;
yueee_yt 0:7766f6712673 416
yueee_yt 0:7766f6712673 417 pcb = conn->pcb.tcp;
yueee_yt 0:7766f6712673 418 tcp_arg(pcb, conn);
yueee_yt 0:7766f6712673 419 tcp_recv(pcb, recv_tcp);
yueee_yt 0:7766f6712673 420 tcp_sent(pcb, sent_tcp);
yueee_yt 0:7766f6712673 421 tcp_poll(pcb, poll_tcp, 4);
yueee_yt 0:7766f6712673 422 tcp_err(pcb, err_tcp);
yueee_yt 0:7766f6712673 423 }
yueee_yt 0:7766f6712673 424
yueee_yt 0:7766f6712673 425 /**
yueee_yt 0:7766f6712673 426 * Accept callback function for TCP netconns.
yueee_yt 0:7766f6712673 427 * Allocates a new netconn and posts that to conn->acceptmbox.
yueee_yt 0:7766f6712673 428 *
yueee_yt 0:7766f6712673 429 * @see tcp.h (struct tcp_pcb_listen.accept) for parameters and return value
yueee_yt 0:7766f6712673 430 */
yueee_yt 0:7766f6712673 431 static err_t
yueee_yt 0:7766f6712673 432 accept_function(void *arg, struct tcp_pcb *newpcb, err_t err)
yueee_yt 0:7766f6712673 433 {
yueee_yt 0:7766f6712673 434 struct netconn *newconn;
yueee_yt 0:7766f6712673 435 struct netconn *conn = (struct netconn *)arg;
yueee_yt 0:7766f6712673 436
yueee_yt 0:7766f6712673 437 LWIP_DEBUGF(API_MSG_DEBUG, ("accept_function: newpcb->tate: %s\n", tcp_debug_state_str(newpcb->state)));
yueee_yt 0:7766f6712673 438
yueee_yt 0:7766f6712673 439 if (!sys_mbox_valid(&conn->acceptmbox)) {
yueee_yt 0:7766f6712673 440 LWIP_DEBUGF(API_MSG_DEBUG, ("accept_function: acceptmbox already deleted\n"));
yueee_yt 0:7766f6712673 441 return ERR_VAL;
yueee_yt 0:7766f6712673 442 }
yueee_yt 0:7766f6712673 443
yueee_yt 0:7766f6712673 444 /* We have to set the callback here even though
yueee_yt 0:7766f6712673 445 * the new socket is unknown. conn->socket is marked as -1. */
yueee_yt 0:7766f6712673 446 newconn = netconn_alloc(conn->type, conn->callback);
yueee_yt 0:7766f6712673 447 if (newconn == NULL) {
yueee_yt 0:7766f6712673 448 return ERR_MEM;
yueee_yt 0:7766f6712673 449 }
yueee_yt 0:7766f6712673 450 newconn->pcb.tcp = newpcb;
yueee_yt 0:7766f6712673 451 setup_tcp(newconn);
yueee_yt 0:7766f6712673 452 /* no protection: when creating the pcb, the netconn is not yet known
yueee_yt 0:7766f6712673 453 to the application thread */
yueee_yt 0:7766f6712673 454 newconn->last_err = err;
yueee_yt 0:7766f6712673 455
yueee_yt 0:7766f6712673 456 if (sys_mbox_trypost(&conn->acceptmbox, newconn) != ERR_OK) {
yueee_yt 0:7766f6712673 457 /* When returning != ERR_OK, the pcb is aborted in tcp_process(),
yueee_yt 0:7766f6712673 458 so do nothing here! */
yueee_yt 0:7766f6712673 459 newconn->pcb.tcp = NULL;
yueee_yt 0:7766f6712673 460 /* no need to drain since we know the recvmbox is empty. */
yueee_yt 0:7766f6712673 461 sys_mbox_free(&newconn->recvmbox);
yueee_yt 0:7766f6712673 462 sys_mbox_set_invalid(&newconn->recvmbox);
yueee_yt 0:7766f6712673 463 netconn_free(newconn);
yueee_yt 0:7766f6712673 464 return ERR_MEM;
yueee_yt 0:7766f6712673 465 } else {
yueee_yt 0:7766f6712673 466 /* Register event with callback */
yueee_yt 0:7766f6712673 467 API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
yueee_yt 0:7766f6712673 468 }
yueee_yt 0:7766f6712673 469
yueee_yt 0:7766f6712673 470 return ERR_OK;
yueee_yt 0:7766f6712673 471 }
yueee_yt 0:7766f6712673 472 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 473
yueee_yt 0:7766f6712673 474 /**
yueee_yt 0:7766f6712673 475 * Create a new pcb of a specific type.
yueee_yt 0:7766f6712673 476 * Called from do_newconn().
yueee_yt 0:7766f6712673 477 *
yueee_yt 0:7766f6712673 478 * @param msg the api_msg_msg describing the connection type
yueee_yt 0:7766f6712673 479 * @return msg->conn->err, but the return value is currently ignored
yueee_yt 0:7766f6712673 480 */
yueee_yt 0:7766f6712673 481 static void
yueee_yt 0:7766f6712673 482 pcb_new(struct api_msg_msg *msg)
yueee_yt 0:7766f6712673 483 {
yueee_yt 0:7766f6712673 484 LWIP_ASSERT("pcb_new: pcb already allocated", msg->conn->pcb.tcp == NULL);
yueee_yt 0:7766f6712673 485
yueee_yt 0:7766f6712673 486 /* Allocate a PCB for this connection */
yueee_yt 0:7766f6712673 487 switch(NETCONNTYPE_GROUP(msg->conn->type)) {
yueee_yt 0:7766f6712673 488 #if LWIP_RAW
yueee_yt 0:7766f6712673 489 case NETCONN_RAW:
yueee_yt 0:7766f6712673 490 msg->conn->pcb.raw = raw_new(msg->msg.n.proto);
yueee_yt 0:7766f6712673 491 if(msg->conn->pcb.raw == NULL) {
yueee_yt 0:7766f6712673 492 msg->err = ERR_MEM;
yueee_yt 0:7766f6712673 493 break;
yueee_yt 0:7766f6712673 494 }
yueee_yt 0:7766f6712673 495 raw_recv(msg->conn->pcb.raw, recv_raw, msg->conn);
yueee_yt 0:7766f6712673 496 break;
yueee_yt 0:7766f6712673 497 #endif /* LWIP_RAW */
yueee_yt 0:7766f6712673 498 #if LWIP_UDP
yueee_yt 0:7766f6712673 499 case NETCONN_UDP:
yueee_yt 0:7766f6712673 500 msg->conn->pcb.udp = udp_new();
yueee_yt 0:7766f6712673 501 if(msg->conn->pcb.udp == NULL) {
yueee_yt 0:7766f6712673 502 msg->err = ERR_MEM;
yueee_yt 0:7766f6712673 503 break;
yueee_yt 0:7766f6712673 504 }
yueee_yt 0:7766f6712673 505 #if LWIP_UDPLITE
yueee_yt 0:7766f6712673 506 if (msg->conn->type==NETCONN_UDPLITE) {
yueee_yt 0:7766f6712673 507 udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_UDPLITE);
yueee_yt 0:7766f6712673 508 }
yueee_yt 0:7766f6712673 509 #endif /* LWIP_UDPLITE */
yueee_yt 0:7766f6712673 510 if (msg->conn->type==NETCONN_UDPNOCHKSUM) {
yueee_yt 0:7766f6712673 511 udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_NOCHKSUM);
yueee_yt 0:7766f6712673 512 }
yueee_yt 0:7766f6712673 513 udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn);
yueee_yt 0:7766f6712673 514 break;
yueee_yt 0:7766f6712673 515 #endif /* LWIP_UDP */
yueee_yt 0:7766f6712673 516 #if LWIP_TCP
yueee_yt 0:7766f6712673 517 case NETCONN_TCP:
yueee_yt 0:7766f6712673 518 msg->conn->pcb.tcp = tcp_new();
yueee_yt 0:7766f6712673 519 if(msg->conn->pcb.tcp == NULL) {
yueee_yt 0:7766f6712673 520 msg->err = ERR_MEM;
yueee_yt 0:7766f6712673 521 break;
yueee_yt 0:7766f6712673 522 }
yueee_yt 0:7766f6712673 523 setup_tcp(msg->conn);
yueee_yt 0:7766f6712673 524 break;
yueee_yt 0:7766f6712673 525 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 526 default:
yueee_yt 0:7766f6712673 527 /* Unsupported netconn type, e.g. protocol disabled */
yueee_yt 0:7766f6712673 528 msg->err = ERR_VAL;
yueee_yt 0:7766f6712673 529 break;
yueee_yt 0:7766f6712673 530 }
yueee_yt 0:7766f6712673 531 }
yueee_yt 0:7766f6712673 532
yueee_yt 0:7766f6712673 533 /**
yueee_yt 0:7766f6712673 534 * Create a new pcb of a specific type inside a netconn.
yueee_yt 0:7766f6712673 535 * Called from netconn_new_with_proto_and_callback.
yueee_yt 0:7766f6712673 536 *
yueee_yt 0:7766f6712673 537 * @param msg the api_msg_msg describing the connection type
yueee_yt 0:7766f6712673 538 */
yueee_yt 0:7766f6712673 539 void
yueee_yt 0:7766f6712673 540 do_newconn(struct api_msg_msg *msg)
yueee_yt 0:7766f6712673 541 {
yueee_yt 0:7766f6712673 542 msg->err = ERR_OK;
yueee_yt 0:7766f6712673 543 if(msg->conn->pcb.tcp == NULL) {
yueee_yt 0:7766f6712673 544 pcb_new(msg);
yueee_yt 0:7766f6712673 545 }
yueee_yt 0:7766f6712673 546 /* Else? This "new" connection already has a PCB allocated. */
yueee_yt 0:7766f6712673 547 /* Is this an error condition? Should it be deleted? */
yueee_yt 0:7766f6712673 548 /* We currently just are happy and return. */
yueee_yt 0:7766f6712673 549
yueee_yt 0:7766f6712673 550 TCPIP_APIMSG_ACK(msg);
yueee_yt 0:7766f6712673 551 }
yueee_yt 0:7766f6712673 552
yueee_yt 0:7766f6712673 553 /**
yueee_yt 0:7766f6712673 554 * Create a new netconn (of a specific type) that has a callback function.
yueee_yt 0:7766f6712673 555 * The corresponding pcb is NOT created!
yueee_yt 0:7766f6712673 556 *
yueee_yt 0:7766f6712673 557 * @param t the type of 'connection' to create (@see enum netconn_type)
yueee_yt 0:7766f6712673 558 * @param proto the IP protocol for RAW IP pcbs
yueee_yt 0:7766f6712673 559 * @param callback a function to call on status changes (RX available, TX'ed)
yueee_yt 0:7766f6712673 560 * @return a newly allocated struct netconn or
yueee_yt 0:7766f6712673 561 * NULL on memory error
yueee_yt 0:7766f6712673 562 */
yueee_yt 0:7766f6712673 563 struct netconn*
yueee_yt 0:7766f6712673 564 netconn_alloc(enum netconn_type t, netconn_callback callback)
yueee_yt 0:7766f6712673 565 {
yueee_yt 0:7766f6712673 566 struct netconn *conn;
yueee_yt 0:7766f6712673 567 int size;
yueee_yt 0:7766f6712673 568
yueee_yt 0:7766f6712673 569 conn = (struct netconn *)memp_malloc(MEMP_NETCONN);
yueee_yt 0:7766f6712673 570 if (conn == NULL) {
yueee_yt 0:7766f6712673 571 return NULL;
yueee_yt 0:7766f6712673 572 }
yueee_yt 0:7766f6712673 573
yueee_yt 0:7766f6712673 574 conn->last_err = ERR_OK;
yueee_yt 0:7766f6712673 575 conn->type = t;
yueee_yt 0:7766f6712673 576 conn->pcb.tcp = NULL;
yueee_yt 0:7766f6712673 577
yueee_yt 0:7766f6712673 578 #if (DEFAULT_RAW_RECVMBOX_SIZE == DEFAULT_UDP_RECVMBOX_SIZE) && \
yueee_yt 0:7766f6712673 579 (DEFAULT_RAW_RECVMBOX_SIZE == DEFAULT_TCP_RECVMBOX_SIZE)
yueee_yt 0:7766f6712673 580 size = DEFAULT_RAW_RECVMBOX_SIZE;
yueee_yt 0:7766f6712673 581 #else
yueee_yt 0:7766f6712673 582 switch(NETCONNTYPE_GROUP(t)) {
yueee_yt 0:7766f6712673 583 #if LWIP_RAW
yueee_yt 0:7766f6712673 584 case NETCONN_RAW:
yueee_yt 0:7766f6712673 585 size = DEFAULT_RAW_RECVMBOX_SIZE;
yueee_yt 0:7766f6712673 586 break;
yueee_yt 0:7766f6712673 587 #endif /* LWIP_RAW */
yueee_yt 0:7766f6712673 588 #if LWIP_UDP
yueee_yt 0:7766f6712673 589 case NETCONN_UDP:
yueee_yt 0:7766f6712673 590 size = DEFAULT_UDP_RECVMBOX_SIZE;
yueee_yt 0:7766f6712673 591 break;
yueee_yt 0:7766f6712673 592 #endif /* LWIP_UDP */
yueee_yt 0:7766f6712673 593 #if LWIP_TCP
yueee_yt 0:7766f6712673 594 case NETCONN_TCP:
yueee_yt 0:7766f6712673 595 size = DEFAULT_TCP_RECVMBOX_SIZE;
yueee_yt 0:7766f6712673 596 break;
yueee_yt 0:7766f6712673 597 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 598 default:
yueee_yt 0:7766f6712673 599 LWIP_ASSERT("netconn_alloc: undefined netconn_type", 0);
yueee_yt 0:7766f6712673 600 break;
yueee_yt 0:7766f6712673 601 }
yueee_yt 0:7766f6712673 602 #endif
yueee_yt 0:7766f6712673 603
yueee_yt 0:7766f6712673 604 if (sys_sem_new(&conn->op_completed, 0) != ERR_OK) {
yueee_yt 0:7766f6712673 605 memp_free(MEMP_NETCONN, conn);
yueee_yt 0:7766f6712673 606 return NULL;
yueee_yt 0:7766f6712673 607 }
yueee_yt 0:7766f6712673 608 if (sys_mbox_new(&conn->recvmbox, size) != ERR_OK) {
yueee_yt 0:7766f6712673 609 sys_sem_free(&conn->op_completed);
yueee_yt 0:7766f6712673 610 memp_free(MEMP_NETCONN, conn);
yueee_yt 0:7766f6712673 611 return NULL;
yueee_yt 0:7766f6712673 612 }
yueee_yt 0:7766f6712673 613
yueee_yt 0:7766f6712673 614 #if LWIP_TCP
yueee_yt 0:7766f6712673 615 sys_mbox_set_invalid(&conn->acceptmbox);
yueee_yt 0:7766f6712673 616 #endif
yueee_yt 0:7766f6712673 617 conn->state = NETCONN_NONE;
yueee_yt 0:7766f6712673 618 #if LWIP_SOCKET
yueee_yt 0:7766f6712673 619 /* initialize socket to -1 since 0 is a valid socket */
yueee_yt 0:7766f6712673 620 conn->socket = -1;
yueee_yt 0:7766f6712673 621 #endif /* LWIP_SOCKET */
yueee_yt 0:7766f6712673 622 conn->callback = callback;
yueee_yt 0:7766f6712673 623 #if LWIP_TCP
yueee_yt 0:7766f6712673 624 conn->current_msg = NULL;
yueee_yt 0:7766f6712673 625 conn->write_offset = 0;
yueee_yt 0:7766f6712673 626 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 627 #if LWIP_SO_RCVTIMEO
yueee_yt 0:7766f6712673 628 conn->recv_timeout = 0;
yueee_yt 0:7766f6712673 629 #endif /* LWIP_SO_RCVTIMEO */
yueee_yt 0:7766f6712673 630 #if LWIP_SO_RCVBUF
yueee_yt 0:7766f6712673 631 conn->recv_bufsize = RECV_BUFSIZE_DEFAULT;
yueee_yt 0:7766f6712673 632 conn->recv_avail = 0;
yueee_yt 0:7766f6712673 633 #endif /* LWIP_SO_RCVBUF */
yueee_yt 0:7766f6712673 634 conn->flags = 0;
yueee_yt 0:7766f6712673 635 return conn;
yueee_yt 0:7766f6712673 636 }
yueee_yt 0:7766f6712673 637
yueee_yt 0:7766f6712673 638 /**
yueee_yt 0:7766f6712673 639 * Delete a netconn and all its resources.
yueee_yt 0:7766f6712673 640 * The pcb is NOT freed (since we might not be in the right thread context do this).
yueee_yt 0:7766f6712673 641 *
yueee_yt 0:7766f6712673 642 * @param conn the netconn to free
yueee_yt 0:7766f6712673 643 */
yueee_yt 0:7766f6712673 644 void
yueee_yt 0:7766f6712673 645 netconn_free(struct netconn *conn)
yueee_yt 0:7766f6712673 646 {
yueee_yt 0:7766f6712673 647 LWIP_ASSERT("PCB must be deallocated outside this function", conn->pcb.tcp == NULL);
yueee_yt 0:7766f6712673 648 LWIP_ASSERT("recvmbox must be deallocated before calling this function",
yueee_yt 0:7766f6712673 649 !sys_mbox_valid(&conn->recvmbox));
yueee_yt 0:7766f6712673 650 #if LWIP_TCP
yueee_yt 0:7766f6712673 651 LWIP_ASSERT("acceptmbox must be deallocated before calling this function",
yueee_yt 0:7766f6712673 652 !sys_mbox_valid(&conn->acceptmbox));
yueee_yt 0:7766f6712673 653 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 654
yueee_yt 0:7766f6712673 655 sys_sem_free(&conn->op_completed);
yueee_yt 0:7766f6712673 656 sys_sem_set_invalid(&conn->op_completed);
yueee_yt 0:7766f6712673 657
yueee_yt 0:7766f6712673 658 memp_free(MEMP_NETCONN, conn);
yueee_yt 0:7766f6712673 659 }
yueee_yt 0:7766f6712673 660
yueee_yt 0:7766f6712673 661 /**
yueee_yt 0:7766f6712673 662 * Delete rcvmbox and acceptmbox of a netconn and free the left-over data in
yueee_yt 0:7766f6712673 663 * these mboxes
yueee_yt 0:7766f6712673 664 *
yueee_yt 0:7766f6712673 665 * @param conn the netconn to free
yueee_yt 0:7766f6712673 666 * @bytes_drained bytes drained from recvmbox
yueee_yt 0:7766f6712673 667 * @accepts_drained pending connections drained from acceptmbox
yueee_yt 0:7766f6712673 668 */
yueee_yt 0:7766f6712673 669 static void
yueee_yt 0:7766f6712673 670 netconn_drain(struct netconn *conn)
yueee_yt 0:7766f6712673 671 {
yueee_yt 0:7766f6712673 672 void *mem;
yueee_yt 0:7766f6712673 673 #if LWIP_TCP
yueee_yt 0:7766f6712673 674 struct pbuf *p;
yueee_yt 0:7766f6712673 675 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 676
yueee_yt 0:7766f6712673 677 /* This runs in tcpip_thread, so we don't need to lock against rx packets */
yueee_yt 0:7766f6712673 678
yueee_yt 0:7766f6712673 679 /* Delete and drain the recvmbox. */
yueee_yt 0:7766f6712673 680 if (sys_mbox_valid(&conn->recvmbox)) {
yueee_yt 0:7766f6712673 681 while (sys_mbox_tryfetch(&conn->recvmbox, &mem) != SYS_MBOX_EMPTY) {
yueee_yt 0:7766f6712673 682 #if LWIP_TCP
yueee_yt 0:7766f6712673 683 if (conn->type == NETCONN_TCP) {
yueee_yt 0:7766f6712673 684 if(mem != NULL) {
yueee_yt 0:7766f6712673 685 p = (struct pbuf*)mem;
yueee_yt 0:7766f6712673 686 /* pcb might be set to NULL already by err_tcp() */
yueee_yt 0:7766f6712673 687 if (conn->pcb.tcp != NULL) {
yueee_yt 0:7766f6712673 688 tcp_recved(conn->pcb.tcp, p->tot_len);
yueee_yt 0:7766f6712673 689 }
yueee_yt 0:7766f6712673 690 pbuf_free(p);
yueee_yt 0:7766f6712673 691 }
yueee_yt 0:7766f6712673 692 } else
yueee_yt 0:7766f6712673 693 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 694 {
yueee_yt 0:7766f6712673 695 netbuf_delete((struct netbuf *)mem);
yueee_yt 0:7766f6712673 696 }
yueee_yt 0:7766f6712673 697 }
yueee_yt 0:7766f6712673 698 sys_mbox_free(&conn->recvmbox);
yueee_yt 0:7766f6712673 699 sys_mbox_set_invalid(&conn->recvmbox);
yueee_yt 0:7766f6712673 700 }
yueee_yt 0:7766f6712673 701
yueee_yt 0:7766f6712673 702 /* Delete and drain the acceptmbox. */
yueee_yt 0:7766f6712673 703 #if LWIP_TCP
yueee_yt 0:7766f6712673 704 if (sys_mbox_valid(&conn->acceptmbox)) {
yueee_yt 0:7766f6712673 705 while (sys_mbox_tryfetch(&conn->acceptmbox, &mem) != SYS_MBOX_EMPTY) {
yueee_yt 0:7766f6712673 706 struct netconn *newconn = (struct netconn *)mem;
yueee_yt 0:7766f6712673 707 /* Only tcp pcbs have an acceptmbox, so no need to check conn->type */
yueee_yt 0:7766f6712673 708 /* pcb might be set to NULL already by err_tcp() */
yueee_yt 0:7766f6712673 709 if (conn->pcb.tcp != NULL) {
yueee_yt 0:7766f6712673 710 tcp_accepted(conn->pcb.tcp);
yueee_yt 0:7766f6712673 711 }
yueee_yt 0:7766f6712673 712 /* drain recvmbox */
yueee_yt 0:7766f6712673 713 netconn_drain(newconn);
yueee_yt 0:7766f6712673 714 if (newconn->pcb.tcp != NULL) {
yueee_yt 0:7766f6712673 715 tcp_abort(newconn->pcb.tcp);
yueee_yt 0:7766f6712673 716 newconn->pcb.tcp = NULL;
yueee_yt 0:7766f6712673 717 }
yueee_yt 0:7766f6712673 718 netconn_free(newconn);
yueee_yt 0:7766f6712673 719 }
yueee_yt 0:7766f6712673 720 sys_mbox_free(&conn->acceptmbox);
yueee_yt 0:7766f6712673 721 sys_mbox_set_invalid(&conn->acceptmbox);
yueee_yt 0:7766f6712673 722 }
yueee_yt 0:7766f6712673 723 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 724 }
yueee_yt 0:7766f6712673 725
yueee_yt 0:7766f6712673 726 #if LWIP_TCP
yueee_yt 0:7766f6712673 727 /**
yueee_yt 0:7766f6712673 728 * Internal helper function to close a TCP netconn: since this sometimes
yueee_yt 0:7766f6712673 729 * doesn't work at the first attempt, this function is called from multiple
yueee_yt 0:7766f6712673 730 * places.
yueee_yt 0:7766f6712673 731 *
yueee_yt 0:7766f6712673 732 * @param conn the TCP netconn to close
yueee_yt 0:7766f6712673 733 */
yueee_yt 0:7766f6712673 734 static void
yueee_yt 0:7766f6712673 735 do_close_internal(struct netconn *conn)
yueee_yt 0:7766f6712673 736 {
yueee_yt 0:7766f6712673 737 err_t err;
yueee_yt 0:7766f6712673 738 u8_t shut, shut_rx, shut_tx, close;
yueee_yt 0:7766f6712673 739
yueee_yt 0:7766f6712673 740 LWIP_ASSERT("invalid conn", (conn != NULL));
yueee_yt 0:7766f6712673 741 LWIP_ASSERT("this is for tcp netconns only", (conn->type == NETCONN_TCP));
yueee_yt 0:7766f6712673 742 LWIP_ASSERT("conn must be in state NETCONN_CLOSE", (conn->state == NETCONN_CLOSE));
yueee_yt 0:7766f6712673 743 LWIP_ASSERT("pcb already closed", (conn->pcb.tcp != NULL));
yueee_yt 0:7766f6712673 744 LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
yueee_yt 0:7766f6712673 745
yueee_yt 0:7766f6712673 746 shut = conn->current_msg->msg.sd.shut;
yueee_yt 0:7766f6712673 747 shut_rx = shut & NETCONN_SHUT_RD;
yueee_yt 0:7766f6712673 748 shut_tx = shut & NETCONN_SHUT_WR;
yueee_yt 0:7766f6712673 749 /* shutting down both ends is the same as closing */
yueee_yt 0:7766f6712673 750 close = shut == NETCONN_SHUT_RDWR;
yueee_yt 0:7766f6712673 751
yueee_yt 0:7766f6712673 752 /* Set back some callback pointers */
yueee_yt 0:7766f6712673 753 if (close) {
yueee_yt 0:7766f6712673 754 tcp_arg(conn->pcb.tcp, NULL);
yueee_yt 0:7766f6712673 755 }
yueee_yt 0:7766f6712673 756 if (conn->pcb.tcp->state == LISTEN) {
yueee_yt 0:7766f6712673 757 tcp_accept(conn->pcb.tcp, NULL);
yueee_yt 0:7766f6712673 758 } else {
yueee_yt 0:7766f6712673 759 /* some callbacks have to be reset if tcp_close is not successful */
yueee_yt 0:7766f6712673 760 if (shut_rx) {
yueee_yt 0:7766f6712673 761 tcp_recv(conn->pcb.tcp, NULL);
yueee_yt 0:7766f6712673 762 tcp_accept(conn->pcb.tcp, NULL);
yueee_yt 0:7766f6712673 763 }
yueee_yt 0:7766f6712673 764 if (shut_tx) {
yueee_yt 0:7766f6712673 765 tcp_sent(conn->pcb.tcp, NULL);
yueee_yt 0:7766f6712673 766 }
yueee_yt 0:7766f6712673 767 if (close) {
yueee_yt 0:7766f6712673 768 tcp_poll(conn->pcb.tcp, NULL, 4);
yueee_yt 0:7766f6712673 769 tcp_err(conn->pcb.tcp, NULL);
yueee_yt 0:7766f6712673 770 }
yueee_yt 0:7766f6712673 771 }
yueee_yt 0:7766f6712673 772 /* Try to close the connection */
yueee_yt 0:7766f6712673 773 if (shut == NETCONN_SHUT_RDWR) {
yueee_yt 0:7766f6712673 774 err = tcp_close(conn->pcb.tcp);
yueee_yt 0:7766f6712673 775 } else {
yueee_yt 0:7766f6712673 776 err = tcp_shutdown(conn->pcb.tcp, shut & NETCONN_SHUT_RD, shut & NETCONN_SHUT_WR);
yueee_yt 0:7766f6712673 777 }
yueee_yt 0:7766f6712673 778 if (err == ERR_OK) {
yueee_yt 0:7766f6712673 779 /* Closing succeeded */
yueee_yt 0:7766f6712673 780 conn->current_msg->err = ERR_OK;
yueee_yt 0:7766f6712673 781 conn->current_msg = NULL;
yueee_yt 0:7766f6712673 782 conn->state = NETCONN_NONE;
yueee_yt 0:7766f6712673 783 /* Set back some callback pointers as conn is going away */
yueee_yt 0:7766f6712673 784 conn->pcb.tcp = NULL;
yueee_yt 0:7766f6712673 785 /* Trigger select() in socket layer. Make sure everybody notices activity
yueee_yt 0:7766f6712673 786 on the connection, error first! */
yueee_yt 0:7766f6712673 787 if (close) {
yueee_yt 0:7766f6712673 788 API_EVENT(conn, NETCONN_EVT_ERROR, 0);
yueee_yt 0:7766f6712673 789 }
yueee_yt 0:7766f6712673 790 if (shut_rx) {
yueee_yt 0:7766f6712673 791 API_EVENT(conn, NETCONN_EVT_RCVPLUS, 0);
yueee_yt 0:7766f6712673 792 }
yueee_yt 0:7766f6712673 793 if (shut_tx) {
yueee_yt 0:7766f6712673 794 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
yueee_yt 0:7766f6712673 795 }
yueee_yt 0:7766f6712673 796 /* wake up the application task */
yueee_yt 0:7766f6712673 797 sys_sem_signal(&conn->op_completed);
yueee_yt 0:7766f6712673 798 } else {
yueee_yt 0:7766f6712673 799 /* Closing failed, restore some of the callbacks */
yueee_yt 0:7766f6712673 800 /* Closing of listen pcb will never fail! */
yueee_yt 0:7766f6712673 801 LWIP_ASSERT("Closing a listen pcb may not fail!", (conn->pcb.tcp->state != LISTEN));
yueee_yt 0:7766f6712673 802 tcp_sent(conn->pcb.tcp, sent_tcp);
yueee_yt 0:7766f6712673 803 tcp_poll(conn->pcb.tcp, poll_tcp, 4);
yueee_yt 0:7766f6712673 804 tcp_err(conn->pcb.tcp, err_tcp);
yueee_yt 0:7766f6712673 805 tcp_arg(conn->pcb.tcp, conn);
yueee_yt 0:7766f6712673 806 /* don't restore recv callback: we don't want to receive any more data */
yueee_yt 0:7766f6712673 807 }
yueee_yt 0:7766f6712673 808 /* If closing didn't succeed, we get called again either
yueee_yt 0:7766f6712673 809 from poll_tcp or from sent_tcp */
yueee_yt 0:7766f6712673 810 }
yueee_yt 0:7766f6712673 811 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 812
yueee_yt 0:7766f6712673 813 /**
yueee_yt 0:7766f6712673 814 * Delete the pcb inside a netconn.
yueee_yt 0:7766f6712673 815 * Called from netconn_delete.
yueee_yt 0:7766f6712673 816 *
yueee_yt 0:7766f6712673 817 * @param msg the api_msg_msg pointing to the connection
yueee_yt 0:7766f6712673 818 */
yueee_yt 0:7766f6712673 819 void
yueee_yt 0:7766f6712673 820 do_delconn(struct api_msg_msg *msg)
yueee_yt 0:7766f6712673 821 {
yueee_yt 0:7766f6712673 822 /* @todo TCP: abort running write/connect? */
yueee_yt 0:7766f6712673 823 if ((msg->conn->state != NETCONN_NONE) &&
yueee_yt 0:7766f6712673 824 (msg->conn->state != NETCONN_LISTEN) &&
yueee_yt 0:7766f6712673 825 (msg->conn->state != NETCONN_CONNECT)) {
yueee_yt 0:7766f6712673 826 /* this only happens for TCP netconns */
yueee_yt 0:7766f6712673 827 LWIP_ASSERT("msg->conn->type == NETCONN_TCP", msg->conn->type == NETCONN_TCP);
yueee_yt 0:7766f6712673 828 msg->err = ERR_INPROGRESS;
yueee_yt 0:7766f6712673 829 } else {
yueee_yt 0:7766f6712673 830 LWIP_ASSERT("blocking connect in progress",
yueee_yt 0:7766f6712673 831 (msg->conn->state != NETCONN_CONNECT) || IN_NONBLOCKING_CONNECT(msg->conn));
yueee_yt 0:7766f6712673 832 /* Drain and delete mboxes */
yueee_yt 0:7766f6712673 833 netconn_drain(msg->conn);
yueee_yt 0:7766f6712673 834
yueee_yt 0:7766f6712673 835 if (msg->conn->pcb.tcp != NULL) {
yueee_yt 0:7766f6712673 836
yueee_yt 0:7766f6712673 837 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
yueee_yt 0:7766f6712673 838 #if LWIP_RAW
yueee_yt 0:7766f6712673 839 case NETCONN_RAW:
yueee_yt 0:7766f6712673 840 raw_remove(msg->conn->pcb.raw);
yueee_yt 0:7766f6712673 841 break;
yueee_yt 0:7766f6712673 842 #endif /* LWIP_RAW */
yueee_yt 0:7766f6712673 843 #if LWIP_UDP
yueee_yt 0:7766f6712673 844 case NETCONN_UDP:
yueee_yt 0:7766f6712673 845 msg->conn->pcb.udp->recv_arg = NULL;
yueee_yt 0:7766f6712673 846 udp_remove(msg->conn->pcb.udp);
yueee_yt 0:7766f6712673 847 break;
yueee_yt 0:7766f6712673 848 #endif /* LWIP_UDP */
yueee_yt 0:7766f6712673 849 #if LWIP_TCP
yueee_yt 0:7766f6712673 850 case NETCONN_TCP:
yueee_yt 0:7766f6712673 851 LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
yueee_yt 0:7766f6712673 852 msg->conn->write_offset == 0);
yueee_yt 0:7766f6712673 853 msg->conn->state = NETCONN_CLOSE;
yueee_yt 0:7766f6712673 854 msg->msg.sd.shut = NETCONN_SHUT_RDWR;
yueee_yt 0:7766f6712673 855 msg->conn->current_msg = msg;
yueee_yt 0:7766f6712673 856 do_close_internal(msg->conn);
yueee_yt 0:7766f6712673 857 /* API_EVENT is called inside do_close_internal, before releasing
yueee_yt 0:7766f6712673 858 the application thread, so we can return at this point! */
yueee_yt 0:7766f6712673 859 return;
yueee_yt 0:7766f6712673 860 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 861 default:
yueee_yt 0:7766f6712673 862 break;
yueee_yt 0:7766f6712673 863 }
yueee_yt 0:7766f6712673 864 msg->conn->pcb.tcp = NULL;
yueee_yt 0:7766f6712673 865 }
yueee_yt 0:7766f6712673 866 /* tcp netconns don't come here! */
yueee_yt 0:7766f6712673 867
yueee_yt 0:7766f6712673 868 /* @todo: this lets select make the socket readable and writable,
yueee_yt 0:7766f6712673 869 which is wrong! errfd instead? */
yueee_yt 0:7766f6712673 870 API_EVENT(msg->conn, NETCONN_EVT_RCVPLUS, 0);
yueee_yt 0:7766f6712673 871 API_EVENT(msg->conn, NETCONN_EVT_SENDPLUS, 0);
yueee_yt 0:7766f6712673 872 }
yueee_yt 0:7766f6712673 873 if (sys_sem_valid(&msg->conn->op_completed)) {
yueee_yt 0:7766f6712673 874 sys_sem_signal(&msg->conn->op_completed);
yueee_yt 0:7766f6712673 875 }
yueee_yt 0:7766f6712673 876 }
yueee_yt 0:7766f6712673 877
yueee_yt 0:7766f6712673 878 /**
yueee_yt 0:7766f6712673 879 * Bind a pcb contained in a netconn
yueee_yt 0:7766f6712673 880 * Called from netconn_bind.
yueee_yt 0:7766f6712673 881 *
yueee_yt 0:7766f6712673 882 * @param msg the api_msg_msg pointing to the connection and containing
yueee_yt 0:7766f6712673 883 * the IP address and port to bind to
yueee_yt 0:7766f6712673 884 */
yueee_yt 0:7766f6712673 885 void
yueee_yt 0:7766f6712673 886 do_bind(struct api_msg_msg *msg)
yueee_yt 0:7766f6712673 887 {
yueee_yt 0:7766f6712673 888 if (ERR_IS_FATAL(msg->conn->last_err)) {
yueee_yt 0:7766f6712673 889 msg->err = msg->conn->last_err;
yueee_yt 0:7766f6712673 890 } else {
yueee_yt 0:7766f6712673 891 msg->err = ERR_VAL;
yueee_yt 0:7766f6712673 892 if (msg->conn->pcb.tcp != NULL) {
yueee_yt 0:7766f6712673 893 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
yueee_yt 0:7766f6712673 894 #if LWIP_RAW
yueee_yt 0:7766f6712673 895 case NETCONN_RAW:
yueee_yt 0:7766f6712673 896 msg->err = raw_bind(msg->conn->pcb.raw, msg->msg.bc.ipaddr);
yueee_yt 0:7766f6712673 897 break;
yueee_yt 0:7766f6712673 898 #endif /* LWIP_RAW */
yueee_yt 0:7766f6712673 899 #if LWIP_UDP
yueee_yt 0:7766f6712673 900 case NETCONN_UDP:
yueee_yt 0:7766f6712673 901 msg->err = udp_bind(msg->conn->pcb.udp, msg->msg.bc.ipaddr, msg->msg.bc.port);
yueee_yt 0:7766f6712673 902 break;
yueee_yt 0:7766f6712673 903 #endif /* LWIP_UDP */
yueee_yt 0:7766f6712673 904 #if LWIP_TCP
yueee_yt 0:7766f6712673 905 case NETCONN_TCP:
yueee_yt 0:7766f6712673 906 msg->err = tcp_bind(msg->conn->pcb.tcp, msg->msg.bc.ipaddr, msg->msg.bc.port);
yueee_yt 0:7766f6712673 907 break;
yueee_yt 0:7766f6712673 908 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 909 default:
yueee_yt 0:7766f6712673 910 break;
yueee_yt 0:7766f6712673 911 }
yueee_yt 0:7766f6712673 912 }
yueee_yt 0:7766f6712673 913 }
yueee_yt 0:7766f6712673 914 TCPIP_APIMSG_ACK(msg);
yueee_yt 0:7766f6712673 915 }
yueee_yt 0:7766f6712673 916
yueee_yt 0:7766f6712673 917 #if LWIP_TCP
yueee_yt 0:7766f6712673 918 /**
yueee_yt 0:7766f6712673 919 * TCP callback function if a connection (opened by tcp_connect/do_connect) has
yueee_yt 0:7766f6712673 920 * been established (or reset by the remote host).
yueee_yt 0:7766f6712673 921 *
yueee_yt 0:7766f6712673 922 * @see tcp.h (struct tcp_pcb.connected) for parameters and return values
yueee_yt 0:7766f6712673 923 */
yueee_yt 0:7766f6712673 924 static err_t
yueee_yt 0:7766f6712673 925 do_connected(void *arg, struct tcp_pcb *pcb, err_t err)
yueee_yt 0:7766f6712673 926 {
yueee_yt 0:7766f6712673 927 struct netconn *conn;
yueee_yt 0:7766f6712673 928 int was_blocking;
yueee_yt 0:7766f6712673 929
yueee_yt 0:7766f6712673 930 LWIP_UNUSED_ARG(pcb);
yueee_yt 0:7766f6712673 931
yueee_yt 0:7766f6712673 932 conn = (struct netconn *)arg;
yueee_yt 0:7766f6712673 933
yueee_yt 0:7766f6712673 934 if (conn == NULL) {
yueee_yt 0:7766f6712673 935 return ERR_VAL;
yueee_yt 0:7766f6712673 936 }
yueee_yt 0:7766f6712673 937
yueee_yt 0:7766f6712673 938 LWIP_ASSERT("conn->state == NETCONN_CONNECT", conn->state == NETCONN_CONNECT);
yueee_yt 0:7766f6712673 939 LWIP_ASSERT("(conn->current_msg != NULL) || conn->in_non_blocking_connect",
yueee_yt 0:7766f6712673 940 (conn->current_msg != NULL) || IN_NONBLOCKING_CONNECT(conn));
yueee_yt 0:7766f6712673 941
yueee_yt 0:7766f6712673 942 if (conn->current_msg != NULL) {
yueee_yt 0:7766f6712673 943 conn->current_msg->err = err;
yueee_yt 0:7766f6712673 944 }
yueee_yt 0:7766f6712673 945 if ((conn->type == NETCONN_TCP) && (err == ERR_OK)) {
yueee_yt 0:7766f6712673 946 setup_tcp(conn);
yueee_yt 0:7766f6712673 947 }
yueee_yt 0:7766f6712673 948 was_blocking = !IN_NONBLOCKING_CONNECT(conn);
yueee_yt 0:7766f6712673 949 SET_NONBLOCKING_CONNECT(conn, 0);
yueee_yt 0:7766f6712673 950 conn->current_msg = NULL;
yueee_yt 0:7766f6712673 951 conn->state = NETCONN_NONE;
yueee_yt 0:7766f6712673 952 if (!was_blocking) {
yueee_yt 0:7766f6712673 953 NETCONN_SET_SAFE_ERR(conn, ERR_OK);
yueee_yt 0:7766f6712673 954 }
yueee_yt 0:7766f6712673 955 API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
yueee_yt 0:7766f6712673 956
yueee_yt 0:7766f6712673 957 if (was_blocking) {
yueee_yt 0:7766f6712673 958 sys_sem_signal(&conn->op_completed);
yueee_yt 0:7766f6712673 959 }
yueee_yt 0:7766f6712673 960 return ERR_OK;
yueee_yt 0:7766f6712673 961 }
yueee_yt 0:7766f6712673 962 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 963
yueee_yt 0:7766f6712673 964 /**
yueee_yt 0:7766f6712673 965 * Connect a pcb contained inside a netconn
yueee_yt 0:7766f6712673 966 * Called from netconn_connect.
yueee_yt 0:7766f6712673 967 *
yueee_yt 0:7766f6712673 968 * @param msg the api_msg_msg pointing to the connection and containing
yueee_yt 0:7766f6712673 969 * the IP address and port to connect to
yueee_yt 0:7766f6712673 970 */
yueee_yt 0:7766f6712673 971 void
yueee_yt 0:7766f6712673 972 do_connect(struct api_msg_msg *msg)
yueee_yt 0:7766f6712673 973 {
yueee_yt 0:7766f6712673 974 if (msg->conn->pcb.tcp == NULL) {
yueee_yt 0:7766f6712673 975 /* This may happen when calling netconn_connect() a second time */
yueee_yt 0:7766f6712673 976 msg->err = ERR_CLSD;
yueee_yt 0:7766f6712673 977 } else {
yueee_yt 0:7766f6712673 978 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
yueee_yt 0:7766f6712673 979 #if LWIP_RAW
yueee_yt 0:7766f6712673 980 case NETCONN_RAW:
yueee_yt 0:7766f6712673 981 msg->err = raw_connect(msg->conn->pcb.raw, msg->msg.bc.ipaddr);
yueee_yt 0:7766f6712673 982 break;
yueee_yt 0:7766f6712673 983 #endif /* LWIP_RAW */
yueee_yt 0:7766f6712673 984 #if LWIP_UDP
yueee_yt 0:7766f6712673 985 case NETCONN_UDP:
yueee_yt 0:7766f6712673 986 msg->err = udp_connect(msg->conn->pcb.udp, msg->msg.bc.ipaddr, msg->msg.bc.port);
yueee_yt 0:7766f6712673 987 break;
yueee_yt 0:7766f6712673 988 #endif /* LWIP_UDP */
yueee_yt 0:7766f6712673 989 #if LWIP_TCP
yueee_yt 0:7766f6712673 990 case NETCONN_TCP:
yueee_yt 0:7766f6712673 991 /* Prevent connect while doing any other action. */
yueee_yt 0:7766f6712673 992 if (msg->conn->state != NETCONN_NONE) {
yueee_yt 0:7766f6712673 993 msg->err = ERR_ISCONN;
yueee_yt 0:7766f6712673 994 } else {
yueee_yt 0:7766f6712673 995 setup_tcp(msg->conn);
yueee_yt 0:7766f6712673 996 msg->err = tcp_connect(msg->conn->pcb.tcp, msg->msg.bc.ipaddr,
yueee_yt 0:7766f6712673 997 msg->msg.bc.port, do_connected);
yueee_yt 0:7766f6712673 998 if (msg->err == ERR_OK) {
yueee_yt 0:7766f6712673 999 u8_t non_blocking = netconn_is_nonblocking(msg->conn);
yueee_yt 0:7766f6712673 1000 msg->conn->state = NETCONN_CONNECT;
yueee_yt 0:7766f6712673 1001 SET_NONBLOCKING_CONNECT(msg->conn, non_blocking);
yueee_yt 0:7766f6712673 1002 if (non_blocking) {
yueee_yt 0:7766f6712673 1003 msg->err = ERR_INPROGRESS;
yueee_yt 0:7766f6712673 1004 } else {
yueee_yt 0:7766f6712673 1005 msg->conn->current_msg = msg;
yueee_yt 0:7766f6712673 1006 /* sys_sem_signal() is called from do_connected (or err_tcp()),
yueee_yt 0:7766f6712673 1007 * when the connection is established! */
yueee_yt 0:7766f6712673 1008 return;
yueee_yt 0:7766f6712673 1009 }
yueee_yt 0:7766f6712673 1010 }
yueee_yt 0:7766f6712673 1011 }
yueee_yt 0:7766f6712673 1012 break;
yueee_yt 0:7766f6712673 1013 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 1014 default:
yueee_yt 0:7766f6712673 1015 LWIP_ERROR("Invalid netconn type", 0, do{ msg->err = ERR_VAL; }while(0));
yueee_yt 0:7766f6712673 1016 break;
yueee_yt 0:7766f6712673 1017 }
yueee_yt 0:7766f6712673 1018 }
yueee_yt 0:7766f6712673 1019 sys_sem_signal(&msg->conn->op_completed);
yueee_yt 0:7766f6712673 1020 }
yueee_yt 0:7766f6712673 1021
yueee_yt 0:7766f6712673 1022 /**
yueee_yt 0:7766f6712673 1023 * Connect a pcb contained inside a netconn
yueee_yt 0:7766f6712673 1024 * Only used for UDP netconns.
yueee_yt 0:7766f6712673 1025 * Called from netconn_disconnect.
yueee_yt 0:7766f6712673 1026 *
yueee_yt 0:7766f6712673 1027 * @param msg the api_msg_msg pointing to the connection to disconnect
yueee_yt 0:7766f6712673 1028 */
yueee_yt 0:7766f6712673 1029 void
yueee_yt 0:7766f6712673 1030 do_disconnect(struct api_msg_msg *msg)
yueee_yt 0:7766f6712673 1031 {
yueee_yt 0:7766f6712673 1032 #if LWIP_UDP
yueee_yt 0:7766f6712673 1033 if (NETCONNTYPE_GROUP(msg->conn->type) == NETCONN_UDP) {
yueee_yt 0:7766f6712673 1034 udp_disconnect(msg->conn->pcb.udp);
yueee_yt 0:7766f6712673 1035 msg->err = ERR_OK;
yueee_yt 0:7766f6712673 1036 } else
yueee_yt 0:7766f6712673 1037 #endif /* LWIP_UDP */
yueee_yt 0:7766f6712673 1038 {
yueee_yt 0:7766f6712673 1039 msg->err = ERR_VAL;
yueee_yt 0:7766f6712673 1040 }
yueee_yt 0:7766f6712673 1041 TCPIP_APIMSG_ACK(msg);
yueee_yt 0:7766f6712673 1042 }
yueee_yt 0:7766f6712673 1043
yueee_yt 0:7766f6712673 1044 #if LWIP_TCP
yueee_yt 0:7766f6712673 1045 /**
yueee_yt 0:7766f6712673 1046 * Set a TCP pcb contained in a netconn into listen mode
yueee_yt 0:7766f6712673 1047 * Called from netconn_listen.
yueee_yt 0:7766f6712673 1048 *
yueee_yt 0:7766f6712673 1049 * @param msg the api_msg_msg pointing to the connection
yueee_yt 0:7766f6712673 1050 */
yueee_yt 0:7766f6712673 1051 void
yueee_yt 0:7766f6712673 1052 do_listen(struct api_msg_msg *msg)
yueee_yt 0:7766f6712673 1053 {
yueee_yt 0:7766f6712673 1054 if (ERR_IS_FATAL(msg->conn->last_err)) {
yueee_yt 0:7766f6712673 1055 msg->err = msg->conn->last_err;
yueee_yt 0:7766f6712673 1056 } else {
yueee_yt 0:7766f6712673 1057 msg->err = ERR_CONN;
yueee_yt 0:7766f6712673 1058 if (msg->conn->pcb.tcp != NULL) {
yueee_yt 0:7766f6712673 1059 if (msg->conn->type == NETCONN_TCP) {
yueee_yt 0:7766f6712673 1060 if (msg->conn->state == NETCONN_NONE) {
yueee_yt 0:7766f6712673 1061 #if TCP_LISTEN_BACKLOG
yueee_yt 0:7766f6712673 1062 struct tcp_pcb* lpcb = tcp_listen_with_backlog(msg->conn->pcb.tcp, msg->msg.lb.backlog);
yueee_yt 0:7766f6712673 1063 #else /* TCP_LISTEN_BACKLOG */
yueee_yt 0:7766f6712673 1064 struct tcp_pcb* lpcb = tcp_listen(msg->conn->pcb.tcp);
yueee_yt 0:7766f6712673 1065 #endif /* TCP_LISTEN_BACKLOG */
yueee_yt 0:7766f6712673 1066 if (lpcb == NULL) {
yueee_yt 0:7766f6712673 1067 /* in this case, the old pcb is still allocated */
yueee_yt 0:7766f6712673 1068 msg->err = ERR_MEM;
yueee_yt 0:7766f6712673 1069 } else {
yueee_yt 0:7766f6712673 1070 /* delete the recvmbox and allocate the acceptmbox */
yueee_yt 0:7766f6712673 1071 if (sys_mbox_valid(&msg->conn->recvmbox)) {
yueee_yt 0:7766f6712673 1072 /** @todo: should we drain the recvmbox here? */
yueee_yt 0:7766f6712673 1073 sys_mbox_free(&msg->conn->recvmbox);
yueee_yt 0:7766f6712673 1074 sys_mbox_set_invalid(&msg->conn->recvmbox);
yueee_yt 0:7766f6712673 1075 }
yueee_yt 0:7766f6712673 1076 msg->err = ERR_OK;
yueee_yt 0:7766f6712673 1077 if (!sys_mbox_valid(&msg->conn->acceptmbox)) {
yueee_yt 0:7766f6712673 1078 msg->err = sys_mbox_new(&msg->conn->acceptmbox, DEFAULT_ACCEPTMBOX_SIZE);
yueee_yt 0:7766f6712673 1079 }
yueee_yt 0:7766f6712673 1080 if (msg->err == ERR_OK) {
yueee_yt 0:7766f6712673 1081 msg->conn->state = NETCONN_LISTEN;
yueee_yt 0:7766f6712673 1082 msg->conn->pcb.tcp = lpcb;
yueee_yt 0:7766f6712673 1083 tcp_arg(msg->conn->pcb.tcp, msg->conn);
yueee_yt 0:7766f6712673 1084 tcp_accept(msg->conn->pcb.tcp, accept_function);
yueee_yt 0:7766f6712673 1085 } else {
yueee_yt 0:7766f6712673 1086 /* since the old pcb is already deallocated, free lpcb now */
yueee_yt 0:7766f6712673 1087 tcp_close(lpcb);
yueee_yt 0:7766f6712673 1088 msg->conn->pcb.tcp = NULL;
yueee_yt 0:7766f6712673 1089 }
yueee_yt 0:7766f6712673 1090 }
yueee_yt 0:7766f6712673 1091 }
yueee_yt 0:7766f6712673 1092 }
yueee_yt 0:7766f6712673 1093 }
yueee_yt 0:7766f6712673 1094 }
yueee_yt 0:7766f6712673 1095 TCPIP_APIMSG_ACK(msg);
yueee_yt 0:7766f6712673 1096 }
yueee_yt 0:7766f6712673 1097 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 1098
yueee_yt 0:7766f6712673 1099 /**
yueee_yt 0:7766f6712673 1100 * Send some data on a RAW or UDP pcb contained in a netconn
yueee_yt 0:7766f6712673 1101 * Called from netconn_send
yueee_yt 0:7766f6712673 1102 *
yueee_yt 0:7766f6712673 1103 * @param msg the api_msg_msg pointing to the connection
yueee_yt 0:7766f6712673 1104 */
yueee_yt 0:7766f6712673 1105 void
yueee_yt 0:7766f6712673 1106 do_send(struct api_msg_msg *msg)
yueee_yt 0:7766f6712673 1107 {
yueee_yt 0:7766f6712673 1108 if (ERR_IS_FATAL(msg->conn->last_err)) {
yueee_yt 0:7766f6712673 1109 msg->err = msg->conn->last_err;
yueee_yt 0:7766f6712673 1110 } else {
yueee_yt 0:7766f6712673 1111 msg->err = ERR_CONN;
yueee_yt 0:7766f6712673 1112 if (msg->conn->pcb.tcp != NULL) {
yueee_yt 0:7766f6712673 1113 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
yueee_yt 0:7766f6712673 1114 #if LWIP_RAW
yueee_yt 0:7766f6712673 1115 case NETCONN_RAW:
yueee_yt 0:7766f6712673 1116 if (ip_addr_isany(&msg->msg.b->addr)) {
yueee_yt 0:7766f6712673 1117 msg->err = raw_send(msg->conn->pcb.raw, msg->msg.b->p);
yueee_yt 0:7766f6712673 1118 } else {
yueee_yt 0:7766f6712673 1119 msg->err = raw_sendto(msg->conn->pcb.raw, msg->msg.b->p, &msg->msg.b->addr);
yueee_yt 0:7766f6712673 1120 }
yueee_yt 0:7766f6712673 1121 break;
yueee_yt 0:7766f6712673 1122 #endif
yueee_yt 0:7766f6712673 1123 #if LWIP_UDP
yueee_yt 0:7766f6712673 1124 case NETCONN_UDP:
yueee_yt 0:7766f6712673 1125 #if LWIP_CHECKSUM_ON_COPY
yueee_yt 0:7766f6712673 1126 if (ip_addr_isany(&msg->msg.b->addr)) {
yueee_yt 0:7766f6712673 1127 msg->err = udp_send_chksum(msg->conn->pcb.udp, msg->msg.b->p,
yueee_yt 0:7766f6712673 1128 msg->msg.b->flags & NETBUF_FLAG_CHKSUM, msg->msg.b->toport_chksum);
yueee_yt 0:7766f6712673 1129 } else {
yueee_yt 0:7766f6712673 1130 msg->err = udp_sendto_chksum(msg->conn->pcb.udp, msg->msg.b->p,
yueee_yt 0:7766f6712673 1131 &msg->msg.b->addr, msg->msg.b->port,
yueee_yt 0:7766f6712673 1132 msg->msg.b->flags & NETBUF_FLAG_CHKSUM, msg->msg.b->toport_chksum);
yueee_yt 0:7766f6712673 1133 }
yueee_yt 0:7766f6712673 1134 #else /* LWIP_CHECKSUM_ON_COPY */
yueee_yt 0:7766f6712673 1135 if (ip_addr_isany(&msg->msg.b->addr)) {
yueee_yt 0:7766f6712673 1136 msg->err = udp_send(msg->conn->pcb.udp, msg->msg.b->p);
yueee_yt 0:7766f6712673 1137 } else {
yueee_yt 0:7766f6712673 1138 msg->err = udp_sendto(msg->conn->pcb.udp, msg->msg.b->p, &msg->msg.b->addr, msg->msg.b->port);
yueee_yt 0:7766f6712673 1139 }
yueee_yt 0:7766f6712673 1140 #endif /* LWIP_CHECKSUM_ON_COPY */
yueee_yt 0:7766f6712673 1141 break;
yueee_yt 0:7766f6712673 1142 #endif /* LWIP_UDP */
yueee_yt 0:7766f6712673 1143 default:
yueee_yt 0:7766f6712673 1144 break;
yueee_yt 0:7766f6712673 1145 }
yueee_yt 0:7766f6712673 1146 }
yueee_yt 0:7766f6712673 1147 }
yueee_yt 0:7766f6712673 1148 TCPIP_APIMSG_ACK(msg);
yueee_yt 0:7766f6712673 1149 }
yueee_yt 0:7766f6712673 1150
yueee_yt 0:7766f6712673 1151 #if LWIP_TCP
yueee_yt 0:7766f6712673 1152 /**
yueee_yt 0:7766f6712673 1153 * Indicate data has been received from a TCP pcb contained in a netconn
yueee_yt 0:7766f6712673 1154 * Called from netconn_recv
yueee_yt 0:7766f6712673 1155 *
yueee_yt 0:7766f6712673 1156 * @param msg the api_msg_msg pointing to the connection
yueee_yt 0:7766f6712673 1157 */
yueee_yt 0:7766f6712673 1158 void
yueee_yt 0:7766f6712673 1159 do_recv(struct api_msg_msg *msg)
yueee_yt 0:7766f6712673 1160 {
yueee_yt 0:7766f6712673 1161 msg->err = ERR_OK;
yueee_yt 0:7766f6712673 1162 if (msg->conn->pcb.tcp != NULL) {
yueee_yt 0:7766f6712673 1163 if (msg->conn->type == NETCONN_TCP) {
yueee_yt 0:7766f6712673 1164 #if TCP_LISTEN_BACKLOG
yueee_yt 0:7766f6712673 1165 if (msg->conn->pcb.tcp->state == LISTEN) {
yueee_yt 0:7766f6712673 1166 tcp_accepted(msg->conn->pcb.tcp);
yueee_yt 0:7766f6712673 1167 } else
yueee_yt 0:7766f6712673 1168 #endif /* TCP_LISTEN_BACKLOG */
yueee_yt 0:7766f6712673 1169 {
yueee_yt 0:7766f6712673 1170 u32_t remaining = msg->msg.r.len;
yueee_yt 0:7766f6712673 1171 do {
yueee_yt 0:7766f6712673 1172 u16_t recved = (remaining > 0xffff) ? 0xffff : (u16_t)remaining;
yueee_yt 0:7766f6712673 1173 tcp_recved(msg->conn->pcb.tcp, recved);
yueee_yt 0:7766f6712673 1174 remaining -= recved;
yueee_yt 0:7766f6712673 1175 }while(remaining != 0);
yueee_yt 0:7766f6712673 1176 }
yueee_yt 0:7766f6712673 1177 }
yueee_yt 0:7766f6712673 1178 }
yueee_yt 0:7766f6712673 1179 TCPIP_APIMSG_ACK(msg);
yueee_yt 0:7766f6712673 1180 }
yueee_yt 0:7766f6712673 1181
yueee_yt 0:7766f6712673 1182 /**
yueee_yt 0:7766f6712673 1183 * See if more data needs to be written from a previous call to netconn_write.
yueee_yt 0:7766f6712673 1184 * Called initially from do_write. If the first call can't send all data
yueee_yt 0:7766f6712673 1185 * (because of low memory or empty send-buffer), this function is called again
yueee_yt 0:7766f6712673 1186 * from sent_tcp() or poll_tcp() to send more data. If all data is sent, the
yueee_yt 0:7766f6712673 1187 * blocking application thread (waiting in netconn_write) is released.
yueee_yt 0:7766f6712673 1188 *
yueee_yt 0:7766f6712673 1189 * @param conn netconn (that is currently in state NETCONN_WRITE) to process
yueee_yt 0:7766f6712673 1190 * @return ERR_OK
yueee_yt 0:7766f6712673 1191 * ERR_MEM if LWIP_TCPIP_CORE_LOCKING=1 and sending hasn't yet finished
yueee_yt 0:7766f6712673 1192 */
yueee_yt 0:7766f6712673 1193 static err_t
yueee_yt 0:7766f6712673 1194 do_writemore(struct netconn *conn)
yueee_yt 0:7766f6712673 1195 {
yueee_yt 0:7766f6712673 1196 err_t err = ERR_OK;
yueee_yt 0:7766f6712673 1197 void *dataptr;
yueee_yt 0:7766f6712673 1198 u16_t len, available;
yueee_yt 0:7766f6712673 1199 u8_t write_finished = 0;
yueee_yt 0:7766f6712673 1200 size_t diff;
yueee_yt 0:7766f6712673 1201 u8_t dontblock = netconn_is_nonblocking(conn) ||
yueee_yt 0:7766f6712673 1202 (conn->current_msg->msg.w.apiflags & NETCONN_DONTBLOCK);
yueee_yt 0:7766f6712673 1203 u8_t apiflags = conn->current_msg->msg.w.apiflags;
yueee_yt 0:7766f6712673 1204
yueee_yt 0:7766f6712673 1205 LWIP_ASSERT("conn != NULL", conn != NULL);
yueee_yt 0:7766f6712673 1206 LWIP_ASSERT("conn->state == NETCONN_WRITE", (conn->state == NETCONN_WRITE));
yueee_yt 0:7766f6712673 1207 LWIP_ASSERT("conn->current_msg != NULL", conn->current_msg != NULL);
yueee_yt 0:7766f6712673 1208 LWIP_ASSERT("conn->pcb.tcp != NULL", conn->pcb.tcp != NULL);
yueee_yt 0:7766f6712673 1209 LWIP_ASSERT("conn->write_offset < conn->current_msg->msg.w.len",
yueee_yt 0:7766f6712673 1210 conn->write_offset < conn->current_msg->msg.w.len);
yueee_yt 0:7766f6712673 1211
yueee_yt 0:7766f6712673 1212 dataptr = (u8_t*)conn->current_msg->msg.w.dataptr + conn->write_offset;
yueee_yt 0:7766f6712673 1213 diff = conn->current_msg->msg.w.len - conn->write_offset;
yueee_yt 0:7766f6712673 1214 if (diff > 0xffffUL) { /* max_u16_t */
yueee_yt 0:7766f6712673 1215 len = 0xffff;
yueee_yt 0:7766f6712673 1216 #if LWIP_TCPIP_CORE_LOCKING
yueee_yt 0:7766f6712673 1217 conn->flags |= NETCONN_FLAG_WRITE_DELAYED;
yueee_yt 0:7766f6712673 1218 #endif
yueee_yt 0:7766f6712673 1219 apiflags |= TCP_WRITE_FLAG_MORE;
yueee_yt 0:7766f6712673 1220 } else {
yueee_yt 0:7766f6712673 1221 len = (u16_t)diff;
yueee_yt 0:7766f6712673 1222 }
yueee_yt 0:7766f6712673 1223 available = tcp_sndbuf(conn->pcb.tcp);
yueee_yt 0:7766f6712673 1224 if (available < len) {
yueee_yt 0:7766f6712673 1225 /* don't try to write more than sendbuf */
yueee_yt 0:7766f6712673 1226 len = available;
yueee_yt 0:7766f6712673 1227 #if LWIP_TCPIP_CORE_LOCKING
yueee_yt 0:7766f6712673 1228 conn->flags |= NETCONN_FLAG_WRITE_DELAYED;
yueee_yt 0:7766f6712673 1229 #endif
yueee_yt 0:7766f6712673 1230 apiflags |= TCP_WRITE_FLAG_MORE;
yueee_yt 0:7766f6712673 1231 }
yueee_yt 0:7766f6712673 1232 if (dontblock && (len < conn->current_msg->msg.w.len)) {
yueee_yt 0:7766f6712673 1233 /* failed to send all data at once -> nonblocking write not possible */
yueee_yt 0:7766f6712673 1234 err = ERR_MEM;
yueee_yt 0:7766f6712673 1235 }
yueee_yt 0:7766f6712673 1236 if (err == ERR_OK) {
yueee_yt 0:7766f6712673 1237 LWIP_ASSERT("do_writemore: invalid length!", ((conn->write_offset + len) <= conn->current_msg->msg.w.len));
yueee_yt 0:7766f6712673 1238 err = tcp_write(conn->pcb.tcp, dataptr, len, apiflags);
yueee_yt 0:7766f6712673 1239 }
yueee_yt 0:7766f6712673 1240 if (dontblock && (err == ERR_MEM)) {
yueee_yt 0:7766f6712673 1241 /* nonblocking write failed */
yueee_yt 0:7766f6712673 1242 write_finished = 1;
yueee_yt 0:7766f6712673 1243 err = ERR_WOULDBLOCK;
yueee_yt 0:7766f6712673 1244 /* let poll_tcp check writable space to mark the pcb
yueee_yt 0:7766f6712673 1245 writable again */
yueee_yt 0:7766f6712673 1246 conn->flags |= NETCONN_FLAG_CHECK_WRITESPACE;
yueee_yt 0:7766f6712673 1247 /* let select mark this pcb as non-writable. */
yueee_yt 0:7766f6712673 1248 API_EVENT(conn, NETCONN_EVT_SENDMINUS, len);
yueee_yt 0:7766f6712673 1249 } else {
yueee_yt 0:7766f6712673 1250 /* if OK or memory error, check available space */
yueee_yt 0:7766f6712673 1251 if (((err == ERR_OK) || (err == ERR_MEM)) &&
yueee_yt 0:7766f6712673 1252 ((tcp_sndbuf(conn->pcb.tcp) <= TCP_SNDLOWAT) ||
yueee_yt 0:7766f6712673 1253 (tcp_sndqueuelen(conn->pcb.tcp) >= TCP_SNDQUEUELOWAT))) {
yueee_yt 0:7766f6712673 1254 /* The queued byte- or pbuf-count exceeds the configured low-water limit,
yueee_yt 0:7766f6712673 1255 let select mark this pcb as non-writable. */
yueee_yt 0:7766f6712673 1256 API_EVENT(conn, NETCONN_EVT_SENDMINUS, len);
yueee_yt 0:7766f6712673 1257 }
yueee_yt 0:7766f6712673 1258
yueee_yt 0:7766f6712673 1259 if (err == ERR_OK) {
yueee_yt 0:7766f6712673 1260 conn->write_offset += len;
yueee_yt 0:7766f6712673 1261 if (conn->write_offset == conn->current_msg->msg.w.len) {
yueee_yt 0:7766f6712673 1262 /* everything was written */
yueee_yt 0:7766f6712673 1263 write_finished = 1;
yueee_yt 0:7766f6712673 1264 conn->write_offset = 0;
yueee_yt 0:7766f6712673 1265 }
yueee_yt 0:7766f6712673 1266 tcp_output(conn->pcb.tcp);
yueee_yt 0:7766f6712673 1267 } else if (err == ERR_MEM) {
yueee_yt 0:7766f6712673 1268 /* If ERR_MEM, we wait for sent_tcp or poll_tcp to be called
yueee_yt 0:7766f6712673 1269 we do NOT return to the application thread, since ERR_MEM is
yueee_yt 0:7766f6712673 1270 only a temporary error! */
yueee_yt 0:7766f6712673 1271
yueee_yt 0:7766f6712673 1272 /* tcp_write returned ERR_MEM, try tcp_output anyway */
yueee_yt 0:7766f6712673 1273 tcp_output(conn->pcb.tcp);
yueee_yt 0:7766f6712673 1274
yueee_yt 0:7766f6712673 1275 #if LWIP_TCPIP_CORE_LOCKING
yueee_yt 0:7766f6712673 1276 conn->flags |= NETCONN_FLAG_WRITE_DELAYED;
yueee_yt 0:7766f6712673 1277 #endif
yueee_yt 0:7766f6712673 1278 } else {
yueee_yt 0:7766f6712673 1279 /* On errors != ERR_MEM, we don't try writing any more but return
yueee_yt 0:7766f6712673 1280 the error to the application thread. */
yueee_yt 0:7766f6712673 1281 write_finished = 1;
yueee_yt 0:7766f6712673 1282 }
yueee_yt 0:7766f6712673 1283 }
yueee_yt 0:7766f6712673 1284
yueee_yt 0:7766f6712673 1285 if (write_finished) {
yueee_yt 0:7766f6712673 1286 /* everything was written: set back connection state
yueee_yt 0:7766f6712673 1287 and back to application task */
yueee_yt 0:7766f6712673 1288 conn->current_msg->err = err;
yueee_yt 0:7766f6712673 1289 conn->current_msg = NULL;
yueee_yt 0:7766f6712673 1290 conn->state = NETCONN_NONE;
yueee_yt 0:7766f6712673 1291 #if LWIP_TCPIP_CORE_LOCKING
yueee_yt 0:7766f6712673 1292 if ((conn->flags & NETCONN_FLAG_WRITE_DELAYED) != 0)
yueee_yt 0:7766f6712673 1293 #endif
yueee_yt 0:7766f6712673 1294 {
yueee_yt 0:7766f6712673 1295 sys_sem_signal(&conn->op_completed);
yueee_yt 0:7766f6712673 1296 }
yueee_yt 0:7766f6712673 1297 }
yueee_yt 0:7766f6712673 1298 #if LWIP_TCPIP_CORE_LOCKING
yueee_yt 0:7766f6712673 1299 else
yueee_yt 0:7766f6712673 1300 return ERR_MEM;
yueee_yt 0:7766f6712673 1301 #endif
yueee_yt 0:7766f6712673 1302 return ERR_OK;
yueee_yt 0:7766f6712673 1303 }
yueee_yt 0:7766f6712673 1304 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 1305
yueee_yt 0:7766f6712673 1306 /**
yueee_yt 0:7766f6712673 1307 * Send some data on a TCP pcb contained in a netconn
yueee_yt 0:7766f6712673 1308 * Called from netconn_write
yueee_yt 0:7766f6712673 1309 *
yueee_yt 0:7766f6712673 1310 * @param msg the api_msg_msg pointing to the connection
yueee_yt 0:7766f6712673 1311 */
yueee_yt 0:7766f6712673 1312 void
yueee_yt 0:7766f6712673 1313 do_write(struct api_msg_msg *msg)
yueee_yt 0:7766f6712673 1314 {
yueee_yt 0:7766f6712673 1315 if (ERR_IS_FATAL(msg->conn->last_err)) {
yueee_yt 0:7766f6712673 1316 msg->err = msg->conn->last_err;
yueee_yt 0:7766f6712673 1317 } else {
yueee_yt 0:7766f6712673 1318 if (msg->conn->type == NETCONN_TCP) {
yueee_yt 0:7766f6712673 1319 #if LWIP_TCP
yueee_yt 0:7766f6712673 1320 if (msg->conn->state != NETCONN_NONE) {
yueee_yt 0:7766f6712673 1321 /* netconn is connecting, closing or in blocking write */
yueee_yt 0:7766f6712673 1322 msg->err = ERR_INPROGRESS;
yueee_yt 0:7766f6712673 1323 } else if (msg->conn->pcb.tcp != NULL) {
yueee_yt 0:7766f6712673 1324 msg->conn->state = NETCONN_WRITE;
yueee_yt 0:7766f6712673 1325 /* set all the variables used by do_writemore */
yueee_yt 0:7766f6712673 1326 LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
yueee_yt 0:7766f6712673 1327 msg->conn->write_offset == 0);
yueee_yt 0:7766f6712673 1328 LWIP_ASSERT("msg->msg.w.len != 0", msg->msg.w.len != 0);
yueee_yt 0:7766f6712673 1329 msg->conn->current_msg = msg;
yueee_yt 0:7766f6712673 1330 msg->conn->write_offset = 0;
yueee_yt 0:7766f6712673 1331 #if LWIP_TCPIP_CORE_LOCKING
yueee_yt 0:7766f6712673 1332 msg->conn->flags &= ~NETCONN_FLAG_WRITE_DELAYED;
yueee_yt 0:7766f6712673 1333 if (do_writemore(msg->conn) != ERR_OK) {
yueee_yt 0:7766f6712673 1334 LWIP_ASSERT("state!", msg->conn->state == NETCONN_WRITE);
yueee_yt 0:7766f6712673 1335 UNLOCK_TCPIP_CORE();
yueee_yt 0:7766f6712673 1336 sys_arch_sem_wait(&msg->conn->op_completed, 0);
yueee_yt 0:7766f6712673 1337 LOCK_TCPIP_CORE();
yueee_yt 0:7766f6712673 1338 LWIP_ASSERT("state!", msg->conn->state == NETCONN_NONE);
yueee_yt 0:7766f6712673 1339 }
yueee_yt 0:7766f6712673 1340 #else /* LWIP_TCPIP_CORE_LOCKING */
yueee_yt 0:7766f6712673 1341 do_writemore(msg->conn);
yueee_yt 0:7766f6712673 1342 #endif /* LWIP_TCPIP_CORE_LOCKING */
yueee_yt 0:7766f6712673 1343 /* for both cases: if do_writemore was called, don't ACK the APIMSG
yueee_yt 0:7766f6712673 1344 since do_writemore ACKs it! */
yueee_yt 0:7766f6712673 1345 return;
yueee_yt 0:7766f6712673 1346 } else {
yueee_yt 0:7766f6712673 1347 msg->err = ERR_CONN;
yueee_yt 0:7766f6712673 1348 }
yueee_yt 0:7766f6712673 1349 #else /* LWIP_TCP */
yueee_yt 0:7766f6712673 1350 msg->err = ERR_VAL;
yueee_yt 0:7766f6712673 1351 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 1352 #if (LWIP_UDP || LWIP_RAW)
yueee_yt 0:7766f6712673 1353 } else {
yueee_yt 0:7766f6712673 1354 msg->err = ERR_VAL;
yueee_yt 0:7766f6712673 1355 #endif /* (LWIP_UDP || LWIP_RAW) */
yueee_yt 0:7766f6712673 1356 }
yueee_yt 0:7766f6712673 1357 }
yueee_yt 0:7766f6712673 1358 TCPIP_APIMSG_ACK(msg);
yueee_yt 0:7766f6712673 1359 }
yueee_yt 0:7766f6712673 1360
yueee_yt 0:7766f6712673 1361 /**
yueee_yt 0:7766f6712673 1362 * Return a connection's local or remote address
yueee_yt 0:7766f6712673 1363 * Called from netconn_getaddr
yueee_yt 0:7766f6712673 1364 *
yueee_yt 0:7766f6712673 1365 * @param msg the api_msg_msg pointing to the connection
yueee_yt 0:7766f6712673 1366 */
yueee_yt 0:7766f6712673 1367 void
yueee_yt 0:7766f6712673 1368 do_getaddr(struct api_msg_msg *msg)
yueee_yt 0:7766f6712673 1369 {
yueee_yt 0:7766f6712673 1370 if (msg->conn->pcb.ip != NULL) {
yueee_yt 0:7766f6712673 1371 *(msg->msg.ad.ipaddr) = (msg->msg.ad.local ? msg->conn->pcb.ip->local_ip :
yueee_yt 0:7766f6712673 1372 msg->conn->pcb.ip->remote_ip);
yueee_yt 0:7766f6712673 1373
yueee_yt 0:7766f6712673 1374 msg->err = ERR_OK;
yueee_yt 0:7766f6712673 1375 switch (NETCONNTYPE_GROUP(msg->conn->type)) {
yueee_yt 0:7766f6712673 1376 #if LWIP_RAW
yueee_yt 0:7766f6712673 1377 case NETCONN_RAW:
yueee_yt 0:7766f6712673 1378 if (msg->msg.ad.local) {
yueee_yt 0:7766f6712673 1379 *(msg->msg.ad.port) = msg->conn->pcb.raw->protocol;
yueee_yt 0:7766f6712673 1380 } else {
yueee_yt 0:7766f6712673 1381 /* return an error as connecting is only a helper for upper layers */
yueee_yt 0:7766f6712673 1382 msg->err = ERR_CONN;
yueee_yt 0:7766f6712673 1383 }
yueee_yt 0:7766f6712673 1384 break;
yueee_yt 0:7766f6712673 1385 #endif /* LWIP_RAW */
yueee_yt 0:7766f6712673 1386 #if LWIP_UDP
yueee_yt 0:7766f6712673 1387 case NETCONN_UDP:
yueee_yt 0:7766f6712673 1388 if (msg->msg.ad.local) {
yueee_yt 0:7766f6712673 1389 *(msg->msg.ad.port) = msg->conn->pcb.udp->local_port;
yueee_yt 0:7766f6712673 1390 } else {
yueee_yt 0:7766f6712673 1391 if ((msg->conn->pcb.udp->flags & UDP_FLAGS_CONNECTED) == 0) {
yueee_yt 0:7766f6712673 1392 msg->err = ERR_CONN;
yueee_yt 0:7766f6712673 1393 } else {
yueee_yt 0:7766f6712673 1394 *(msg->msg.ad.port) = msg->conn->pcb.udp->remote_port;
yueee_yt 0:7766f6712673 1395 }
yueee_yt 0:7766f6712673 1396 }
yueee_yt 0:7766f6712673 1397 break;
yueee_yt 0:7766f6712673 1398 #endif /* LWIP_UDP */
yueee_yt 0:7766f6712673 1399 #if LWIP_TCP
yueee_yt 0:7766f6712673 1400 case NETCONN_TCP:
yueee_yt 0:7766f6712673 1401 *(msg->msg.ad.port) = (msg->msg.ad.local?msg->conn->pcb.tcp->local_port:msg->conn->pcb.tcp->remote_port);
yueee_yt 0:7766f6712673 1402 break;
yueee_yt 0:7766f6712673 1403 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 1404 default:
yueee_yt 0:7766f6712673 1405 LWIP_ASSERT("invalid netconn_type", 0);
yueee_yt 0:7766f6712673 1406 break;
yueee_yt 0:7766f6712673 1407 }
yueee_yt 0:7766f6712673 1408 } else {
yueee_yt 0:7766f6712673 1409 msg->err = ERR_CONN;
yueee_yt 0:7766f6712673 1410 }
yueee_yt 0:7766f6712673 1411 TCPIP_APIMSG_ACK(msg);
yueee_yt 0:7766f6712673 1412 }
yueee_yt 0:7766f6712673 1413
yueee_yt 0:7766f6712673 1414 /**
yueee_yt 0:7766f6712673 1415 * Close a TCP pcb contained in a netconn
yueee_yt 0:7766f6712673 1416 * Called from netconn_close
yueee_yt 0:7766f6712673 1417 *
yueee_yt 0:7766f6712673 1418 * @param msg the api_msg_msg pointing to the connection
yueee_yt 0:7766f6712673 1419 */
yueee_yt 0:7766f6712673 1420 void
yueee_yt 0:7766f6712673 1421 do_close(struct api_msg_msg *msg)
yueee_yt 0:7766f6712673 1422 {
yueee_yt 0:7766f6712673 1423 #if LWIP_TCP
yueee_yt 0:7766f6712673 1424 /* @todo: abort running write/connect? */
yueee_yt 0:7766f6712673 1425 if ((msg->conn->state != NETCONN_NONE) && (msg->conn->state != NETCONN_LISTEN)) {
yueee_yt 0:7766f6712673 1426 /* this only happens for TCP netconns */
yueee_yt 0:7766f6712673 1427 LWIP_ASSERT("msg->conn->type == NETCONN_TCP", msg->conn->type == NETCONN_TCP);
yueee_yt 0:7766f6712673 1428 msg->err = ERR_INPROGRESS;
yueee_yt 0:7766f6712673 1429 } else if ((msg->conn->pcb.tcp != NULL) && (msg->conn->type == NETCONN_TCP)) {
yueee_yt 0:7766f6712673 1430 if ((msg->msg.sd.shut != NETCONN_SHUT_RDWR) && (msg->conn->state == NETCONN_LISTEN)) {
yueee_yt 0:7766f6712673 1431 /* LISTEN doesn't support half shutdown */
yueee_yt 0:7766f6712673 1432 msg->err = ERR_CONN;
yueee_yt 0:7766f6712673 1433 } else {
yueee_yt 0:7766f6712673 1434 if (msg->msg.sd.shut & NETCONN_SHUT_RD) {
yueee_yt 0:7766f6712673 1435 /* Drain and delete mboxes */
yueee_yt 0:7766f6712673 1436 netconn_drain(msg->conn);
yueee_yt 0:7766f6712673 1437 }
yueee_yt 0:7766f6712673 1438 LWIP_ASSERT("already writing or closing", msg->conn->current_msg == NULL &&
yueee_yt 0:7766f6712673 1439 msg->conn->write_offset == 0);
yueee_yt 0:7766f6712673 1440 msg->conn->state = NETCONN_CLOSE;
yueee_yt 0:7766f6712673 1441 msg->conn->current_msg = msg;
yueee_yt 0:7766f6712673 1442 do_close_internal(msg->conn);
yueee_yt 0:7766f6712673 1443 /* for tcp netconns, do_close_internal ACKs the message */
yueee_yt 0:7766f6712673 1444 return;
yueee_yt 0:7766f6712673 1445 }
yueee_yt 0:7766f6712673 1446 } else
yueee_yt 0:7766f6712673 1447 #endif /* LWIP_TCP */
yueee_yt 0:7766f6712673 1448 {
yueee_yt 0:7766f6712673 1449 msg->err = ERR_VAL;
yueee_yt 0:7766f6712673 1450 }
yueee_yt 0:7766f6712673 1451 sys_sem_signal(&msg->conn->op_completed);
yueee_yt 0:7766f6712673 1452 }
yueee_yt 0:7766f6712673 1453
yueee_yt 0:7766f6712673 1454 #if LWIP_IGMP
yueee_yt 0:7766f6712673 1455 /**
yueee_yt 0:7766f6712673 1456 * Join multicast groups for UDP netconns.
yueee_yt 0:7766f6712673 1457 * Called from netconn_join_leave_group
yueee_yt 0:7766f6712673 1458 *
yueee_yt 0:7766f6712673 1459 * @param msg the api_msg_msg pointing to the connection
yueee_yt 0:7766f6712673 1460 */
yueee_yt 0:7766f6712673 1461 void
yueee_yt 0:7766f6712673 1462 do_join_leave_group(struct api_msg_msg *msg)
yueee_yt 0:7766f6712673 1463 {
yueee_yt 0:7766f6712673 1464 if (ERR_IS_FATAL(msg->conn->last_err)) {
yueee_yt 0:7766f6712673 1465 msg->err = msg->conn->last_err;
yueee_yt 0:7766f6712673 1466 } else {
yueee_yt 0:7766f6712673 1467 if (msg->conn->pcb.tcp != NULL) {
yueee_yt 0:7766f6712673 1468 if (NETCONNTYPE_GROUP(msg->conn->type) == NETCONN_UDP) {
yueee_yt 0:7766f6712673 1469 #if LWIP_UDP
yueee_yt 0:7766f6712673 1470 if (msg->msg.jl.join_or_leave == NETCONN_JOIN) {
yueee_yt 0:7766f6712673 1471 msg->err = igmp_joingroup(msg->msg.jl.netif_addr, msg->msg.jl.multiaddr);
yueee_yt 0:7766f6712673 1472 } else {
yueee_yt 0:7766f6712673 1473 msg->err = igmp_leavegroup(msg->msg.jl.netif_addr, msg->msg.jl.multiaddr);
yueee_yt 0:7766f6712673 1474 }
yueee_yt 0:7766f6712673 1475 #endif /* LWIP_UDP */
yueee_yt 0:7766f6712673 1476 #if (LWIP_TCP || LWIP_RAW)
yueee_yt 0:7766f6712673 1477 } else {
yueee_yt 0:7766f6712673 1478 msg->err = ERR_VAL;
yueee_yt 0:7766f6712673 1479 #endif /* (LWIP_TCP || LWIP_RAW) */
yueee_yt 0:7766f6712673 1480 }
yueee_yt 0:7766f6712673 1481 } else {
yueee_yt 0:7766f6712673 1482 msg->err = ERR_CONN;
yueee_yt 0:7766f6712673 1483 }
yueee_yt 0:7766f6712673 1484 }
yueee_yt 0:7766f6712673 1485 TCPIP_APIMSG_ACK(msg);
yueee_yt 0:7766f6712673 1486 }
yueee_yt 0:7766f6712673 1487 #endif /* LWIP_IGMP */
yueee_yt 0:7766f6712673 1488
yueee_yt 0:7766f6712673 1489 #if LWIP_DNS
yueee_yt 0:7766f6712673 1490 /**
yueee_yt 0:7766f6712673 1491 * Callback function that is called when DNS name is resolved
yueee_yt 0:7766f6712673 1492 * (or on timeout). A waiting application thread is waked up by
yueee_yt 0:7766f6712673 1493 * signaling the semaphore.
yueee_yt 0:7766f6712673 1494 */
yueee_yt 0:7766f6712673 1495 static void
yueee_yt 0:7766f6712673 1496 do_dns_found(const char *name, ip_addr_t *ipaddr, void *arg)
yueee_yt 0:7766f6712673 1497 {
yueee_yt 0:7766f6712673 1498 struct dns_api_msg *msg = (struct dns_api_msg*)arg;
yueee_yt 0:7766f6712673 1499
yueee_yt 0:7766f6712673 1500 LWIP_ASSERT("DNS response for wrong host name", strcmp(msg->name, name) == 0);
yueee_yt 0:7766f6712673 1501 LWIP_UNUSED_ARG(name);
yueee_yt 0:7766f6712673 1502
yueee_yt 0:7766f6712673 1503 if (ipaddr == NULL) {
yueee_yt 0:7766f6712673 1504 /* timeout or memory error */
yueee_yt 0:7766f6712673 1505 *msg->err = ERR_VAL;
yueee_yt 0:7766f6712673 1506 } else {
yueee_yt 0:7766f6712673 1507 /* address was resolved */
yueee_yt 0:7766f6712673 1508 *msg->err = ERR_OK;
yueee_yt 0:7766f6712673 1509 *msg->addr = *ipaddr;
yueee_yt 0:7766f6712673 1510 }
yueee_yt 0:7766f6712673 1511 /* wake up the application task waiting in netconn_gethostbyname */
yueee_yt 0:7766f6712673 1512 sys_sem_signal(msg->sem);
yueee_yt 0:7766f6712673 1513 }
yueee_yt 0:7766f6712673 1514
yueee_yt 0:7766f6712673 1515 /**
yueee_yt 0:7766f6712673 1516 * Execute a DNS query
yueee_yt 0:7766f6712673 1517 * Called from netconn_gethostbyname
yueee_yt 0:7766f6712673 1518 *
yueee_yt 0:7766f6712673 1519 * @param arg the dns_api_msg pointing to the query
yueee_yt 0:7766f6712673 1520 */
yueee_yt 0:7766f6712673 1521 void
yueee_yt 0:7766f6712673 1522 do_gethostbyname(void *arg)
yueee_yt 0:7766f6712673 1523 {
yueee_yt 0:7766f6712673 1524 struct dns_api_msg *msg = (struct dns_api_msg*)arg;
yueee_yt 0:7766f6712673 1525
yueee_yt 0:7766f6712673 1526 *msg->err = dns_gethostbyname(msg->name, msg->addr, do_dns_found, msg);
yueee_yt 0:7766f6712673 1527 if (*msg->err != ERR_INPROGRESS) {
yueee_yt 0:7766f6712673 1528 /* on error or immediate success, wake up the application
yueee_yt 0:7766f6712673 1529 * task waiting in netconn_gethostbyname */
yueee_yt 0:7766f6712673 1530 sys_sem_signal(msg->sem);
yueee_yt 0:7766f6712673 1531 }
yueee_yt 0:7766f6712673 1532 }
yueee_yt 0:7766f6712673 1533 #endif /* LWIP_DNS */
yueee_yt 0:7766f6712673 1534
yueee_yt 0:7766f6712673 1535 #endif /* LWIP_NETCONN */