Zoltan Hudak / UIPEthernet Featured

Mbed library for ENC28J60 Ethernet modules. Full support for TCP/IP and UDP Server, Client and HTTP server (webserver). DHCP and DNS is included.

Dependents:   mBuino_ENC28_MQTT Nucleo_Web_ENC28J60 Nucleo_Web_ENC28J60_ADC Serial_over_Ethernet ... more

Library for ENC28J60 Ethernet modules.

/media/uploads/hudakz/enc28j60_module01.jpg

Ported to mbed from Norbert Truchsess's UIPEthernet library for Arduino. Thank you Norbert!

  • Full support for persistent (streaming) TCP/IP and UDP connections Client and Server each, ARP, ICMP, DHCP and DNS.
  • Works with both Mbed OS 2 and Mbed OS 5.

Usage:

  • Import the library into your project.
  • Add #include "UipEthernet.h" to main.cpp
  • Create one instance of the UipEthernet class initialized with the MAC address you'd like to use and SPI pins of the connected Mbed board.

Example programs:

Import programWebSwitch_ENC28J60

HTTP Server serving a simple webpage which enables to remotely turn a digital output on/off. Compile, download, run and type 'IP_address/secret/' (don't forget the last '/') into your web browser and hit ENTER.

Last commit 23 Jul 2020 by Zoltan Hudak

Import programHTTPServer_Echo_ENC28J60

A simple HTTP server echoing received requests. Ethernet connection is over an ENC28J60 board. Usage: Type the server's IP address into you web browser and hit <ENTER>.

Last commit 23 Jul 2020 by Zoltan Hudak

Import programTcpServer_ENC28J60

Simple TCP/IP Server using the UIPEthernet library for ENC28J60 Ethernet boards.

Last commit 23 Jul 2020 by Zoltan Hudak

Import programTcpClient_ENC28J60

Simple TCP/IP Client using the UIPEthernet library for ENC28J60 Ethernet boards.

Last commit 23 Jul 2020 by Zoltan Hudak

Import programUdpServer_ENC28J60

Simple UDP Server using the UIPEthernet library for ENC28J60 Ethernet boards.

Last commit 23 Jul 2020 by Zoltan Hudak

Import programUdpClient_ENC28J60

Simple UDP Client using the UIPEthernet library for ENC28J60 Ethernet boards.

Last commit 23 Jul 2020 by Zoltan Hudak

Import programMQTT_Hello_ENC28J60

MQTT Client example program. Ethernet connection is via an ENC28J60 module.

Last commit 23 Jul 2020 by Zoltan Hudak

UdpSocket.cpp@15:53715cc81c63, 2019-09-07 (annotated)

Committer:
hudakz
Date:
Sat Sep 07 17:42:42 2019 +0000
Revision:
15:53715cc81c63
Parent:
14:7648334eb41b 
Timeout parameter added for the 'connect' function, SPI speed reduced from 20 to 10 Mb/s, debug messages fixed ...

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hudakz 9:a156d3de5647 1 /*
hudakz 9:a156d3de5647 2 UIPUdp.cpp - Arduino implementation of a UIP wrapper class.
hudakz 9:a156d3de5647 3 Copyright (c) 2013 Norbert Truchsess <norbert.truchsess@t-online.de>
hudakz 9:a156d3de5647 4 All rights reserved.
hudakz 9:a156d3de5647 5
hudakz 9:a156d3de5647 6 This program is free software: you can redistribute it and/or modify
hudakz 9:a156d3de5647 7 it under the terms of the GNU General Public License as published by
hudakz 9:a156d3de5647 8 the Free Software Foundation, either version 3 of the License, or
hudakz 9:a156d3de5647 9 (at your option) any later version.
hudakz 9:a156d3de5647 10
hudakz 9:a156d3de5647 11 This program is distributed in the hope that it will be useful,
hudakz 9:a156d3de5647 12 but WITHOUT ANY WARRANTY; without even the implied warranty of
hudakz 9:a156d3de5647 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
hudakz 9:a156d3de5647 14 GNU General Public License for more details.
hudakz 9:a156d3de5647 15
hudakz 9:a156d3de5647 16 You should have received a copy of the GNU General Public License
hudakz 9:a156d3de5647 17 along with this program. If not, see <http://www.gnu.org/licenses/>.
hudakz 9:a156d3de5647 18 */
hudakz 9:a156d3de5647 19 #include "UipEthernet.h"
hudakz 9:a156d3de5647 20 #include "UdpSocket.h"
hudakz 9:a156d3de5647 21 #include "DnsClient.h"
hudakz 9:a156d3de5647 22
hudakz 9:a156d3de5647 23 extern "C"
hudakz 9:a156d3de5647 24 {
hudakz 9:a156d3de5647 25 #include "utility/uip-conf.h"
hudakz 9:a156d3de5647 26 #include "utility/uip.h"
hudakz 9:a156d3de5647 27 #include "utility/uip_arp.h"
hudakz 9:a156d3de5647 28 }
hudakz 9:a156d3de5647 29 #if UIP_UDP
hudakz 9:a156d3de5647 30 #define UIP_ARPHDRSIZE 42
hudakz 9:a156d3de5647 31 #define UDPBUF ((struct uip_udpip_hdr*) &uip_buf[UIP_LLH_LEN])
hudakz 9:a156d3de5647 32
hudakz 14:7648334eb41b 33 /**
hudakz 14:7648334eb41b 34 * @brief
hudakz 14:7648334eb41b 35 * @note
hudakz 14:7648334eb41b 36 * @param
hudakz 14:7648334eb41b 37 * @retval
hudakz 14:7648334eb41b 38 */
hudakz 9:a156d3de5647 39 UdpSocket::UdpSocket() :
hudakz 14:7648334eb41b 40 _uip_udp_conn(NULL),
hudakz 14:7648334eb41b 41 _timeout_ms(1000)
hudakz 9:a156d3de5647 42 {
hudakz 9:a156d3de5647 43 memset(&appdata, 0, sizeof(appdata));
hudakz 9:a156d3de5647 44 }
hudakz 9:a156d3de5647 45
hudakz 14:7648334eb41b 46 /**
hudakz 14:7648334eb41b 47 * @brief
hudakz 14:7648334eb41b 48 * @note
hudakz 14:7648334eb41b 49 * @param
hudakz 14:7648334eb41b 50 * @retval
hudakz 14:7648334eb41b 51 */
hudakz 14:7648334eb41b 52 UdpSocket::UdpSocket(int timeout_ms) :
hudakz 14:7648334eb41b 53 _uip_udp_conn(NULL),
hudakz 14:7648334eb41b 54 _timeout_ms(timeout_ms)
hudakz 14:7648334eb41b 55 {
hudakz 14:7648334eb41b 56 memset(&appdata, 0, sizeof(appdata));
hudakz 14:7648334eb41b 57 }
hudakz 14:7648334eb41b 58
hudakz 14:7648334eb41b 59 /**
hudakz 14:7648334eb41b 60 * @brief
hudakz 14:7648334eb41b 61 * @note
hudakz 14:7648334eb41b 62 * @param
hudakz 14:7648334eb41b 63 * @retval
hudakz 14:7648334eb41b 64 */
hudakz 14:7648334eb41b 65 UdpSocket::UdpSocket(UipEthernet* net, int timeout_ms /*= 1000*/ ) :
hudakz 14:7648334eb41b 66 _uip_udp_conn(NULL),
hudakz 14:7648334eb41b 67 _timeout_ms(timeout_ms)
hudakz 14:7648334eb41b 68 {
hudakz 14:7648334eb41b 69 memset(&appdata, 0, sizeof(appdata));
hudakz 14:7648334eb41b 70 if (UipEthernet::ethernet != net)
hudakz 14:7648334eb41b 71 UipEthernet::ethernet = net;
hudakz 14:7648334eb41b 72 }
hudakz 14:7648334eb41b 73
hudakz 9:a156d3de5647 74 // initialize, start listening on specified port. Returns 1 if successful, 0 if there are no sockets available to use
hudakz 9:a156d3de5647 75 uint8_t UdpSocket::begin(uint16_t port)
hudakz 9:a156d3de5647 76 {
hudakz 9:a156d3de5647 77 if (!_uip_udp_conn) {
hudakz 9:a156d3de5647 78 _uip_udp_conn = uip_udp_new(NULL, 0);
hudakz 9:a156d3de5647 79 }
hudakz 9:a156d3de5647 80
hudakz 9:a156d3de5647 81 if (_uip_udp_conn) {
hudakz 9:a156d3de5647 82 uip_udp_bind(_uip_udp_conn, htons(port));
hudakz 9:a156d3de5647 83 _uip_udp_conn->appstate = &appdata;
hudakz 9:a156d3de5647 84 return 1;
hudakz 9:a156d3de5647 85 }
hudakz 9:a156d3de5647 86
hudakz 9:a156d3de5647 87 return 0;
hudakz 9:a156d3de5647 88 }
hudakz 9:a156d3de5647 89
hudakz 9:a156d3de5647 90 // Finish with the UDP socket
hudakz 9:a156d3de5647 91 void UdpSocket::stop()
hudakz 9:a156d3de5647 92 {
hudakz 9:a156d3de5647 93 if (_uip_udp_conn) {
hudakz 9:a156d3de5647 94 uip_udp_remove(_uip_udp_conn);
hudakz 9:a156d3de5647 95 _uip_udp_conn->appstate = NULL;
hudakz 9:a156d3de5647 96 _uip_udp_conn = NULL;
hudakz 11:647d53d146f1 97 UipEthernet::ethernet->enc28j60Eth.freeBlock(appdata.packet_in);
hudakz 11:647d53d146f1 98 UipEthernet::ethernet->enc28j60Eth.freeBlock(appdata.packet_next);
hudakz 11:647d53d146f1 99 UipEthernet::ethernet->enc28j60Eth.freeBlock(appdata.packet_out);
hudakz 9:a156d3de5647 100 memset(&appdata, 0, sizeof(appdata));
hudakz 9:a156d3de5647 101 }
hudakz 9:a156d3de5647 102 }
hudakz 9:a156d3de5647 103
hudakz 14:7648334eb41b 104 /**
hudakz 14:7648334eb41b 105 * @brief
hudakz 14:7648334eb41b 106 * @note
hudakz 14:7648334eb41b 107 * @param
hudakz 14:7648334eb41b 108 * @retval
hudakz 14:7648334eb41b 109 */
hudakz 14:7648334eb41b 110 void UdpSocket::close()
hudakz 14:7648334eb41b 111 {
hudakz 14:7648334eb41b 112 stop();
hudakz 14:7648334eb41b 113 }
hudakz 14:7648334eb41b 114
hudakz 9:a156d3de5647 115 // Sending UDP packets
hudakz 9:a156d3de5647 116 // Start building up a packet to send to the remote host specific in ip and port
hudakz 9:a156d3de5647 117
hudakz 9:a156d3de5647 118 // Returns 1 if successful, 0 if there was a problem with the supplied IP address or port
hudakz 9:a156d3de5647 119 int UdpSocket::beginPacket(IpAddress ip, uint16_t port)
hudakz 9:a156d3de5647 120 {
hudakz 9:a156d3de5647 121 UipEthernet::ethernet->tick();
hudakz 9:a156d3de5647 122 if (ip && port) {
hudakz 9:a156d3de5647 123 uip_ipaddr_t ripaddr;
hudakz 9:a156d3de5647 124 uip_ip_addr(&ripaddr, ip);
hudakz 9:a156d3de5647 125 #ifdef UIPETHERNET_DEBUG_UDP
hudakz 9:a156d3de5647 126 printf("udp beginPacket, ");
hudakz 9:a156d3de5647 127 #endif
hudakz 9:a156d3de5647 128 if (_uip_udp_conn) {
hudakz 9:a156d3de5647 129 _uip_udp_conn->rport = htons(port);
hudakz 9:a156d3de5647 130 uip_ipaddr_copy(_uip_udp_conn->ripaddr, &ripaddr);
hudakz 9:a156d3de5647 131 }
hudakz 9:a156d3de5647 132 else {
hudakz 9:a156d3de5647 133 _uip_udp_conn = uip_udp_new(&ripaddr, htons(port));
hudakz 9:a156d3de5647 134 if (_uip_udp_conn)
hudakz 9:a156d3de5647 135 {
hudakz 9:a156d3de5647 136 #ifdef UIPETHERNET_DEBUG_UDP
hudakz 9:a156d3de5647 137 printf("new connection, ");
hudakz 9:a156d3de5647 138 #endif
hudakz 9:a156d3de5647 139 _uip_udp_conn->appstate = &appdata;
hudakz 9:a156d3de5647 140 }
hudakz 9:a156d3de5647 141 else
hudakz 9:a156d3de5647 142 {
hudakz 9:a156d3de5647 143 #ifdef UIPETHERNET_DEBUG_UDP
hudakz 9:a156d3de5647 144 printf("failed to allocate new connection\r\n");
hudakz 9:a156d3de5647 145 #endif
hudakz 9:a156d3de5647 146 return 0;
hudakz 9:a156d3de5647 147 }
hudakz 9:a156d3de5647 148 }
hudakz 9:a156d3de5647 149
hudakz 9:a156d3de5647 150 #ifdef UIPETHERNET_DEBUG_UDP
hudakz 15:53715cc81c63 151 char buf[16];
hudakz 15:53715cc81c63 152 printf("rip: %s, port: %d\r\n", ip.toString(buf), port);
hudakz 9:a156d3de5647 153 #endif
hudakz 9:a156d3de5647 154 }
hudakz 9:a156d3de5647 155
hudakz 9:a156d3de5647 156 if (_uip_udp_conn) {
hudakz 9:a156d3de5647 157 if (appdata.packet_out == NOBLOCK) {
hudakz 11:647d53d146f1 158 appdata.packet_out = UipEthernet::ethernet->enc28j60Eth.allocBlock(UIP_UDP_MAXPACKETSIZE);
hudakz 9:a156d3de5647 159 appdata.out_pos = UIP_UDP_PHYH_LEN;
hudakz 15:53715cc81c63 160 if (appdata.packet_out != NOBLOCK) {
hudakz 9:a156d3de5647 161 return 1;
hudakz 15:53715cc81c63 162 }
hudakz 9:a156d3de5647 163 #ifdef UIPETHERNET_DEBUG_UDP
hudakz 15:53715cc81c63 164 else {
hudakz 9:a156d3de5647 165 printf("failed to allocate memory for packet\r\n");
hudakz 15:53715cc81c63 166 }
hudakz 9:a156d3de5647 167 #endif
hudakz 9:a156d3de5647 168 }
hudakz 9:a156d3de5647 169
hudakz 9:a156d3de5647 170 #ifdef UIPETHERNET_DEBUG_UDP
hudakz 15:53715cc81c63 171 else {
hudakz 9:a156d3de5647 172 printf("previous packet on that connection not sent yet\r\n");
hudakz 15:53715cc81c63 173 }
hudakz 9:a156d3de5647 174 #endif
hudakz 9:a156d3de5647 175 }
hudakz 9:a156d3de5647 176
hudakz 9:a156d3de5647 177 return 0;
hudakz 9:a156d3de5647 178 }
hudakz 9:a156d3de5647 179
hudakz 9:a156d3de5647 180 // Start building up a packet to send to the remote host specific in host and port
hudakz 9:a156d3de5647 181
hudakz 9:a156d3de5647 182 // Returns 1 if successful, 0 if there was a problem resolving the hostname or port
hudakz 9:a156d3de5647 183 int UdpSocket::beginPacket(const char* host, uint16_t port)
hudakz 9:a156d3de5647 184 {
hudakz 9:a156d3de5647 185 // Look up the host first
hudakz 9:a156d3de5647 186 int ret = 0;
hudakz 9:a156d3de5647 187 DnsClient dns;
hudakz 9:a156d3de5647 188 IpAddress remote_addr;
hudakz 9:a156d3de5647 189
hudakz 9:a156d3de5647 190 dns.begin(UipEthernet::ethernet->dnsServerIP());
hudakz 9:a156d3de5647 191 ret = dns.getHostByName(host, remote_addr);
hudakz 9:a156d3de5647 192 if (ret == 1) {
hudakz 9:a156d3de5647 193 return beginPacket(remote_addr, port);
hudakz 9:a156d3de5647 194 }
hudakz 9:a156d3de5647 195 else {
hudakz 9:a156d3de5647 196 return ret;
hudakz 9:a156d3de5647 197 }
hudakz 9:a156d3de5647 198 }
hudakz 9:a156d3de5647 199
hudakz 9:a156d3de5647 200 // Finish off this packet and send it
hudakz 9:a156d3de5647 201
hudakz 9:a156d3de5647 202 // Returns 1 if the packet was sent successfully, 0 if there was an error
hudakz 9:a156d3de5647 203 int UdpSocket::endPacket()
hudakz 9:a156d3de5647 204 {
hudakz 9:a156d3de5647 205 if (_uip_udp_conn && appdata.packet_out != NOBLOCK) {
hudakz 9:a156d3de5647 206 appdata.send = true;
hudakz 11:647d53d146f1 207 UipEthernet::ethernet->enc28j60Eth.resizeBlock(appdata.packet_out, 0, appdata.out_pos);
hudakz 9:a156d3de5647 208 uip_udp_periodic_conn(_uip_udp_conn);
hudakz 9:a156d3de5647 209 if (uip_len > 0) {
hudakz 9:a156d3de5647 210 _send(&appdata);
hudakz 9:a156d3de5647 211 return 1;
hudakz 9:a156d3de5647 212 }
hudakz 9:a156d3de5647 213 }
hudakz 9:a156d3de5647 214
hudakz 9:a156d3de5647 215 return 0;
hudakz 9:a156d3de5647 216 }
hudakz 9:a156d3de5647 217
hudakz 9:a156d3de5647 218 // Write a single byte into the packet
hudakz 9:a156d3de5647 219 size_t UdpSocket::write(uint8_t c)
hudakz 9:a156d3de5647 220 {
hudakz 9:a156d3de5647 221 return write(&c, 1);
hudakz 9:a156d3de5647 222 }
hudakz 9:a156d3de5647 223
hudakz 9:a156d3de5647 224 // Write size bytes from buffer into the packet
hudakz 9:a156d3de5647 225 size_t UdpSocket::write(const uint8_t* buffer, size_t size)
hudakz 9:a156d3de5647 226 {
hudakz 9:a156d3de5647 227 if (appdata.packet_out != NOBLOCK) {
hudakz 11:647d53d146f1 228 size_t ret = UipEthernet::ethernet->enc28j60Eth.writePacket
hudakz 9:a156d3de5647 229 (
hudakz 9:a156d3de5647 230 appdata.packet_out,
hudakz 9:a156d3de5647 231 appdata.out_pos,
hudakz 9:a156d3de5647 232 (uint8_t*)buffer,
hudakz 9:a156d3de5647 233 size
hudakz 9:a156d3de5647 234 );
hudakz 9:a156d3de5647 235 appdata.out_pos += ret;
hudakz 9:a156d3de5647 236 return ret;
hudakz 9:a156d3de5647 237 }
hudakz 9:a156d3de5647 238
hudakz 9:a156d3de5647 239 return 0;
hudakz 9:a156d3de5647 240 }
hudakz 9:a156d3de5647 241
hudakz 9:a156d3de5647 242 // Start processing the next available incoming packet
hudakz 9:a156d3de5647 243
hudakz 9:a156d3de5647 244 // Returns the size of the packet in bytes, or 0 if no packets are available
hudakz 9:a156d3de5647 245 int UdpSocket::parsePacket()
hudakz 9:a156d3de5647 246 {
hudakz 9:a156d3de5647 247 UipEthernet::ethernet->tick();
hudakz 9:a156d3de5647 248 #ifdef UIPETHERNET_DEBUG_UDP
hudakz 9:a156d3de5647 249 if (appdata.packet_in != NOBLOCK) {
hudakz 9:a156d3de5647 250 printf("udp parsePacket freeing previous packet: %d\r\n", appdata.packet_in);
hudakz 9:a156d3de5647 251 }
hudakz 9:a156d3de5647 252 #endif
hudakz 11:647d53d146f1 253 UipEthernet::ethernet->enc28j60Eth.freeBlock(appdata.packet_in);
hudakz 9:a156d3de5647 254
hudakz 9:a156d3de5647 255 appdata.packet_in = appdata.packet_next;
hudakz 9:a156d3de5647 256 appdata.packet_next = NOBLOCK;
hudakz 9:a156d3de5647 257
hudakz 9:a156d3de5647 258 #ifdef UIPETHERNET_DEBUG_UDP
hudakz 9:a156d3de5647 259 if (appdata.packet_in != NOBLOCK) {
hudakz 9:a156d3de5647 260 printf("udp parsePacket received packet: %d", appdata.packet_in);
hudakz 9:a156d3de5647 261 }
hudakz 9:a156d3de5647 262 #endif
hudakz 9:a156d3de5647 263
hudakz 11:647d53d146f1 264 int size = UipEthernet::ethernet->enc28j60Eth.blockSize(appdata.packet_in);
hudakz 9:a156d3de5647 265 #ifdef UIPETHERNET_DEBUG_UDP
hudakz 9:a156d3de5647 266 if (appdata.packet_in != NOBLOCK) {
hudakz 9:a156d3de5647 267 printf(", size: %d\r\n", size);
hudakz 9:a156d3de5647 268 }
hudakz 9:a156d3de5647 269 #endif
hudakz 9:a156d3de5647 270 return size;
hudakz 9:a156d3de5647 271 }
hudakz 9:a156d3de5647 272
hudakz 9:a156d3de5647 273 // Number of bytes remaining in the current packet
hudakz 14:7648334eb41b 274 size_t UdpSocket::available()
hudakz 9:a156d3de5647 275 {
hudakz 9:a156d3de5647 276 UipEthernet::ethernet->tick();
hudakz 11:647d53d146f1 277 return UipEthernet::ethernet->enc28j60Eth.blockSize(appdata.packet_in);
hudakz 9:a156d3de5647 278 }
hudakz 9:a156d3de5647 279
hudakz 14:7648334eb41b 280 // Read a single byte from the current packet. Returns -1 if no byte is available.
hudakz 9:a156d3de5647 281 int UdpSocket::read()
hudakz 9:a156d3de5647 282 {
hudakz 9:a156d3de5647 283 static unsigned char c;
hudakz 9:a156d3de5647 284 if (read(&c, 1) > 0) {
hudakz 9:a156d3de5647 285 return c;
hudakz 9:a156d3de5647 286 }
hudakz 9:a156d3de5647 287
hudakz 9:a156d3de5647 288 return -1;
hudakz 9:a156d3de5647 289 }
hudakz 9:a156d3de5647 290
hudakz 9:a156d3de5647 291 // Read up to len bytes from the current packet and place them into buffer
hudakz 9:a156d3de5647 292
hudakz 9:a156d3de5647 293 // Returns the number of bytes read, or 0 if none are available
hudakz 14:7648334eb41b 294 size_t UdpSocket::read(unsigned char* buffer, size_t len)
hudakz 9:a156d3de5647 295 {
hudakz 9:a156d3de5647 296 UipEthernet::ethernet->tick();
hudakz 9:a156d3de5647 297 if (appdata.packet_in != NOBLOCK) {
hudakz 11:647d53d146f1 298 memaddress read = UipEthernet::ethernet->enc28j60Eth.readPacket(appdata.packet_in, 0, buffer, len);
hudakz 11:647d53d146f1 299 if (read == UipEthernet::ethernet->enc28j60Eth.blockSize(appdata.packet_in)) {
hudakz 11:647d53d146f1 300 UipEthernet::ethernet->enc28j60Eth.freeBlock(appdata.packet_in);
hudakz 9:a156d3de5647 301 appdata.packet_in = NOBLOCK;
hudakz 9:a156d3de5647 302 }
hudakz 9:a156d3de5647 303 else
hudakz 11:647d53d146f1 304 UipEthernet::ethernet->enc28j60Eth.resizeBlock(appdata.packet_in, read);
hudakz 9:a156d3de5647 305 return read;
hudakz 9:a156d3de5647 306 }
hudakz 9:a156d3de5647 307
hudakz 9:a156d3de5647 308 return 0;
hudakz 9:a156d3de5647 309 }
hudakz 9:a156d3de5647 310
hudakz 9:a156d3de5647 311 // Return the next byte from the current packet without moving on to the next byte
hudakz 9:a156d3de5647 312 int UdpSocket::peek()
hudakz 9:a156d3de5647 313 {
hudakz 9:a156d3de5647 314 UipEthernet::ethernet->tick();
hudakz 9:a156d3de5647 315 if (appdata.packet_in != NOBLOCK) {
hudakz 9:a156d3de5647 316 unsigned char c;
hudakz 11:647d53d146f1 317 if (UipEthernet::ethernet->enc28j60Eth.readPacket(appdata.packet_in, 0, &c, 1) == 1)
hudakz 9:a156d3de5647 318 return c;
hudakz 9:a156d3de5647 319 }
hudakz 9:a156d3de5647 320
hudakz 9:a156d3de5647 321 return -1;
hudakz 9:a156d3de5647 322 }
hudakz 9:a156d3de5647 323
hudakz 9:a156d3de5647 324 // Finish reading the current packet
hudakz 9:a156d3de5647 325 void UdpSocket::flush()
hudakz 9:a156d3de5647 326 {
hudakz 9:a156d3de5647 327 UipEthernet::ethernet->tick();
hudakz 11:647d53d146f1 328 UipEthernet::ethernet->enc28j60Eth.freeBlock(appdata.packet_in);
hudakz 9:a156d3de5647 329 appdata.packet_in = NOBLOCK;
hudakz 9:a156d3de5647 330 }
hudakz 9:a156d3de5647 331
hudakz 9:a156d3de5647 332 // Return the IP address of the host who sent the current incoming packet
hudakz 9:a156d3de5647 333 IpAddress UdpSocket::remoteIP()
hudakz 9:a156d3de5647 334 {
hudakz 9:a156d3de5647 335 return _uip_udp_conn ? ip_addr_uip(_uip_udp_conn->ripaddr) : IpAddress();
hudakz 9:a156d3de5647 336 }
hudakz 9:a156d3de5647 337
hudakz 9:a156d3de5647 338 // Return the port of the host who sent the current incoming packet
hudakz 9:a156d3de5647 339 uint16_t UdpSocket::remotePort()
hudakz 9:a156d3de5647 340 {
hudakz 9:a156d3de5647 341 return _uip_udp_conn ? ntohs(_uip_udp_conn->rport) : 0;
hudakz 9:a156d3de5647 342 }
hudakz 9:a156d3de5647 343
hudakz 9:a156d3de5647 344 // UIP callback function
hudakz 9:a156d3de5647 345 void uipudp_appcall()
hudakz 9:a156d3de5647 346 {
hudakz 9:a156d3de5647 347 if (uip_udp_userdata_t * data = (uip_udp_userdata_t *) (uip_udp_conn->appstate)) {
hudakz 9:a156d3de5647 348 if (uip_newdata()) {
hudakz 9:a156d3de5647 349 if (data->packet_next == NOBLOCK) {
hudakz 9:a156d3de5647 350 uip_udp_conn->rport = UDPBUF->srcport;
hudakz 9:a156d3de5647 351 uip_ipaddr_copy(uip_udp_conn->ripaddr, UDPBUF->srcipaddr);
hudakz 11:647d53d146f1 352 data->packet_next = UipEthernet::ethernet->enc28j60Eth.allocBlock(ntohs(UDPBUF->udplen) - UIP_UDPH_LEN);
hudakz 9:a156d3de5647 353
hudakz 9:a156d3de5647 354 //if we are unable to allocate memory the packet is dropped. udp doesn't guarantee packet delivery
hudakz 9:a156d3de5647 355 if (data->packet_next != NOBLOCK) {
hudakz 9:a156d3de5647 356 //discard Linklevel and IP and udp-header and any trailing bytes:
hudakz 11:647d53d146f1 357 UipEthernet::ethernet->enc28j60Eth.copyPacket
hudakz 9:a156d3de5647 358 (
hudakz 9:a156d3de5647 359 data->packet_next,
hudakz 9:a156d3de5647 360 0,
hudakz 9:a156d3de5647 361 UipEthernet::inPacket,
hudakz 9:a156d3de5647 362 UIP_UDP_PHYH_LEN,
hudakz 11:647d53d146f1 363 UipEthernet::ethernet->enc28j60Eth.blockSize(data->packet_next)
hudakz 9:a156d3de5647 364 );
hudakz 9:a156d3de5647 365 #ifdef UIPETHERNET_DEBUG_UDP
hudakz 9:a156d3de5647 366 printf
hudakz 9:a156d3de5647 367 (
hudakz 9:a156d3de5647 368 "udp, uip_newdata received packet: %d, size: %d\r\n",
hudakz 9:a156d3de5647 369 data->packet_next,
hudakz 15:53715cc81c63 370 UipEthernet::ethernet->enc28j60Eth.blockSize(data->packet_next)
hudakz 9:a156d3de5647 371 );
hudakz 9:a156d3de5647 372 #endif
hudakz 9:a156d3de5647 373 }
hudakz 9:a156d3de5647 374 }
hudakz 9:a156d3de5647 375 }
hudakz 9:a156d3de5647 376
hudakz 9:a156d3de5647 377 if (uip_poll() && data->send)
hudakz 9:a156d3de5647 378 {
hudakz 9:a156d3de5647 379 //set uip_slen (uip private) by calling uip_udp_send
hudakz 9:a156d3de5647 380 #ifdef UIPETHERNET_DEBUG_UDP
hudakz 9:a156d3de5647 381 printf
hudakz 9:a156d3de5647 382 (
hudakz 9:a156d3de5647 383 "udp, uip_poll preparing packet to send: %d, size: %d\r\n",
hudakz 9:a156d3de5647 384 data->packet_out,
hudakz 15:53715cc81c63 385 UipEthernet::ethernet->enc28j60Eth.blockSize(data->packet_out)
hudakz 9:a156d3de5647 386 );
hudakz 9:a156d3de5647 387 #endif
hudakz 9:a156d3de5647 388 UipEthernet::uipPacket = data->packet_out;
hudakz 9:a156d3de5647 389 UipEthernet::uipHeaderLen = UIP_UDP_PHYH_LEN;
hudakz 9:a156d3de5647 390 uip_udp_send(data->out_pos - (UIP_UDP_PHYH_LEN));
hudakz 9:a156d3de5647 391 }
hudakz 9:a156d3de5647 392 }
hudakz 9:a156d3de5647 393 }
hudakz 9:a156d3de5647 394
hudakz 9:a156d3de5647 395 /**
hudakz 9:a156d3de5647 396 * @brief
hudakz 9:a156d3de5647 397 * @note
hudakz 9:a156d3de5647 398 * @param
hudakz 9:a156d3de5647 399 * @retval
hudakz 9:a156d3de5647 400 */
hudakz 9:a156d3de5647 401 void UdpSocket::_send(uip_udp_userdata_t* data)
hudakz 9:a156d3de5647 402 {
hudakz 9:a156d3de5647 403 uip_arp_out(); //add arp
hudakz 9:a156d3de5647 404 if (uip_len == UIP_ARPHDRSIZE) {
hudakz 9:a156d3de5647 405 UipEthernet::uipPacket = NOBLOCK;
hudakz 9:a156d3de5647 406 UipEthernet::packetState &= ~UIPETHERNET_SENDPACKET;
hudakz 9:a156d3de5647 407 #ifdef UIPETHERNET_DEBUG_UDP
hudakz 9:a156d3de5647 408 printf("udp, uip_poll results in ARP-packet\r\n");
hudakz 9:a156d3de5647 409 #endif
hudakz 9:a156d3de5647 410 }
hudakz 9:a156d3de5647 411 else {
hudakz 9:a156d3de5647 412 //arp found ethaddr for ip (otherwise packet is replaced by arp-request)
hudakz 9:a156d3de5647 413 data->send = false;
hudakz 9:a156d3de5647 414 data->packet_out = NOBLOCK;
hudakz 9:a156d3de5647 415 UipEthernet::packetState |= UIPETHERNET_SENDPACKET;
hudakz 9:a156d3de5647 416 #ifdef UIPETHERNET_DEBUG_UDP
hudakz 15:53715cc81c63 417 printf("udp, uip_packet to send: %d\r\n", UipEthernet::uipPacket);
hudakz 9:a156d3de5647 418 #endif
hudakz 9:a156d3de5647 419 }
hudakz 9:a156d3de5647 420
hudakz 9:a156d3de5647 421 UipEthernet::ethernet->network_send();
hudakz 9:a156d3de5647 422 }
hudakz 9:a156d3de5647 423 #endif
hudakz 14:7648334eb41b 424
hudakz 14:7648334eb41b 425 /**
hudakz 14:7648334eb41b 426 * @brief
hudakz 14:7648334eb41b 427 * @note
hudakz 14:7648334eb41b 428 * @param
hudakz 14:7648334eb41b 429 * @retval
hudakz 14:7648334eb41b 430 */
hudakz 14:7648334eb41b 431 nsapi_size_or_error_t UdpSocket::sendto(const char* host, uint16_t port, const void* data, size_t size)
hudakz 14:7648334eb41b 432 {
hudakz 14:7648334eb41b 433 DnsClient dns;
hudakz 14:7648334eb41b 434 IpAddress address;
hudakz 14:7648334eb41b 435 uint32_t address_bytes;
hudakz 14:7648334eb41b 436
hudakz 14:7648334eb41b 437 dns.begin(UipEthernet::ethernet->dnsServerIP());
hudakz 14:7648334eb41b 438 if (dns.getHostByName(host, address) == 1) {
hudakz 14:7648334eb41b 439 address_bytes = address;
hudakz 14:7648334eb41b 440 _remote_addr = SocketAddress(&address_bytes, NSAPI_IPv4, port);
hudakz 14:7648334eb41b 441 }
hudakz 14:7648334eb41b 442 else {
hudakz 14:7648334eb41b 443 _remote_addr = SocketAddress(host, port);
hudakz 14:7648334eb41b 444 }
hudakz 14:7648334eb41b 445
hudakz 14:7648334eb41b 446 if (beginPacket(host, port) == 0) {
hudakz 14:7648334eb41b 447 stop();
hudakz 14:7648334eb41b 448 return NSAPI_ERROR_NO_ADDRESS;
hudakz 14:7648334eb41b 449 }
hudakz 14:7648334eb41b 450
hudakz 14:7648334eb41b 451 if (write((uint8_t*)data, size) == 0) {
hudakz 14:7648334eb41b 452 stop();
hudakz 14:7648334eb41b 453 return NSAPI_ERROR_WOULD_BLOCK;
hudakz 14:7648334eb41b 454 };
hudakz 14:7648334eb41b 455
hudakz 14:7648334eb41b 456 if (endPacket() <= 0) {
hudakz 14:7648334eb41b 457 stop();
hudakz 14:7648334eb41b 458 return NSAPI_ERROR_WOULD_BLOCK;
hudakz 14:7648334eb41b 459 }
hudakz 14:7648334eb41b 460
hudakz 14:7648334eb41b 461 return NSAPI_ERROR_OK;
hudakz 14:7648334eb41b 462 }
hudakz 14:7648334eb41b 463
hudakz 14:7648334eb41b 464 /**
hudakz 14:7648334eb41b 465 * @brief
hudakz 14:7648334eb41b 466 * @note
hudakz 14:7648334eb41b 467 * @param
hudakz 14:7648334eb41b 468 * @retval
hudakz 14:7648334eb41b 469 */
hudakz 14:7648334eb41b 470 nsapi_size_or_error_t UdpSocket::sendto(const SocketAddress& address, const void* data, size_t size)
hudakz 14:7648334eb41b 471 {
hudakz 14:7648334eb41b 472 IpAddress ip_addr(address.get_addr().bytes);
hudakz 14:7648334eb41b 473 uint16_t port = address.get_port();
hudakz 14:7648334eb41b 474
hudakz 14:7648334eb41b 475 _remote_addr = address;
hudakz 14:7648334eb41b 476
hudakz 14:7648334eb41b 477 if (beginPacket(ip_addr, port) == 0) {
hudakz 14:7648334eb41b 478 stop();
hudakz 14:7648334eb41b 479 return NSAPI_ERROR_NO_ADDRESS;
hudakz 14:7648334eb41b 480 }
hudakz 14:7648334eb41b 481
hudakz 14:7648334eb41b 482 if (write((uint8_t*)data, size) == 0) {
hudakz 14:7648334eb41b 483 stop();
hudakz 14:7648334eb41b 484 return NSAPI_ERROR_WOULD_BLOCK;
hudakz 14:7648334eb41b 485 };
hudakz 14:7648334eb41b 486
hudakz 14:7648334eb41b 487 if (endPacket() <= 0) {
hudakz 14:7648334eb41b 488 stop();
hudakz 14:7648334eb41b 489 return NSAPI_ERROR_WOULD_BLOCK;
hudakz 14:7648334eb41b 490 }
hudakz 14:7648334eb41b 491
hudakz 14:7648334eb41b 492 return NSAPI_ERROR_OK;
hudakz 14:7648334eb41b 493 }
hudakz 14:7648334eb41b 494
hudakz 14:7648334eb41b 495 /**
hudakz 14:7648334eb41b 496 * @brief
hudakz 14:7648334eb41b 497 * @note
hudakz 14:7648334eb41b 498 * @param
hudakz 14:7648334eb41b 499 * @retval
hudakz 14:7648334eb41b 500 */
hudakz 14:7648334eb41b 501 nsapi_size_or_error_t UdpSocket::recvfrom(SocketAddress* address, void* data, size_t size)
hudakz 14:7648334eb41b 502 {
hudakz 14:7648334eb41b 503 *address = _remote_addr;
hudakz 14:7648334eb41b 504
hudakz 14:7648334eb41b 505 Timer timer;
hudakz 14:7648334eb41b 506 int success;
hudakz 14:7648334eb41b 507
hudakz 14:7648334eb41b 508 timer.start();
hudakz 14:7648334eb41b 509 do {
hudakz 14:7648334eb41b 510 success = parsePacket();
hudakz 14:7648334eb41b 511 } while (!success && (timer.read_ms() < _timeout_ms));
hudakz 14:7648334eb41b 512
hudakz 14:7648334eb41b 513 if (!success) {
hudakz 14:7648334eb41b 514 stop();
hudakz 14:7648334eb41b 515 return NSAPI_ERROR_WOULD_BLOCK;
hudakz 14:7648334eb41b 516 }
hudakz 14:7648334eb41b 517
hudakz 14:7648334eb41b 518 size_t n;
hudakz 14:7648334eb41b 519 size_t recv_count = 0;
hudakz 14:7648334eb41b 520 uint8_t* pos = (uint8_t*)data;
hudakz 14:7648334eb41b 521
hudakz 14:7648334eb41b 522 do {
hudakz 14:7648334eb41b 523 if (recv_count + available() <= size) {
hudakz 14:7648334eb41b 524 n = read(pos, available());
hudakz 14:7648334eb41b 525 pos += n;
hudakz 14:7648334eb41b 526 recv_count += n;
hudakz 14:7648334eb41b 527 }
hudakz 14:7648334eb41b 528 else {
hudakz 14:7648334eb41b 529 return NSAPI_ERROR_NO_MEMORY;
hudakz 14:7648334eb41b 530 }
hudakz 14:7648334eb41b 531 } while ((available() > 0) && (recv_count < size));
hudakz 14:7648334eb41b 532
hudakz 14:7648334eb41b 533 flush();
hudakz 14:7648334eb41b 534
hudakz 14:7648334eb41b 535 return NSAPI_ERROR_OK;
hudakz 14:7648334eb41b 536 }