File size: 5,395 Bytes
a9536d3 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 | /* Copyright 2018 Paul Stoffregen
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this
* software and associated documentation files (the "Software"), to deal in the Software
* without restriction, including without limitation the rights to use, copy, modify,
* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <Arduino.h>
#include "Ethernet.h"
#include "utility/w5100.h"
uint16_t EthernetServer::server_port[MAX_SOCK_NUM];
void EthernetServer::begin()
{
uint8_t sockindex = Ethernet.socketBegin(SnMR::TCP, _port);
if (sockindex < MAX_SOCK_NUM) {
if (Ethernet.socketListen(sockindex)) {
server_port[sockindex] = _port;
} else {
Ethernet.socketDisconnect(sockindex);
}
}
}
EthernetClient EthernetServer::available()
{
bool listening = false;
uint8_t sockindex = MAX_SOCK_NUM;
uint8_t chip, maxindex=MAX_SOCK_NUM;
chip = W5100.getChip();
if (!chip) return EthernetClient(MAX_SOCK_NUM);
#if MAX_SOCK_NUM > 4
if (chip == 51) maxindex = 4; // W5100 chip never supports more than 4 sockets
#endif
for (uint8_t i=0; i < maxindex; i++) {
if (server_port[i] == _port) {
uint8_t stat = Ethernet.socketStatus(i);
if (stat == SnSR::ESTABLISHED || stat == SnSR::CLOSE_WAIT) {
if (Ethernet.socketRecvAvailable(i) > 0) {
sockindex = i;
} else {
// remote host closed connection, our end still open
if (stat == SnSR::CLOSE_WAIT) {
Ethernet.socketDisconnect(i);
// status becomes LAST_ACK for short time
}
}
} else if (stat == SnSR::LISTEN) {
listening = true;
} else if (stat == SnSR::CLOSED) {
server_port[i] = 0;
}
}
}
if (!listening) begin();
return EthernetClient(sockindex);
}
EthernetClient EthernetServer::accept()
{
bool listening = false;
uint8_t sockindex = MAX_SOCK_NUM;
uint8_t chip, maxindex=MAX_SOCK_NUM;
chip = W5100.getChip();
if (!chip) return EthernetClient(MAX_SOCK_NUM);
#if MAX_SOCK_NUM > 4
if (chip == 51) maxindex = 4; // W5100 chip never supports more than 4 sockets
#endif
for (uint8_t i=0; i < maxindex; i++) {
if (server_port[i] == _port) {
uint8_t stat = Ethernet.socketStatus(i);
if (sockindex == MAX_SOCK_NUM &&
(stat == SnSR::ESTABLISHED || stat == SnSR::CLOSE_WAIT)) {
// Return the connected client even if no data received.
// Some protocols like FTP expect the server to send the
// first data.
sockindex = i;
server_port[i] = 0; // only return the client once
} else if (stat == SnSR::LISTEN) {
listening = true;
} else if (stat == SnSR::CLOSED) {
server_port[i] = 0;
}
}
}
if (!listening) begin();
return EthernetClient(sockindex);
}
EthernetServer::operator bool()
{
uint8_t maxindex=MAX_SOCK_NUM;
#if MAX_SOCK_NUM > 4
if (W5100.getChip() == 51) maxindex = 4; // W5100 chip never supports more than 4 sockets
#endif
for (uint8_t i=0; i < maxindex; i++) {
if (server_port[i] == _port) {
if (Ethernet.socketStatus(i) == SnSR::LISTEN) {
return true; // server is listening for incoming clients
}
}
}
return false;
}
#if 0
void EthernetServer::statusreport()
{
Serial.printf("EthernetServer, port=%d\n", _port);
for (uint8_t i=0; i < MAX_SOCK_NUM; i++) {
uint16_t port = server_port[i];
uint8_t stat = Ethernet.socketStatus(i);
const char *name;
switch (stat) {
case 0x00: name = "CLOSED"; break;
case 0x13: name = "INIT"; break;
case 0x14: name = "LISTEN"; break;
case 0x15: name = "SYNSENT"; break;
case 0x16: name = "SYNRECV"; break;
case 0x17: name = "ESTABLISHED"; break;
case 0x18: name = "FIN_WAIT"; break;
case 0x1A: name = "CLOSING"; break;
case 0x1B: name = "TIME_WAIT"; break;
case 0x1C: name = "CLOSE_WAIT"; break;
case 0x1D: name = "LAST_ACK"; break;
case 0x22: name = "UDP"; break;
case 0x32: name = "IPRAW"; break;
case 0x42: name = "MACRAW"; break;
case 0x5F: name = "PPPOE"; break;
default: name = "???";
}
int avail = Ethernet.socketRecvAvailable(i);
Serial.printf(" %d: port=%d, status=%s (0x%02X), avail=%d\n",
i, port, name, stat, avail);
}
}
#endif
size_t EthernetServer::write(uint8_t b)
{
return write(&b, 1);
}
size_t EthernetServer::write(const uint8_t *buffer, size_t size)
{
uint8_t chip, maxindex=MAX_SOCK_NUM;
chip = W5100.getChip();
if (!chip) return 0;
#if MAX_SOCK_NUM > 4
if (chip == 51) maxindex = 4; // W5100 chip never supports more than 4 sockets
#endif
available();
for (uint8_t i=0; i < maxindex; i++) {
if (server_port[i] == _port) {
if (Ethernet.socketStatus(i) == SnSR::ESTABLISHED) {
Ethernet.socketSend(i, buffer, size);
}
}
}
return size;
}
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