cassyarduino cassyarduino / UIPEthernet

UIPEthernet library for Arduino IDE, Eclipse with arduino plugin and MBED/SMeshStudio (AVR,STM32F,ESP8266,Intel ARC32,Nordic nRF51,Teensy boards,Realtek Ameba(RTL8195A,RTL8710)), ENC28j60 network chip. Compatible with Wiznet W5100 Ethernet library API. Compiled and tested on Nucleo-F302R8. Master repository is: https://github.com/UIPEthernet/UIPEthernet/

examples/AdvancedChatServer/AdvancedChatServer.ino@32:e77cbe3783e5, 2017-02-10 (annotated)

Committer:
cassyarduino
Date:
Fri Feb 10 09:10:47 2017 +0100
Revision:
32:e77cbe3783e5
Parent:
11:3fb19220d9ec 
Changes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cassyarduino 0:e3fb1267e3c3 1 /*
cassyarduino 0:e3fb1267e3c3 2 Advanced Chat Server
cassyarduino 0:e3fb1267e3c3 3
cassyarduino 0:e3fb1267e3c3 4 A simple server that distributes any incoming messages to all
cassyarduino 0:e3fb1267e3c3 5 connected clients but the client the message comes from.
cassyarduino 0:e3fb1267e3c3 6 To use telnet to your device's IP address and type.
cassyarduino 0:e3fb1267e3c3 7 You can see the client's input in the serial monitor as well.
cassyarduino 0:e3fb1267e3c3 8 Using an Arduino Wiznet Ethernet shield.
cassyarduino 0:e3fb1267e3c3 9
cassyarduino 0:e3fb1267e3c3 10 Circuit:
cassyarduino 0:e3fb1267e3c3 11 * Ethernet shield attached to pins 10, 11, 12, 13
cassyarduino 0:e3fb1267e3c3 12 * Analog inputs attached to pins A0 through A5 (optional)
cassyarduino 0:e3fb1267e3c3 13
cassyarduino 0:e3fb1267e3c3 14 created 18 Dec 2009
cassyarduino 0:e3fb1267e3c3 15 by David A. Mellis
cassyarduino 0:e3fb1267e3c3 16 modified 9 Apr 2012
cassyarduino 0:e3fb1267e3c3 17 by Tom Igoe
cassyarduino 0:e3fb1267e3c3 18 redesigned to make use of operator== 25 Nov 2013
cassyarduino 0:e3fb1267e3c3 19 by Norbert Truchsess
cassyarduino 0:e3fb1267e3c3 20
cassyarduino 0:e3fb1267e3c3 21 */
cassyarduino 0:e3fb1267e3c3 22
cassyarduino 32:e77cbe3783e5 23 // Enter a MAC address and IP address for your controller below.
cassyarduino 32:e77cbe3783e5 24 // The IP address will be dependent on your local network.
cassyarduino 32:e77cbe3783e5 25
cassyarduino 32:e77cbe3783e5 26 #define MACADDRESS 0x00,0x01,0x02,0x03,0x04,0x05
cassyarduino 32:e77cbe3783e5 27 #define MYIPADDR 192,168,1,6
cassyarduino 32:e77cbe3783e5 28 #define MYIPMASK 255,255,255,0
cassyarduino 32:e77cbe3783e5 29 #define MYDNS 192,168,1,1
cassyarduino 32:e77cbe3783e5 30 #define MYGW 192,168,1,1
cassyarduino 32:e77cbe3783e5 31 // telnet defaults to port 23
cassyarduino 32:e77cbe3783e5 32 #define LISTENPORT 23
cassyarduino 32:e77cbe3783e5 33 #define UARTBAUD 115200
cassyarduino 32:e77cbe3783e5 34
cassyarduino 11:3fb19220d9ec 35 #if defined(__MBED__)
cassyarduino 11:3fb19220d9ec 36 #include <mbed.h>
cassyarduino 11:3fb19220d9ec 37 #include "mbed/millis.h"
cassyarduino 11:3fb19220d9ec 38 #define delay(x) wait_ms(x)
cassyarduino 11:3fb19220d9ec 39 #define PROGMEM
cassyarduino 11:3fb19220d9ec 40 #include "mbed/Print.h"
cassyarduino 11:3fb19220d9ec 41 #endif
cassyarduino 11:3fb19220d9ec 42
cassyarduino 0:e3fb1267e3c3 43 #include <UIPEthernet.h>
cassyarduino 0:e3fb1267e3c3 44 #include <utility/logging.h>
cassyarduino 0:e3fb1267e3c3 45
cassyarduino 32:e77cbe3783e5 46 uint8_t mac[6] = {MACADDRESS};
cassyarduino 32:e77cbe3783e5 47 uint8_t myIP[4] = {MYIPADDR};
cassyarduino 32:e77cbe3783e5 48 uint8_t myMASK[4] = {MYIPMASK};
cassyarduino 32:e77cbe3783e5 49 uint8_t myDNS[4] = {MYDNS};
cassyarduino 32:e77cbe3783e5 50 uint8_t myGW[4] = {MYGW};
cassyarduino 0:e3fb1267e3c3 51
cassyarduino 32:e77cbe3783e5 52 EthernetServer server(LISTENPORT);
cassyarduino 0:e3fb1267e3c3 53
cassyarduino 0:e3fb1267e3c3 54 EthernetClient clients[4];
cassyarduino 0:e3fb1267e3c3 55
cassyarduino 11:3fb19220d9ec 56 #if defined(ARDUINO)
cassyarduino 0:e3fb1267e3c3 57 void setup() {
cassyarduino 11:3fb19220d9ec 58 #endif
cassyarduino 11:3fb19220d9ec 59 #if defined(__MBED__)
cassyarduino 11:3fb19220d9ec 60 int main() {
cassyarduino 11:3fb19220d9ec 61 #endif
cassyarduino 0:e3fb1267e3c3 62 // initialize the ethernet device
cassyarduino 32:e77cbe3783e5 63 //Ethernet.begin(mac,myIP);
cassyarduino 32:e77cbe3783e5 64 Ethernet.begin(mac,myIP,myDNS,myGW,myMASK);
cassyarduino 0:e3fb1267e3c3 65 // start listening for clients
cassyarduino 0:e3fb1267e3c3 66 server.begin();
cassyarduino 0:e3fb1267e3c3 67 // Open serial communications and wait for port to open:
cassyarduino 0:e3fb1267e3c3 68 #if ACTLOGLEVEL>LOG_NONE
cassyarduino 11:3fb19220d9ec 69
cassyarduino 11:3fb19220d9ec 70 #if defined(ARDUINO)
cassyarduino 32:e77cbe3783e5 71 LogObject.begin(UARTBAUD);
cassyarduino 11:3fb19220d9ec 72 #endif
cassyarduino 11:3fb19220d9ec 73 #if defined(__MBED__)
cassyarduino 11:3fb19220d9ec 74 Serial LogObject(SERIAL_TX,SERIAL_RX);
cassyarduino 32:e77cbe3783e5 75 LogObject.baud(UARTBAUD);
cassyarduino 11:3fb19220d9ec 76 #endif
cassyarduino 0:e3fb1267e3c3 77 while (!LogObject)
cassyarduino 0:e3fb1267e3c3 78 {
cassyarduino 0:e3fb1267e3c3 79 ; // wait for serial port to connect. Needed for Leonardo only
cassyarduino 0:e3fb1267e3c3 80 }
cassyarduino 0:e3fb1267e3c3 81 #endif
cassyarduino 0:e3fb1267e3c3 82
cassyarduino 0:e3fb1267e3c3 83 #if ACTLOGLEVEL>=LOG_INFO
cassyarduino 32:e77cbe3783e5 84 LogObject.uart_send_str(F("Chat server listen on:"));
cassyarduino 11:3fb19220d9ec 85 #if defined(ARDUINO)
cassyarduino 32:e77cbe3783e5 86 LogObject.print(Ethernet.localIP()[0]);
cassyarduino 32:e77cbe3783e5 87 LogObject.print(F("."));
cassyarduino 32:e77cbe3783e5 88 LogObject.print(Ethernet.localIP()[1]);
cassyarduino 32:e77cbe3783e5 89 LogObject.print(F("."));
cassyarduino 32:e77cbe3783e5 90 LogObject.print(Ethernet.localIP()[2]);
cassyarduino 32:e77cbe3783e5 91 LogObject.print(F("."));
cassyarduino 32:e77cbe3783e5 92 LogObject.print(Ethernet.localIP()[3]);
cassyarduino 32:e77cbe3783e5 93 LogObject.print(F(":"));
cassyarduino 32:e77cbe3783e5 94 LogObject.println(LISTENPORT);
cassyarduino 11:3fb19220d9ec 95 #endif
cassyarduino 11:3fb19220d9ec 96 #if defined(__MBED__)
cassyarduino 32:e77cbe3783e5 97 LogObject.printf("%d.%d.%d.%d:%d\r\n",Ethernet.localIP()[0],Ethernet.localIP()[1],Ethernet.localIP()[2],Ethernet.localIP()[3],LISTENPORT);
cassyarduino 11:3fb19220d9ec 98 #endif
cassyarduino 0:e3fb1267e3c3 99 #endif
cassyarduino 11:3fb19220d9ec 100
cassyarduino 11:3fb19220d9ec 101 #if defined(ARDUINO)
cassyarduino 0:e3fb1267e3c3 102 }
cassyarduino 0:e3fb1267e3c3 103
cassyarduino 0:e3fb1267e3c3 104 void loop() {
cassyarduino 11:3fb19220d9ec 105 #endif
cassyarduino 11:3fb19220d9ec 106
cassyarduino 11:3fb19220d9ec 107 #if defined(__MBED__)
cassyarduino 11:3fb19220d9ec 108 while(true) {
cassyarduino 11:3fb19220d9ec 109 #endif
cassyarduino 0:e3fb1267e3c3 110 // wait for a new client:
cassyarduino 0:e3fb1267e3c3 111 EthernetClient client = server.available();
cassyarduino 0:e3fb1267e3c3 112
cassyarduino 32:e77cbe3783e5 113 if (client)
cassyarduino 32:e77cbe3783e5 114 {
cassyarduino 32:e77cbe3783e5 115 //check whether this client refers to the same socket as one of the existing instances:
cassyarduino 0:e3fb1267e3c3 116 bool newClient = true;
cassyarduino 32:e77cbe3783e5 117 uint8_t i=0;
cassyarduino 32:e77cbe3783e5 118 while ((i<4) && (clients[i]!=client))
cassyarduino 32:e77cbe3783e5 119 {i++;}
cassyarduino 32:e77cbe3783e5 120 if (i<4) {newClient = false;}
cassyarduino 0:e3fb1267e3c3 121
cassyarduino 32:e77cbe3783e5 122 if (newClient)
cassyarduino 32:e77cbe3783e5 123 {
cassyarduino 32:e77cbe3783e5 124 #if ACTLOGLEVEL>=LOG_INFO
cassyarduino 32:e77cbe3783e5 125 LogObject.uart_send_strln(F("New client try connect"));
cassyarduino 32:e77cbe3783e5 126 #endif
cassyarduino 32:e77cbe3783e5 127 //Search unused client:
cassyarduino 32:e77cbe3783e5 128 uint8_t j=0;
cassyarduino 32:e77cbe3783e5 129 while ((j<4) && (clients[j]))
cassyarduino 32:e77cbe3783e5 130 {j++;}
cassyarduino 32:e77cbe3783e5 131 if (j>=4)
cassyarduino 32:e77cbe3783e5 132 {
cassyarduino 32:e77cbe3783e5 133 #if ACTLOGLEVEL>=LOG_INFO
cassyarduino 32:e77cbe3783e5 134 LogObject.uart_send_strln(F("Too many client"));
cassyarduino 32:e77cbe3783e5 135 #endif
cassyarduino 32:e77cbe3783e5 136 client.stop();
cassyarduino 32:e77cbe3783e5 137 }
cassyarduino 32:e77cbe3783e5 138 else
cassyarduino 32:e77cbe3783e5 139 {
cassyarduino 32:e77cbe3783e5 140 #if ACTLOGLEVEL>=LOG_INFO
cassyarduino 32:e77cbe3783e5 141 LogObject.uart_send_str(F("Save client to ID:"));
cassyarduino 32:e77cbe3783e5 142 LogObject.uart_send_decln(j);
cassyarduino 32:e77cbe3783e5 143 #endif
cassyarduino 32:e77cbe3783e5 144 clients[j] = client;
cassyarduino 32:e77cbe3783e5 145 // clead out the input buffer:
cassyarduino 32:e77cbe3783e5 146 client.flush();
cassyarduino 32:e77cbe3783e5 147 #if ACTLOGLEVEL>=LOG_INFO
cassyarduino 32:e77cbe3783e5 148 LogObject.uart_send_strln(F("We have a new client"));
cassyarduino 32:e77cbe3783e5 149 #endif
cassyarduino 32:e77cbe3783e5 150 client.println(F("Hello, client!"));
cassyarduino 32:e77cbe3783e5 151 client.print(F("my IP: "));
cassyarduino 32:e77cbe3783e5 152 client.println(Ethernet.localIP());
cassyarduino 0:e3fb1267e3c3 153 }
cassyarduino 0:e3fb1267e3c3 154 }
cassyarduino 0:e3fb1267e3c3 155
cassyarduino 32:e77cbe3783e5 156 if (client.available() > 0)
cassyarduino 32:e77cbe3783e5 157 {
cassyarduino 32:e77cbe3783e5 158 i=0;
cassyarduino 32:e77cbe3783e5 159 while ((i<4) && (clients[i]!=client))
cassyarduino 32:e77cbe3783e5 160 {i++;}
cassyarduino 32:e77cbe3783e5 161 #if ACTLOGLEVEL>=LOG_INFO
cassyarduino 32:e77cbe3783e5 162 LogObject.uart_send_str(F("Message received from client ID:"));
cassyarduino 32:e77cbe3783e5 163 LogObject.uart_send_decln(i);
cassyarduino 32:e77cbe3783e5 164 #endif
cassyarduino 0:e3fb1267e3c3 165 // read the bytes incoming from the client:
cassyarduino 0:e3fb1267e3c3 166 char thisChar = client.read();
cassyarduino 0:e3fb1267e3c3 167 // echo the bytes back to all other connected clients:
cassyarduino 32:e77cbe3783e5 168 for (uint8_t j=0;j<4;j++)
cassyarduino 32:e77cbe3783e5 169 {
cassyarduino 32:e77cbe3783e5 170 if (clients[j] && clients[j]!=client)
cassyarduino 32:e77cbe3783e5 171 {
cassyarduino 32:e77cbe3783e5 172 #if ACTLOGLEVEL>=LOG_INFO
cassyarduino 32:e77cbe3783e5 173 LogObject.uart_send_str(F("Message forwarded to client ID:"));
cassyarduino 32:e77cbe3783e5 174 LogObject.uart_send_decln(j);
cassyarduino 32:e77cbe3783e5 175 #endif
cassyarduino 32:e77cbe3783e5 176 clients[j].write(thisChar);
cassyarduino 32:e77cbe3783e5 177 }
cassyarduino 0:e3fb1267e3c3 178 }
cassyarduino 0:e3fb1267e3c3 179 // echo the bytes to the server as well:
cassyarduino 0:e3fb1267e3c3 180 #if ACTLOGLEVEL>=LOG_INFO
cassyarduino 11:3fb19220d9ec 181 #if defined(ARDUINO)
cassyarduino 11:3fb19220d9ec 182 LogObject.write(thisChar);
cassyarduino 11:3fb19220d9ec 183 #endif
cassyarduino 11:3fb19220d9ec 184 #if defined(__MBED__)
cassyarduino 11:3fb19220d9ec 185 LogObject.putc(thisChar);
cassyarduino 11:3fb19220d9ec 186 #endif
cassyarduino 0:e3fb1267e3c3 187 #endif
cassyarduino 0:e3fb1267e3c3 188 }
cassyarduino 0:e3fb1267e3c3 189 }
cassyarduino 11:3fb19220d9ec 190 for (uint8_t i=0;i<4;i++) {
cassyarduino 0:e3fb1267e3c3 191 if (!(clients[i].connected())) {
cassyarduino 0:e3fb1267e3c3 192 // client.stop() invalidates the internal socket-descriptor, so next use of == will allways return false;
cassyarduino 0:e3fb1267e3c3 193 clients[i].stop();
cassyarduino 0:e3fb1267e3c3 194 }
cassyarduino 0:e3fb1267e3c3 195 }
cassyarduino 0:e3fb1267e3c3 196 }
cassyarduino 11:3fb19220d9ec 197
cassyarduino 11:3fb19220d9ec 198 #if defined(__MBED__)
cassyarduino 11:3fb19220d9ec 199 }
cassyarduino 11:3fb19220d9ec 200 #endif