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revert Chatserver example, create new AdvancedChatServer based on it

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ntruchsess
2013-11-28 09:43:46 +01:00
parent a27604f59e
commit b5c500f5b4
2 changed files with 94 additions and 47 deletions
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62
libraries/Ethernet/examples/ChatServer/ChatServer.ino
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@ -2,8 +2,7 @@
Chat Server
A simple server that distributes any incoming messages to all
connected clients but the client the message comes from.
To use telnet to your device's IP address and type.
connected clients. To use telnet to your device's IP address and type.
You can see the client's input in the serial monitor as well.
Using an Arduino Wiznet Ethernet shield.
@ -15,8 +14,6 @@
by David A. Mellis
modified 9 Apr 2012
by Tom Igoe
redesigned to make use of operator== 25 Nov 2013
by Norbert Truchsess
*/
@ -28,15 +25,14 @@
// gateway and subnet are optional:
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192,168,0,6);
IPAddress gateway(192,168,0, 1);
IPAddress subnet(255, 255, 255, 0);
IPAddress ip(192,168,1, 177);
IPAddress gateway(192,168,1, 1);
IPAddress subnet(255, 255, 0, 0);
// telnet defaults to port 23
EthernetServer server(23);
EthernetClient clients[4];
boolean alreadyConnected = false; // whether or not the client was connected previously
void setup() {
// initialize the ethernet device
@ -58,54 +54,26 @@ void loop() {
// wait for a new client:
EthernetClient client = server.available();
// when the client sends the first byte, say hello:
if (client) {
boolean newClient = true;
for (byte i=0;i<4;i++) {
//check whether this client refers to the same socket as one of the existing instances:
if (clients[i]==client) {
newClient = false;
break;
}
}
if (newClient) {
//check which of the existing clients can be overridden:
for (byte i=0;i<4;i++) {
if (!clients[i] && clients[i]!=client) {
clients[i] = client;
break;
}
}
if (!alreadyConnected) {
// clead out the input buffer:
client.flush();
Serial.println("We have a new client");
client.println("Hello, client!");
client.print("your IP: ");
client.println(client.remoteIP());
client.print("your port: ");
client.println(client.remotePort());
}
client.println("Hello, client!");
alreadyConnected = true;
}
if (client.available() > 0) {
// read the bytes incoming from the client:
char thisChar = client.read();
// echo the bytes back to all other connected clients:
for (byte i=0;i<4;i++) {
if (!clients[i] || (clients[i]==client)) {
continue;
}
clients[i].write(thisChar);
}
// echo the bytes back to the client:
server.write(thisChar);
// echo the bytes to the server as well:
Serial.write(thisChar);
}
}
for (byte i=0;i<4;i++) {
if (!(clients[i].connected())) {
// client.stop() invalidates the internal socket-descriptor, so next use of == will allways return false;
clients[i].stop();
}
}
}