How to change size of readstring() in client.read() on Arduino Ethernet?

Projects Programming
53

This is how. Change testIP to another ip. It will not match.

#include <SPI.h>
#include <Ethernet.h>

IPAddress clientIP(192,168,2,2);
IPAddress testIP(192,168,2,2);

void setup() {
  Serial.begin(9600);

  if(clientIP == testIP) Serial.println("match");
  else Serial.println("no match");

  if(clientIP[0] == testIP[0] && clientIP[1] == testIP[1] && clientIP[2] == testIP[2]) {
    Serial.println("Same subnet");
  }
  else Serial.println("different subnets");
}

void loop() {
}

Here is a firewall-type code using the array of IPAddress types. See reply #1.
http://arduino.cc/forum/index.php/topic,135082.0.html

edit: Here is the way I have this planned. One ip changes, the subnet views, and all others are rejected.

if(clientIP == testIP) {
  Serial.println("match");
  // get input from the GET, process, and send page with form inputs here
}
else if(clientIP[0] == testIP[0] && clientIP[1] == testIP[1] && clientIP[2] == testIP[2]) {
  Serial.println("Same subnet");
  // do not get input. send page with data, but no form
}
else {
  Serial.println("different subnets");
  // send 401 Unauthorized page
}