is there a debug mode?

[bluelemonade]

I put an ethernet shield on an arduino uno. also no connection with my node.js socket.io server, I used also your app.js and the older socket implementation.

is there a way to debug the conncetion on the arduino?

I can send udp, read http with the ethernet shield. any ideas? would be realy great to get help.

regards

#define W5100
#include "SocketIOClient.h"
#include "Ethernet.h"
#include "SPI.h"

SocketIOClient client;

byte mac[] = {  0xDE, 0xAA, 0xBB, 0xEF, 0xFE, 0xED };
char hostname[] = "192.168.1.56";
int port = 4444;

extern String RID;
extern String Rname;
extern String Rcontent;

unsigned long previousMillis = 0; 
long interval = 10000; 

void setup() {
    // pinMode(10, OUTPUT);    //for some ethernet shield on the mega : disables the SD and enables the W5100
    // digitalWrite(10, LOW);
    // pinMode(4, OUTPUT);
    // digitalWrite(4, HIGH);
    Serial.begin(9600);
  delay(100);
  Ethernet.init(10); // ???
    Ethernet.begin(mac);

  // Check for Ethernet hardware present
  if (Ethernet.hardwareStatus() == EthernetNoHardware) {
    Serial.println("Ethernet shield was not found.  Sorry, can't run without hardware. :(");
    while (true) {
      Serial.println("Ethernet shield found :(");
      delay(1); // do nothing, no point running without Ethernet hardware
    }
  }
  if (Ethernet.linkStatus() == LinkOFF) {
    Serial.println("Ethernet cable is not connected.");
  } else {
    Serial.println("Ethernet linkStatus ok ");
  }

  delay(1000);
    while (!client.connect(hostname, port)) {
        Serial.println(F("Not connected.") ); 

    if (client.connected()) {
        client.send("connection", "message", "Connected !!!!");
    } else { 
      Serial.println("Connection Error");
        // while(1); 
    }
    delay(1000);
  }
  delay(1000);

  if (client.connect(hostname, port))  
    Serial.println(F("connected."));
}

void loop() {
    unsigned long currentMillis = millis();
    if(currentMillis - previousMillis > interval) {
      previousMillis = currentMillis; 
     Serial.println(F("Interval"));
      //client.heartbeat(0);
      client.send("atime", "message", "Time please?");
    }
    if (client.monitor()) {
        Serial.println(RID);
        if (RID == "atime" && Rname == "time") {
            Serial.print("Time is ");
            Serial.println(Rcontent);
        }
    }
}