400 Bad request

Submitted by Guest on Sat, 12/04/2014 - 13:42

Hi!

I have started my energy monitor proj. Using http://emoncms.org/ website to upload energy meter data but arduino won´t do it.

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

// assign a MAC address for the ethernet controller.
// fill in your address here:
byte mac[] = {
  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
// fill in an available IP address on your network here,
// for manual configuration:
IPAddress ip(192, 168, 0, 27);


// initialize the library instance:
EthernetClient client;
//IPAddress server(176,227,193,50);
char server[] = "emoncms.org";

unsigned long lastConnectionTime = 0;          // last time you connected to the server, in milliseconds
boolean lastConnected = false;                 // state of the connection last time through the main loop
const unsigned long postingInterval = 15*1000;  // delay between updates, in milliseconds

void setup() {
  // start serial port:
  Serial.begin(115200);
  // give the ethernet module time to boot up:
  delay(1000);
  // start the Ethernet connection using a fixed IP address and DNS server:
  Ethernet.begin(mac, ip);
  // print the Ethernet board/shield's IP address:
  Serial.print("My IP address: ");
  Serial.println(Ethernet.localIP());
}

void loop() {
  // if there's incoming data from the net connection.
  // send it out the serial port.  This is for debugging
  // purposes only:
  if (client.available()) {
    char c = client.read();
    Serial.print(c);
  }

  // if there's no net connection, but there was one last time
  // through the loop, then stop the client:
  if (!client.connected() && lastConnected) {
    Serial.println();
    Serial.println("disconnecting.");
    client.stop();
  }

  // if you're not connected, and ten seconds have passed since
  // your last connection, then connect again and send data:
  if(!client.connected() && (millis() - lastConnectionTime > postingInterval)) {
    httpRequest();
  }
  // store the state of the connection for next time through
  // the loop:
  lastConnected = client.connected();
}

// this method makes a HTTP connection to the server:
void httpRequest() {
  // if there's a successful connection:
  if (client.connect(server, 80)) {
    Serial.println("connecting...");
    // send the HTTP GET request:
    client.print("GET /node/set.json?nodeid=10&data=20,20,20,20&apikey=xxxxxxxxxxxx HTTP/1.1");
    client.print("Host:emoncms.org");
    client.print("User-Agent: Arduino");
    client.print("Connection: close");
    client.println();
   

    // note the time that the connection was made:
    lastConnectionTime = millis();
    }
  else {
    // if you couldn't make a connection:
    Serial.println("connection failed");
    Serial.println("disconnecting.");
    client.stop();
  }
}

It just simple code to get arduino sending data to emoncms.

Server response:

GET /node/set.json?nodeid=10&data=20,20,20,20&apikey=xxxxxxxxxxxxx HTTP/1.1

Host:emoncms.org

User-Agent: Arduino

Connection: close

HTTP/1.1 400 Bad Request
Date: Sat, 12 Apr 2014 12:44:48 GMT
Server: Apache/2.2.22 (Ubuntu)
Vary: Accept-Encoding
Content-Length: 329
Connection: close
Content-Type: text/html; charset=iso-8859-1

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>400 Bad Request</title>
</head><body>
<h1>Bad Request</h1>
<p>Your browser sent a request that this server could not understand.<br />
</p>
<hr>
<address>Apache/2.2.22 (Ubuntu) Server at h176-227-193-50.host.redstation.co.uk Port 80</address>
</body></html>