Ethernet Shield + PHP problem...

Forum 2005-2010 (read only) Software Syntax & Programs
1

Hi,

I hope someone can help me. I have an arduino Ethernet shield, which connects ok with an HTML page in my domain, but cannot connect to a php page. (I have created a php page to gather Weather data in my location, and was hoping to feed back to Arduino).

I get the following error:

connecting...
connected
<!DOCTYPE html PUBLIC "-//W3C//DTD Xconnecting...
connected
      <title>Error 500 - Internal server error</title>

disconnecting.

disconnecting.

and on my arduino:

    client.println("GET /mypage.php");
    client.println(" HTTP/1.1");
    client.println();

Its driving me nuts....

Any tips?

2

Does the php page work when you go it with your browser? The error 500 is a serverside one, and has nothing to do with the arduino

3

Yes it does. I'm basically getting all the information I need into 1 line of text.....

Do I need to convert my php page into HTML?

4

I can also connect with the Arduino to other PHP pages OK. So annoying....

5

Not exactly sure what the problem is, but one thing I see that may cause a problem is that you should either:

  • use HTTP/1.0 as protocol
  • or send a HOST: xxx header

HTTP/1.1 protocol requires that you send a HOST: header.

Also, it looks like you broke up the request line:

GET /mypage.php
 HTTP/1.1

and it should be all on one line.

Just try this instead:

    client.print[glow][s]ln[/s][/glow]("GET /mypage.php");
    client.println(" HTTP/1.[glow]0[/glow]");
    client.println();

Some web servers may be more forgiving about the HTTP protocol, and that's why they may be responding.

b

6

For the record (in case anyone else comes across the same problem), this was solved using the following lines:

if (client.connect()) {
Serial.println("connected");
client.print("GET http://www...../myfile.php?fname=19 HTTP/1.1\n");
client.print("Host: www.arkadian.eu\n\n");
client.println();
}

Basically, 1and1 (like other hosts) require HTTP1.1 and a host before processing a php file.

The host can be any valid url.