Question

These are the steps:

• POST Form (file/image input) from the browser goes to a PHP server.
• The PHP server then use fsockopen to a Java (GlassFish/Jersey) REST service, sending the image as content for more advanced imaging work to be done there, and returning the resulting image back to the PHP server (or returning only a URI to the image).
• The PHP server then echos the result (img src= ..) back to the user in the HTML document.

Getting the image and all its attributes in the first step works great, but I need help setting up the headers correctly in the POST request from PHP to the web service.

Current code:

$fp = fsockopen("domain..", 80, $errno, $errstr, 30);
$contentlength = $_FILES["photo_file"]["size"];
$imageref = $_FILES["photo_file"]["tmp_name"];

$out = "POST /Uri to resource .. HTTP/1.1\r\n";
$out .= "Host: http://... \r\n";
$out .= "Connection: Keep-Alive\r\n";
$out .= "Content-type: multipart/mixed\r\n";
$out .= "Content-length: $contentlength\r\n\r\n";
$out .= "$imageref";

fwrite($fp, $out);
$theOutput;
while (!feof($fp))
{
  $theOutput .= fgets($fp, 128);
}
echo $theOutput;
fclose($fp);

Which echoes to the browser: “HTTP/1.1 400 Bad Request Content-Type: text/html Content-Length: 717”.

So I need better formed headers to get through to the REST web-method. And if I should achieve that does anyone know what paramaters to use in the jersey web-method to access the image?
For standard HTML forms its this:

@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response getFullImage(@FormDataParam("photo_file") InputStream imageIS {..ImageIO.read(imageIS)..}

Would love suggestions to better architecture also for achieving this in HTML.

Cheers

Answer 1

You probably have problem with badly written request and should use cURL at first place (in php), basic example usage (with writing to the file) from manual page:

$ch = curl_init("http://www.example.com/");
$fp = fopen("example_homepage.txt", "w");

curl_setopt($ch, CURLOPT_FILE, $fp);
curl_setopt($ch, CURLOPT_HEADER, 0);

curl_exec($ch);
curl_close($ch);
fclose($fp);

Another example for setting post data from curl_setopt() page:

$data = array('name' => 'Foo', 'file' => '@/home/user/test.png');

curl_setopt($ch, CURLOPT_URL, 'http://localhost/upload.php');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

And handling HTTP status codes via curl_getinfo():

if(curl_getinfo($c, CURLINFO_HTTP_CODE) === 200){
    ...
}

You also may set http headers manually:

curl_setopt($cURL,CURLOPT_HTTPHEADER,array (
        "Content-Type: text/xml; charset=utf-8",
        "Expect: 100-continue"
    ));