Failure when posting an XML file to a rails metal app

I'm trying to write some rails metal code to handle a large XML file
post, but I'm receiving a 500 from my server. If I use a POST but
don't provide a file to upload, everything works and I receive a 200
response, but if I provide a file (the -d flag with curl), I receive a
500. Here's the curl command I'm using:

curl -siX POST http://large_file_tester/uploader -d
@/home/mike/tmp/Product\ Upload\ Example\ XMLs/products.1000.xml
--header "Content-Type: application/xml"

and the response:

HTTP/1.1 100 Continue

HTTP/1.1 500 Internal Server Error
Server: Apache/2.2.11 (Ubuntu) Phusion_Passenger/3.0.7
Vary: Accept-Encoding
Content-Length: 646
Connection: close
Content-Type: text/html; charset=iso-8859-1

<title>500 Internal Server Error</title>
<h1>Internal Server Error</h1>
<p>The server encountered an internal error or
misconfiguration and was unable to complete
your request.</p>
<p>Please contact the server administrator,
webmaster@localhost and inform them of the time the error occurred,
and anything you might have done that may have
caused the error.</p>
<p>More information about this error may be available
in the server error log.</p>
<address>Apache/2.2.11 (Ubuntu) Phusion_Passenger/3.0.7 Server at
large_file_tester Port 80</address>

here's my apache error log:

[ pid=31236 thr=140090706884944 file=ext/apache2/Hooks.cpp:865
time=2011-05-09 17:08:44.35 ]: Unexpected error in mod_passenger: An
error occured while sending the request body to the request handler:
Broken pipe (32)

and here's the rails metal code:

# Allow the metal piece to run in isolation
require(File.dirname(__FILE__) + "/../../config/environment") unless

class Uploader
    if env["PATH_INFO"] =~ /^\/uploader/
      request =
        return [200,{"Content-Type" => "text/html"},["Upload success"]]
      return [200, {"Content-Type" => "text/html"}, ["Hello, World!"]]
      return[404, {"Content-Type" => "text/html"}, ["Not Found"]]

Anyone have any suggestions? Thanks,


To really get to the bottom of it we’ll need to see your rails error logs, but one thing you can try is using --data-binary instead of -d in your curl command line. That’s tripped me up on many occasions working with XML.