Webduino receiving POST params from curl but not from Node

Here's the code running on the Arduino, using the Webduino library:

void handleConfigRequest(WebServer &server, WebServer::ConnectionType type, char *, bool) {

// POST request to receive new config
if (type == WebServer::POST) {

  bool repeat;
  char name[16], value[50];

  do {
      // Returns false when no more params to read from the input
      repeat = server.readPOSTparam(name, 16, value, 50);

      if (strcmp(name, "dName") == 0) {
        strcpy(deviceName, value);
        Serial.println(value);
      }
  } while (repeat);
}

This works as expected (and prints "Test" over serial) when executing the following from curl on the command line:

curl http://10.0.1.141/config -d "dName=Test"

However, the following Node.js using request code doesn't work:

var options = {
    url: "http://10.0.1.141/config",
    headers: {
      "Content-Type": "application/x-www-form-urlencoded",
      "Accept": "*/*",
      "User-Agent": "TestingScript"
    },
    form: {dName: "Test"}
  }

  request.post(options, function(error, response, body) {
    console.log(error, response, body)
  })

Using the Node code, the Arduino acknowledges the HTTP POST request (in this case, by blinking an LED), but does not print "Test" to serial.

I have pointed both curl and my Node code at a requestb.in page, and you can see that the requests themselves appear to be identical (the bottom one is curl, the top is mine):

Any suggestions?

via Alfo