XHR/POST form-data: lower-case Content-Type

Hello,

Thank you for providing this information about the issue. Unfortunately, we are unable to reproduce this problem in Edge with the information at hand. Please update this case when you can provide more details, such as a sample website and repro steps.

Best Wishes,
The MS Edge Team

Dear James,

Since the Creators update which took Edge on my to version 15063, I am having the same problem now also on the PC.

The interesting thing is that it does not happen if using the browser directly. I have created the following html test page:

OK

The request will be sent correctly with CAPTIAL Content-Type:
POST /cgi-bin/hi3510/upgrade.cgi HTTP/1.1
Accept: text/html, application/xhtml+xml, image/jxr, /
Accept-Language: de-DE,de;q=0.8,it-IT;q=0.7,it;q=0.5,en-US;q=0.3,en;q=0.2
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36 Edge/15.15063
Content-Type: multipart/form-data; boundary=---------------------------7e13c1fa0eb6
Accept-Encoding: gzip, deflate
Host: 192.168.25.170
Content-Length: 6382331
Connection: Keep-Alive
Cache-Control: no-cache
Authorization: Basic YWRtaW46YWRtaW4=
Content-Disposition: form-data; name="setting_file"; filename="B18WL_V7.1.9.1.1-20170308 BV-A 1.8.pkg"
Content-Type: application/x-zip-compressed

If I use the following code in JS:
function send_fw(blob)
{
var header, url;
var xmlHttp = new XMLHttpRequest();
var fd = new FormData();

fd.append("setting_file", blob, ufile);

xmlHttp.onreadystatechange = function ()
{
    if (xmlHttp.readyState === 4)
    {
        if (xmlHttp.status === 200)
        {
            update_result(xmlHttp.responseText);
        }
        else
        {
            update_result(xmlHttp.status + " " + xmlHttp.responseText);
        }
    }
};

url = "http://" + mycam_ip + "/cgi-bin/hi3510/upgrade.cgi";
xmlHttp.open("POST", url, true);
header = "Basic " + b64enc("admin:" + mycam_pw);
xmlHttp.setRequestHeader("Authorization", header);
xmlHttp.timeout = 25000;
xmlHttp.ontimeout = function ()
xmlHttp.send(fd);

}

The request will be sent with small Content-Type and it fails with BAD REQUEST:
POST /cgi-bin/hi3510/upgrade.cgi HTTP/1.1
Accept: /
Accept-Language: de-DE,de;q=0.8,it-IT;q=0.7,it;q=0.5,en-US;q=0.3,en;q=0.2
Authorization: Basic YWRtaW46YWRtaW4=
content-type: multipart/form-data; boundary=---------------------------7e1fb2ea0f0e
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; MSAppHost/3.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36 Edge/15.15063
Host: 192.168.25.170
Content-Length: 6366442
Connection: Keep-Alive
Cache-Control: no-cache
Content-Disposition: form-data; name="setting_file"; filename="B18WL_V7.1.9.1.1-20170628.pkg"
Content-Type: application/octet-stream

What has happened in that update? If this is not a bug, what can I do to get a compliant behaviro for the XHR as well?

Regards
Peter

For some reason there is “OK” where I put the HTML sample code. I try again:

OK

//
//
//
//

//

//
//
//
//OK

//

//

//

No way to get the HTML shown here, I uploaded the HTML sample as attachment test.htm. :-)

Hello,

Thank you for the additional information about the issue. Unfortunately, your demo contains a form action which is not resolving. Can you describe the repro steps to be sure we are using the attachment correctly?

Best Wishes,
The MS Edge Team