AJAX header with Hebrew letters

Whenever I use AJAX to send a file to a server, the code looks like this:

$.ajax({
            type: 'POST',
            async: true,
            crossDomain: true,
            url: 'http://' + address + '/api/file/upload',
            data: formData,
            processData: false,
            contentType: false, 
            headers: {
                "apiKey": "myKey",
                "FileName": "קובץ.txt"
            },
            success: function (data, textStatus, jqXHR) {}});

while everything works perfectly, if I include a Hebrew file name in the header, it triggers an error:

Error Scan fileTypeError: Failed to execute 'setRequestHeader' on 'XMLHttpRequest': Value is not a valid ByteString

The header with "FileName": "קובץ.txt" fails to work.

javascriptajaxutf-8

Answer №1

One way to convert text to utf8 is by using the following method:

unescape(encodeURIComponent(yourText)) //encode

decodeURIComponent(escape(yourText)) //decode

Answer №2

As stated on this source, it appears that headers in this scenario are limited to ASCII characters. In the event that you need to transmit a UTF-16 value to the endpoint, consider including it within the POST body.

If there is a requirement to include the value as a header, one alternative is to encode the file name in Base 64 and then decode it on the server side. For a demonstration of base-64 encoding בוקר, refer to this example.

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