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Problem with setRequestHeader (X-FILE-NAME) - Cannot convert string to ByteString because the character at index 0 has value 1044 which is greater than 255.

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In version 23 Firefox correctly send non-utf-8 filename via JavaScript if this construction used: xhr.setRequestHeader('X-FILE-NAME', event.dataTransfer.files[0].name);

But in version 24.0 this construction doesn't work and throw exception "Cannot convert string to ByteString because the character at index 0 has value 1044 which is greater than 255.".

How can I fix this error?

In version 23 Firefox correctly send non-utf-8 filename via JavaScript if this construction used: xhr.setRequestHeader('X-FILE-NAME', event.dataTransfer.files[0].name); But in version 24.0 this construction doesn't work and throw exception "Cannot convert string to ByteString because the character at index 0 has value 1044 which is greater than 255.". How can I fix this error?

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A good place to ask advice about web development is at the mozillaZine "Web Development/Standards Evangelism" forum.

The helpers at that forum are more knowledgeable about web development issues.
You need to register at the mozillaZine forum site in order to post at that forum.