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 The MIME stream separates headers and a datastream. It also allows
 automatic creation of the content-length header.
[scriptable, uuid(dcbce63c-1dd1-11b2-b94d-91f6d49a3161)]
interface nsIMIMEInputStream : nsIInputStream

Attributes

 When true a "Content-Length" header is automatically added to the
 stream. The value of the content-length is automatically calculated
 using the available() method on the data stream. The value is
 recalculated every time the stream is rewinded to the start.
 Not allowed to be changed once the stream has been started to be read.
attribute boolean addContentLength

Methods

 Adds an additional header to the stream on the form "name: value". May
 not be called once the stream has been started to be read.
 @param name   name of the header
 @param value  value of the header
void addHeader(in string name, in string value)
 Sets data-stream. May not be called once the stream has been started
 to be read.
 The cursor of the new stream should be located at the beginning of the
 stream if the implementation of the nsIMIMEInputStream also is used as
 an nsISeekableStream.
 @param stream  stream containing the data for the stream
void setData(in nsIInputStream stream)