i send the following http header:
POST / HTTP/1.1\r\nx-nokia-mmsc-message-id:000000000000000000000000000003\r\nx-nokia-mmsc-version:1.1\r\nx-nokia-mmsc-message-type: MultimediaMessage\r\nContent-Type: application/vnd.wap.mms-message\r\nHost: localhost:8000\r\nContent-Length: 50

and the result in the mmsc is the following:

<I> Mon Jan 13 10:19:10 CET 2003
<I> Message received:
<I> POST / HTTP/1.1
<I> x-nokia-mmsc-message-id: 00000000000000000000000000003
<I> content-type: application/vnd.wap.mms-message
<I> host: localhost:8000
<I> x-nokia-mmsc-version: .1
<I> x-nokia-mmsc-message-type: MultimediaMessage
<I> content-length: 50
<E> Invalid PDU message type: -104
<W> Unexpected PDU content type:
<E> Invalid PDU sender:
<E> Invalid PDU transaction id:
<E> No recipient (To:, Cc: or Bcc

<I> Mon Jan 13 10:19:10 CET 2003
<I> Sending response:
<I> HTTP/1.1 400 Message Validation Failed
<I> X-NOKIA-MMSC-Version: 1