MmsFileService: Don't use file size on read #526
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The size value shall be interpreted as an estimated file size and shall not be used to determine absolute size.
When creating raw sockets the protocol must be set to 0. In case for receive sockets this means we will receive no packets until we "bind" the socket with a non-zero protocol. In case for only transmit sockets this avoids an expensive call packet receiving function in kernel thats overflow internal receive socket buffer.
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The size value shall be interpreted as an estimated file size and shall not be used to determine absolute size.