Re: PIC12F629 simulation with MPLAB 5.2

On Sun, 29 Mar 2009 12:20:49 -0700, JosephKK wrote:

There's no reason why HTTP should be any more flaky than FTP. Both handle
resuming a download in exactly the same way, i.e. the client tells the
server to skip the first N bytes of the file.

No. They don't. Do go read up on the protocols.

I don't need to read up on them, I'm already familiar with both protocols.

Http is more like udp.

HTTP uses TCP. If you want to claim that it's "more like" UDP, you'll need
to elaborate.

Ftp is a multifile wrapper around tcp. Big differences.

No idea what you mean by "multifile".

The biggest difference between the two is that FTP uses separate control
and data connections. The control connection persists so long as you are
logged in, and is used to initiate transfers. A separate data connection
is established for each transfer. To resume a download, the client sends a
REST command whose argument is the length of the partial file, causing the
subsequent RETR command to start transferring data from the specified
offset.

http://www.w3.org/Protocols/rfc959/4_FileTransfer.html

HTTP is stateless; there is no persistent connection. The client
opens a connection, and sends a request, and the server returns the data
on the same connection. The request may include a Range: header to
indicate that only a portion of the data should be returned. To resume a
download, the client specifies a range whose starting position is the
length of the partial file.

http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35


.

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