Re: [lwip-users] AW: SOLVED - Failed to send large files ( > 64 kb ) over TCP

[Simon Goldschmidt]

Richner Simon wrote:
> I'm not too familiar with the HTTP-specifications, but the problem seems
> to be, that if a message is larger than the MSS, specified by the client,
> the server is expected to set the Content-Length Option.

Exerpt from RFC 1945 (HTTP 1.0 specification), chapter 10.4 "Content-Length":

   "Applications should use this field to indicate the size of the
   Entity-Body to be transferred, regardless of the media type of the
   entity. A valid Content-Length field value is required on all
   HTTP/1.0 request messages containing an entity body."

So for requests (POST), Content-Length is needed, while for responses (GET 
response, in your case), it is not required (note the word "should"). The 
browser should receive all data up to the FIN - the server sends all data and 
closes the connection at the end of the file.

Content-Length can help, but I wouldn't expect an HTTP/1.0-compliant browser to 
fail like you observed...

Simon
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