HTTP Data chunks over multiple packets?

http packet chunked-encoding
myforwik picture myforwik · May 7, 2010 · Viewed 11.4k times · Source

What is the correct way for a HTTP server to send data over multiple packets?

For example I want to transfer a file, the first packet I send is:

HTTP/1.1 200 OK
Content-type: application/force-download
Content-Type: application/download
Content-Type: application/octet-stream
Content-Description: File Transfer
Content-disposition: attachment; filename=test.dat
Content-Transfer-Encoding: chunked

400
<first 1024 bytes here>

400
<next 1024 bytes here>

400
<next 1024 bytes here>

Now I need to make a new packet, if I just send:

400
<next 1024 bytes here>

All the clients close there connections on me and the files are cut short.

What headers do I put in a second packet to continue on with the data stream?

Answer

Yann Ramin picture Yann Ramin · May 7, 2010

HTTP has no notion of packets. Your HTTP stream could even be broken up into 1 byte packets.

For chunked encoding, your must specify the needed headers for each chunk (which has no bearing on packets) as given in the RFC.

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