But the partial data is been continuously sending back to client. Squid didn't wait for the complete file to download
On Sat, 8 Sep 2018, 20:08 Amos Jeffries, <squid3@xxxxxxxxxxxxx> wrote:
On 8/09/18 7:44 PM, Hariharan Sethuraman wrote:
> And here is my HTTP request and reply:
> 1. HEAD request to read image information
> 2. GET request to download the image
>
Not quite. GET partial / Range request to fetch the content.
Squid converted it into a full request for the backend server due to
range_offset_limit -1. But that does mean Squid had to download ~240MB
of data before anything starts being sent to the client.
> (2)
> 2018/09/08 07:28:39.155| 11,2| client_side.cc(1278) parseHttpRequest:
> HTTP Client REQUEST:
> ---------
> GET /DcKbz9kqMQXK-zp95pv9LH11kjhTpxOJsJ-1FYEL4
> Host: example.com:3129 <http://example.com:3129>^M
> Range: bytes=242819145-^M
> User-Agent: curl/7.56.1^M
> Accept: */*^M
>
> 2018/09/08 07:28:39.938| 11,2| http.cc(2261) sendRequest: HTTP Server
> REQUEST:
> ---------
> GET /DcKbz9kqMQXK-zp95pv9LH11kjhTpxOJsJ-1FYEL4
> User-Agent: curl/7.56.1^M
> Accept: */*^M
> Host: exampletarget.com <http://exampletarget.com>^M
> Via: 1.1 jb7mgd (squid/4.2)^M
> Surrogate-Capability: jb7mgd="Surrogate/1.0"^M
> X-Forwarded-For: **.**.**.**^M
> Cache-Control: max-age=0^M
> Connection: keep-alive^M
>
> 2018/09/08 07:28:44.359| 11,2| http.cc(723) processReplyHeader: HTTP
> Server RESPONSE:
> ---------
> HTTP/1.1 200 OK
> Date: Sat, 08 Sep 2018 07:28:40 GMT^M
> Server: Apache/2.2^M
> Content-Disposition: attachment; filename=somefile.iso;^M
> Last-Modified: Fri, 20 Jul 2018 18:23:10 GMT^M
> ETag: "4a54c59-11653800-571726350bf80"^M
> Accept-Ranges: bytes^M
> Content-Length: 291846144^M
> Keep-Alive: timeout=5, max=100^M
> Connection: Keep-Alive^M
> Content-Type: application/unknown^M
>
> 2018/09/08 07:28:44.361| 11,2| Stream.cc(267) sendStartOfMessage: HTTP
> Client REPLY:
> ---------
> HTTP/1.1 206 Partial Content^M
> Date: Sat, 08 Sep 2018 07:28:40 GMT^M
> Server: Apache/2.2^M
> Content-Disposition: attachment; filename=somefile.iso;^M
> Last-Modified: Fri, 20 Jul 2018 18:23:10 GMT^M
> ETag: "4a54c59-11653800-571726350bf80"^M
> Accept-Ranges: bytes^M
> Content-Type: application/unknown^M
> X-Cache: MISS from jb7mgd^M
> X-Cache-Lookup: MISS from jb7mgd:3128^M
> Via: 1.1 jb7mgd (squid/4.2)^M
> Connection: keep-alive^M
> Content-Range: bytes 242819145-291846143/291846144^M
> Content-Length: 49026999^M
>
> Thanks,
> Hari
>
> On Sat, Sep 8, 2018 at 9:48 AM Hariharan Sethuraman wrote:
>
> Hi Amos,
>
> This is what I see when the download is in progress:
>
> KEY 44000000000000000902000000000000
> STORE_PENDING NOT_IN_MEMORY SWAPOUT_NONE PING_DONE
> RELEASE_REQUEST,DISPATCHED,PRIVATE,VALIDATED
So file stored in memory and scheduled for removal.
> LV:1536379799 LU:1536379801 LM:1532110990 EX:-1
> 4 locks, 1 clients, 1 refs
> Swap Dir -1, File 0XFFFFFFFF
> GET
> https://example.com/DhAskLOUpvRG2oeR_f_FxYTyLVHIN5esRF-LXOUKwkwyT0TOf6xO-AUm3KaM
> inmem_lo: 99225582
> inmem_hi: 99324372
> swapout: 0 bytes queued
>
Amos
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