https + large-file sending, sometimes fails

[Gábor Farkas]

Igor Sysoev wrote:
> On Mon, Dec 17, 2007 at 03:56:39PM +0100, G??bor Farkas wrote:
> 
>> Igor Sysoev wrote:
>>> On Mon, Dec 17, 2007 at 03:12:33PM +0100, G?bor Farkas wrote:
>>>
>>>> i am sending large (400mb) csv files using nginx, using https.
>>>>
>>>> sometimes not the whole file is served by nginx.
>>>> it simply closes the connection before the whole file is sent.
>>>>
>>>>
>>>> when such problems happen, the error-log contains this:
>>>>
>>>> 2007/12/17 01:02:03 [crit] 21821#0: *864836 SSL_write() failed (SSL: 
>>>> error:1409F07F:SSL routines:SSL3_WRITE_PENDING:bad write retry) while 
>>>> sending response to client, client: 1.2.3.4, server: www.example.com, 
>>>> URL: "/some/url/to/a.csv", upstream: 
>>>> "http://internal-ip/some/auth/url/a.csv", host: "www.example.com"
>>>>
>>>> debian lenny (it has nginx 0.5.30-1)


hi,

maybe i am completely wrong here, but:

(on ubuntu gutsy and hardy):

simply create a minimal https-serving nginx-config, serve a 200mb file,
and try to fetch it from a different computer, using a lot of
concurrent-requests (something like "ab -n 1000 -c 100"),
and you will get the mentioned error.

so, basically, any https-serving is broken.

i find this very hard to believe, but i do not know what should i change
in the test.

(the packages:nginx-0.5.33, openssl-0.9.8g)

any ideas why this happens?

i attached the nginx.conf, and the site-config i used
(the nginx.conf is the default config from ubuntu)

thanks,
gabor

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