https + large-file sending, sometimes fails

[Igor Sysoev]

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.
> 
> if the downloader supports resuming, then the file-download can be resumed.
> 
> the file is served using the "X-Accel-Redirect" technique (it's 
> authenticated on a proxied apache server, and then the file is served 
> directly by nginx)
> 
> 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)
> 
> any ideas why is this happening?
> 
> also, i checked the release-notes for 0.5.34, and it says:
> 
> "
> Bugfix: the big responses may be transferred truncated if SSL and
>        gzip were used.
> "
> 
> can this be somehow related to it?
> 
> is there a bug-database for nginx? so is there a way to check what this 
> bug was?

No, this is not this bug.
Could you create debug log of this request (you may not use
X-Accel-Redirect for this) ?


-- 
Igor Sysoev
http://sysoev.ru/en/