Re: [lwip-users] http keep-alive

[Kieran Mansley]

On Thu, 2009-02-19 at 09:49 +0100, Bernhard 'Gustl' Bauer wrote:
> Hi,
> 
> I try to speed up my lwip implementation by using keep-alive http 
> connections. I have enabled LWIP_TCP_KEEPALIVE but I don't really think 
> I need it, because I never reach the timeout.

TCP keepalives, and persistent HTTP connections are different things.
You're right that you don't need LWIP_TCP_KEEPALIVE, as it should have
no effect on HTTP traffic, and won't speed anything up.  Persistent HTTP
connections will, but they are different.

> If I read httpd.c correct every time a file is sent out the http 
> connection is closed by close_conn(). I want to replace close_conn() 
> with a function that does all the necessary things to receive another 
> paket without closing the connection and call http_recv() again. Maybe I 
> need some timeout and close the connection if the browser has shut down.
> 
> Any ideas how to do this would be appreciated.

I think the example httpd only support HTTP 1.0.  For persistent
connections it would have to be upgraded to use HTTP 1.1.

Kieran