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From Paul Querna <>
Subject Re: Immediate output in process_connection
Date Mon, 04 Jul 2005 00:32:07 GMT
Jem Berkes wrote:
> I've been playing with basic modules that implement their own protocol 
> (process_connection hooked) along the lines of the mod_echo example. But 
> one thing I can't seem to do is send output immediately back to the client, 
> even though I am flushing the output filters.
> With the following code, if I telnet localhost I don't see the "hello" 
> until I first send some line, or close the connection. Contrast to say a 
> POP3 server where you see the +greeting as soon as you connect. I did look 
> at the mod_pop3 code but can't understand what it does differently than 
> this. Do I have to explicitly do something with the input_filters here? 
> Currently I don't touch the input side, but something is introducing a 
> delay.

What is your Listen line for this protocol's port?

Try something like:

Listen myproto
AcceptFilter myproto none


> static int rdate_process_connection(conn_rec *c)
> {
> 	apr_bucket_brigade *bb;
> 	rdate_cfg* cfg = ap_get_module_config(c->base_server->module_config,
> 		&rdate_module);
> 	if (!cfg->rdate_enabled)
> 		return DECLINED;
> 	bb = apr_brigade_create(c->pool, c->bucket_alloc);
> 	ap_fprintf(c->output_filters, bb, "hello\n");
> 	ap_fflush(c->output_filters, bb);
> 	return OK;
> }

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