[Nice] When can we send()?

[Youness Alaoui]

That's an excellent question..
returning -1 means that an error happened, in the case of non-reliable, it might
mean that something went really wrong, and it shouldn't happen... (although I
think it might, but I'm not sure in which use case a socket_send on a UDP socket
would return -1)
However, in reliable mode, although -1 means an error occured, it just means
either one of these two errors : NOT_CONNECTED or WOULD_BLOCK.. the
NOT_CONNECTED errors just means that you're not connected, so you should wait
for the writable signal, and the WOULD_BLOCK also means that it couldn't send
anything, in which case, you also need to wait the writable signal...
In other words, yes, if it returns -1, you should just wait for the signal and
continue, as if nothing happened...

I hope this makes it clearer.. and yes, I should document that properly.

Thanks,
Youness.

On 09/27/2010 03:02 PM, Tony Di Croce wrote:
> Ok, I know what to do when nice_agent_send() return less than the number
> of bytes I've requested... But I'd like clarification on 1 thing.... If
> it returns -1, should I keep trying, or does that indicate something
> unrecoverable has occurred?
> 
>      td
> 
> 
> On Wed, Sep 1, 2010 at 12:19 PM, Youness Alaoui
> <youness.alaoui at collabora.co.uk <mailto:youness.alaoui at collabora.co.uk>>
> wrote:
> 
>     Yeah, it's like any normal reliable socket, you only write stuff to
>     do when it
>     becomes 'writable'. Read the docs correctly, it will initially send
>     you the
>     writable signal when it's ready.. and after that, whenever you call
>     send (), if
>     it doesn't return '-1' OR a value less than what you asked it to
>     write, then it
>     will NOT send a new signal.. so you have to keep track of that.. as
>     soon as you
>     receive a reponse of -1 (or < len) then you must wait for the new
>     writable signal.
> 
>     Youness.
> 
>     On 09/01/2010 12:04 PM, Tony Di Croce wrote:
>     > Ah... I'm guessing I should be looking for
>     > "reliable-transport-writable"... I'll try that...
>     >
>     >     td
>     >
>     > On Wed, Sep 1, 2010 at 9:01 AM, Tony Di Croce <dicroce at gmail.com
>     <mailto:dicroce at gmail.com>
>     > <mailto:dicroce at gmail.com <mailto:dicroce at gmail.com>>> wrote:
>     >
>     >     I have found that unless I sleep for 3 seconds after whichever
>     agent
>     >     is that last to reach NICE_COMPONENT_STATE_READY, my calls to
>     >     nice_agent_send() will fail (return -1, btw, this is with a
>     reliable
>     >     agent, haven't tried it with unreliable)...
>     >
>     >     Is there some other event I should listening for or is this normal
>     >     behaviour?
>     >
>     >         td
>     >
>     >
>     >
>     >
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> 
> 
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