>Please consider not top-posting to make it easier to read this mail thread!

*static* *void* *fifo_cb*(*int* fd, *short* event, *void* *arg)
> {
>
> ...
> *...*
> new_conn(s, arg); */* if we read a URL, go get it! */ *
> }
> *else*
> *break*;
> } *while*(rv != EOF);
>
> *while(1); *// I add this line to block the function but I already
> add easy handle to multi handle
> }
>

>Didn't we already discuss that hyperfifo runs single-threaded and if you
loop unconditionally there then no transfer will occur?

sorry I still don't know why it has relation with single-threaded?

I feel stuck there.

2017-05-02 21:57 GMT+08:00 Daniel Stenberg <daniel_at_haxx.se>:

> On Tue, 2 May 2017, Pahome Chen wrote:
>
> Please consider not top-posting to make it easier to read this mail thread!
>
> *static* *void* *fifo_cb*(*int* fd, *short* event, *void* *arg)
>> {
>>
>> ...
>> *...*
>> new_conn(s, arg); */* if we read a URL, go get it! */ *
>> }
>> *else*
>> *break*;
>> } *while*(rv != EOF);
>>
>> *while(1); *// I add this line to block the function but I already
>> add easy handle to multi handle
>> }
>>
>
> Didn't we already discuss that hyperfifo runs single-threaded and if you
> loop unconditionally there then no transfer will occur?
>
> then *sock_cb* will never executed, the application will only execute
>> *multi_timer_cb*
>>
>
> Rigth, since you will only add new handles to the multi handle and never
> actually make them progress anywhere. That's what the fifo_cb callback does
> in that example.
>
> But why on earth do you do that while(1) loop there? The code is already
> written to call that callback when there's activity on the fifo.
>
> I'm sure I already add easy handle and finish executing *new_conn* but
>> *sock_cb* doesn't activate
>>
>
> Once you've added a curl handle to the multi handle, you need to call
> curl_multi_socket_action() to get the transfer going. Call it indicating a
> time-out. It is described in "Everything curl" here:
>
> https://ec.haxx.se/libcurl-drive-multi-socket.html#how-to-
> start-everything
>
> --
>
> / daniel.haxx.se
>

-- 
Best Regards,
pahome

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Received on 2017-05-02