Hi,
I have a strange behaviour using libevent for long pooling.
I'd like to store a list of all the evhttp_request I receive for a specific
url, without sending an answer to the client (I'ts long pooling, so I keep
the connection open for x seconds).
The problem is that the very first request seems to stuck the others.
Here is a very simple example :
//First we Start the server
int main(int argc, char **argv)
{
short http_port = 8081;
char *http_addr = "192.168.1.56";
struct evhttp *http_server = NULL;
struct event_base *event = event_base_new();
http_server = evhttp_start(http_addr, http_port);
evhttp_set_gencb(http_server, generic_request_handler, NULL);
event_base_dispatch(event);
}
void generic_request_handler (struct evhttp_request *req) {
struct evbuffer *buffer = evbuffer_new();
printf("hello\n");
evhttp_send_reply_start(req, HTTP_OK, "OK");
evbuffer_add_printf(buffer, "Hi %s, this is a comet server based on
libevent.", req->remote_host);
evhttp_send_reply_chunk(req, buffer);
}
First access to the server with firefox print "hello", and send a chunk. OK.
When accessing to the server in another tabs, nothing appen, firefox just
wait. When I close the first tab, then "hello" is printed a second time and
I get the chunk in the second tab !
If I do the same thing but opening the second connection in a chrome tab
(the first one is opened in firefox), I get the second "hello" printed, but
nothing more. Very strange ?!
For me, "hello" should be printed for every request executed, even if the
evhttp_send_reply(...) isn't call yet.
Is it a bug ?? Am I missing something ?
How can we do long-pooling, considering this limitation ?
Thanks for your help,
--
Quentin
