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<H1>[99s-extend] How to send multiple messages in response to one message from Cowboy</H1>
<B>John Kemp</B>
<A HREF="mailto:extend%40lists.ninenines.eu?Subject=Re%3A%20%5B99s-extend%5D%20How%20to%20send%20multiple%20messages%20in%20response%20to%20one%0A%20message%20from%20Cowboy&In-Reply-To=%3C5115453C.1040808%40jkemp.net%3E"
TITLE="[99s-extend] How to send multiple messages in response to one message from Cowboy">john at jkemp.net
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<I>Fri Feb 8 19:34:36 CET 2013</I>
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<PRE>Answering my own question - multiple messages can be sent in reply by
including a list of 'reply' tuples in the websocket_handle response. I
found this by looking at cowboy_websocket_handler.erl in the source tree.
-callback websocket_handle({text | binary | ping | pong, binary()}, Req,
State)
-> {ok, Req, State}
| {ok, Req, State, hibernate}
| {reply, cowboy_websocket:frame() | [cowboy_websocket:frame()], Req,
State}
| {reply, cowboy_websocket:frame() | [cowboy_websocket:frame()], Req,
State, hibernate}
| {shutdown, Req, State}
when Req::cowboy_req:req(), State::state().
JohnK
On 02/08/2013 08:08 AM, John Kemp wrote:
><i> Hi,
</I>><i>
</I>><i> I see that with websocket_info/3 I can prompt Cowboy to send a message
</I>><i> to a connected client by sending a "system message".
</I>><i>
</I>><i> How can I send multiple reply messages to a client which has sent a
</I>><i> request?
</I>><i>
</I>><i> Is the way to do that by calling websocket_info/3 directly (multiple
</I>><i> times) from within my websocket_handle call?
</I>><i>
</I>><i> Cheers,
</I>><i>
</I>><i> JohnK
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