[rabbitmq-discuss] Stomp, subscriptions, and forward slashes

Mon Nov 4 22:35:48 GMT 2013

On 11/04/2013 05:21 AM, Emile Joubert wrote:
>
> On 02/11/13 22:04, Brennan Sellner wrote:
>
>> Is there any way to escape the slash in the exchange name when
>> subscribing via web-stomp?  I've blindly tried a few options (i.e. '\\/'
>> or '%47'),
>
>
> You can use %2F as an escaped forward-slash character in STOMP.
>

<facepalm> My bad: URL encoding, not HTML encoding.  Thanks!

One more STOMP / WebSockets-related question: The STOMP 1.1 spec states
that it's possible to transmit binary messages
(http://stomp.github.io/stomp-specification-1.1.html, 'Protocol Overview').

However, when I try to consume a binary protobuf from Javascript,
RabbitMQ drops my connection with the bad_utf8_character_code error
report quoted below.  Browser-side, I'm using SockJS and stomp.js
(http://www.jmesnil.net/stomp-websocket/doc/).

https://github.com/sockjs/sockjs-protocol/issues/74 makes it clear that
SockJS (at least) doesn't yet support binary payloads.  What's not clear
to me is whether rabbitmq_web_stomp does: is it worth fiddling around
with SockJS replacements, or should I just bite the bullet and add a
relay to re-encode everything going to and from the browser as base64?

Thanks,

-Brennan

=ERROR REPORT==== 4-Nov-2013::17:15:03 ===
** Handler sockjs_cowboy_handler terminating in websocket_info/3
    for the reason exit:{ucs,{bad_utf8_character_code}}
** Message was go
** Options were {service,"/stomp",#Fun<rabbit_ws_sockjs.1.120271989>,{},
                          "http://cdn.sockjs.org/sockjs-0.2.js",false,true,

5000,25000,131072,#Fun<rabbit_ws_sockjs.0.116551930>}
** Handler state was {websocket,<0.4058.0>}
** Request was {http_req,#Port<0.20033>,cowboy_tcp_transport,keepalive,
                    <0.4057.0>,'GET',
                    {1,1},
                    {{127,0,0,1},33666},
                    [<<"localhost">>],
                    undefined,<<"localhost">>,15674,
                    [<<"stomp">>,<<"615">>,<<"38_dv47k">>,<<"websocket">>],
                    [<<"615">>,<<"38_dv47k">>,<<"websocket">>],
                    <<"/stomp/615/38_dv47k/websocket">>,undefined,<<>>,[],
                    [{'Cookie',
                         <<"sessionid=600fbdc35df07db74bf4067b38702643;
csrftoken=ae2bc9d9535ef8f220a0eb467883ea4e">>},
                     {'User-Agent',
                         <<"Mozilla/5.0 (X11; Linux x86_64)
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.110
Safari/537.36">>},
                     {<<"Sec-Websocket-Extensions">>,
                      <<"x-webkit-deflate-frame">>},
                     {<<"Sec-Websocket-Version">>,<<"13">>},

{<<"Sec-Websocket-Key">>,<<"dJr61dUXL0ilQiqpgALD3w==">>},
                     {'Cache-Control',<<"no-cache">>},
                     {'Pragma',<<"no-cache">>},
                     {<<"Origin">>,<<"http://localhost:8000">>},
                     {'Host',<<"localhost">>},
                     {'Connection',<<"Upgrade">>},
                     {'Upgrade',<<"websocket">>}],
                    [{'Upgrade',[<<"websocket">>]},
                     {'Connection',[<<"upgrade">>]}],
                    undefined,
                    [{websocket_version,13}],
                    waiting,<<>>,done,[],<<>>,
                    {#Fun<cowboy_http.urldecode.2>,crash}}
** Stacktrace: [{xmerl_ucs,from_utf8,1},
                 {mochijson2_fork,json_encode_string,2},
                 {mochijson2_fork,'-json_encode_array/2-fun-0-',3},
                 {lists,foldl,3},
                 {mochijson2_fork,json_encode_array,2},
                 {sockjs_util,encode_frame,1},
                 {sockjs_ws_handler,reply,2},
                 {sockjs_cowboy_handler,websocket_info,3}]

My apologies for the below:

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