Created
December 2, 2015 21:58
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simple ws echo server
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require 'sinatra' | |
require 'sinatra-websocket' | |
require 'tilt/erubis' | |
set :server, 'thin' | |
set :sockets, [] | |
get '/' do | |
if !request.websocket? | |
erb :index | |
else | |
request.websocket do |ws| | |
ws.onopen do | |
ws.send("Hello World!") | |
settings.sockets << ws | |
end | |
ws.onmessage do |msg| | |
EM.next_tick { settings.sockets.each{ |s| s.send(msg) } } | |
end | |
ws.onclose do | |
warn("websocket closed") | |
settings.sockets.delete(ws) | |
end | |
end | |
end | |
end | |
__END__ | |
@@ index | |
<html> | |
<body> | |
<h1>Simple Echo Server</h1> | |
<form id="form"> | |
<input type="text" id="input" placeholder="say something"></input> | |
</form> | |
<div id="msgs"></div> | |
</body> | |
<script type="text/javascript"> | |
window.onload = function(){ | |
(function(){ | |
var show = function(el){ | |
return function(msg){ el.innerHTML = msg + '<br />' + el.innerHTML; } | |
}(document.getElementById('msgs')); | |
var ws = new WebSocket('ws://' + window.location.host + window.location.pathname); | |
ws.onopen = function() { show('websocket opened'); }; | |
ws.onclose = function() { show('websocket closed'); } | |
ws.onmessage = function(m) { show('websocket message: ' + m.data); }; | |
var sender = function(f){ | |
var input = document.getElementById('input'); | |
input.onclick = function(){ input.value = "" }; | |
f.onsubmit = function(){ | |
ws.send(input.value); | |
input.value = ""; | |
return false; | |
} | |
}(document.getElementById('form')); | |
})(); | |
} | |
</script> | |
</html> |
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