Make a WS class to eliminate globals

proxy/websocket.coffee

@@ -2,58 +2,59 @@
 Only websocket-specific stuff.
 ###
 
-WSS_ENABLED = true
-DEFAULT_PORTS =
-  http:  80
-  https: 443
+class WS
+  @WSS_ENABLED: true
+  @DEFAULT_PORTS:
+    http:  80
+    https: 443
 
-# Build an escaped URL string from unescaped components. Only scheme and host
-# are required. See RFC 3986, section 3.
-buildUrl = (scheme, host, port, path, params) ->
-  parts = []
-  parts.push(encodeURIComponent scheme)
-  parts.push '://'
+  # Build an escaped URL string from unescaped components. Only scheme and host
+  # are required. See RFC 3986, section 3.
+  @buildUrl: (scheme, host, port, path, params) ->
+    parts = []
+    parts.push(encodeURIComponent scheme)
+    parts.push '://'
 
-  # If it contains a colon but no square brackets, treat it as IPv6.
-  if host.match(/:/) && !host.match(/[[\]]/)
-    parts.push '['
-    parts.push host
-    parts.push ']'
-  else
-    parts.push(encodeURIComponent host)
+    # If it contains a colon but no square brackets, treat it as IPv6.
+    if host.match(/:/) && !host.match(/[[\]]/)
+      parts.push '['
+      parts.push host
+      parts.push ']'
+    else
+      parts.push(encodeURIComponent host)
 
-  if undefined != port && DEFAULT_PORTS[scheme] != port
-    parts.push ':'
-    parts.push(encodeURIComponent port.toString())
+    if undefined != port && @DEFAULT_PORTS[scheme] != port
+      parts.push ':'
+      parts.push(encodeURIComponent port.toString())
 
-  if undefined != path && '' != path
-    if !path.match(/^\//)
-      path = '/' + path
+    if undefined != path && '' != path
+      if !path.match(/^\//)
+        path = '/' + path
+      ###
+      Slash is significant so we must protect it from encodeURIComponent, while
+      still encoding question mark and number sign. RFC 3986, section 3.3: 'The
+      path is terminated by the first question mark ('?') or number sign ('#')
+      character, or by the end of the URI. ... A path consists of a sequence of
+      path segments separated by a slash ('/') character.'
+      ###
+      path = path.replace /[^\/]+/, (m) ->
+        encodeURIComponent m
+      parts.push path
+
+    if undefined != params
+      parts.push '?'
+      parts.push Query.buildString params
+
+    parts.join ''
+
+  @makeWebsocket: (addr, params) ->
+    wsProtocol = if @WSS_ENABLED then 'wss' else 'ws'
+    url = @buildUrl wsProtocol, addr.host, addr.port, '/', params
+    ws = new WebSocket url
     ###
-    Slash is significant so we must protect it from encodeURIComponent, while
-    still encoding question mark and number sign. RFC 3986, section 3.3: 'The
-    path is terminated by the first question mark ('?') or number sign ('#')
-    character, or by the end of the URI. ... A path consists of a sequence of
-    path segments separated by a slash ('/') character.'
+    'User agents can use this as a hint for how to handle incoming binary data: if
+    the attribute is set to 'blob', it is safe to spool it to disk, and if it is
+    set to 'arraybuffer', it is likely more efficient to keep the data in memory.'
     ###
-    path = path.replace /[^\/]+/, (m) ->
-      encodeURIComponent m
-    parts.push path
-
-  if undefined != params
-    parts.push '?'
-    parts.push Query.buildString params
-
-  parts.join ''
-
-makeWebsocket = (addr, params) ->
-  wsProtocol = if WSS_ENABLED then 'wss' else 'ws'
-  url = buildUrl wsProtocol, addr.host, addr.port, '/', params
-  ws = new WebSocket url
-  ###
-  'User agents can use this as a hint for how to handle incoming binary data: if
-  the attribute is set to 'blob', it is safe to spool it to disk, and if it is
-  set to 'arraybuffer', it is likely more efficient to keep the data in memory.'
-  ###
-  ws.binaryType = 'arraybuffer'
-  ws
+    ws.binaryType = 'arraybuffer'
+    ws