// subscribes a client to a channel(s)
public void subscribe_channel(string[] message)
{
// extract subscription(s) requested
subscribe s = new subscribe(message);
// pubsub enabled
if (protocol.pubsub != null)
{
// itterate over the channels requested by the client
for (int i = 0; i < s.channel_name_or_uri.Length; i++)
{
// call the dynamic subscription builder
protocol.Subscribe(s.channel_name_or_uri[i]);
// attempt to pull the channel from pubsub
PubSub_Channel c = protocol.pubsub.GetChannel(s.channel_name_or_uri[i]);
// we need to see if the channel exists
if (c != null)
{
// subscribe the client to this channel
if (subscriptions == null)
subscriptions = new List<PubSub_Channel>();
subscriptions.Add(c);
// subscribe the client and pass true to allow publishing
protocol.SocketSend(new acknowledge(c, true).ToString());
}
else
// channel does not exist, send deny not found
protocol.SocketSend(new deny(s.channel_name_or_uri[i], new PubSub_Exception(404, "Not Found", "http://example.com/api/error#404")).ToString());
}
}
else
{
// pubsub not enabled or not wired up correctly, send deny messages
for (int i = 0; i < s.channel_name_or_uri.Length; i++)
// we need to send a deny down each channel, we gurantee a response
protocol.SocketSend(new deny(s.channel_name_or_uri[i], new PubSub_Exception(403, "Forbidden", "http://example.com/api/error#403")).ToString());
}
}
public void subscribe()
{
// example 1
string input = "[10,[\"\\/rss\\/news\\/latest\"]]";
string[] message = JSONDecoders.DecodeJSONArray(input);
Assert.AreEqual(message[0], "10");
subscribe s = new subscribe(message);
Assert.AreEqual(s.channel_name_or_uri[0], "/rss/news/latest");
// example 2
input = "[10,[\"\\/rss\\/news\\/latest\",\"\\/user\\/28\\/comments\",\"\\/user\\/29\\/comments\"],[{\"category\": \"technology\"},{\"public\": true,\"private\": false},{\"public\": false,\"private\": true}]]";
message = JSONDecoders.DecodeJSONArray(input);
Assert.AreEqual(message[0], "10");
s = new subscribe(message);
Assert.AreEqual(s.channel_name_or_uri[0], "/rss/news/latest");
Assert.AreEqual(s.channel_name_or_uri[1], "/user/28/comments");
Assert.AreEqual(s.channel_name_or_uri[2], "/user/29/comments");
}
