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認識Pusher,讓訊息來的更即時。
Sam Zhong 2015.12.19
可以透過各項裝置,看到陳偉殷每一局的投球內容。
開著手機App,我可以看到當日NBA比賽的即時的賽
場資訊
1.SignalR
2.Pubnub
3.Pusher
4.Node.Js
Server: .net、java、python、php、ruby
Client:xcode、android、javascript
1. AppID
2. AppKey(token)
3. Secret(token)
1. Pusher Object
2. Channel
3. Event
1.建立 Pusher 物件
2.透過 Pusher 產生 Channel的訂閱
3.經由Channel ,處理訊息接收callback 的event
透過 AppKey ,也就是Client的Token,建立
Pusher Object
ex:
var pusher = new Pusher(‘AppKey', {
encrypted: false
});
由前面所建立的Pusher Object,產生
Listened 的 Channel
ex:
var channel =
pusher.subscribe(‘ChannelName');
接收Channel提供的Message ,建立Event
ex:
channel.bind(‘EventName', function (data) {
SetAdd(data);
});
提供給開發人員,在Pusher Server 測試訊
息傳送與接收,以及觀察各項Log資訊
var presenceChannel =
pusher.subscribe(presenceChannelName);
presenceChannel =
‘presence-’ + Channel_Name
var presenceChannel =
pusher.subscribe(presenceChannelName);
在原本的Channel 名稱前面 加入前置字串:
presenceChannel =
‘presence-’ + ChannelName
channel.bind(‘pusher:subscription_succeeded’,
function(members) {
members.each(function(member) { // for
console.log(member.id);
console.log(member.info);
});
})
Pusher 提供各種語言在平台上進行訊息發送,處理
方式其實是大同小異,主要需要下列變數建立
Server side 的物件:
1. AppID
2. AppKey(token)
3. SecretKey(token)
以 C# 為例,加入PusherServer 的參考後即可建立
Pusher Object:
var pusher = new Pusher(AppID, AppKey, Secret,
new PusherOptions() { Encrypted = true });
public void Publish(
string channel,
string event_name,
string name,
string message_body)
{
this.Trigger(channel, event_name, new{
name = name, message = message_body
});
}
https://pusher.com/docs
https://pusher.com/tutorials
https://pusher.com/docs/libraries

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How to Pusher