将Html5 SSE发送给特定客户端 [英] Sending Html5 SSE to specific clients

问题描述

我想将服务器事件（推送通知）发送给特定用户（基于他们的用户名）任何想法怎么做？

i want to send the server event(push notificaton) to specific users(based on their usernames) any idea how to do it?

推荐答案

HTTP工作在断开模式。服务器不记得它的客户端。



你应该从客户端编写脚本来实现服务器轮询



http://api.jquery.com/category/ajax/ [ ^ ]



http://stackoverflow.com/questions/3583203/server-polling-with-javascript [ ^ ]



http://stackoverflow.com/questions/1155245/javascript-poll-server-will-这导致堆栈溢出 [ ^ ]

HTTP works in disconnected mode. The server does not remember its clients.

You should implement server polling from client side scripting

http://api.jquery.com/category/ajax/[^]

http://stackoverflow.com/questions/3583203/server-polling-with-javascript[^]

http://stackoverflow.com/questions/1155245/javascript-poll-server-will-this-cause-a-stack-overflow[^]

SSE广播到所有打开的连接。在JSON流中包含您的组，并在javascript中进行组检查。



注意：这不是一种安全的方法，不要以这种方式使用敏感数据，因为每个人都收到每条消息，它只会被你的javascript以不同的方式处理。



例如：



服务器端C＃

SSE broadcasts to all open connections. Include your group in your JSON stream and do the group check in the javascript.

Note : This is not a secure method, do not use sensitive data this way, since everyone gets every single message, it''ll only be handled by your javascript differently.

Example :

Server-Side C#

string JSON = "data: {'IntendedFor' = 'AdminClerks', 'Message' = 'You\'ve got a server event'}";
Response.Write(JSON+'\n\n');
Response.Flush();

客户端HTML

Client HTML

<input id='myGroup' type='hidden' value='AdminClerk' />

客户端Javascript

Client Javascript

var myGroup = document.GetElementById('myGroup').value;
var source = new EventSource('<insert url="" here="">');
source.onmessage = function (e) {
  var myJSONResponse = JSON.parse(e.data);
  if (myJSONResponse.IntendedFor == myGroup)
    alert("You've got a server event");
}

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