Javascript websocket.send() 参数
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websocket.send() parameter
提问by Amy
Usually, we only put the data we want to send as websocket.send()method's parameter, but I want to know whether there are other parameters like IP that we can put inside the brackets. Can we use it this way:
通常，我们只将要发送的数据作为websocket.send()方法的参数，但我想知道是否可以将其他参数（如IP）放在括号内。我们可以这样使用它吗：
websocket.send(ip, data); // send data to this ip address
Or I should call other methods?
或者我应该调用其他方法？
回答by pimvdb
As I understand it, you want the server be able to send messages through from client 1 to client 2. You cannot directly connect two clients because one of the two ends of a WebSocket connection needs to be a server.
据我了解，您希望服务器能够将消息从客户端 1 发送到客户端 2。您不能直接连接两个客户端，因为 WebSocket 连接的两端之一需要是服务器。
This is some pseudocodish JavaScript:
这是一些伪代码 JavaScript：
Client:
客户：
var websocket = new WebSocket("server address");
websocket.onmessage = function(str) {
console.log("Someone sent: ", str);
};
// Tell the server this is client 1 (swap for client 2 of course)
websocket.send(JSON.stringify({
id: "client1"
}));
// Tell the server we want to send something to the other client
websocket.send(JSON.stringify({
to: "client2",
data: "foo"
}));
Server:
服务器：
var clients = {};
server.on("data", function(client, str) {
var obj = JSON.parse(str);
if("id" in obj) {
// New client, add it to the id/client object
clients[obj.id] = client;
} else {
// Send data to the client requested
clients[obj.to].send(obj.data);
}
});
