Question

当我尝试使用＆＃34; emit＆＃34;从客户端emisor发送消息时，我遇到了问题。我尝试用＆＃34; on＆＃34;来捕捉消息。在客户受体中。

我不知道问题是什么，我的代码就是这样：

Emisor客户：

socket.emit("callDriver", data);

Receptor Client：

socket.on("sendToDriver", function(data){

    console.log(data);

})

服务器：

var io = require('socket.io')(server);

io.on('connection', function(socket){

    socket.on('callDriver', function(data){

        console.log(data);

        socket.emit('sendToDriver', data);

    })

})

感谢社区

Answer 1

伙计们我解决了这个问题，在Socket.io的官方文档中很奇怪他们说当你在.emit中发送数据时你应该用＆＃34; socket.emit（）＆＃发送它34; （服务器端）但我尝试更换套接字io并使用此模式工作。

总结：

＆＃13;

// I changed this:
io.on('connection', function(socket){

    socket.on('callDriver', function(data){

        console.log(data);

        socket.emit('sendToDriver', data);

    })

})

// for this:
io.on('connection', function(socket){

    socket.on('callDriver', function(data){

        console.log(data);

        io.emit('sendToDriver', data);

    })

})

＆＃13;

谢谢你们！

Answer 2

这是一个简单的房间解决方案。 init（）部分非常低技术/简单，但是当你第一次连接到服务器时，你没有说明你打算如何使用客户端userId / session-data填充套接字服务器。

//Client
socket.on('connect',()=>{
 socket.on('init',()=>{
  socket.emit('init', 'userid')
 })
})
socket.on("sendToDriver", function(message){
  console.log(message);
})

sendMessage(message){
let data = {userId: "userId", message: message}
socket.emit("callDriver", data);
}

//Server
var io = require('socket.io')(server);
//Triggered by each client separately.
io.on('connection', function(socket){
    socket.on('init', (driverId)=>{
        //When your web socket starts for the first time, each user creates their own room with their main userId that is used in your mobile app.
        //Your setup is so basic, that the server('connection') -> server.emit('init') -> client.on('init') -> client.emit('init') flow is the most sane example for now.
        //However this init() setup is primitive -- you need an authentication flow and to pass up the userId/session data with a socket.io 'middleware' function or the 'socket.io-auth' library (recommended)
        socket.join(driverId)
    })
    socket.emit('init')
    //Data sent to callDriver will contain the userId of the desired receipient. Since this user is already waiting in that room for us, we join it, 
    //send the message, and then leave immediately. 
    socket.on('callDriver', function(data){
        socket.join(data.driverIdToCall)
        socket.to(data.driverIdToCall).emit('sendToDriver', data.message);
        socket.leave(data.driverIdToCall)
    })
})

Socket.io，Node，Corodva，我没有在客户端接收中回复消息

2 个答案: