将自定义名称空间与中间件一起使用时,服务器会收到“连接”事件,但客户端不会收到“连接”事件。
这有效:
io.use((socket, next) => {
console.log('middleware running...');
next();
}).on('connection', socket => {
console.log('client connected');
});
这不起作用:
// Following works, but client does not receive 'connect' or 'connection':
io.of('/admin').use((socket, next) => {
console.log('middleware running...');
next();
}).on('connection', socket => {
console.log('client connected');
});
也很奇怪:如果我执行以下代码,那么即使/ admin的中间件未运行,默认名称空间也不会发出任何“ connect”事件。
io.on('connection', socket => {
console.log('client connected');
});
io.of('/admin').use((socket, next) => {
console.log('middleware running...');
next();
}).on('connection', socket => {
console.log('client connected');
});
要解决此问题,我必须将.use((socket, next) => { next(); })
到默认名称空间。 但是/ admin仍然不会发出“连接”。
请看上面
连接后,客户端应收到“连接”
嗨! 您如何初始化客户端? 以下内容似乎对我有用:
io.use((socket, next) => {
console.log('(default) middleware running...');
next();
}).on('connection', socket => {
console.log('(default) client connected');
});
// Following works, but client does not receive 'connect' or 'connection':
io.of('/admin').use((socket, next) => {
console.log('(admin) middleware running...');
next();
}).on('connection', socket => {
console.log('(admin) client connected');
});
// client
const socket = require('socket.io-client')('http://localhost:3000/admin');
socket.on('connect', onConnect);
function onConnect(){
console.log('connect ' + socket.id);
}
输出(小提琴):
server listening on port 3000
(default) middleware running...
(default) client connected
(admin) middleware running...
(admin) client connected
不,它对我不起作用。 完整代码,工作示例:
服务器:
let express = require('express'),
app = new express(),
server = app.listen(3005, 'localhost'),
io = require('socket.io')(server)
;
io.on('connection', socket => {
console.log('client connected');
});
io.of('/admin')
.use((socket, next) => {
console.log('middleware running...');
next();
})
.on('connection', socket => {
console.log('admin connected');
})
;
客户:
$(function () {
let socket;
$('#btn-connect').click(() => {
console.log('Connecting ...');
socket = io('http://localhost:3005');
socket.on('connect', () => {
console.log(`Connected to ${url} with id: ${socket.id}`);
});
socket.on('disconnect', reason => {
console.log(`Disconnected. Reason: ${reason}`);
});
});
$('#btn-connect-admin').click(() => {
console.log('Connecting to admin ...');
socket = io('http://localhost:3005/admin');
socket.on('connect', () => {
console.log(`Connected to ${url} with id: ${socket.id}`);
});
socket.on('disconnect', reason => {
console.log(`Disconnected. Reason: ${reason}`);
});
});
});
如果我删除了中间件,我可以同时连接两者。 如果仅将中间件添加到admin,则默认名称空间或/ admin都不会发生连接事件。
服务器正确显示所有内容:
没有? :(
@MickL对此有任何更新吗?
也遇到了同样的问题。
不知道您是否发现了这一点。 唯一的连接问题是与根名称空间有关,如果您还为根路径添加了中间件,则该中间件也将能够与其连接。 (这可以是一个快速解决方法,待定)
可以归结为以下几种情况:
If namespace A('/)' and B('/otherPath') has no middleware it connects to both fine;
If namespace A has no middleware and B has. It connects to A on server side, but client sides 'connect' event listener never gets called, B namespace connects fine;
If namespace A and B both has middleware it can connect to both;
不,我使用了一种解决方法。 代替:
io.of('/admin')
.use((socket, next) => {
if(tokenValid()) {
next();
} else {
next(new Error('Authentication error'));
}
})
.on('connection', socket => {
console.log('admin connected');
})
;
我写:
io.of('/admin')
.on('connection', socket => {
if(!tokenValid()) {
socket.disconnect();
}
console.log('admin connected');
})
;
我花了很多钱,似乎客户端确实连接到服务器,但是客户端没有获得连接事件。
我想这可以工作。 遗憾的是,我们无法正确地将中间件用于其预期用途。
@darrachequesne您提供和测试的示例与报告的问题不同。
您需要从默认名称空间中删除中间件,然后尝试连接。
像这样:
io.on('connection', socket => {
console.log('(default) client connected');
});
io.of('/admin').use((socket, next) => {
console.log('(admin) middleware running...');
next();
}).on('connection', socket => {
console.log('(admin) client connected');
});
// client
const socket = require('socket.io-client')('http://localhost:3000/');
const socket_two = require('socket.io-client')('http://localhost:3000/admin');
//wont trigger
socket.on('connect', onConnect);
//will trigger
socket_two.on('connect', onConnect);
function onConnect(){
console.log('connect ' + socket.id);
}
现在应该失败了。
请参阅上面的说明,了解其有效/无效的情况。
干杯。
@JanisRubens感谢您提供详尽的报告:+1 https://github.com/socketio/socket.io/pull/3197修复
我仍然面对这个!
在创建名称空间之前,客户端会接收事件,但在添加名称空间并使用中间件之后,客户端不会接收任何事件,但是框架会显示在chrome上。
+1
@adeelhussain @ElioTohm您使用的是哪个版本? 您能用小提琴来重现案件吗?
使用socketio v2.1.1和socket.io-redis v5.2.0
我会尝试用小提琴尽快复制它
最有用的评论
@JanisRubens感谢您提供详尽的报告:+1 https://github.com/socketio/socket.io/pull/3197修复