广播。Emit将MSG发送到所有其他客户端(发送方除外)

socket.on('cursor', function(data) {
socket.broadcast.emit('msg', data);
});

下面是我的列表(1.0版本更新):

// sending to sender-client only
socket.emit('message', "this is a test");


// sending to all clients, include sender
io.emit('message', "this is a test");


// sending to all clients except sender
socket.broadcast.emit('message', "this is a test");


// sending to all clients in 'game' room(channel) except sender
socket.broadcast.to('game').emit('message', 'nice game');


// sending to all clients in 'game' room(channel), include sender
io.in('game').emit('message', 'cool game');


// sending to sender client, only if they are in 'game' room(channel)
socket.to('game').emit('message', 'enjoy the game');


// sending to all clients in namespace 'myNamespace', include sender
io.of('myNamespace').emit('message', 'gg');


// sending to individual socketid
socket.broadcast.to(socketid).emit('message', 'for your eyes only');


// list socketid
for (var socketid in io.sockets.sockets) {}
OR
Object.keys(io.sockets.sockets).forEach((socketid) => {});

使用这个编码

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


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


socket.broadcast.emit('moving', data);
});

这个socket.broadcast.emit()将发送函数中的所有内容，除了发送到发送的服务器

对于房间中的命名空间，循环房间中的客户端列表(类似于Nav的回答)是我发现的两种可行的方法之一。另一种是使用排除。如

socket.on('message',function(data) {
io.of( 'namespace' ).in( data.roomID ).except( socket.id ).emit('message',data);
}

来自@LearnRPG的答案，但带有1.0:

 // send to current request socket client
socket.emit('message', "this is a test");


// sending to all clients, include sender
io.sockets.emit('message', "this is a test"); //still works
//or
io.emit('message', 'this is a test');


// sending to all clients except sender
socket.broadcast.emit('message', "this is a test");


// sending to all clients in 'game' room(channel) except sender
socket.broadcast.to('game').emit('message', 'nice game');


// sending to all clients in 'game' room(channel), include sender
// docs says "simply use to or in when broadcasting or emitting"
io.in('game').emit('message', 'cool game');


// sending to individual socketid, socketid is like a room
socket.broadcast.to(socketid).emit('message', 'for your eyes only');

为了回答@Crashalot的评论，socketid来自:

var io = require('socket.io')(server);
io.on('connection', function(socket) { console.log(socket.id); })

其他情况下

io.of('/chat').on('connection', function (socket) {
//sending to all clients in 'room' and you
io.of('/chat').in('room').emit('message', "data");
};

这里是一个更完整的答案，关于从0.9改变了什么。X到1.x。

 // send to current request socket client
socket.emit('message', "this is a test");// Hasn't changed


// sending to all clients, include sender
io.sockets.emit('message', "this is a test"); // Old way, still compatible
io.emit('message', 'this is a test');// New way, works only in 1.x


// sending to all clients except sender
socket.broadcast.emit('message', "this is a test");// Hasn't changed


// sending to all clients in 'game' room(channel) except sender
socket.broadcast.to('game').emit('message', 'nice game');// Hasn't changed


// sending to all clients in 'game' room(channel), include sender
io.sockets.in('game').emit('message', 'cool game');// Old way, DOES NOT WORK ANYMORE
io.in('game').emit('message', 'cool game');// New way
io.to('game').emit('message', 'cool game');// New way, "in" or "to" are the exact same: "And then simply use to or in (they are the same) when broadcasting or emitting:" from http://socket.io/docs/rooms-and-namespaces/


// sending to individual socketid, socketid is like a room
io.sockets.socket(socketid).emit('message', 'for your eyes only');// Old way, DOES NOT WORK ANYMORE
socket.broadcast.to(socketid).emit('message', 'for your eyes only');// New way

我想编辑@soyuka的帖子，但我的编辑被同行评审拒绝了。

我正在使用名称空间和房间-我发现

socket.broadcast.to('room1').emit('event', 'hi');

在哪里工作

namespace.broadcast.to('room1').emit('event', 'hi');

没有

(如果其他人也面临同样的问题)

更新列表以获取进一步的文档。

socket.emit('message', "this is a test"); //sending to sender-client only
socket.broadcast.emit('message', "this is a test"); //sending to all clients except sender
socket.broadcast.to('game').emit('message', 'nice game'); //sending to all clients in 'game' room(channel) except sender
socket.to('game').emit('message', 'enjoy the game'); //sending to sender client, only if they are in 'game' room(channel)
socket.broadcast.to(socketid).emit('message', 'for your eyes only'); //sending to individual socketid
io.emit('message', "this is a test"); //sending to all clients, include sender
io.in('game').emit('message', 'cool game'); //sending to all clients in 'game' room(channel), include sender
io.of('myNamespace').emit('message', 'gg'); //sending to all clients in namespace 'myNamespace', include sender
socket.emit(); //send to all connected clients
socket.broadcast.emit(); //send to all connected clients except the one that sent the message
socket.on(); //event listener, can be called on client to execute on server
io.sockets.socket(); //for emiting to specific clients
io.sockets.emit(); //send to all connected clients (same as socket.emit)
io.sockets.on() ; //initial connection from a client.

希望这能有所帮助。

发出备忘单

io.on('connect', onConnect);


function onConnect(socket){


// sending to the client
socket.emit('hello', 'can you hear me?', 1, 2, 'abc');


// sending to all clients except sender
socket.broadcast.emit('broadcast', 'hello friends!');


// sending to all clients in 'game' room except sender
socket.to('game').emit('nice game', "let's play a game");


// sending to all clients in 'game1' and/or in 'game2' room, except sender
socket.to('game1').to('game2').emit('nice game', "let's play a game (too)");


// sending to all clients in 'game' room, including sender
io.in('game').emit('big-announcement', 'the game will start soon');


// sending to all clients in namespace 'myNamespace', including sender
io.of('myNamespace').emit('bigger-announcement', 'the tournament will start soon');


// sending to individual socketid (private message)
socket.to(<socketid>).emit('hey', 'I just met you');


// sending with acknowledgement
socket.emit('question', 'do you think so?', function (answer) {});


// sending without compression
socket.compress(false).emit('uncompressed', "that's rough");


// sending a message that might be dropped if the client is not ready to receive messages
socket.volatile.emit('maybe', 'do you really need it?');


// sending to all clients on this node (when using multiple nodes)
io.local.emit('hi', 'my lovely babies');


};

V4.x中的服务器端所有有效发射事件列表

io.on("connection", (socket) => {


// basic emit
socket.emit(/* ... */);


// to all clients in the current namespace except the sender
socket.broadcast.emit(/* ... */);


// to all clients in room1 except the sender
socket.to("room1").emit(/* ... */);


// to all clients in room1 and/or room2 except the sender
socket.to(["room1", "room2"]).emit(/* ... */);


// to all clients in room1
io.in("room1").emit(/* ... */);


// to all clients in room1 and/or room2 except those in room3
io.to(["room1", "room2"]).except("room3").emit(/* ... */);


// to all clients in namespace "myNamespace"
io.of("myNamespace").emit(/* ... */);


// to all clients in room1 in namespace "myNamespace"
io.of("myNamespace").to("room1").emit(/* ... */);


// to individual socketid (private message)
io.to(socketId).emit(/* ... */);


// to all clients on this node (when using multiple nodes)
io.local.emit(/* ... */);


// to all connected clients
io.emit(/* ... */);


// WARNING: `socket.to(socket.id).emit()` will NOT work, as it will send to everyone in the room
// named `socket.id` but the sender. Please use the classic `socket.emit()` instead.


// with acknowledgement
socket.emit("question", (answer) => {
// ...
});


// without compression
socket.compress(false).emit(/* ... */);


// a message that might be dropped if the low-level transport is not writable
socket.volatile.emit(/* ... */);


});

客户端

// basic emit
socket.emit(/* ... */);


// with acknowledgement
socket.emit("question", (answer) => {
// ...
});


// without compression
socket.compress(false).emit(/* ... */);


// a message that might be dropped if the low-level transport is not writable
socket.volatile.emit(/* ... */);

存档链接到source =>http://archive.today/2021.06.22-023900/https://socket.io/docs/v4/emit-cheatsheet/index.html

已为Socket更新。io v4.0.0 +

要发送到除v4中的sender外的所有客户端，您可以使用:

socket.broadcast.emit(/* ... */);

示例使用

io.on("connection", (socket) => {
socket.on("message", (message) => {
//sends "newMessage" to all sockets except sender
socket.broadcast.emit("newMessage", message)
})
})