新答案
绝对是 io-client 中的错误。:(
我可以通过修改 socket.io-client/libs/socket.js 来解决这个问题。在第 433 行附近,我只是移动了this.publish('disconnect', reason);
上面的if (wasConnected) {
.
Socket.prototype.onDisconnect = function (reason) {
var wasConnected = this.connected;
this.publish('disconnect', reason);
this.connected = false;
this.connecting = false;
this.open = false;
if (wasConnected) {
this.transport.close();
this.transport.clearTimeouts();
按 ctrl+c 后,断开连接消息会在大约十秒内触发。
旧讨论
要通知客户端关闭事件,您可以在 demo_server.js 中添加如下内容:
var logger = io.log;
process.on('uncaughtException', function (err) {
if( io && io.socket ) {
io.socket.broadcast.send({type: 'error', msg: err.toString(), stack: err.stack});
}
logger.error(err);
logger.error(err.stack);
//todo should we have some default resetting (restart server?)
app.close();
process.exit(-1);
});
process.on('SIGHUP', function () {
logger.error('Got SIGHUP signal.');
if( io && io.socket ) {
io.socket.broadcast.send({type: 'error', msg: 'server disconnected with SIGHUP'});
}
//todo what happens on a sighup??
//todo if you're using upstart, just call restart node demo_server.js
});
process.on('SIGTERM', function() {
logger.error('Shutting down.');
if( io && io.socket ) {
io.socket.broadcast.send({type: 'error', msg: 'server disconnected with SIGTERM'});
}
app.close();
process.exit(-1);
});
当然,您在 broadcast.send(...) 中发送的内容(甚至您在其中使用的命令)取决于您的偏好和客户端结构。
对于客户端,您可以使用示例中的 on('disconnect', ...) 判断服务器连接是否丢失:
client.on('disconnect', function(data) {
alert('disconnected from server; reconnecting...');
// and so on...
});