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我会先说我发现了这个网站上发布的几个类似问题。尽管如此，它们都不适用于我的情况。socket.io发射三次发射
我有一个服务器和客户端（与node.js/socket.io规范一样），并且在按下按钮时调用会发出套接字事件。这工作正常...除了似乎排放三次（至少服务器运行三次函数）。在这一点上，我一直盯着代码太长，需要另一套眼睛。
希望有人有一个想法。
客户端代码：
importJS('/js/pages/admin_base.js',function(){
var restartLMC = function(io){
toggleLoad();
var user = localStorage.getItem('User');
io.emit('restart_request',{session: user});
};
AdminIO = new io('http://localhost:26266');
AdminIO.on('restart_success',function(dat){
toggleLoad();
dropInfo(dat);
});
AdminIO.on('sendError',function(dat){
dropInfo(dat,{level: 'error'});
});
AdminIO.on('restart_fail',function(dat){
toggleLoad();
dropInfo(dat,{level: 'error'});
});
$('#restart').on('click',function(){
restartLMC(AdminIO);
});
});
管理员代码：
process.stdout.write('\033c');
console.log('\x1b[36m', "Admin server starting...", '\x1b[0m');
var
ini = require('node-ini')
, conf = ini.parseSync('../config.ini')
, CS = require('../lm_modules/CoreSync.js')
, CoreSync = new CS()
, checkSession = function (session, callback) {
var res;
if (!CoreSync) { throw "Fatal error, there is no connection to the Core service!"; }
if (CoreSync.sessions) {
if (CoreSync.sessions[session]) {
res = CoreSync.sessions[session];
callback(res);
}
else {
CoreSync.sync('session', function (err, dat) {
if (CoreSync.sessions[session]) {
res = CoreSync.sessions[session];
callback(res);
} else { res = false; callback(res); }
});
}
} else {
res = false; callback(res);
}
if (res === "undefined") { callback(false); }
}
, runCMD = function(cmd,errCB,callback){
var
command
, args;
if(cmd.cmd){ command = cmd.cmd; } else { command = cmd; }
if(cmd.args){ args = cmd.args; }
const spawn = require('child_process').spawn;
const ex = spawn(command, args);
ex.stdout.on('data', (data) => {
callback(data);
});
ex.stderr.on('data', (data) => {
errCB(data);
});
ex.on('close', (code) => {
});
}
, executeCMD = function(cmd,callback){
const exec = require('child_process').exec
, cdw = (__dirname + '/../');
exec(cmd, {cwd: cdw}, (err, stdout, stderr) => {
if (err) {
callback(err,null);
return;
}
callback(stderr,stdout);
});
}
, io = require('socket.io').listen(26266) // can use up to 26485
console.log('\x1b[32m', "Admin server started.", '\x1b[0m');
console.log("Admin server listening at " + "http://" + conf["Server"]["binding"] + ":26266");
io.on('connection', function (socket) {
socket.on('restart_request', function(req){
console.log('Recieved restart request');
var success = false
, session = JSON.parse(req.session)
, sessionID = session.sessionID;
checkSession(sessionID, function (ses) {
if (ses === false) { console.error('CheckSession failed: No session exists'); return; }
if (ses.user.uuid !== session.uuid) { console.error('CheckSession failed: UUID mismatched'); return; }
if (ses.user.role < conf['Permissions']['lm_restart']){ socket.emit('restart_fail','Insufficient permissions.'); return; }
if(process.platform === 'win32'){
executeCMD('cd',function(err,res){
var errSent = false;
if(err){
console.error(err);
if(!errSent){ socket.emit('sendError','Restart failed'); }
errSent = true;
if(res === null){return;}
}
console.log(res);
socket.emit('restart_success','LM successfully restarted.');
});
}
else if(process.platform === 'linux'){
}
});
});
});