我有一對server.js和client.js腳本文件。Node.js跨端口發送數據包
這裏是server.js文件...
var express = require('express');
var appMain = express(); var appReset = express();
var serverMain = require('http').Server(appMain);
var serverReset = require('http').Server(appReset);
var fs = require('fs');
appMain.get('/', function(req, res) {
res.sendFile(__dirname + '/client/index.html');
});
appMain.use('/client', express.static(__dirname + '/client'));
appReset.get('/', function(req, res) {
res.sendFile(__dirname + '/client/reset.html');
});
appReset.use('/client', express.static(__dirname + '/client'));
serverMain.listen(3000); console.log('Start mainServer');
serverReset.listen(2000); console.log('Start resetServer');
var gameScores;
fs.readFile('client/data/scores.txt', 'utf8', function(error, data) {
if (error) {
console.log('Read Error!');
gameScores = null;
}
else {
console.log('Read Success!');
gameScores = data;
}
});
var ioMain = require('socket.io') (serverMain,{});
ioMain.sockets.on('connection', function(socket) {
console.log('mainSocket Connected');
socket.emit('gameScores', gameScores);
socket.on('gameScores', function(data) {
gameScores = data;
fs.writeFile('client/data/scores.txt', JSON.stringify(data), function(error) {
if (error)
console.log('Write Error!');
else
console.log('Write Success!');
});
socket.emit('gameScores', gameScores);
});
});
var ioReset = require('socket.io') (serverReset,{});
ioReset.sockets.on('connection', function(socket) {
console.log('resetSocket Connected');
socket.on('resetScores', function(data) {
fs.unlink('client/data/scores.txt', function(error) {
if (error) {
console.log('Delete Error!');
socket.emit('clearScores', false);
}
else {
console.log('Delete Success!');
gameScores = null;
socket.emit('defaultScores', gameScores);
socket.emit('clearScores', true);
}
});
});
});
這裏是client.js文件...
socket.on('gameScores', function(data) {
if (data !== null) {
if (JSON.parse(localStorage.reload))
localStorage.reload = false;
else
localStorage.gameScores = JSON.stringify(data);
localStorage.emptyScores = false;
}
else {
localStorage.emptyScores = true;
localStorage.reload = false;
}
});
socket.on('defaultScores', function(data) {
if (data == null) {
console.log('Received Default from Server');
localStorage.emptyScores = true;
Game.main.gameScores('load');
}
});
所有這兩個文件的代碼工作正常,除了在server.js文件中您可以看到註釋「Delete Success!」隨後是三行代碼。這三條線,這是不工作的特定線如下:
socket.emit('defaultScores', gameScores);
上面的代碼行應該發送的數據包,以在標籤的「defaultScores」的client.js文件中的對應的插座接收器,但客戶永遠不會收到它。我知道客戶端沒有收到它,因爲評論「從服務器收到默認值」不會打印到客戶端控制檯。一旦問題的套接字接收器能夠成功地工作,從而打印有問題的評論,其餘的應該可以正常工作。
因此,我特別要求幫助獲得評論「從服務器收到默認值」以成功打印到客戶端控制檯。
你有沒有試過在'defaultScore'客戶端函數中的null檢查之前記錄'data'? – Joe
@Joe謝謝你,但你必須澄清你的意思。我不明白你的建議。 – jmine83
對不起,我的意思是嘗試在這個函數中記錄'data'參數:'socket.on('defaultScores',function(data){...});' – Joe