我有一个打开 8000 端口的 node.js 服务器。它是一个聊天服务器。我有另一个 PHP 服务器,我使用代理 + 虚拟主机,所以当我去 www.phpserver.com/chat 它代理到 node.js 服务器。我这样做是为了可以使用 ajax 来调用 node.js 服务器。
现在,当我运行 node.js 服务器时一切正常,但是,过了一段时间(随机时间框架,不一定长或短),PHP 服务器会崩溃,因为它从 node.js 服务器获取 EOF 并且它一直卡在那里,直到我停止/重新启动 node.js 服务器。
我得到的错误是(来自 php 错误日志):
(70014) 找到文件结尾:代理:从远程服务器 nodeserver.com:8000 读取状态行时出错,引用者:https ://www.phpserver.com
我问了一些专业人士,他们说这是因为 PHP 服务器成功将请求发送到 node.js 服务器并收到 EOF 或未收到任何响应。我不明白如何解决它。即使node.js服务器崩溃了,我该怎么办,它不会崩溃PHP服务器?我应该摆脱代理+ajax并开始使用socket.io吗?
请指教。
谢谢!
下面是一些节点代码。
从中间件:
this.events.addListener('update', o_.bind(function(package) {
if(this.clear != 0){
delete this.sessions[this.clear];
}
var _package = package.toJSON();
if(package.type == 'status' && package.status == 'offline') {
var sids = Object.keys(this.sessions), sid, sess;
for(sid in this.sessions) {
sess = this.sessions[sid];
if(sess.data('username') == package.username) {
if(sess.listeners.length)
sess.send(200, {type: 'goodbye'});
delete this.sessions[sid];
break;
}
}
}
}, this));
};
Hub.prototype.destroy = function(sid, fn) {
this.set(sid, null, fn);
};
Hub.prototype.reap = function(ms) {
var threshold = +new Date - ms,
sids = Object.keys(this.sessions);
for(var i = 0, len = sids.length; i < len; ++i) {
var sid = sids[i], sess = this.sessions[sid];
if(sess.lastAccess < threshold) {
this.events.emit('update', new packages.Offline(sess.data('username')));
}
}
};
Hub.prototype.get = function(req, fn) {
if(this.sessions[req.sessionID]) {
fn(null, this.sessions[req.sessionID]);
} else {
this.auth.authenticate(req, o_.bind(function(data) {
if(data) {
var session = new User(req.sessionID, data);
this.set(req.sessionID, session);
this.auth.friends(req, data, o_.bind(function(friends) {
var friends_copy = friends.slice();
o_.values(this.sessions).filter(function(friend) {
return ~friends.indexOf(friend.data('username'));
}).forEach(function(friend) {
var username = friend.data('username');
friends_copy[friends_copy.indexOf(username)] =
[username, friend.status()];
}, this);
session._friends(friends_copy);
console.log("refreshed");
session.events.addListener('status',
o_.bind(function(value, message) {
this.events.emit(
'update',
new packages.Status(session.data('username'),
value,
message)
);
}, this));
this.events.addListener('update',
o_.bind(session.receivedUpdate, session));
this.set(req.sessionID, session);
fn(null, session);
}, this));
} else {
fn();
}
}, this));
}
};
来自 app.js
#!/usr/bin/env node
var sys = require('sys'),
express = require('express'),
packages = require('./libs/packages'),
fs = require('fs'),
o_ = require('./libs/utils'),
https = require('https');
o_.merge(global, require('./settings'));
try { o_.merge(global, require('./settings.local')); } catch(e) {}
try {
var daemon = require('./libs/daemon/daemon'),
start = function() {
daemon.init({
lock: PID_FILE,
stdin: '/dev/null',
stdout: LOG_FILE,
stderr: LOG_FILE,
umask: 0,
chroot: null,
chdir: '.'
});
},
stop = function() {
process.kill(parseInt(require('fs').readFileSync(PID_FILE)));
};
switch(process.argv[2]) {
case 'stop':
stop();
process.exit(0);
break;
case 'start':
if(process.argv[3])
process.env.EXPRESS_ENV = process.argv[3];
start();
break;
case 'restart':
stop();
start();
process.exit(0);
break;
case 'help':
sys.puts('Usage: node app.js [start|stop|restart]');
process.exit(0);
break;
}
} catch(e) {
sys.puts('Daemon library not found! Please compile ' +
'./libs/daemon/daemon.node if you would like to use it.');
}
var options = {
key: fs.readFileSync('/home/ec2-user/key.pem'),
cert: fs.readFileSync('/home/ec2-user/cert.pem'),
ca: fs.readFileSync('/home/ec2-user/ca.pem'),
};
var app = express();
//app.set('env', 'development');
app.use(express.methodOverride());
app.use(express.cookieParser());
app.use(express.bodyParser());
app.use(require('./middleware/im')({
maxAge: 30 * 1000,
reapInterval: 20 * 1000,
authentication: require('./libs/authentication/' + AUTH_LIBRARY)
}));
app.set('root', __dirname);
if ('development' == app.get('env')) {
app.set('view engine', 'jade');
app.set('views', __dirname + '/dev/views');
app.stack.unshift({
route: '/dev',
handle: function(req, res, next) {
req.dev = true;
next();
}
});
app.use(express.logger());
require('./dev/app')('/dev', app);
app.use(express.static(
require('path').join(__dirname, '../client')));
app.use(express.errorHandler({dumpExceptions: true, showStack: true}));
}
//app.listen(APP_PORT, APP_HOST);
// Listener endpoint; handled in middleware
app.get('/listen', function(){});
app.post('/message', function(req, res) {
res.find(req.body['to'], function(user) {
if(!user)
return res.send(new packages.Error('not online'));
res.message(user, new packages.Message(
req.session.data('username'),
req.body.body
));
});
});
app.post('/message/typing', function(req, res) {
if(~packages.TYPING_STATES.indexOf('typing' + req.body['state'])) {
res.find(req.body['to'], function(user) {
if(user) {
res.message(user, new packages.Status(
req.session.data('username'),
'typing' + req.body.state
));
}
// Typing updates do not receive confirmations,
// as they are not important enough.
res.send('');
});
} else {
res.send(new packages.Error('invalid state'));
}
});
app.post('/status', function(req, res) {
if(~packages.STATUSES.indexOf(req.body['status'])) {
res.status(req.body.status, req.body.message);
res.send(new packages.Success('status updated'));
} else {
res.send(new packages.Error('invalid status'));
}
});
app.post('/online', function(req, res) {
var d = new Date();
var n = d.getTime() + 30;
req.sessionID.expires = n;
res.status(req.body.status, 'available');
});
app.post('/signoff', function(req, res) {
res.signOff();
res.send(new packages.Success('goodbye'));
});
app.use(function(err, req, res, next){
console.error(err.stack);
res.send(500, 'Error on the node/express server.');
});
https.createServer(options, app).listen(8000);