我做的这台代理服务器作为网关，把来自公网客户端的请求通过http转发到内部的连天服务器，但在开发阶段由于客户端发送带未转义的双引号，换行符等字符，导致聊天服务器解析json数据包出错，从而未响应我的网关服务器。

我于是设置了请求超时，和错误事件处理，以结束客户端的请求。但即使这样，node写的网关服务器还是经常被挂起，即进程和端口一直在，但就是不能再响应来自客户端的请求了，最后返回server no reult。初次使用nodejs写，没有系统学习过，请大神帮忙看看我这代码有啥问题。

process.on('uncaughtException', function (err) {
  console.log('Caught exception: ' + err);
});
var config=require(‘./config.json’);
if(config){
for(var k in config){
console.log(k+’:’+config[k]);
}
}
var LOCAL_PORT = config.localPort || 1337;
var REMOTE_PORT = config.mailchatServerPort || 7777;
var REMOTE_ADDR = config.mailchatServer || '10.25.2.17’;
var log4js = require(‘log4js’);
log4js.configure({
appenders: [
{ type: ‘console’ },
//{ type: 'file’, filename: 'logs/cheese.log’, category: ‘cheese’ },
{ type: 'dateFile’, filename: 'info.log’, pattern: '-yyyy-MM-dd’, alwaysIncludePattern: false, category: ‘dateFileLog’ }
],
replaceConsole:true,
levels:{
dateFileLog: ‘INFO’
}
});
var log = log4js.getLogger(‘dateFileLog’);
http = require(‘http’);
http.createServer(onRequest).listen(LOCAL_PORT);
log.info('Gateway Server listen at ' + LOCAL_PORT + ‘.’);
function onRequest(client_req, client_res) {
if(client_req.url.indexOf(‘/favicon.ico’)==0) return;
log.info('Request URL: ' + client_req.url);
log.info('Request Header: ' + JSON.stringify(client_req.headers));
var options = {
hostname: REMOTE_ADDR,
port: REMOTE_PORT,
path: client_req.url,
method: client_req.method,
headers: client_req.headers
};
client_res.setHeader(‘Content-type’,’application/json’);
client_res.setHeader(‘Access-Control-Allow-Origin’,’*’);
var proxy = http.request(options, function (res) {
log.info('From ChatServer STATUS: ' + res.statusCode);
log.info('From ChatServer HEADERS: ' + JSON.stringify(res.headers));
res.setEncoding(‘UTF8’);
res.pipe(client_res, {
end: true
});
});
proxy.on('error’, function(e) {
log.info('Problem with request from ChatServer: ' + e.message);
client_res.statusCode=500;
client_res.end();
//client_res.end('cache server error: '+e.message);
});
proxy.setTimeout(10*1000, function(){
log.info(‘Request Timeout From ChatServer in 10 seconds, then response code 500’);
client_res.statusCode=500;
client_res.end();
//client_res.end(‘Reuqest Timeout’);
});
client_req.setTimeout(10*1000, function(){
log.info(‘Timeout’);
client_res.statusCode=500;
client_res.end();
});
client_req.pipe(proxy, {
end: true
});
}