On Tuesday, February 12, 2013 9:06:22 AM UTC+7, s thapa wrote:
>
> Thanks asynqronic,
>
> Following code,
>
> *profiles3.js*
>
> module.exports = function(callback){
> var spawn = require('child_process').spawn,
> ls = spawn('ls', ['-lh', '/usr']);
>
> ls.stdout.on('data', callback);
> ls.stderr.on('data', callback);
> ls.on('exit', callback);
> };
>
> *index.js*
>
> exports.index = function(req, res){
> profiles3(function(data){
> res.writeHead(200, {
> "Content-Type": "text/plain",
> "Content-Length": data.length
> });
> res.end(data, 'uft-8');
> });
> };
>
>
> Giving following error,
>
> Express server listening on port 3000
> GET / 200 15ms
>
> http.js:687
> throw new Error('Can\'t render headers after they are sent to the
> client.'
> ^
> Error: Can't render headers after they are sent to the client.
> at ServerResponse.OutgoingMessage._renderHeaders (http.js:687:11)
> at ServerResponse.res._renderHeaders
> (/home/sthapa/Node/stylus5/node_modules/
> express.io/node_modules/connect/lib/patch.js:69:27)
>
>
My code is supposed to use plain Node. If you use express.io that is
actually superset of Express.js I think you should use Express's function
res.send(). It will set all headers automatically except Content-Type that
should be set manually because type of your data is probably Buffer. Try
this code:
*index.js*
exports.index = function(req, res){
profiles3(function(data){
res.set('Content-Type', 'text/html');
res.send(data);
};
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