I have no experience with domains given that's still unstable. If you use uncaughtException it will fix your problem temporarily: the server will not shutdown, this error will not cause any problems for the users, but you still have to find it and fix it because something is wrong.
Can you also check that you are not calling res.send() or res.json() or res.end() twice? After you find which endpoint is causing the issue by enabling logs or creating some of them you should be able to track it down. Cheers On Thu, Dec 12, 2013 at 7:17 PM, Hseu-Ming Chen <[email protected]> wrote: > Hi Bruno, > Thank you for your input. > > > > if (err) { callback(err); } > > callback(null,result); > > Which causes the callback to be called twice. > > i searched for similar pattern in my code without finding any > > > > Increase your log level and make sure that you have proper logging > > and request/response logging. > > Yes, i'll ask Winston to be more chatty. > > > > Ps: that error is not a node.js version issue > > agreed > > My node.js program is basically a reverse proxy and at the same time a > [private|local] CA that authenticates client-side X.509 certs. > i'm using http-proxy but i don't think i can conveniently blame the > underlying "battle-hardened" http-proxy either. > > > > Ps: use process.on uncaughtException and the server will not crash > > Be careful with that :) > > Instead of > process.on('uncaughtException') > are you thinking of something like "domain"? i need to read up a bit on > it since > * it is still "unstable" > * unsure whether i can use it in node 0.8.22 > > Thanks again. > > > > > On Tue, Dec 10, 2013 at 3:57 AM, Bruno Fuster <[email protected]>wrote: > >> Ps: use process.on uncaughtException and the server will not crash >> >> Be careful with that :) >> >> On Dec 9, 2013, at 9:01 PM, ming <[email protected]> wrote: >> >> Hi, >> i'm running a node application which crashes probably once a week due to >> an uncaught "Can't render headers ..." exception. The node.js version in >> use is 0.8.22 and the OS distro is RHEL 6.2. i did not find the definitive >> pattern of sequence of events which led to the crash though. >> >> The stack trace looks like: >> >> http.js:715 >> 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:715:11) >> at ServerResponse.writeHead (http.js:1059:20) >> at Socket.proxyError >> (/opt/share/node_modules/http-proxy/lib/node-http-proxy/http-proxy.js:193:9) >> at Socket.g (events.js:192:14) >> at Socket.EventEmitter.emit (events.js:126:20) >> at Socket.connect.require.lookup.addressType (net.js:699:16) >> at process.startup.processNextTick.process._tickCallback >> (node.js:245:9) >> >> According to my web surfing, several developers also ran into similar >> problem in the past but it is not clear to me what the culprit is. i know >> the node.js version i used (0.8.22) has some age but it seems that similar >> problems also exist in 0.10.10 so i'm not sure upgrading node.js helps in >> this case. Moreover, to upgrade node.js in our environment is somewhat >> painful and not really under my control. >> >> Any suggestion how i can track down and rectify the problem? >> >> Thanks. >> >> >> >> -- >> -- >> Job Board: http://jobs.nodejs.org/ >> Posting guidelines: >> https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines >> You received this message because you are subscribed to the Google >> Groups "nodejs" group. >> To post to this group, send email to [email protected] >> To unsubscribe from this group, send email to >> [email protected] >> For more options, visit this group at >> http://groups.google.com/group/nodejs?hl=en?hl=en >> >> --- >> You received this message because you are subscribed to the Google Groups >> "nodejs" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> >> For more options, visit https://groups.google.com/groups/opt_out. >> >> -- >> -- >> Job Board: http://jobs.nodejs.org/ >> Posting guidelines: >> https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines >> You received this message because you are subscribed to the Google >> Groups "nodejs" group. >> To post to this group, send email to [email protected] >> To unsubscribe from this group, send email to >> [email protected] >> For more options, visit this group at >> http://groups.google.com/group/nodejs?hl=en?hl=en >> >> --- >> You received this message because you are subscribed to a topic in the >> Google Groups "nodejs" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/nodejs/RK5jfu5cOhY/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> >> For more options, visit https://groups.google.com/groups/opt_out. >> > > -- > -- > Job Board: http://jobs.nodejs.org/ > Posting guidelines: > https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines > You received this message because you are subscribed to the Google > Groups "nodejs" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/nodejs?hl=en?hl=en > > --- > You received this message because you are subscribed to the Google Groups > "nodejs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- Bruno Fuster -- -- Job Board: http://jobs.nodejs.org/ Posting guidelines: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines You received this message because you are subscribed to the Google Groups "nodejs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en --- You received this message because you are subscribed to the Google Groups "nodejs" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
