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Use res.headersSent to detect if the headers have been sent #15

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Use res.headersSent to detect if the headers have been sent #15

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5 changes: 3 additions & 2 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -87,9 +87,10 @@ function finalhandler (req, res, options) {
var headers
var msg
var status
var headersSent = res.headersSent || res._header

// ignore 404 on in-flight response
if (!err && res._header) {
if (!err && headersSent) {
debug('cannot 404 after headers sent')
return
}
Expand Down Expand Up @@ -125,7 +126,7 @@ function finalhandler (req, res, options) {
}

// cannot actually respond
if (res._header) {
if (headersSent) {
debug('cannot %d after headers sent', status)
req.socket.destroy()
return
Expand Down