chore(instrumentations): add debug warning for multiple writeHead calls

dszakallas · dszakallas · commit 7cdc9d1973a4 · 2017-01-23T12:42:27.000+01:00
diff --git a/lib/instrumentations/core/http/server.js b/lib/instrumentations/core/http/server.js
@@ -160,6 +160,8 @@ function httpServer (listener, agent) {
           }
           agent.rpmMetrics.addResponseTime(ssTime - srTime)
           agent.rpmMetrics.addStatusCode(response.statusCode)
+        } else {
+          debug('#httpServer', '[Warning] writeHead called multiple times, wrongly reported status codes may occur')
         }
         return original.apply(response, arguments)
       }

Original file line number	Diff line number	Diff line change
`@@ -160,6 +160,8 @@ function httpServer (listener, agent) {`
`160`	`160`	`}`
`161`	`161`	`agent.rpmMetrics.addResponseTime(ssTime - srTime)`
`162`	`162`	`agent.rpmMetrics.addStatusCode(response.statusCode)`
	`163`	`+ } else {`
	`164`	`+ debug('#httpServer', '[Warning] writeHead called multiple times, wrongly reported status codes may occur')`
`163`	`165`	`}`
`164`	`166`	`return original.apply(response, arguments)`
`165`	`167`	`}`