Merge pull request #42 from northwesternmutual/writeheader-fix

writeheader bug fix

CHANGELOG.md

@@ -4,9 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [1.1.2] - 2017-08-16
 ### Changed
 - If InfluxDB database doesn't exist when writing, it will be created.
+- Fixed bug causing `http: multiple response.WriteHeader calls` error if `io.Copy` failed when writing the response.
 
 ## [1.1.1] - 2017-08-15
 ### Changed

monitor/influxdb_test.go

@@ -1,3 +1,23 @@
+// Copyright (c) 2017 Northwestern Mutual.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
 package monitor
 
 import (

steps/writeresponse.go

@@ -64,9 +64,8 @@ func (step WriteResponseStep) Do(ctx context.Context, m *metrics.Metrics, c *con
 	w.WriteHeader(resp.StatusCode)
 
 	if _, err := io.Copy(w, closer); err != nil {
-		return err
+		return nil
 	}
 
 	return nil
-
 }