From db8ccea9daea048e4617a0a308307f9fc909df7b Mon Sep 17 00:00:00 2001
From: Hang Xie <7977860+hangxie@users.noreply.github.com>
Date: Tue, 7 Jul 2020 07:20:20 -0700
Subject: [PATCH] Close connection to scrape target after retrieving data (#39)

---
 Dockerfile                  | 2 +-
 prometheus_to_cloudwatch.go | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index f72a989..cdba8d4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.10.0 as builder
+FROM golang:1.13.11 as builder
 RUN mkdir -p /go/src/github.com/cloudposse/prometheus-to-cloudwatch
 WORKDIR /go/src/github.com/cloudposse/prometheus-to-cloudwatch
 COPY . .
diff --git a/prometheus_to_cloudwatch.go b/prometheus_to_cloudwatch.go
index 6db0e25..2f4bdaf 100644
--- a/prometheus_to_cloudwatch.go
+++ b/prometheus_to_cloudwatch.go
@@ -514,6 +514,7 @@ func fetchMetricFamilies(
 	}
 	client := &http.Client{Transport: transport}
 	decodeContent(client, url, ch)
+	client.CloseIdleConnections()
 }
 
 func decodeContent(client *http.Client, url string, ch chan<- *dto.MetricFamily) {