From 45d12b11a88808b98dd91c3321a2bf6715bfeb1c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniele=20Vigan=C3=B2?= <daniele@vigano.me>
Date: Sun, 21 Jun 2020 22:49:35 +0200
Subject: [PATCH] Fix 400 error with Arduino telemetry and Nginx This was
 caused by the client not waiting for a response. Also Content-Length header
 was bogus.

---
 arduino/tempLightSensor/tempLightSensor.ino | 2 +-
 docker/ingress/nginx.conf                   | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arduino/tempLightSensor/tempLightSensor.ino b/arduino/tempLightSensor/tempLightSensor.ino
index cacc0ba..f6d1f4b 100644
--- a/arduino/tempLightSensor/tempLightSensor.ino
+++ b/arduino/tempLightSensor/tempLightSensor.ino
@@ -162,7 +162,7 @@ void postData(const netConfig &postAPI, const String &URL, const DynamicJsonDocu
     ethClient.println(postAPI.port);
     ethClient.println("Content-Type: application/json");
     ethClient.print("Content-Length: ");
-    ethClient.println(measureJsonPretty(json));
+    ethClient.println(measureJson(json));
     ethClient.println("Connection: close");
     ethClient.println();
     serializeJson(json, ethClient);
diff --git a/docker/ingress/nginx.conf b/docker/ingress/nginx.conf
index ae019e3..651bf1a 100644
--- a/docker/ingress/nginx.conf
+++ b/docker/ingress/nginx.conf
@@ -51,6 +51,7 @@ http {
     
         location / {
             proxy_pass           http://bite;
+            proxy_http_version   1.1;
             proxy_set_header     Host               $http_host;
             proxy_set_header     X-Real-IP          $remote_addr;
             proxy_set_header     X-Forwarded-Host   $host:$server_port;
@@ -59,6 +60,9 @@ http {
     
             proxy_read_timeout      300;
             proxy_connect_timeout   300;
+
+            ## !- This is mandatory for IoT that do not wait for a reply -! ##
+            proxy_ignore_client_abort on;
         }
 
         location /mqtt {