Merge pull request #970 from SkynetLabs/fix-internal-nginx-timeouts

fix issue with "unexpected end of file" in health checks on subdomain test

docker/nginx/conf.d/client.conf

@@ -142,6 +142,7 @@ server {
 
 	location /hns {
 		include /etc/nginx/conf.d/include/proxy-buffer;
+		include /etc/nginx/conf.d/include/proxy-pass-internal;
 
 		# variable definititions - we need to define a variable to be able to access it in lua by ngx.var.something
 		set $skylink ''; # placeholder for the raw 46 bit skylink
@@ -244,6 +245,8 @@ server {
 	# it is not suitable for every registry call but some requests might be cached
 	# and we are using it currently for caching registry resolutions from /hns calls
 	location /skynet/registry/cached {
+		include /etc/nginx/conf.d/include/proxy-pass-internal;
+		
 		internal; # internal endpoint only
 		access_log off; # do not log traffic
 
@@ -460,6 +463,7 @@ server {
 
 	location @dnslink_lookup {
 		include /etc/nginx/conf.d/include/proxy-buffer;
+		include /etc/nginx/conf.d/include/proxy-pass-internal;
 
 		set $dnslink '';
 
@@ -480,19 +484,21 @@ server {
 		}
 
 		proxy_set_header Dnslink-Lookup "";
-		proxy_pass http://127.0.0.1/$dnslink/$request_uri;
+		proxy_pass http://127.0.0.1/$dnslink$request_uri;
 	}
 
 	location @base32_subdomain {
 		include /etc/nginx/conf.d/include/proxy-buffer;
+		include /etc/nginx/conf.d/include/proxy-pass-internal;
 
-		proxy_pass http://127.0.0.1/$base32_subdomain/$request_uri;
+		proxy_pass http://127.0.0.1/$base32_subdomain$request_uri;
 	}
 
 	location @hns_domain {
 		include /etc/nginx/conf.d/include/proxy-buffer;
+		include /etc/nginx/conf.d/include/proxy-pass-internal;
 
-		proxy_pass http://127.0.0.1/hns/$hns_domain/$request_uri;
+		proxy_pass http://127.0.0.1/hns/$hns_domain$request_uri;
 	}
 
 	location @purge {
@@ -508,6 +514,7 @@ server {
 
 	location ~ "^/file/([a-zA-Z0-9-_]{46}(/.*)?)$" {
 		include /etc/nginx/conf.d/include/proxy-buffer;
+		include /etc/nginx/conf.d/include/proxy-pass-internal;
 
 		rewrite /file/(.*) $1 break; # drop the /file/ prefix from uri
 

docker/nginx/conf.d/include/proxy-pass-internal

@@ -0,0 +1,10 @@
+# ----------------------------------------------------------------
+# this file should be included on all locations that proxy_pass to
+# another nginx location - internal nginx traffic
+# ----------------------------------------------------------------
+
+# increase the timeout on internal nginx proxy_pass locations to a
+# value that is significantly higher than expected and let the end
+# location handle correct timeout
+proxy_read_timeout 30m;
+proxy_send_timeout 30m;