fix for TUS uploads timing out (#1052)

* increase timeouts

* align

* remove client_header_timeout

* temporarily increase limit

* disable proxy buffering off

* formatting

* disable proxy request bufferring

* do not use upgrade

* 6 parallel connections

* test

* test

* test

* test

* test

* test

* test

* test

* test

* make sure it all works

* make sure it all works

* limit back to 1

docker/nginx/conf.d/client.conf

@@ -330,18 +330,21 @@ server {
 		include /etc/nginx/conf.d/include/cors;
 		include /etc/nginx/conf.d/include/track-upload;
 
-		client_max_body_size 50M; # tus chunks size is 40M + leaving 10M of breathing room
+		# TUS chunks size is 40M + leaving 10M of breathing room
+		client_max_body_size 50M;
 		
-		# increase request timeouts
-		proxy_read_timeout 600;
-		proxy_send_timeout 600;
+		# Those timeouts need to be elevated since skyd can stall reading 
+		# data for a while when overloaded which would terminate connection
+		client_body_timeout 1h;
+		proxy_send_timeout  1h;
 
-		proxy_request_buffering off; # stream uploaded files through the proxy as it comes in
-		proxy_set_header Expect $http_expect;
+		# Add X-Forwarded-* headers
+		proxy_set_header X-Forwarded-Host  $host;
+		proxy_set_header X-Forwarded-Proto $scheme;
 
 		# rewrite proxy request to use correct host uri from env variable (required to return correct location header)
 		set_by_lua $SKYNET_SERVER_API 'return os.getenv("SKYNET_SERVER_API")';
-		proxy_redirect https://siad $SKYNET_SERVER_API;
+		proxy_redirect $scheme://$host $SKYNET_SERVER_API;
 
 		# proxy /skynet/tus requests to siad endpoint with all arguments
 		proxy_pass http://siad;