nginx: reduce client_body_buffer_size for non-media APIs

This is set to match the limit enforced by synapse itself.

Author: thestinger

nginx/nginx.conf

@@ -191,7 +191,9 @@ http {
             proxy_send_timeout 15s;
             proxy_read_timeout 600s;
 
-            client_max_body_size 100m;
+            # MAX_PDU_SIZE = 65536
+            # MAX_REQUEST_SIZE = 200 * MAX_PDU_SIZE
+            client_max_body_size 13107200;
             client_body_buffer_size 16k;
 
             proxy_pass http://synapse-main;
@@ -209,6 +211,7 @@ http {
             }
 
             location ~ ^/_matrix/media/|^/_matrix/client/v1/media/|^/_matrix/federation/v1/media/ {
+                client_max_body_size 100m;
                 proxy_pass http://synapse-media_repository;
             }
 
@@ -242,7 +245,9 @@ http {
             proxy_send_timeout 15s;
             proxy_read_timeout 600s;
 
-            client_max_body_size 100m;
+            # MAX_PDU_SIZE = 65536
+            # MAX_REQUEST_SIZE = 200 * MAX_PDU_SIZE
+            client_max_body_size 13107200;
             client_body_buffer_size 16k;
 
             proxy_pass http://synapse-main;