HA-Proxy killing connection to server

[abn]

haproxy seems to be closing its connection before the response is completed

uwsgi_response_write_body_do() TIMEOUT !!!
IOError: write error
[pid: 28897|app: 0|req: 299/8675] IP () {52 vars in 1198 bytes} [Mon Sep  9 06:22:50 2013] GET /service/v2/update/1970-01-01T00:00:00/ => generated 25326655 bytes in 68404 msecs (HTTP/1.1 200) 5 headers in 354 bytes (343 switches on core 1)

uwsgi_response_write_body_do() TIMEOUT !!!
IOError: write error
[pid: 2925|app: 0|req: 1/47] IP () {52 vars in 1198 bytes} [Mon Sep  9 06:29:42 2013] GET /service/v2/update/1970-01-01T00:00:00/ => generated 46276210 bytes in 69777 msecs (HTTP/1.1 200) 5 headers in 354 bytes (459 switches on core 0)

[abn]

Isolated a fix for the issue. It seems that haproxy drops the connection to client as a side-effect to http-server-close.

    option http-server-close
+    option http-pretend-keepalive
    #option forwardfor       except 127.0.0.0/8

[abn]

Had to add the following option to uwsgi.ini

http-keepalive = true

Also modified haproxy.cfg for good measure:

-    timeout client          1m
+    timeout client          3m
-    timeout server          1m
+    timeout server          3m

[abn]

Adding a mitigation to handle slow response generation:
victims/victims-server-openshift@87db085

[abn]

The error message seems to be triggered due to a socket-timeout looking at the uwsgi code base. The default was 4s.

Seems to me that there is some delay in writing records to response stream. This will be an issue irrelevant of the update size.