nginx HTTP/1.0 upstream keepalive

gistfile1.diff

--- nginx-1.1.14.orig/src/http/ngx_http_upstream.c      2012-01-19 00:07:43.000000000 +0900
+++ nginx-1.1.14/src/http/ngx_http_upstream.c   2012-02-09 17:11:02.000000000 +0900
@@ -3426,6 +3426,13 @@
         r->upstream->headers_in.connection_close = 1;
     }
 
+    if (ngx_strlcasestrn(h->value.data, h->value.data + h->value.len,
+                         (u_char *) "keep-alive", 10 - 1)
+        != NULL)
+    {
+        r->upstream->headers_in.connection_close = 0;
+    }
+
     return NGX_OK;
 }