why 'client closed prematurely connection while sending request to upstream' ?

[Yu.Cheung]

it seems because the body size does not match the size
"Content-Length: " defined.
when the content-length is the body's size, it will be ok.
but i tried the wrong length in the request header, the 'client closed
...' came... [ I just want to make sure whether it will work in this
way, for  security ]
I am not sure about this.
but this working way is what i need.  :)


2009/4/21 Yu.Cheung <nkcheungyu at gmail.com>:
> Hi,
>    All.
>    I want to proxy twice. but there was something wrong with it.
>
>   what I want to do:
>
>    client send request----->nginx server------->sending(proxy_pass)
> its header to the backend server 1 ---->back to ngx server---->proxy
> pass to the second backend server---->back to ngx server---->response
> to client.
>
>    but when the request was sent to backend server 1, 'the client
> closed prematurely connection while sending request to upstream' came,
>  all of my http servsers are Nginx.
>
>   the simple conf (just use virtual 3 servers) is:
>
>   http {
>  include       mime.types;
>  default_type  text/html;
>  expires       -1;
>
>
>  sendfile        on;
>
>
>  client_max_body_size 10000m;
>
>
>
>  server {
>
>          server_name front;
>          listen 8389;
>
>          location / {
>
>          if ($uri ~ "/(.*)") {
>                  set $fn $1;
>                  }
>
>          proxy_ignore_client_abort on;
>
>          proxy_pass_request_body off;
>          proxy_pass http://10.68.3.23:8390;
>
>
>          location /pass {
>              proxy_pass_request_body on;
>              proxy_pass http://10.68.3.23:8388/$fn;
>        }
>
>          location /download {
>             proxy_pass http://10.68.3.23:8388/$fn;
>                  }
>
>
>          }#end of location /
>
>          }#server
>
>  server {
>
>          server_name transfer;
>          listen 8390;
>          proxy_ignore_client_abort  on;
>
>          location / {
>                 set $loc "/pass";
>                 add_header "X-Accel-Redirect" $loc;
>                 return 301;
>            }
>
>
>          }#backend server 1
>
>
> server {
>     server_name storage;
>     listen 8388;
>
>
>
>    location / {
>                root /data;
>                 client_body_temp_path /data1/client_tmp;
>
>                 dav_methods PUT DELETE MKCOL COPY MOVE;
>
>                 create_full_put_path on;
>                 dav_access user:rw group:rw all:rw;
>
>                  limit_except GET {
>                         allow all;
>                         }
>    }
>
>  }#backend server 2
>
>
> }#http
>
> ---------------------------
> when i put one file to test, while sending to the first upstream
> server(backend 1), the connection closed.
> why ?
>
> Thanks.
>