Hello Nginx team,

I am trying to install our solution with Nginx as a reverse proxy. And I am having some problem shown as below.

172.30.2.84 - - [14/Aug/2012:19:51:17 +0900] "GET /api/local/test.doc/info HTTP/1.1" 400 971 "-"
172.30.2.84 - - [14/Aug/2012:19:51:17 +0900] "GET /api/local/info HTTP/1.1" 400 971 "-"
172.30.2.84 - - [14/Aug/2012:19:51:17 +0900] "GET /api/local/info HTTP/1.1" 400 971 "-"
172.30.2.84 - - [14/Aug/2012:19:51:17 +0900] "GET /api/local/info HTTP/1.1" 400 971 "-"
172.30.2.84 - - [14/Aug/2012:19:51:17 +0900] "GET /api/local/test.doc/info HTTP/1.1" 400 971 "-"
172.30.2.84 - - [14/Aug/2012:19:51:17 +0900] "GET /api/local/list HTTP/1.1" 400 971 "-"
172.30.2.84 - - [14/Aug/2012:19:51:17 +0900] "GET /api/local/info HTTP/1.1" 400 971 "-"

As you can see, 400 bad request error occurred. I have already experienced that I used to handle pound reverse proxy server with our solution.
Pound server has xhttp option that allow WEBDAV method from outside through itself. I could solve similar issue under pound server by using xhttp option. below description quoted from pound man page.

xHTTP value
Defines which HTTP verbs are accepted. The possible values are:

(default) accept only standard HTTP requests (GET, POST, HEAD).
additionally allow extended HTTP requests (PUT, DELETE).
additionally allow standard WebDAV verbs (LOCK, UNLOCK, PROPFIND, PROPPATCH, SEARCH, MKCOL, MOVE, COPY, OPTIONS, TRACE, MKACTIVITY, CHECKOUT, MERGE, REPORT).
additionally allow MS extensions WebDAV verbs (SUBSCRIBE, UNSUBSCRIBE, NOTIFY, BPROPFIND, BPROPPATCH, POLL, BMOVE, BCOPY, BDELETE, CONNECT).
additionally allow MS RPC extensions verbs (RPC_IN_DATA, RPC_OUT_DATA).

I want to know same function in Nginx server to solve issue that blocking INFO,LIST,LOCK,UNLOCK.
Please let me know how to configure or the way.

Thank you in advance.