Hello,
I can upload a file to my Apache web server using Curl just fine:
echo "[$(date)] file contents." | curl -T -
http://WEB-SERVER/upload/sample.put
However, if I put a Squid proxy server in between, then I am not able to:
echo "[$(date)] file contents." | curl -x http://SQUID-PROXY:3128 -T -
http://WEB-SERVER/upload/sample.put
Curl reports the following error:
*Note: The following error response was in HTML format, but I've removed
the tags for ease of reading.*
ERROR: The requested URL could not be retrieved
ERROR
The requested URL could not be retrieved
While trying to retrieve the URL:
http://WEB-SERVER/upload/sample.put
The following error was encountered:
Unsupported Request Method and Protocol
Squid does not support all request methods for all access protocols.
For example, you can not POST a Gopher request.
Your cache administrator is root.
My `squid.conf` doesn't seem to be having any ACL/rule that should disallow
based on the `src` or `dst` IP addresses, or the `protocol`, or the HTTP
`method`... **as I can do an `HTTP POST` just fine between the same client
and the web server, with the same proxy sitting in between.**
In case of the failing `HTTP PUT` case, to see the request and response
traffic that was actually occurring, I placed a `netcat` process in between
Curl and Squid, and this is what I saw:
**Request:**
PUT http://WEB-SERVER/upload/sample.put HTTP/1.1
User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5
OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5
Host: WEB-SERVER
Pragma: no-cache
Accept: */*
Proxy-Connection: Keep-Alive
Transfer-Encoding: chunked
Expect: 100-continue
**Response:**
HTTP/1.0 501 Not Implemented
Server: squid/2.6.STABLE21
Date: Sun, 13 May 2012 02:11:39 GMT
Content-Type: text/html
Content-Length: 1078
Expires: Sun, 13 May 2012 02:11:39 GMT
X-Squid-Error: ERR_UNSUP_REQ 0
X-Cache: MISS from SQUID-PROXY-FQDN
X-Cache-Lookup: NONE from SQUID-PROXY-FQDN:3128
Via: 1.0 SQUID-PROXY-FQDN:3128 (squid/2.6.STABLE21)
Proxy-Connection: close
<SNIPPED the HTML error response already shown earlier above>
*Note: I have anonymized the IP addresses and server names throughout for
readability reasons.*
*Note: I had posted this question on [StackOverflow also][1], but got no
helpful response. Posting it here, in case people on StackOverflow are
seeing this as a non-programming question and not taking interest.*
Regards,
/HS
[1]:
http://stackoverflow.com/questions/10568655/unable-to-test-http-put-based-file-upload-via-squid-proxy
