NTLM proxy auth: curl-loader disconnects after receiving 407 ( curl --proxy-ntlm ... works ok )

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Hi everyone,

I am trying to test NTLM proxy authentication for an explicit proxy.

I am aware about curllib's  issues with NTLM; I believe it may not apply to
my case, as I can authenticate successfully using plain CURL

curl --proxy "http://web-cache.usyd.edu.au:8080" --proxy-ntlm --proxy-user
'mss\User:*********' www.google.com
I get:

<HTML><HEAD><meta http-equiv="content-type"
content="text/html;charset=utf-8">
<TITLE>302 Moved</TITLE></HEAD><BODY>
<H1>302 Moved</H1>
The document has moved
<A HREF="http://www.google.com.au/">here</A>.
</BODY></HTML>

When I am using curl-loader connection, it disconnects after recieving 407
as ( see below )

# 1285564151266 Mon Sep 27 15:09:11 2010
# msec_offset cycle_no url_no client_no (ip) indic info
1 0 0 1 == About to connect() to proxy web-cache.usyd.edu.au port 8080 (#0)
eff-url: url http://www.google.com
9 0 0 1 !! ERCL 407 HTTP/1.1 407 Proxy Authentication Required^M eff-url:
url http://www.google.com
23 0 0 1 !! ERCL 407 HTTP/1.1 407 Proxy Authentication Required^M eff-url:
url http://www.google.com
23 0 0 1 == Closing connection #0 eff-url: url http://www.google.com

I suspect that my poor understanding of the topic is to blame; I would
greatly appreciate if you have a quick look the configuration file and tell
me if what is wrong.

########### GENERAL SECTION ################################
BATCH_NAME=proxy-test
CLIENTS_NUM_MAX=10 #Same as CLIENTS_NUM
CLIENTS_NUM_START=1
CLIENTS_RAMPUP_INC=1
INTERFACE = eth0
NETMASK=24
IP_ADDR_MIN=172.16.236.229
IP_ADDR_MAX=172.16.236.229
CYCLES_NUM = 100
#FRESH_CONNECT=1
URLS_NUM=1

########### Login URL SECTION #######################
URL=http://www.google.com
URL_SHORT_NAME="google"
REQUEST_TYPE=GET
PROXY_AUTH_METHOD = NTLM
PROXY_AUTH_CREDENTIALS='mss\ivan:***********'
TIMER_URL_COMPLETION = 1000
TIMER_AFTER_URL_SLEEP = 200

Thank you in advance.

-- 
Ivan