Bugs item #1233264, was opened at 2005-07-06 02:10
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Category: libcurl
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Daniel Stenberg (bagder)
Summary: HTTP proxy tunneling with NTLM proxy authenticate won't work

Initial Comment:
Well, not much more to add ...
I have a ISA server here which required NTLM
authentication and I'm trying to tunnel the proxy ... but
obviously Curl_ConnectHTTPProxyTunnel isn't quite
capable of this:

* About to connect() to 192.168.100.2 port 8080
* Trying 192.168.100.2... * connected
* Connected to 192.168.100.2 (192.168.100.2) port 8080
* Establish HTTP proxy tunnel to potsdam:80
> CONNECT potsdam:80 HTTP/1.0
Host: potsdam:80
Proxy-Connection: Keep-Alive

< HTTP/1.1 407 Proxy Authentication Required ( Der ISA
Server erfordert Autorisierung, um die Anforderung durchf
&#9500;&#9565;hren z
u k&#9500;Ânnen. Der Zugriff auf den Webproxydienst wird
verweigert. )
< Via: 1.1 ISA-SERVER
< Proxy-Authenticate: Negotiate
< Proxy-Authenticate: Kerberos
< Proxy-Authenticate: NTLM
< Connection: close
< Proxy-Connection: close
< Pragma: no-cache
< Cache-Control: no-cache
< Content-Type: text/html
< Content-Length: 757
<
* Proxy auth using NTLM with user 'Administrator'
> CONNECT potsdam:80 HTTP/1.0
Host: potsdam:80
Proxy-Authorization: NTLM
TlRMTVNTUAABAAAAAgIAAAAAAAAgAAAAAAAAACA
AAAA=
Proxy-Connection: Keep-Alive

* Proxy CONNECT aborted
* Closing connection #0
error (56): Proxy CONNECT aborted

As you might be seeing: libcurl tries to reuse the
connection but the proxy has already closed it.
ConnectHTTPProxyTunnel doesn't notice this, tries to
send it's type1-packet to the server of the
already-closed-connection and ... BANG!

:-/

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Received on 2005-07-06