Hi All!

Maybe I'm doing something wrong, but I can't get NTLM proxy authentication to work with libcurl (or something wrong with the ISA proxy server).
As you can see in the sample conversation, the initial ntlm message was sent, and I received the response also, but the last message won't go out (where username, and password should go out). (If I turn on proxy_redirection, then libcurl sends the last message to the server, but this ISA server does not support CONNECT.)
Can anybody tell me, why?

Thanx all Your help!
Best regards,
Tamas

Code snippet:
curl_easy_setopt (curl, CURLOPT_DEBUGDATA, ctx);
curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION,curl_debug_cb);
curl_easy_setopt(curl, CURLOPT_URL, "www.xxx.com");
curl_easy_setopt(curl, CURLOPT_PROXYAUTH, CURLAUTH_NTLM );
curl_easy_setopt(curl, CURLOPT_PROXY, "http:// TESZT.ELEK:1234_at_1.2.3.4:8000");
curl_easy_setopt (curl, CURLOPT_USERAGENT, "UserAgent");
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)response);
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
curl_easy_setopt(curl, CURLOPT_AUTOREFERER, 1);
curl_easy_setopt(curl,CURLOPT_HTTPGET,1);
cres = curl_easy_perform(network_ctx->curl);

Sample conversation (not with actual data)

About to connect() to proxy 123.123.123.123 port 8080 (#0)
  Trying 123.123.123.123... connected
Connected to 123.123.123.123 (123.123.123.123) port 8080 (#0)
Proxy auth using NTLM with user 'TESZT.ELEK'
GET http://www.microsoft.com/ HTTP/1.1

Proxy-Authorization: NTLM TlRMTVNTUAABAAAAt4II4gAAAAAAAAAAAAAAAAAAAAAFASgKAAAADw==

User-Agent: UserAgent

Host: www.microsoft.com

Pragma: no-cache

Accept: */*

Proxy-Connection: Keep-Alive

HTTP/1.1 407 Proxy Authentication Required ( Access is denied. )

Via: 1.1 AAAA00

Proxy-Authenticate: NTLM TlRMTVNTUAACAAAACAAIADgAAAA1goniHPBnlvDjTEQAAAAAAAAAAIgAiABAAAAA
BQLODgAAAA9BAEEAQQBBAAIACABBAEEAQQBBAAEADABCAEIAQgBCADAAMAAEABoA
aABoAC4AYQBhAGEAYQAuAGwAbwBjAGEAbAADACgAYgBiAGIAYgBiAGIALgBoAGgA
LgBhAGEAYQBhAC4AbABvAGMAYQBsAAUAGgBoAGgALgBhAGEAYQBhAC4AbABvAGMA
YQBsAAAAAAA=

Connection: Keep-Alive

Proxy-Connection: Keep-Alive

Pragma: no-cache

Cache-Control: no-cache

Content-Type: text/html

Content-Length: 0

Connection #0 to host 123.123.123.123 left intact
Maximum (0) redirects followed
Closing connection #0

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Received on 2007-04-12