Problem with basic proxy authentication

[Miloslav Švarc]

Hello,

I'm succesfuly using Openconnect 6 or 7 in different configurations,
but I have a problem with just one proxy with basic auth. I'm able to
connect through it with different programs (wget, corkscrew,
openvpn...), but when I run this command, no joy.

# openconnect SERVER --proxy=http://USER:PASSWD@PROXY:8080/ --proxy-auth Basic

POST https:/SERVER/
Attempting to connect to proxy PROXY:8080
Requesting HTTP proxy connection to SERVER:443
Got HTTP response: HTTP/1.1 407 Proxy Authentication Required
Server: Sun-Java-System-Web-Proxy-Server/4.0
Date: Fri, 28 Nov 2014 11:07:04 GMT
Content-length: 146
Content-type: text/html
Proxy-authenticate: Basic realm="PROXY"
Connection: close
Set-Cookie: BIGipServerpool_proxy=****o8080; path=/
HTTP body length:  (146)
Attempting HTTP Basic authentication to proxy
Error fetching HTTPS response
Failed to open HTTPS connection to SERVER

I suspect the proxy doesn't respond immediately after request, can it
cause this kind of behaviour?

Thanks for reply, Panther