Implementing CONNECT in nginx

[Thomas Glanzmann]

Hello everyone,
I would like to extend nginx with a CONNECT statement which connects to
a TCP socket. Could someone walk me through which source files I need to
modify and which fucntions I should have a look at?

Or if there is anything else that can give me a quickstart?

My use case is that I would like to share one tcp port between a
webserver that I already have and a SSL VPN. The SSL VPN does the
following:

CONNECT /CSCOSSLC/tunnel HTTP/1.1
Host: lync.gmvl.de
User-Agent: Cisco AnyConnect VPN Agent for Windows 3.0.07059
Cookie: webvpn=02F9D1 at 12288@188C at D7B405A4A46480CF364F1A6FD51998A0025DC727
X-CSTP-Version: 1
X-CSTP-Hostname: lenovo
X-CSTP-MTU: 1306
X-CSTP-Address-Type: IPv6,IPv4
X-DTLS-Master-Secret: D40F07275F15A18F5872905B79FDAC4FD8C33EA13503DF29878C10FE6DA1D025B1128C66AB06E3EB1CEBBBFFF00CBC08
X-DTLS-CipherSuite: AES256-SHA:AES128-SHA:DES-CBC3-SHA:DES-CBC-SHA
X-DTLS-Accept-Encoding: lzs
X-CSTP-Accept-Encoding: lzs,deflate
X-CSTP-Protocol: Copyright (c) 2004 Cisco Systems, Inc.

References:
http://www.infradead.org/ocserv/
http://article.gmane.org/gmane.network.vpn.openconnect.devel/1040

Cheers,
        Thomas