Date: Sat, 12 Jun 2004 10:34:44 +0200 From: "Robert Eckardt" <Robert.Eckardt@Robert-Eckardt.de> To: Ben Timby <asp@webexc.com> Cc: questions@freebsd.org Subject: Re: HTTPtunnel hangs with proxy Message-ID: <20040612081953.M4835@Robert-Eckardt.de> In-Reply-To: <40CA3E45.8010907@webexc.com> References: <20040607200431.M21703@Robert-Eckardt.de> <20040610081553.M38018@Robert-Eckardt.de> <40CA3E45.8010907@webexc.com>
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On Fri, 11 Jun 2004 18:20:37 -0500, Ben Timby wrote > My suggestion would be to use tcpdump to examine the data flow. > Watch what your browser sends to the http proxy, and then watch what > htc sends to it. Probably will be different. Obviously htc thinks it > is talking directly to hts, and thus is not speaking proper "http > proxy" protocol. While I know some about how this works, I don't > know alot. My guess is that httptunnel is not compatible with an > proxies, unless the manpage or other documentation says otherwise, > and provides a switch to modify the way it interacts with what it > *thinks* is the hts (but is really an http proxy). Hi Ben, thanks for your suggestions. I did analyze tcpdumps only to find out that htc/hts wait at points where a normal browser/http-server continues. The content looks the same on the first sight. It also works perfectly well with Squid in-between. It is designed to work "with proxies". In contrast to other solutions which require the CONNECT-feature activated on the proxy, httptunnel packs the packets into HTTP-GET and HTTP-POST requests which should travel along any proxy. However some proxies buffer the data or open new connections which is something httptunnel cannot cope with. > > Has someone out there successfully got such a setting (httptunnel > > via a proxy) working? Thus, I have to ask more precisely: Has someone got httptunnel work with Apache proxy? Regards, Robert
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