Proxy/gateway for HTTP binding - http

Question

I have following infrastructure and want to provide an online web chat (on server 1) using our internal xmpp server (server 2), which is running an Openfire server.
wan <----> server 1 <----> server 2
Server 1 can only reach server 2 over a HTTP proxy. So I need a possibility to get a HTTP binding or something else on server 1, which provides the bindings for a web chat like JWChat or Co.
I think a simple redirect to the HTTP binding on server 2 would be good, but I don't know how.
Perhaps there is another possibility, thanks for any advices.
EDIT:
The nginx configuration is now like the following:
server {
listen 8000;
server_name server1 localhost;
location ~ ^/http-bind {
proxy_pass http://server2:8085;
}
location / {
proxy_pass http://proxy:3128;
}
}
But the following commands doesn't work correctly:
-bash-4.1# wget http://localhost:8000
--2012-02-06 10:57:14-- http://localhost:8000/
Resolving localhost... 127.0.0.1
Connecting to localhost|127.0.0.1|:8000... connected.
HTTP request sent, awaiting response... 400 Bad Request
2012-02-06 10:57:14 ERROR 400: Bad Request.
-bash-4.1# wget http://localhost:8000/http-bind
--2012-02-06 10:57:21-- http://localhost:8000/http-bind
Resolving localhost... 127.0.0.1
Connecting to localhost|127.0.0.1|:8000... connected.
HTTP request sent, awaiting response... 502 Bad Gateway
2012-02-06 10:57:21 ERROR 502: Bad Gateway.
What is wrong?

Answer 1

Typically server 1 will be running:
A proxy
A webserver running your chat app.
Let's assume nginx as a proxy running on port 80, and your choice of a webserver running on port 8080. Also assume that your web client will bind to /http-bind. Your nginx config will then contain:
server {
listen 80;
server_name server1;
location ~ ^/http-bind {
proxy_pass http://server2:5280;
}
location / {
proxy_pass http://localhost:8080/;
}
}
Adapt accordingly for some other proxy.