how to provide tcp/ssl support on the same port

Le'ts say you open a tcp socket开发者_如何学JAVA on port 80 to handle http request, and a ssl socket on port 443 to deal with https...how can some proxy provide access to both of them on the same port??

I found only this link but it wasn't very useful. Can you provide me an erlang example or suggest me some resources from which i can learn more on the topic?

Thanks in advance

how can some proxy provide access to both of them on the same port??

By implementing the HTTP CONNECT method, the (non-transparent) proxy may switch to providing a TCP tunnel over which a browser may, for example, access an HTTPS resource.

A rather sparse specification:
https://www.rfc-editor.org/rfc/rfc2616#section-9.9

As outlined in the link you provide, you will need to write your own custom server that sniffs the request and then redirects to the correct protocol accordingly.

As http://www.faqs.org/rfcs/rfc2818.html indicates, an HTTP session will start with an Initial Request Line (e.g. GET /), whereas a TLS session will start with a ClientHello (more on the TLS session on wikipedia)

There are lots of resources online about writing servers in Erlang, e.g. How to write a simple webserver in Erlang?

Incidentally your terminology is incorrect: http, https SSL and TLS are protocols, and all operate (over the web) using TCP sockets.