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

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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

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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.