I saw your proxy server code.It was excellent and very professional.I'm also trying to build my own proxy server.I completed the code to handle http which works fine now.But I dont know how to handle https.I get the request as CONNECT commerce.rediff.com:443 ...(for ex)..frm the client..and i can able to seperate the host and port and send it to the server..but i'm getting a empty (or space)response from server..I just send the header i get from the client..Is there anything i need to change before sending it to the server?
Please help me..
Suresh.

The empty response you're getting from the server is normal. In HTTPS, it's customary that the client sends the first message [as specified by the SSL and TLS protocols].
The client should send an SSL hello to the proxy and the proxy should forward that to the server. From there on, the proxy should forward eevrything it gets from the client to the server and vice versa; it should not try to interpret the data.

Thanks for your great reply!

After i got the CONNECT command from the client i establish connection withe server and i send
'HTTP/1.0 200 Connection established' back to the client.I think after this the client must send SSL Hello(as you said) to the proxy server..is it correct?
But i doesnt get any command from the client after i send this response.

Anything wrong i'm doing there..

Suresh.

Yes, that is correct.

There may be two things that are going wrong:

- is your "HTTP/1.0 200 ..." string terminated by a double CRLF pair? This
is the string we use in our proxy:
"HTTP/1.0 200 Connection established\r\nProxy-Agent: Mentalis Proxy Server\r\n\r\n".

- are you sure all bytes are sent? If you send an array of bytes to a remote host, it's possible that not all bytes are sent immediately. You may need to call the Send method again, starting from the unsent bytes.

Thanks for your kind reply..

I absolutely send the response message as stated by you as(as i followed the mentalis code)

"HTTP/1.0 200 Connection established\r\nProxy-Agent: Dynu Proxy Server\r\n\r\n".

and i'm sure that all bytes has been sent as i got the sent bytes amount as 71 which is the length of the above string.still i've the same problem.I was thinking that the client will post the next commands (SSL Hello) to my proxy server thread running on 8080..is it correct?or i've to create a new thread which listens for SSL on different port?

Thanks,
Suresh.

What you're doing is correct and should work. Once you send your HTTP response message, the client should send an SSL hello message over the same socket channel.
This is how we did it in our proxy project [http://www.mentalis.org/soft/projects/proxy/] and it always worked perfectly.

Dear sir,
I'm struggling to find why the SSL hello is not coming..I'm using a MessageBox to check the incoming commands..it shows a junk value instead of SSL Hello..I'm using a Win 2003 server ..does i need to set any special options in IE sir..

Also i tried to use your proxy server in my machine..but i'm not able to get the xml file and Proxy.exe file as stated by you in the Readme.txt when i run the make.bat file.

Any help sir..
Thanks,
Suresh.

What do you mean with a "junk value instead of SSL Hello"? SSL uses a binary protocol that is not readable by humans, so maybe that 'junk' is the actual SSL hello message.

In order to use the make.bat file, make sure you run it from a console window that knows the path of the C# compiler [csc.exe].

P.S. I took the library of moving the other threads into this one. Please do not start a new thread everytime you reply to a message.

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