How does syncmods actually work?

BlitzMax Forums/BlitzMax Programming/How does syncmods actually work?

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I wrote a simple tool which creates a tcp-server-socket and then redirects every connection to blitzbasic.com, but logges all posted data. Then I run the tool and told bmk syncmods to connect to localhost. It seems like bmk syncmods creates a http stream to the server and sends a http-get to:
/modserver122/status.php?mod=brl&cfg=win32.x86&user=Fabian&pass=<i>the_password</i>
The server simply returned:
OK: status
ModServer: BRL
ServerUrl: www.blitzbasic.com/modserver122
ServerPrivs: read
But I couldn't log what the client did next, because there were problems with the "Host:" attribute in the http-header (it was set to localhost though it had to be set to blitzbasic.com by bmk)

Doesn't BRL support a documentation about this?