HTTP::Server errors are silently ignored

[asterite]

These lines of code:

crystal/src/http/server/request_processor.cr

Lines 50 to 53 in 9f9b0a8

	response.respond_with_status(:internal_server_error)
	error.puts "Unhandled exception on HTTP::Handler"
	ex.inspect_with_backtrace(error)
	return

are not doing what one would expect. As soon as response.respond_with_error is called, the connection is closed and the next lines are not executed (I'm not sure if another exception is raised or what). Then you never get to see the error in the output.

I also think we should probably use Log here too.

[waj]

This is probably happening when the client has closed the connection. Then the respond_with_status raise again.

I'll try to handle IO errors on HTTP::Server::Response directly so we differentiate issues when writing data to the client and just skip to close the connection.