Issue When using UDP on OS X

[rajahaidar]

Running the client/server locally on Mac OS X

I get a JSONDecodeError Expecting value: line 1 column 1 (char 0)

this is how the result looks like, there is Increasing socket buffer size to 66531 at the beginning, so when the TestResult object gets initialized I get that error

Increasing socket buffer size to 66531
{
	"start":	{
		"connected":	[{
				"socket":	9,
				"local_host":	"127.0.0.1",
				"local_port":	5201,
				"remote_host":	"127.0.0.1",
				"remote_port":	53766