proxywatchd: add 0.3s delay before SSL fallback to HTTP

proxywatchd.py

@@ -1519,10 +1519,13 @@ class TargetTestJob():
                         sock.disconnect()
                     except Exception:
                         pass
+                    # Delay before secondary check (allows different Tor circuit)
+                    time.sleep(0.3)
                     if config.watchd.debug:
                         _log('SSL failed, fallback to HTTP: %s://%s:%d' % (proto, ps.ip, ps.port), 'debug')
                     try:
                         http_port = 80
+                        # New Tor credentials = new circuit
                         http_proxies = [
                             rocksock.RocksockProxyFromURL(tor_proxy_url(torhost)),
                             rocksock.RocksockProxyFromURL('%s://%s:%s' % (proto, ps.ip, ps.port)),