Hi @jkarneges . I wasnt paying attention to my pushpin proxy logs. I'm using zeromq and responding with tnet string. The error is 2018-01-27 18:06:22.570 zhttp/zws client req: received message with invalid format (tnetstring parse failed), skipping. This happens when the string contains special characters like the norwegian characters "øæå". I tried to utf8 encode my string. Strangely pushpin gives the same tnetstring parse error. Is there any recommended string encodings?