Adding on as there was a new error code that happened that may be related, may not be. After I start discovery, I get the error noted above by James. However, if I let it sit for a long time, I ultimately get this error.
2018-07-11 01:24:54.337 [WARN ] [org.eclipse.jetty.http.HttpParser ] - Illegal character 0x3 in state=START for buffer HeapByteBuffer@27ac985a[p=1,l=43,c=8192,r=42]={\x03<<<\x00\x00+&\xE0\x00\x00\x00\x00\x00Cookie:...hello\r\n\x01\x00\x08\x00\x03\x00\x00\x00>>>json\r\nContent-Len...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}
2018-07-11 01:24:54.345 [WARN ] [org.eclipse.jetty.http.HttpParser ] - bad HTTP parsed: 400 Illegal character 0x3 for HttpChannelOverHttp@296b62df{r=0,c=false,a=IDLE,uri=null}