[1] Netstrings (1997-04-14 10:44:10 +09:00) http://cr.yp.to/proto/netstrings.txt

[2] simple is better - JSON-RPC 2.0 Transport: Sockets ( (Roland Koebler著, 2016-06-07 16:23:31 +09:00)) https://www.simple-is-better.org/json-rpc/transport_sockets.html#netstrings