area/redishelp wanted
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Title: envoy redis_proxy can‘t support RESP3 HELLO CMD
Description:
I use a RESP3 redis client(lettuce) to connect envoy redis proxy,I found :
-
if envoy config downstream_auth_password, the use lettuce connect, envoy will return
-NOAUTH Authentication required.
-
if envoy not config downstream_auth_password,then use lettuce connect, envoy will return
-unsupported command 'HELLO'
If I use a RESP3 redis client(lettuce) to connect redis directly , there is no this problem.I think if envoy don't support HELLO，it should return -ERR unknown command 'HELLO' like redis server return , so redis client lettuce can siwtch to RESP2.
Repro steps:
- use https://github.com/lettuce-io/lettuce-core redis client (java) to connect envoy
- or use telnet like this [root@hadoop-master envoy]# telnet 127.0.0.1 63799 Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'. *5 $5 HELLO $1 3 $4 AUTH $7 default $8 foobared
Config: envoy-redis-proxy-HELLO.yml.txt