Bugs of HELLO command

[longfar-ncy]

Is this a regression?

Yes

Description

HELLO 命令的问题：

1. client名称不能有空格，但是hello命令没有检验名称空格问题，因此下图tcl测试失败：

2. client 的实现里，参数处理有问题：捕捉关键字 SETNAME 和其参数后，next_arg 应该 +2，而不是 +1；捕捉关键字 AUTH 后，需要提取用户和密码，然后 next_arg 应该 +3：

[marsevilspirit]

对，这是一个bug，我会尽快修复这个问题

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

---

Yes, this is a bug, I will fix this issue as soon as possible

[marsevilspirit]

参数处理其实没有什么问题， 因为for循环处那里还有一个arg++，所以setname的解析是正确的
auth是因为现在不支持acl(auth命令也是我实现的), 所以目前只支持auth password, 并不支持auth name password

接下来我会处理hello命令没有检验名称空格问题。

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

---

There is actually no problem with parameter processing, because there is an arg++ in the for loop, so the parsing of setname is correct.
auth is because it does not support acl now (the auth command is also implemented by me), so it only supports auth password, and does not support auth name password.

Next I will deal with the problem that the hello command does not check name spaces.

[marsevilspirit]

我之后会将for循环改成while循环增加代码的可读性

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

---

I will change the for loop to while loop to increase the readability of the code

[luky116]

@longfar-ncy 已经合并了一个 PR，帮忙确认下是否还有问题

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

---

@longfar-ncy has merged a PR. Please help confirm whether there are any problems.

[longfar-ncy]

https://redis.io/docs/latest/commands/hello/

中提到 hello 命令如果有 auth 不能省略 username，但不用acl时，可用 default 作为 username 的参数。
@marsevilspirit

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

---

https://redis.io/docs/latest/commands/hello/

It is mentioned that if the hello command has auth, the username cannot be omitted, but does not use acl, default can be used as the parameter of username.