From 3805610dff220fc0786a6f737fbe2c7aa7f26af2 Mon Sep 17 00:00:00 2001
From: zhangjianfeng_dxm <zhangjianfeng@duxiaoman.com>
Date: Thu, 9 Nov 2023 13:28:20 +0800
Subject: [PATCH] Add DisableHelloCmd options

---
 options.go |  4 ++++
 redis.go   | 28 +++++++++++++++-------------
 2 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/options.go b/options.go
index 449a9252..00e49d2a 100644
--- a/options.go
+++ b/options.go
@@ -144,6 +144,10 @@ type Options struct {
 
 	// Disable set-lib on connect. Default is false.
 	DisableIndentity bool
+
+	// Disable Hello on connect. Default is false.
+	// Hello is used to check the server version,but in Enterprise environment with twproxy,it will cause error,return EOF panic.
+	DisableHelloCmd bool
 }
 
 func (opt *Options) init() {
diff --git a/redis.go b/redis.go
index 9430eb75..1cdd2ad8 100644
--- a/redis.go
+++ b/redis.go
@@ -285,19 +285,21 @@ func (c *baseClient) initConn(ctx context.Context, cn *pool.Conn) error {
 		protocol = 3
 	}
 
-	// for redis-server versions that do not support the HELLO command,
-	// RESP2 will continue to be used.
-	if err := conn.Hello(ctx, protocol, username, password, "").Err(); err == nil {
-		auth = true
-	} else if !isRedisError(err) {
-		// When the server responds with the RESP protocol and the result is not a normal
-		// execution result of the HELLO command, we consider it to be an indication that
-		// the server does not support the HELLO command.
-		// The server may be a redis-server that does not support the HELLO command,
-		// or it could be DragonflyDB or a third-party redis-proxy. They all respond
-		// with different error string results for unsupported commands, making it
-		// difficult to rely on error strings to determine all results.
-		return err
+	if !c.opt.DisableHelloCmd {
+		// for redis-server versions that do not support the HELLO command,
+		// RESP2 will continue to be used.
+		if err := conn.Hello(ctx, protocol, username, password, "").Err(); err == nil {
+			auth = true
+		} else if !isRedisError(err) {
+			// When the server responds with the RESP protocol and the result is not a normal
+			// execution result of the HELLO command, we consider it to be an indication that
+			// the server does not support the HELLO command.
+			// The server may be a redis-server that does not support the HELLO command,
+			// or it could be DragonflyDB or a third-party redis-proxy. They all respond
+			// with different error string results for unsupported commands, making it
+			// difficult to rely on error strings to determine all results.
+			return err
+		}
 	}
 	if !c.opt.DisableIndentity {
 		libName := ""