fix: increase TCP dial timeout default value to improve connection reliability

Author: yosebyte

internal/common.go

@@ -64,7 +64,7 @@ var (
 	semaphoreLimit   = getEnvAsInt("NP_SEMAPHORE_LIMIT", 1024)                        // 信号量限制
 	udpDataBufSize   = getEnvAsInt("NP_UDP_DATA_BUF_SIZE", 8192)                      // UDP缓冲区大小
 	handshakeTimeout = getEnvAsDuration("NP_HANDSHAKE_TIMEOUT", 10*time.Second)       // 握手超时
-	tcpDialTimeout   = getEnvAsDuration("NP_TCP_DIAL_TIMEOUT", 10*time.Second)        // TCP拨号超时
+	tcpDialTimeout   = getEnvAsDuration("NP_TCP_DIAL_TIMEOUT", 30*time.Second)        // TCP拨号超时
 	udpDialTimeout   = getEnvAsDuration("NP_UDP_DIAL_TIMEOUT", 10*time.Second)        // UDP拨号超时
 	poolGetTimeout   = getEnvAsDuration("NP_POOL_GET_TIMEOUT", 30*time.Second)        // 池连接获取超时
 	minPoolInterval  = getEnvAsDuration("NP_MIN_POOL_INTERVAL", 100*time.Millisecond) // 最小池间隔