diff --git a/src/components/Select/index.tsx b/src/components/Select/index.tsx
index 32e1ed8..f5b19d3 100644
--- a/src/components/Select/index.tsx
+++ b/src/components/Select/index.tsx
@@ -1,115 +1,86 @@
 import classnames from 'classnames'
-import { useRef, useLayoutEffect, useState, useMemo, ReactElement, Children, cloneElement } from 'react'
+import { useRef, useState, useMemo, useLayoutEffect } from 'react'
 import { createPortal } from 'react-dom'
 
 import { Icon } from '@components'
 import { noop } from '@lib/helper'
 import { BaseComponentProps } from '@models'
+
 import './style.scss'
 
-type OptionValue = string | number
+export interface SelectOptions<T extends string | number> {
+    label: string
+    value: T
+    disabled?: boolean
+    key?: React.Key
+}
 
-interface SelectProps extends BaseComponentProps {
+interface SelectProps<T extends string | number> extends BaseComponentProps {
     /**
      * selected value
      * must match one of options
      */
-    value: OptionValue
+    value: T
 
-    children?: ReactElement
+    options: Array<SelectOptions<T>>
 
-    onSelect?: (value: OptionValue, e: React.MouseEvent<HTMLLIElement>) => void
+    onSelect?: (value: T, e: React.MouseEvent<HTMLLIElement>) => void
 }
 
-export function Select (props: SelectProps) {
-    const { value, onSelect, children, className: cn, style } = props
+export function Select<T extends string | number> (props: SelectProps<T>) {
+    const { value, options, onSelect, className: cn, style } = props
 
-    const portalRef = useRef<HTMLDivElement>(document.createElement('div'))
-    const attachmentRef = useRef<HTMLDivElement>(null)
+    const portalRef = useRef(document.createElement('div'))
     const targetRef = useRef<HTMLDivElement>(null)
 
     const [showDropDownList, setShowDropDownList] = useState(false)
-    const [hasCreateDropList, setHasCreateDropList] = useState(false)
-    const dropdownListStyles = useMemo(() => {
-        if (targetRef.current != null) {
-            const targetRectInfo = targetRef.current.getBoundingClientRect()
-            return {
-                top: Math.floor(targetRectInfo.top) - 10,
-                left: Math.floor(targetRectInfo.left) - 10,
-            }
-        }
-        return {}
+    const [dropdownListStyles, setDropdownListStyles] = useState<React.CSSProperties>({})
+    useLayoutEffect(() => {
+        const targetRectInfo = targetRef.current!.getBoundingClientRect()
+        setDropdownListStyles({
+            top: Math.floor(targetRectInfo.top + targetRectInfo.height) + 6,
+            left: Math.floor(targetRectInfo.left) - 10,
+        })
     }, [])
 
-    function handleGlobalClick (e: MouseEvent) {
-        const el = attachmentRef.current
-
-        if (el?.contains(e.target as Node)) {
-            setShowDropDownList(false)
-        }
-    }
-
     useLayoutEffect(() => {
         const current = portalRef.current
         document.body.appendChild(current)
-        document.addEventListener('click', handleGlobalClick, true)
         return () => {
-            document.addEventListener('click', handleGlobalClick, true)
             document.body.removeChild(current)
         }
     }, [])
 
     function handleShowDropList () {
-        if (!hasCreateDropList) {
-            setHasCreateDropList(true)
-        }
-        setShowDropDownList(true)
+        setShowDropDownList(!showDropDownList)
     }
 
-    const matchChild = useMemo(() => {
-        let matchChild: React.ReactElement | null = null
-
-        Children.forEach(children, (child) => {
-            if (child?.props?.value === value) {
-                matchChild = child
-            }
-        })
-
-        return matchChild as React.ReactElement | null
-    }, [value, children])
-
-    const hookedChildren = useMemo(() => {
-        return Children.map(children ?? [], child => {
-            if (!child.props || !child.type) {
-                return child
-            }
-
-            // add classname for selected option
-            const className = child.props.value === value
-                ? classnames(child.props.className, 'selected')
-                : child.props.className
-
-            // hook element onclick event
-            const rawOnClickEvent = child.props.onClick
-            return cloneElement(child, Object.assign({}, child.props, {
-                onClick: (e: React.MouseEvent<HTMLLIElement>) => {
-                    onSelect?.(child.props.value, e)
-                    setShowDropDownList(false)
-                    rawOnClickEvent?.(e)
-                },
-                className,
-            }))
-        })
-    }, [children, value, onSelect])
+    const matchChild = useMemo(
+        () => options.find(o => o.value === value),
+        [value, options],
+    )
 
     const dropDownList = (
         <div
             className={classnames('select-list', { 'select-list-show': showDropDownList })}
-            ref={attachmentRef}
             style={dropdownListStyles}
         >
             <ul className="list">
-                { hookedChildren }
+                {
+                    options.map(option => (
+                        <Option
+                            className={classnames({ selected: option.value === value })}
+                            onClick={e => {
+                                onSelect?.(option.value, e)
+                                setShowDropDownList(false)
+                            }}
+                            disabled={option.disabled}
+                            key={option.key ?? option.value}
+                            value={option.value}>
+                            {option.label}
+                        </Option>
+                    ))
+                }
             </ul>
         </div>
     )
@@ -122,28 +93,25 @@ export function Select (props: SelectProps) {
                 ref={targetRef}
                 onClick={handleShowDropList}
             >
-                {matchChild?.props?.children}
+                {matchChild?.label}
                 <Icon type="triangle-down" />
             </div>
-            {
-                hasCreateDropList && createPortal(dropDownList, portalRef.current)
-            }
+            {createPortal(dropDownList, portalRef.current)}
         </>
     )
 }
 
-interface OptionProps extends BaseComponentProps {
-    key: React.Key
-    value: OptionValue
+interface OptionProps<T> extends BaseComponentProps {
+    value: T
     disabled?: boolean
     onClick?: (e: React.MouseEvent<HTMLLIElement>) => void
 }
 
-export function Option (props: OptionProps) {
-    const { className: cn, style, key, disabled = false, children, onClick = noop } = props
+function Option<T> (props: OptionProps<T>) {
+    const { className: cn, style, disabled = false, children, onClick = noop } = props
     const className = classnames('option', { disabled }, cn)
 
     return (
-        <li className={className} style={style} key={key} onClick={onClick}>{children}</li>
+        <li className={className} style={style} onClick={onClick}>{children}</li>
     )
 }
diff --git a/src/components/Select/style.scss b/src/components/Select/style.scss
index a811b2e..ba54c45 100644
--- a/src/components/Select/style.scss
+++ b/src/components/Select/style.scss
@@ -16,22 +16,16 @@
     position: absolute;
     max-width: 170px;
     border-radius: 4px;
-    overflow: hidden;
-    box-shadow: 0 2px 5px rgba($color: $color-gray-dark, $alpha: 0.5);
-    opacity: 0.8;
     pointer-events: none;
-    transform: scaleY(0);
-    transform-origin: top;
-    transition: all 200ms linear;
+    transition: all 200ms ease;
 
     .list {
+        opacity: 0;
         max-height: 300px;
         overflow: auto;
         background: $color-white;
         padding: 5px 0;
-        transform: scaleY(2);
-        transform-origin: top;
-        transition: all 200ms linear;
+        transition: all 200ms ease;
 
         > .option {
             color: $color-primary-darken;
@@ -52,11 +46,12 @@
 }
 
 .select-list-show {
-    opacity: 1;
     pointer-events: visible;
     transform: scaleY(1);
+    box-shadow: 0 2px 5px rgba($color: $color-gray-dark, $alpha: 0.5);
 
     .list {
+        opacity: 1;
         transform: scaleY(1);
     }
 }
diff --git a/src/containers/Connections/index.tsx b/src/containers/Connections/index.tsx
index 2f148ee..534f756 100644
--- a/src/containers/Connections/index.tsx
+++ b/src/containers/Connections/index.tsx
@@ -1,4 +1,4 @@
-import { useIntersectionObserver, useSyncedRef } from '@react-hookz/web/esm'
+import { useIntersectionObserver, useSyncedRef, useUnmountEffect } from '@react-hookz/web/esm'
 import { useTableInstance, createTable, getSortedRowModelSync, getColumnFilteredRowModelSync, getCoreRowModelSync } from '@tanstack/react-table'
 import classnames from 'classnames'
 import produce from 'immer'
@@ -53,6 +53,7 @@ export default function Connections () {
     const { translation, lang } = useI18n()
     const t = useMemo(() => translation('Connections').t, [translation])
     const connStreamReader = useConnectionStreamReader()
+    const readerRef = useSyncedRef(connStreamReader)
     const client = useClient()
     const cardRef = useRef<HTMLDivElement>(null)
 
@@ -156,9 +157,11 @@ export default function Connections () {
         connStreamReader?.subscribe('data', handleConnection)
         return () => {
             connStreamReader?.unsubscribe('data', handleConnection)
-            connStreamReader?.destory()
         }
     }, [connStreamReader, feed, setTraffic])
+    useUnmountEffect(() => {
+        readerRef.current?.destory()
+    })
 
     const instance = useTableInstance(table, {
         data,
diff --git a/src/containers/Logs/index.tsx b/src/containers/Logs/index.tsx
index 8fe16ff..b09f39d 100644
--- a/src/containers/Logs/index.tsx
+++ b/src/containers/Logs/index.tsx
@@ -1,17 +1,34 @@
 import dayjs from 'dayjs'
+import { camelCase } from 'lodash-es'
 import { useLayoutEffect, useEffect, useRef, useState } from 'react'
 
-import { Card, Header } from '@components'
+import { Select, Card, Header } from '@components'
 import { Log } from '@models/Log'
-import { useI18n, useLogsStreamReader } from '@stores'
+import { useConfig, useI18n, useLogsStreamReader } from '@stores'
 
 import './style.scss'
 
+const logLevelOptions = [
+    { label: 'Default', value: '' },
+    { label: 'Debug', value: 'debug' },
+    { label: 'Info', value: 'info' },
+    { label: 'Warn', value: 'warning' },
+    { label: 'Error', value: 'error' },
+    { label: 'Silent', value: 'silent' },
+]
+const logMap = new Map([
+    ['debug', 'text-teal-500'],
+    ['info', 'text-sky-500'],
+    ['warning', 'text-pink-500'],
+    ['error', 'text-rose-500'],
+])
+
 export default function Logs () {
     const listRef = useRef<HTMLUListElement>(null)
     const logsRef = useRef<Log[]>([])
     const [logs, setLogs] = useState<Log[]>([])
     const { translation } = useI18n()
+    const { data: { logLevel }, set: setConfig } = useConfig()
     const { t } = translation('Logs')
     const logsStreamReader = useLogsStreamReader()
     const scrollHeightRef = useRef(listRef.current?.scrollHeight ?? 0)
@@ -35,21 +52,29 @@ export default function Logs () {
             logsRef.current = logsStreamReader.buffer()
             setLogs(logsRef.current)
         }
-
         return () => logsStreamReader?.unsubscribe('data', handleLog)
     }, [logsStreamReader])
 
     return (
         <div className="page">
-            <Header title={ t('title') } />
+            <Header title={ t('title') } >
+                <span className="text-sm text-primary-darken mr-2">{t('levelLabel')}:</span>
+                <Select
+                    options={logLevelOptions}
+                    value={camelCase(logLevel)}
+                    onSelect={level => setConfig(c => { c.logLevel = level })}
+                />
+            </Header>
+
             <Card className="flex flex-col flex-1 mt-2.5 md:mt-4">
                 <ul className="logs-panel" ref={listRef}>
                     {
                         logs.map(
                             (log, index) => (
-                                <li className="leading-5 inline-block" key={index}>
-                                    <span className="mr-4 text-gray-400 text-opacity-90">{ dayjs(log.time).format('YYYY-MM-DD HH:mm:ss') }</span>
-                                    <span>[{ log.type }] { log.payload }</span>
+                                <li className="leading-5 inline-block text-[11px]" key={index}>
+                                    <span className="mr-2 text-orange-400">[{ dayjs(log.time).format('YYYY-MM-DD HH:mm:ss') }]</span>
+                                    <span className={logMap.get(log.type)}>[{ log.type.toUpperCase() }]</span>
+                                    <span> { log.payload }</span>
                                 </li>
                             ),
                         )
diff --git a/src/i18n/en_US.ts b/src/i18n/en_US.ts
index 559580b..f3f4864 100644
--- a/src/i18n/en_US.ts
+++ b/src/i18n/en_US.ts
@@ -41,6 +41,7 @@ const EN = {
     },
     Logs: {
         title: 'Logs',
+        levelLabel: 'Log level',
     },
     Rules: {
         title: 'Rules',
diff --git a/src/i18n/zh_CN.ts b/src/i18n/zh_CN.ts
index d443bd3..32fcb29 100644
--- a/src/i18n/zh_CN.ts
+++ b/src/i18n/zh_CN.ts
@@ -41,6 +41,7 @@ const CN = {
     },
     Logs: {
         title: '日志',
+        levelLabel: '日志等级',
     },
     Rules: {
         title: '规则',
diff --git a/src/lib/streamer.ts b/src/lib/streamer.ts
index 7336018..ae66033 100644
--- a/src/lib/streamer.ts
+++ b/src/lib/streamer.ts
@@ -1,11 +1,7 @@
 import EventEmitter from 'eventemitter3'
-import { ResultAsync } from 'neverthrow'
 import { SetRequired } from 'type-fest'
 
 export interface Config {
-    url: string
-    useWebsocket: boolean
-    token?: string
     bufferLength?: number
     retryInterval?: number
 }
@@ -17,30 +13,25 @@ export class StreamReader<T> {
 
     protected innerBuffer: T[] = []
 
-    protected isClose = false
+    protected url = ''
+
+    protected connection: WebSocket | null = null
 
     constructor (config: Config) {
         this.config = Object.assign(
             {
                 bufferLength: 0,
                 retryInterval: 5000,
-                headers: {},
             },
             config,
         )
-
-        this.config.useWebsocket
-            ? this.websocketLoop()
-            : this.loop()
     }
 
-    protected websocketLoop () {
-        const url = new URL(this.config.url)
-        url.protocol = url.protocol === 'http:' ? 'ws:' : 'wss:'
-        url.searchParams.set('token', this.config.token ?? '')
+    protected connectWebsocket () {
+        const url = new URL(this.url)
 
-        const connection = new WebSocket(url.toString())
-        connection.addEventListener('message', msg => {
+        this.connection = new WebSocket(url.toString())
+        this.connection.addEventListener('message', msg => {
             const data = JSON.parse(msg.data)
             this.EE.emit('data', [data])
             if (this.config.bufferLength > 0) {
@@ -51,59 +42,20 @@ export class StreamReader<T> {
             }
         })
 
-        connection.addEventListener('close', () => setTimeout(this.websocketLoop, this.config.retryInterval))
-        connection.addEventListener('error', err => {
+        this.connection.addEventListener('error', err => {
             this.EE.emit('error', err)
-            setTimeout(this.websocketLoop, this.config.retryInterval)
+            this.connection?.close()
+            setTimeout(this.connectWebsocket, this.config.retryInterval)
         })
     }
 
-    protected async loop () {
-        const result = await ResultAsync.fromPromise(fetch(
-            this.config.url,
-            {
-                mode: 'cors',
-                headers: this.config.token ? { Authorization: `Bearer ${this.config.token}` } : {},
-            },
-        ), e => e as Error)
-        if (result.isErr()) {
-            this.retry(result.error)
-            return
-        } else if (result.value.body == null) {
-            this.retry(new Error('fetch body error'))
+    connect (url: string) {
+        if (this.url === url && this.connection) {
             return
         }
-
-        const reader = result.value.body.getReader()
-        const decoder = new TextDecoder()
-        while (true) {
-            if (this.isClose) {
-                break
-            }
-
-            const result = await ResultAsync.fromPromise(reader?.read(), e => e as Error)
-            if (result.isErr()) {
-                this.retry(result.error)
-                break
-            }
-
-            const lines = decoder.decode(result.value.value).trim().split('\n')
-            const data = lines.map(l => JSON.parse(l))
-            this.EE.emit('data', data)
-            if (this.config.bufferLength > 0) {
-                this.innerBuffer.push(...data)
-                if (this.innerBuffer.length > this.config.bufferLength) {
-                    this.innerBuffer.splice(0, this.innerBuffer.length - this.config.bufferLength)
-                }
-            }
-        }
-    }
-
-    protected retry (err: Error) {
-        if (!this.isClose) {
-            this.EE.emit('error', err)
-            window.setTimeout(() => { this.loop() }, this.config.retryInterval)
-        }
+        this.url = url
+        this.connection?.close()
+        this.connectWebsocket()
     }
 
     subscribe (event: string, callback: (data: T[]) => void) {
@@ -120,6 +72,7 @@ export class StreamReader<T> {
 
     destory () {
         this.EE.removeAllListeners()
-        this.isClose = true
+        this.connection?.close()
+        this.connection = null
     }
 }
diff --git a/src/stores/jotai.ts b/src/stores/jotai.ts
index 4eaa32e..7d9ea39 100644
--- a/src/stores/jotai.ts
+++ b/src/stores/jotai.ts
@@ -1,11 +1,12 @@
+import { usePreviousDistinct, useSyncedRef } from '@react-hookz/web/esm'
 import { AxiosError } from 'axios'
 import produce from 'immer'
-import { atom, useAtom } from 'jotai'
+import { atom, useAtom, useAtomValue } from 'jotai'
 import { atomWithImmer } from 'jotai/immer'
 import { atomWithStorage, useUpdateAtom } from 'jotai/utils'
 import { get } from 'lodash-es'
 import { ResultAsync } from 'neverthrow'
-import { useCallback, useEffect, useMemo } from 'react'
+import { useCallback, useEffect, useMemo, useRef } from 'react'
 import useSWR from 'swr'
 import { Get } from 'type-fest'
 
@@ -86,6 +87,7 @@ export function useRuleProviders () {
 
 export const configAtom = atomWithStorage('profile', {
     breakConnections: false,
+    logLevel: '',
 })
 
 export function useConfig () {
@@ -244,49 +246,44 @@ export function useRule () {
     return { rules: data, update }
 }
 
-const logsAtom = atom({
-    key: '',
-    instance: null as StreamReader<Log> | null,
-})
+const logsAtom = atom(new StreamReader<Log>({ bufferLength: 200 }))
 
 export function useLogsStreamReader () {
     const apiInfo = useAPIInfo()
     const { general } = useGeneral()
-    const version = useVersion()
-    const [item, setItem] = useAtom(logsAtom)
+    const { data: { logLevel } } = useConfig()
+    const item = useAtomValue(logsAtom)
 
-    if (!version.version || !general.logLevel) {
-        return null
-    }
+    const level = logLevel || general.logLevel
+    const previousKey = usePreviousDistinct(
+        `${apiInfo.protocol}//${apiInfo.hostname}:${apiInfo.port}/logs?level=${level}&secret=${apiInfo.secret}`,
+    )
 
-    const useWebsocket = !!version.version || true
-    const key = `${apiInfo.protocol}//${apiInfo.hostname}:${apiInfo.port}/logs?level=${general.logLevel ?? ''}&useWebsocket=${useWebsocket}&secret=${apiInfo.secret}`
-    if (item.key === key) {
-        return item.instance!
-    }
+    const apiInfoRef = useSyncedRef(apiInfo)
 
-    const oldInstance = item.instance
+    useEffect(() => {
+        if (level) {
+            const apiInfo = apiInfoRef.current
+            const protocol = apiInfo.protocol === 'http:' ? 'ws:' : 'wss:'
+            const logUrl = `${protocol}//${apiInfo.hostname}:${apiInfo.port}/logs?level=${level}&token=${apiInfo.secret}`
+            item.connect(logUrl)
+        }
+    }, [apiInfoRef, item, level, previousKey])
 
-    const logUrl = `${apiInfo.protocol}//${apiInfo.hostname}:${apiInfo.port}/logs?level=${general.logLevel ?? ''}`
-    const instance = new StreamReader<Log>({ url: logUrl, bufferLength: 200, token: apiInfo.secret, useWebsocket })
-    setItem({ key, instance })
-
-    if (oldInstance != null) {
-        oldInstance.destory()
-    }
-
-    return instance
+    return item
 }
 
 export function useConnectionStreamReader () {
     const apiInfo = useAPIInfo()
-    const version = useVersion()
 
-    const useWebsocket = !!version.version || true
+    const connection = useRef(new StreamReader<Snapshot>({ bufferLength: 200 }))
 
-    const url = `${apiInfo.protocol}//${apiInfo.hostname}:${apiInfo.port}/connections`
-    return useMemo(
-        () => version.version ? new StreamReader<Snapshot>({ url, bufferLength: 200, token: apiInfo.secret, useWebsocket }) : null,
-        [apiInfo.secret, url, useWebsocket, version.version],
-    )
+    const protocol = apiInfo.protocol === 'http:' ? 'ws:' : 'wss:'
+    const url = `${protocol}//${apiInfo.hostname}:${apiInfo.port}/connections?token=${apiInfo.secret}`
+
+    useEffect(() => {
+        connection.current.connect(url)
+    }, [url])
+
+    return connection.current
 }
diff --git a/windi.config.ts b/windi.config.ts
index 82fe0f6..e23e2ac 100644
--- a/windi.config.ts
+++ b/windi.config.ts
@@ -11,6 +11,11 @@ export default defineConfig({
                 red: '#f56c6c',
                 green: '#67c23a',
             },
+            textColor: {
+                primary: {
+                    darken: '#54759a',
+                },
+            },
             textShadow: {
                 primary: '0 0 6px rgb(44 138 248 / 40%)',
             },