diff --git a/Basis/Methods.py b/Basis/Methods.py
index 456eaaf..3b8a0b4 100644
--- a/Basis/Methods.py
+++ b/Basis/Methods.py
@@ -117,6 +117,10 @@ ssrObfuscations = [ # obfuscations of ShadowsocksR (obfs)
 # VMess Info
 vmessMethods = ['aes-128-gcm', 'chacha20-poly1305', 'auto', 'none', 'zero']
 
+# XTLS Info
+xtlsFlows = ['xtls-origin', 'xtls-direct', 'xtls-splice']
+xtlsFlows = {x: x.replace('-', '-rprx-') for x in xtlsFlows}
+
 # v2ray / Xray Info
 quicMethods = ['none', 'aes-128-gcm', 'chacha20-poly1305']
 udpObfuscations = ['none', 'srtp', 'utp', 'wechat-video', 'dtls', 'wireguard']
diff --git a/Builder/Xray.py b/Builder/Xray.py
index 49321c1..371c4c9 100644
--- a/Builder/Xray.py
+++ b/Builder/Xray.py
@@ -2,8 +2,9 @@
 # -*- coding: utf-8 -*-
 
 from Builder import V2ray
+from Basis.Methods import xtlsFlows
 
-loadConfig = V2ray.loadConfig  # same basic config format
+loadConfig = V2ray.loadConfig
 
 
 def loadSecure(secureInfo: dict or None) -> dict:  # TLS / XTLS encrypt config
@@ -65,11 +66,6 @@ def xtlsFlow(streamInfo: dict or None) -> dict:
         return {}
     if streamInfo['secure']['type'] != 'xtls':  # not XTLS secure type
         return {}
-    xtlsFlows = {
-        'xtls-origin': 'xtls-rprx-origin',
-        'xtls-direct': 'xtls-rprx-direct',
-        'xtls-splice': 'xtls-rprx-splice',
-    }
     if streamInfo['secure']['flow'] not in xtlsFlows:
         raise RuntimeError('Unknown xtls flow')
     return {
diff --git a/Tester/VLESS.py b/Tester/VLESS.py
new file mode 100644
index 0000000..1972c4a
--- /dev/null
+++ b/Tester/VLESS.py
@@ -0,0 +1,89 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import os
+import json
+from Tester import Xray
+from Builder import VLESS
+from Basis.Logger import logging
+from Basis.Process import Process
+from Basis.Functions import md5Sum
+from Basis.Functions import genUUID
+from Basis.Methods import xtlsFlows
+from Basis.Functions import getAvailablePort
+
+settings = {
+    'serverBind': '127.0.0.1',
+    'clientBind': '127.0.0.1',
+    # 'serverBind': '::1',
+    # 'clientBind': '::1',
+    'workDir': '/tmp/ProxyC',
+}
+
+
+def loadServer(configFile: str, proxyInfo: dict, streamConfig: dict, xtlsFlow: str or None) -> Process:
+    vlessConfig = Xray.loadConfig({
+        'protocol': 'vless',
+        'listen': proxyInfo['server'],
+        'port': proxyInfo['port'],
+        'settings': {
+            'clients': [{**{
+                'id': proxyInfo['id'],
+            }, **({} if xtlsFlow is None else {
+                'flow': xtlsFlow
+            })}],
+            'decryption': 'none'
+        },
+        'streamSettings': streamConfig
+    })
+    serverFile = os.path.join(settings['workDir'], configFile)
+    return Process(settings['workDir'], cmd = ['xray', '-c', serverFile], file = {
+        'path': serverFile,
+        'content': json.dumps(vlessConfig)
+    }, isStart = False)
+
+
+def loadClient(configFile: str, proxyInfo: dict, socksInfo: dict) -> Process:  # load client process
+    clientFile = os.path.join(settings['workDir'], configFile)
+    vlessCommand, vlessConfig, _ = VLESS.load(proxyInfo, socksInfo, clientFile)
+    return Process(settings['workDir'], cmd = vlessCommand, file = {
+        'path': clientFile,
+        'content': vlessConfig
+    }, isStart = False)
+
+
+def loadTest(stream: dict) -> dict:
+    proxyInfo = {  # connection info
+        'server': settings['serverBind'],
+        'port': getAvailablePort(),
+        'method': 'none',
+        'id': genUUID(),  # random uuid v5
+        'stream': stream['info']
+    }
+    socksInfo = {  # socks5 interface for test
+        'addr': settings['clientBind'],
+        'port': getAvailablePort()
+    }
+    xtlsFlow = None
+    if stream['info']['secure'] is not None and stream['info']['secure']['type'] == 'xtls':  # with XTLS secure
+        xtlsFlow = xtlsFlows[stream['info']['secure']['flow']]
+        xtlsFlow = xtlsFlow.replace('splice', 'direct')  # XTLS on server should use xtls-rprx-direct flow
+    configName = 'vless_%s' % (md5Sum(stream['caption'])[:8])
+    testInfo = {  # release test info
+        'title': 'VLESS test: %s' % stream['caption'],
+        'client': loadClient(configName + '_client.json', proxyInfo, socksInfo),
+        'server': loadServer(configName + '_server.json', proxyInfo, stream['server'], xtlsFlow),
+        'socks': socksInfo,  # exposed socks5 address
+        'interface': {
+            'addr': proxyInfo['server'],
+            'port': proxyInfo['port'],
+        }
+    }
+    logging.debug('New vless test -> %s' % testInfo)
+    return testInfo
+
+
+def load():
+    streams = Xray.loadStream()  # load xray-core stream list
+    for stream in streams:  # test all stream cases
+        yield loadTest(stream)
diff --git a/Tester/VMess.py b/Tester/VMess.py
index 67cbcdc..261b764 100644
--- a/Tester/VMess.py
+++ b/Tester/VMess.py
@@ -60,7 +60,7 @@ def loadTest(method: str, aid: int, stream: dict) -> dict:
     proxyInfo = {  # connection info
         'server': settings['serverBind'],
         'port': getAvailablePort(),
-        'method': 'auto',
+        'method': method,
         'id': genUUID(),  # random uuid v5
         'aid': aid,
         'stream': stream['info']
diff --git a/Tester/Xray.py b/Tester/Xray.py
new file mode 100644
index 0000000..ef5b6b9
--- /dev/null
+++ b/Tester/Xray.py
@@ -0,0 +1,98 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import copy
+import itertools
+
+from Tester import V2ray
+from Basis.Methods import xtlsFlows
+from Basis.Functions import genFlag
+from Basis.Methods import quicMethods
+from Basis.Methods import udpObfuscations
+
+loadConfig = V2ray.loadConfig
+tcpStream = V2ray.tcpStream
+kcpStream = V2ray.kcpStream
+h2Stream = V2ray.h2Stream
+quicStream = V2ray.quicStream
+grpcStream = V2ray.grpcStream
+
+settings = {
+    'site': 'www.bing.com',
+    'host': '343.re',
+    'cert': '/etc/ssl/certs/343.re/fullchain.pem',
+    'key': '/etc/ssl/certs/343.re/privkey.pem',
+}
+
+
+def addSecure(streamConfig: dict, xtlsFlow: str or None = None, isUdp443: bool = False) -> dict:  # add TLS or XTLS
+    streamConfig['caption'] += ' (with %s)' % (
+        'tls' if xtlsFlow is None else (xtlsFlow + ('-udp443' if isUdp443 else ''))
+    )
+    streamConfig['info']['secure'] = {**{  # secure options for client
+        'type': 'tls' if xtlsFlow is None else 'xtls',
+        'sni': settings['host'],
+        'alpn': None,
+        'verify': True,
+    }, **({} if xtlsFlow is None else {
+        'flow': xtlsFlow,
+        'udp443': isUdp443,
+    })}
+    streamConfig['server']['security'] = 'tls' if xtlsFlow is None else 'xtls'
+    streamConfig['server']['%sSettings' % streamConfig['server']['security']] = {  # cert and key for server
+        'alpn': ['h2', 'http/1.1'],
+        'certificates': [{
+            'certificateFile': settings['cert'],
+            'keyFile': settings['key'],
+        }]
+    }
+    return streamConfig
+
+
+def wsStream(isEd: bool) -> dict:
+    path = '/' + genFlag(length = 6)  # random websocket path
+    return {
+        'caption': 'WebSocket stream' + (' (Max-Early-Data 2048)' if isEd else ''),
+        'info': {
+            'type': 'ws',
+            'host': settings['host'],
+            'path': path,
+            'ed': 2048 if isEd else None,
+            'secure': None,
+        },
+        'server': {
+            'network': 'ws',
+            'wsSettings': {
+                'path': path + ('?ed=2048' if isEd else ''),
+                'headers': {
+                    'Host': settings['host']
+                }
+            }
+        }
+    }
+
+
+def loadStream() -> list:
+    streams = []
+    addStream = lambda x: streams.append(copy.deepcopy(x))
+    for isObfs in [False, True]:
+        addStream(tcpStream(isObfs))  # TCP stream
+        addStream(addSecure(tcpStream(isObfs)))  # TCP stream with TLS
+        if isObfs: continue  # can't use XTLS when enable obfs
+        for xtlsFlow, udp443 in itertools.product(xtlsFlows, [False, True]):
+            addStream(addSecure(tcpStream(isObfs = False), xtlsFlow, udp443))  # TCP stream with XTLS
+    for udpObfs in udpObfuscations:
+        addStream(kcpStream(udpObfs))  # mKCP stream
+        addStream(addSecure(kcpStream(udpObfs)))  # mKCP stream with TLS
+        for xtlsFlow, udp443 in itertools.product(xtlsFlows, [False, True]):
+            addStream(addSecure(kcpStream(udpObfs), xtlsFlow, udp443))  # mKCP stream with XTLS
+    for isEd in [False, True]:
+        addStream(wsStream(isEd))  # WebSocket stream
+        addStream(addSecure(wsStream(isEd)))  # WebSocket stream with TLS
+    addStream(addSecure(h2Stream()))  # HTTP/2 stream with TLS
+    for quicMethod, quicObfs in itertools.product(quicMethods, udpObfuscations):
+        addStream(addSecure(quicStream(quicMethod, quicObfs)))  # QUIC stream with TLS
+    for isMulti in [False, True]:
+        addStream(grpcStream(isMulti))  # gRPC stream
+        addStream(addSecure(grpcStream(isMulti)))  # gRPC stream with TLS
+    return streams
diff --git a/test.py b/test.py
index b46d6cd..7c76673 100755
--- a/test.py
+++ b/test.py
@@ -6,6 +6,7 @@ import requests
 from threading import Thread
 
 from Tester import VMess
+from Tester import VLESS
 from Tester import Shadowsocks
 from Tester import ShadowsocksR
 
@@ -95,9 +96,11 @@ ss = Shadowsocks.load(isExtra = True)
 # ss = Shadowsocks.load(isExtra = False)
 ssr = ShadowsocksR.load()
 vmess = VMess.load()
+vless = VLESS.load()
 
 logging.critical('test start')
 # runTest(ss, 64)
 # runTest(ssr, 64)
-runTest(vmess, 64)
+# runTest(vmess, 64)
+runTest(vless, 64)
 logging.critical('test complete')