请问我的代理为什么仅在特定网络环境下才正常工作？

[imotosaiko]

我按照手册指南在自己的服务器上搭建了Xray的服务端，但是当我使用流量上网时，我无论如何也无法访问如Google等网站（当然，被路由到direct的大陆网站还是没问题的），只有当我连接了学校的Wifi时，代理就能正常工作。我又尝试了将电脑连接了我的手机，手机使用流量时，代理不能正常工作，而手机连接学校的wifi时，代理正常工作。
我的服务端配置如下（删掉了服务器ip或域名等）：

{
    "log": {
	"access": "/var/log/xray/access.log",
	"error": "/var/log/xray/error.log",
	"loglevel": "warning",
	"dnsLog": false
    },
    "dns": {
	"servers": [
	    "https+local://1.1.1.1/dns-query",
	    "localhost"
	]
    },
    "routingObject": {
	"domainStrategy": "IPIfNonMatch",
	"rules": [
	    {
		"type": "field",
		"domain": ["geosite:category-ads-all", "geosite:cn"],
		"outboundTag": "block"
	    },
	    {
		"type": "field",
		"domain": ["geoip:cn", "geoip:private"],
		"outboundTag": "block"
	    }
	]
    },
    "policy": {
	"levels": {
	    "0": {
		"handshake": 3,
		"connIdle": 200
	    }
	}
    },
    "inbounds": [
	{
	    "listen": "",
	    "port": 443,
	    "protocol": "vless",
	    "settings": {
		"clients": [
		    {
			"id": "",
			"flow": "xtls-rprx-vision"
		    }
		],
		"decryption": "none",
		"fallbacks": [
		    {
			"dest": 10080,
			"xver": 1
		    }
		]
	    },
	    "streamSettings": {
		"network": "tcp",
		"security": "tls",
		"tlsSettings": {
		    "serverName": "",
		    "minVersion": "1.2",
		    "certificates": [
			{
			    "certificateFile": "",
			    "keyFile": ""
			}
		    ]
		}
	    },
	    "sniffing": {
		"enabled": true,
		"destOverride": [
		    "http",
		    "tls"
		]
	    }
	}
    ],
    "outbounds": [
	{
	    "protocol": "freedom",
	    "tag": "direct"
	},
	{
	    "protocol": "blackhole",
	    "tag": "block"
	}
    ]
}

客户端配置如下：

{
  "log": {
    "access": "",
    "error": "",
    "loglevel": "error",
    "dnsLog": false
  },
  "dns": {
	"servers": [
	  {
		"address": "1.1.1.1",
		"domains": ["geosite:geolocation-!cn"]
	  },
	  {
		"address": "233.5.5.5",
		"domains": ["geosite:cn"],
		"expectIPs": ["geoip:cn"]
	  },
	  {
		"address": "114.114.114.114",
		"domains": ["geosite:cn"]
	  },
	  "localhost"
	]
  },
  "routing": {
	"domainStrategy": "IPIfNonMatch",
	"rules": [
	  {
		"type": "field",
		"domain": [
		  "geosite:cn"
		],
		"outboundTag": "direct"
	  },
	  {
		"type": "field",
		"domain": [
		  "geosite:category-ads-all"
		],
		"outboundTag": "block"
	  },
	  {
		"type": "field",
		"ip": [
		  "geoip:private",
		  "geoip:cn"
		],
		"outboundTag": "direct"
	  },
	  {
		"type": "field",
		"ip": [
		  "233.5.5.5"
		],
		"outboundTag": "direct"
	  }
	]
  },
  "inbounds": [
	{
	  "listen": "127.0.0.1",
	  "port": 10080,
	  "protocol": "http",
	  "sniffing": {
		"enabled": true,
		"destOverride": [
		  "http",
		  "tls"
		]
	  }
	},
	{
	  "listen": "127.0.0.1",
	  "port": 10081,
	  "protocol": "socks",
	  "settings": {
		"udp": true
	  },
	  "sniffing": {
		"enabled": true,
		"destOverride": [
		  "http",
		  "tls"
		]
	  }
	}
  ],
  "outbounds": [
	{
	  "protocol": "vless",
	  "settings": {
		"vnext": [
		  {
			"address": "",
			"port": 443,
			"users": [
			  {
				"id": "",
				"encryption": "none",
				"flow": "xtls-rprx-vision"
			  }
			]
		  }
		]
	  },
	  "streamSettings": {
		"network": "tcp",
		"security": "tls",
		"tlsSettings": {
		  "serverName": "",
		  "fingerprint": "chrome"
		}
	  },
	  "tag": "proxy"
	},
	{
	  "protocol": "freedom",
	  "tag": "direct"
	},
	{
	  "protocol": "blackhole",
	  "tag": "block"
	}
  ]
}

当在流量环境下访问Google的时候，Xray客户端的日志如下（日志等级为warnning）：

2023/07/08 18:17:03 127.0.0.1:34220 accepted //google.com:443 [proxy]

此时Firefox的报错页面是下面这样的：

在wifi环境下，访问Google的Xray客户端日志为：

2023/07/08 18:16:48 DNS accepted udp:1.1.1.1:53 [xray.system.c2cadef2-6643-4e84-912a-9b77ed06d6c6 >> proxy]
2023/07/08 18:16:48 127.0.0.1:60994 accepted //google.com:443 [proxy]
2023/07/08 18:16:49 127.0.0.1:32776 accepted //www.google.com:443 [proxy]

我大概理解VLESS是用正常网站的来给代理打掩护的原理，我尝试了一下，两种网络环境下，我都能正常访问我的服务器上的网站。
这是最近出现的情况（大概近一个月前它还正常工作，这期间我没有对服务器软件进行升级或修改配置文件）。如果有高手知晓问题的原因希望不吝赐教，多谢啦！

[chika0801]

我看了你两端配置，没有发现配置方面的问题。

看了你问题的描述，你手机使用手机流量，客户端表现就是不通。有不有可能是你VPS到你手机运营商，线路质量不行。

此时建议你用排除法，再买些VPS商家的VPS测试一下。

因为你的问题很玄学，目前只能这样建议。